JP6955249B2 - Buffing method, buffing composition and water-based emulsified buffing composition for repairing painted surfaces of automobiles - Google Patents

Description

The present invention relates to a buffing method, a buffing composition, and an aqueous emulsified buffing composition for repairing an automobile painted surface. More specifically, during the buff polishing operation, after rough polishing using a polishing buff and an aqueous emulsified buff polishing composition, finish polishing is performed using the finishing buff and the same aqueous emulsified buff polishing composition used for the polishing. In order to repair the coated surface and the removal marks of dust and lumps on the painted surface after the top coat coating in the buff polishing method characterized by the polishing, the water-based emulsified buff polishing composition used for the buff polishing method, and the sheet metal repair painting work of automobiles and the like. With respect to the aqueous emulsified buff polishing composition used.

In sheet metal repair painting work for automobiles and the like, paper water polishing and buffing are performed after topcoating to smooth the coating film to the same extent as the coated surface of new cars. In particular, in the buffing step, it is required to perform high-level finish polishing to the extent that the polished portion cannot be visually identified in the end.
In the conventional buffing process, the traces of dust and dirt removed by paper (paper grain) are polished and repaired in the rough polishing process, and at the same time, the surrounding coating surface is polished and trimmed, and then the rough polishing process is polished in the finish polishing process. The marks (buffs) have been repaired and highly finished to a level that is not visible to the naked eye.
In the polishing composition used in the rough polishing process, polishing particles having a large particle size and strong polishing power are generally used, so that large and deep line scratches (buffs) remain in the polishing marks. It took more time than necessary to repair the buffs in the rough polishing process in the finishing process, and especially when deep line scratches remained, it was necessary to add a medium sharpening process.
In addition, since the amount of abrasive particles contained is large, a large amount of dust is generated, and it is necessary to take measures against dust.
As a measure against buffing, a method of blending polyethylene wax or the like in the polishing composition to make the buffing inconspicuous has been devised (see Patent Document 1), but the wax is embedded in the polishing scratches to temporarily smooth the buffing. There was a problem that the wax fell off over time and the polishing marks became conspicuous again. The present inventors have devised a composition that reduces the occurrence of buffing eyes and finishes with a high gloss by limiting the types of emulsifiers (see Patent Documents 2 and 3), but these compositions also buff. It was difficult to completely suppress the development of eyes.
Furthermore, the present inventors have devised a buffing method and a composition capable of maintaining a wet state in a combination of a specific polishing particle and a specific type and blending amount of a specific lubricating oil as a polishing method for suppressing the occurrence of buffing. , It was possible to finish with a good gloss by minimizing the buffing, but even with this composition, it is necessary to use abrasive particles with a large particle size in order to increase the polishing power in the polishing process, and the buffing is reduced. There was a limit to what I could do. (See Patent Document 4)

Patent No. 2848657 Japanese Patent No. 4113380 Patent No. 4215246 Japanese Patent No. 5911674

As described above, in the buffing composition and its polishing method used for the conventional repair painting work of automobiles and the like, the buffing grain generated in the rough polishing step is too large, so that the buffing grain is removed in the finish polishing step. It took time and effort to do so.
The present invention has been made in view of such circumstances, and although it has the same polishability and workability as the conventional polishing method, an excellent glossy surface with extremely few buffing is obtained, and polishing is performed. A buffing method that can provide a comfortable working environment with less dust scattering, that is, during buffing work, after rough polishing with a polishing buff and the aqueous emulsified buff polishing composition of the present invention, a finishing buff Provided are a buff polishing method, a buff polishing composition, and an aqueous emulsifying buff polishing composition for repairing an automobile painted surface, which are characterized by finish polishing using the same aqueous emulsified buff polishing composition used for the polishing. With the goal.
As a result, the finished state (generation of buffing) of the conventional buffing process is remarkably improved, and there is a possibility that the finishing process conventionally required can be shortened.

As a result of diligent research, the present inventors have obtained an excellent glossy surface with extremely few buffing even though the polishing property and workability are equivalent to those of the conventional polishing method. We have found a buffing method, a buffing composition, and an aqueous emulsified buffing composition for repairing a painted surface of an automobile, which can provide a comfortable working environment with less scattering.
That is, the present invention does not contain a surfactant selected from a cationic surfactant, an anionic surfactant, and a nonionic surfactant, and the abrasive particles are metal oxides having a true density of 7 or more, and the abrasive particles are abrasive particles. The volume average of 50% of the particles is 1 to 5 μm, and (a) 2 to 20% by mass of abrasive particles, (b) 1 to 9% by mass of lubricating oil, (c) kerosene and / or light oil and / or octamethylcyclo. 2 to 20% (d) thickening stabilizer 0.1 to 2.0% by volume and 49.0 to 94.9% by volume of one or more selected from tetrasiloxane and / or decamethylcyclopentasiloxane. A water-based emulsified composition for buffing and buffing, which can be used in both a buffing step and a buffing finishing step containing%.
Further, the aqueous emulsification composition for buffing and buffing of the present invention uses (a) one or two selected from stannic oxide and / or cerium oxide as polishing particles, and (b) a molecule as a lubricating oil. One or more of the fatty oils having 18 carbon atoms of the higher unsaturated fatty acid, and liquid paraffin and glycerin are used, and (c) light oil and / or kerosene and / or octamethylcyclotetrasiloxane and / or as a diluting solvent. It is characterized in that one or more selected from decamethylcyclopentasiloxane is used, and (d) an associated alkali-soluble acrylic polymer is used as a thickening stabilizer.
Further, the aqueous emulsifying composition for buffing and buffing of the present invention uses (a) one or two selected from linolenic oxide and / or cerium oxide as polishing particles, and (b) as a lubricating oil. Fat oil containing any one of oleic acid triglyceride, linoleic acid triglyceride, linolenic acid triglyceride, and linolenic acid triglyceride, and liquid paraffin and glycerin are used, and (c) kerosene and / or light oil and / or octamethylcyclo as a diluting solvent. One or more selected from tetrasiloxane and / or decamethylcyclopentasiloxane can be used, and (d) an associated alkali-soluble acrylic polymer can be used as the thickening stabilizer.
Furthermore, the aqueous emulsifying composition for buffing and buffing of the present invention is a fat containing any one of oleic acid triglyceride, ricinolic acid triglyceride, linoleic acid triglyceride, and linolenic acid triglyceride as (b) lubricating oil. Contains oil, liquid paraffin and glycerin, liquid paraffin: glyceride = 7: 3 to 9: 1 (mass ratio), and any one of oleic acid triglyceride, ricinolic acid triglyceride, linoleic acid triglyceride, and linolenic acid triglyceride. Fat oil containing: (liquid paraffin and glycerin) = 30: 70 to 5:95 (mass ratio).
Further, in the present invention, the aqueous emulsifying composition for buffing and buffing of the present invention is applied to a polishing buff (wool buff), buffing is performed, and then the aqueous emulsifying composition for buffing and buffing is performed. Is a buffing and buffing method that can be applied to a finishing buff (sponge buff) to perform buffing work.
Further, in the buffing and buffing method of the present invention, the buffing and buffing aqueous emulsifying composition used in the buffing step and the buffing and buffing aqueous emulsifying composition used in the finishing step are the same. It can be a composition.

As is clear from the results in Table 1, the buffing method using the aqueous emulsifying buffing and buffing composition of the present invention and the aqueous emulsifying buffing and buffing composition uses abrasive particles having a small particle size. Despite being used, it has excellent polishing power and polishing speed, buffing is not noticeable, and the finish after polishing is remarkably good. Usually, when the aqueous emulsified buff polishing composition of the present invention is combined with a wool buff for polishing, good polishing power can be obtained, but it has been found that the polishing power is further increased by increasing the rotation speed of the polisher. In addition, it is compatible with the sponge buff for buffing, and the buffing can be removed smoothly.
Moreover, even if the number of rotations of the polisher is increased, there is little adhesion or scattering of polishing debris to the coating film during the polishing work, and a buffing method that enables extremely comfortable work, and a composition for water-based emulsification polishing and buffing finish are provided. I was able to. (In the conventional buffing composition, when the number of rotations of the polisher is increased, heat is generated on the surface of the coating film, causing problems such as polishing debris sticking to the coating film.)

The aqueous emulsified buff polishing composition of the present invention is an O / W type aqueous emulsified composition in which the dispersion medium (water): dispersoid (oil agent and polishing particles) is 50 to 95: 5 to 50, and is dispersed. The quality is basically composed of abrasive particles, lubricating oil, diluting solvent and thickening stabilizer.
(A) The abrasive particles used in the present invention are metal oxides having a true density of 7 or more, and are not particularly limited, but stannic oxide and cerium oxide are preferable, and stannic oxide is more preferable. .. Ditin oxide is obtained by firing metatinic acid, has a large specific density, and has good polishing power.
The particle size of the abrasive particles is preferably 1 to 5 μm in volume average 50% particle size and 10 μm or less in 90% particle size. The particle size is expressed by the particle size, and the particle size means the integrated% particle size based on the volume.
Generally, the particle size of the polishing particles is large for polishing applications and small for finishing applications. However, in the aqueous emulsified buff polishing composition of the present invention, the particle size used for finishing applications is preferable, and even if the particle size is small, it is used for polishing applications. It has sufficient polishing power to be able to do so, and has sufficient finishability.
If the volume average 50% average particle size is smaller than 1 μm, the polishing power is not sufficient, and if it exceeds 5 μm, polishing marks become conspicuous. When the volume average 90% particle size exceeds 10 μm, the buffs become more noticeable.
The content of the polishing particles in the entire polishing composition is preferably 2 to 20% by mass with respect to the entire polishing composition. More preferably, it is 5 to 15% by mass. If the content of the polishing particles is less than 2% by mass with respect to the entire polishing composition, the polishing power is lowered, and if it is more than 20% by mass, the workability is lowered.

In the present invention, as the (b) lubricating oil, a fatty oil containing a triglyceride having 18 carbon atoms in the higher unsaturated fatty acid in the molecule, liquid paraffin and glycerin are required.
The liquid paraffin used in the present invention is selected from normal paraffin, isoparaffin, and cycloparaffin having a kinematic viscosity at 40 ° C. of 5 to 80 cSt, and usually a combination of a plurality of viscosities is used.
Liquid paraffin: Fat oil containing triglyceride having glycerin = 7: 3 to 9: 1 and higher unsaturated fatty acid in the molecule having 18 carbon atoms: (liquid paraffin and glycerin) = 30: 70 to 5:95 Is preferable.
If the amount of liquid paraffin is too much for glycerin, the gloss will be impaired and the finish will not be clean. If the amount of liquid paraffin is too small with respect to glycerin, the lubricity is lowered and the polishing power is lowered.
On the other hand, if the amount of fat oil containing triglyceride having 18 carbon atoms in the higher unsaturated fatty acid in the molecule is too large with respect to liquid paraffin and glycerin, the gloss is impaired, the finish is not refreshed, and the wiping property is also deteriorated. If the amount of fat oil containing triglyceride having 18 carbon atoms in the higher unsaturated fatty acid in the molecule is too small with respect to liquid paraffin and glycerin, the polishing power and gloss will be deteriorated.
In addition, fat oil containing triglyceride having 18 carbon atoms of higher unsaturated fatty acid in the molecule is generally contained in a large amount in natural vegetable fats and oils, and the higher unsaturated fatty acid is oleic acid (intramolecular unsaturated fatty acid). Saturated double bond number 1), ricinolic acid (intramolecular unsaturated double bond number 1 and number of hydroxyl groups 1), linoleic acid (intramolecular unsaturated double bond number 2), linolenic acid (molecule The number of unsaturated double bonds in the above is any of 3), and they are present as oleic acid triglyceride, ricinolic acid triglyceride, linoleic acid triglyceride, and linolenic acid triglyceride, respectively.
Oleic acid triglyceride is usually olive oil (70-80% content), rapeseed oil (Lower chic / 60-70% content), saflower oil (high oleic / 70-80% content), sunflower oil (high oleic / 80-90% content). , Tea seed oil (80-90% content), almond oil (60-70% content), avocado oil (60-70% content), peanut oil (50-60% content), pigeon wheat oil (50-60% content) It is also contained in palm oil, rice oil, sesame oil, corn oil, cottonseed oil, borage seed oil, soybean oil, linseed oil, grape oil, etc. , Himashi oil, tung oil, etc. Ricinoleic acid triglyceride is abundant in castor oil (80-90% content). Linol acid triglycerides are usually safflower oil (hylinol / 70-80% content), grape oil (70-80% content), evening primrose oil (70-80% content), walnut oil (60-70% content), sunflower For oil (50-60% content), soybean oil (50-60% content), cotton seed oil (50-60% content), corn oil (50-60% content), wheat germ oil (50-60% content), etc. It is also contained in a large amount, rose hip oil, borage seed oil, rice oil, sesame oil, peanut oil, pigeon wheat oil, rapeseed oil, linseed oil, palm oil, etc. It is also contained in oil and palm oil. Linolenic acid triglyceride is usually abundant in tung oil (80-90% content), sesame oil (50-60% content), sesame oil (55-65% content), and soybean oil (60-70% content). In addition, it is also contained in rose hip oil, borage seed oil, walnut oil, etc., and in a small amount, it is also contained in rapeseed oil, evening primrose oil, soybean oil, rice bran oil, corn oil, sesame oil, etc.
The content of the triglyceride-containing fatty oil, liquid paraffin and glycerin having 18 carbon atoms in the higher unsaturated fatty acid in the molecule is preferably 1 to 9% by mass based on the total amount of the polishing composition. If the amount of the triglyceride-containing fatty oil, liquid paraffin, and glycerin having 18 carbon atoms in the higher unsaturated fatty acid in the molecule is less than 1% by mass of the entire polishing composition, the polishing power and glossiness are lowered, and polishing is performed. The dust tends to dry out, and if it is more than 9% by mass, the visibility and wiping property during work are lowered.

The kerosene (c) used in the present invention is a petroleum fraction defined by JIS K 2203 and is mainly used as a fuel oil for a stove. Diesel oil is a petroleum distillate specified in JIS K 2204 and is mainly used as fuel oil for diesel engines. Both are mixtures of hydrocarbons, and light oil contains more components with a higher boiling point than kerosene. Kerosene and / or light oil are diluting solvents for lubricating oil, and have a role of appropriately delaying the drying property of the aqueous emulsified buff polishing composition of the present invention and preventing polishing debris from drying out, thereby providing stable polishing power. It is important for expression. Both octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane are cyclic organic siloxane compounds and have good lubricity, and can improve the operability of the polisher and the wiping property of polishing debris.

The (d) thickening stabilizer used in the present invention is an associative alkali-soluble acrylic polymer, and it is particularly preferable to use an associative alkali-soluble acrylic polymer obtained by copolymerizing acrylic acid and an acrylic acid ester.
These impart the necessary viscosity to the liquid, and at the same time, the dispersion stability of the abrasive particles and the emulsion stability of the fatty oil containing triglyceride having 18 carbon atoms in the liquid paraffin and the higher unsaturated fatty acid in the molecule and the diluting solvent. Has the effect of expressing.
In addition, the effect can be obtained with a relatively small amount, and the polishing action is less likely to be adversely affected. In addition, neutral to weakly alkaline and stable preparation is possible. By neutralizing these in combination with an appropriate alkaline agent, the entire polishing composition can be freely adjusted into a low-viscosity liquid, a high-viscosity liquid, or a paste.
Examples of such thickeners are Primal RM-4, Primal RM-5, Primal TT-615, Primal TT-935, Primal TT-950 (above Rohm and Haas Japan Co., Ltd.), PEMULEN TR. -1, PEMULEN TR-2 (above BFGoodrich) and the like can be mentioned.
The type of alkaline agent is not particularly limited, and examples of such alkaline agents include sodium hydroxide, potassium hydroxide, sodium carbonate, ammonia, trimethylamine, monoethanolamine, diethanolamine, triethanolamine, and monoisopropanolamine. , Morpholine and the like.
Other thickeners may be used in combination with the thickener used in the present invention as long as the performance is not impaired. Examples of such thickeners include polyvinyl alcohol, carboxymethyl cellulose, cellulose nanofibers, xanthan gum and the like. These may be used alone or in combination of two or more.

It is important that the composition of the present invention does not contain a surfactant selected from a cationic surfactant, an anionic surfactant, and a nonionic surfactant. If a surfactant selected from a cationic surfactant, an anionic surfactant, and a nonionic surfactant is present in the composition, when the buffed wet surface is wiped off with a cloth at the end of the buffing work. , It was found that it was difficult to wipe off and uneven gloss was likely to occur after buffing.

Further, as long as the gist of the present invention is not impaired, the present invention does not prevent the use of a volatile organic solvent having a boiling point range of 100 to 220 ° C. in addition to the lubricating oil and the thickening stabilizer. Examples of such organic solvents include aromatic, ether, ester, terpene and glycol ether solvents.

Further, in the present invention, terpenoids having a boiling point of 200 ° C. or higher and / or heavy aromas such as terpineol (terpineol) and / or solvent naphtha (coal tar naphtha) are blended in an appropriate amount with respect to the composition to promote swelling and softening of the coating film. , Can be used for the purpose of increasing the polishing power of the polishing composition.

Water is an essential component for making a polishing composition into an aqueous emulsion dispersion, and constitutes a composition capable of safely handling an abrasive, a lubricating oil, and a thickening stabilizer as an aqueous emulsion dispersion. I am aiming.
The polishing composition of the present invention can be adjusted to any state from liquid to high-viscosity paste, and if necessary, various polymer thickeners and trace amounts of surfactants are used as long as the object of the present invention is not impaired. , Various waxes and resins, other abrasive powders, rust inhibitors, preservatives, pigments, fragrances and the like can be blended.

The present invention provides an excellent glossy surface with extremely little buffing and provides a comfortable working environment with less scattering of polishing debris, even though it has the same polishability and workability as the conventional polishing method. A buffing method that can be used, that is, during a buffing operation, after rough polishing using a polishing buff and an aqueous emulsified buff polishing composition, the finishing buff and the same aqueous emulsified buff polishing composition used for the polishing are used. It is a buff polishing method characterized by finish polishing using It is an object of the present invention to provide a buffing method and a buffing composition which can be highly finished and polished using a buffing composition.

In the conventional polishing method, since large-grained abrasive particles are used in the aqueous emulsified buff polishing composition for polishing, large and deep buffs are generated although they have polishing power, and the buffs are completely removed in the finishing process. Although a great deal of time and labor was required for this, the aqueous emulsified buff polishing composition of the present invention has sufficient polishing power and buffing is generated despite the use of small-grained polishing particles. It is possible to perform from the polishing process to the finishing process simply by changing the buff to be combined with the same aqueous emulsified buff polishing composition.
Although it is not clear why it has sufficient polishing power despite the use of small particle size abrasive particles, the metal oxides used as abrasive particles with a true density of 7 or more are
It is predicted that the mechanical energy will be larger and the polishing power will be larger than the conventionally widely used alumina with the same particle size (true density 4), and the performance will be improved by the lubricant composition of the aqueous emulsified buff polishing composition of the present invention. It is presumed that this is the result of maximizing the results.

In this way, during the buff polishing operation, after rough polishing using the polishing buff and the aqueous emulsified buff polishing composition of the present invention, the finishing buff and the same aqueous emulsified buff polishing composition used for the polishing are used. In the buff polishing method characterized by finish polishing, the buff grain in the polishing process becomes extremely fine, so that the load in the finishing process is reduced and extremely good finishing can be performed. Further, since the aqueous emulsified buff polishing composition of the present invention does not select the type of coating film (type of repair coating film and cured state), it is highly versatile, has a relatively small amount of polishing particles, and is in an appropriate wet state. Since you can work while maintaining the above, there is less dust generation, and you can expect very useful effects such as being able to work comfortably.

Next, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples.

Liquid paraffin (manufactured by Crompton) 1.5 g, castor oil (containing 90% ricinoleic acid triglyceride / manufactured by Itoh Oil Chemicals Co., Ltd.) 0.5 g, light oil (manufactured by JXTG Energy Co., Ltd./boiling point 140-400 ° C) 4 g and kerosene (JXTG) Energy Co., Ltd./Boiling point 140-310 ° C.) 8 g was mixed. Next, 1.5 g of an associative alkali-soluble acrylic polymer (Primal TT-615 manufactured by Rohm and Haas Japan Co., Ltd./active ingredient concentration 30%) and 0.5 g of glycerin (manufactured by Kao Corporation) were mixed in 73.7 g of water. After that, it was put into the oil phase and emulsified. Further, 10 g of stannic oxide (SH-S manufactured by Nippon Kagaku Sangyo Co., Ltd.) having an average volume of 50% and a particle size of 1 μm was uniformly wet-dispersed, and then 0.3 g of morpholine was added as an alkaline agent to thicken the composition. -Stabilized to obtain the aqueous emulsified buff polishing composition of Example 1.

Liquid paraffin (manufactured by Crompton) 3 g, castor oil (containing 90% ricinoleic acid triglyceride / manufactured by Itoh Oil Chemicals Co., Ltd.) 1 g, light oil (manufactured by JXTG Energy Co., Ltd./boiling point 140-400 ° C) 8 g and kerosene (manufactured by JXTG Energy Co., Ltd.) / Boiling point 140-310 ° C.) 8 g was mixed. Next, 1.3 g of an associative alkali-soluble acrylic polymer (Primal TT-615 manufactured by Rohm and Haas Japan Co., Ltd./active ingredient concentration 30%) and 1 g of glycerin (manufactured by Kao Corporation) were mixed in 62.4 g of water. It was put into the oil phase and emulsified. Further, 15 g of stannic oxide (SH-S manufactured by Nippon Kagaku Sangyo Co., Ltd.) having an average volume of 50% and a particle size of 1 μm was uniformly wet-dispersed, and then 0.3 g of morpholine was added as an alkaline agent to thicken the composition. -Stabilized to obtain the aqueous emulsified buff polishing composition of Example 2.

Liquid paraffin (manufactured by Crompton) 1 g, castor oil (containing 90% ricinoleic acid triglyceride / manufactured by Itoh Oil Chemicals Co., Ltd.) 0.3 g, light oil (manufactured by JXTG Energy Co., Ltd./boiling point 140-400 ° C) 2 g and kerosene (JXTG Energy Co., Ltd.) 10 g manufactured by the company / boiling point 140 to 310 ° C.) was mixed. Next, 2.0 g of an associative alkali-soluble acrylic polymer (Primal TT-615 manufactured by Rohm and Haas Japan Co., Ltd./30% active ingredient concentration) and 0.3 g of glycerin (manufactured by Kao Corporation) were mixed in 79.1 g of water. After that, it was put into the oil phase and emulsified. Further, 5 g of stannic oxide (SH-S manufactured by Nippon Kagaku Sangyo Co., Ltd.) having an average volume of 50% and a particle size of 1 μm was uniformly wet-dispersed, and then 0.3 g of morpholine was added as an alkaline agent to thicken the composition. -Stabilized to obtain the aqueous emulsified buff polishing composition of Example 3.

Liquid paraffin (manufactured by Crompton) 1.5 g, castor oil (containing 90% ricinoleic acid triglyceride / manufactured by Itoh Oil Chemicals Co., Ltd.) 0.5 g, light oil (manufactured by JXTG Energy Co., Ltd./boiling point 140-400 ° C) 4 g and kerosene (JXTG) Energy Co., Ltd./Boiling point 140-310 ° C.) 8 g was mixed. Next, 1.5 g of an associative alkali-soluble acrylic polymer (Primal TT-615 manufactured by Rohm and Haas Japan Co., Ltd./active ingredient concentration 30%) and 0.5 g of glycerin (manufactured by Kao Corporation) were mixed in 73.7 g of water. After that, it was put into the oil phase and emulsified. Further, 10 g of stannic oxide (SH manufactured by Nippon Kagaku Sangyo Co., Ltd.) having an average volume of 50% and a particle size of 4.5 μm was uniformly wet-dispersed, and then 0.3 g of morpholine was added as an alkaline agent to thicken the composition. -Stabilized to obtain the aqueous emulsified buff polishing composition of Example 4.

Liquid paraffin (manufactured by Crompton) 1.5 g, castor oil (containing 90% ricinoleic acid triglyceride / manufactured by Itoh Oil Chemicals Co., Ltd.) 0.5 g, light oil (manufactured by JXTG Energy Co., Ltd./boiling point 140-400 ° C) 4 g and TSF404 (momentive) -8 g of octamethylcyclotetrasiloxane / boiling point 175 ° C. manufactured by Performance Materials Japan GK was mixed. Next, 1.5 g of an associative alkali-soluble acrylic polymer (Primal TT-615 manufactured by Rohm and Haas Japan Co., Ltd./active ingredient concentration 30%) and 0.5 g of glycerin (manufactured by Kao Corporation) were mixed in 73.7 g of water. After that, it was put into the oil phase and emulsified. Further, 10 g of stannic oxide (SH-S manufactured by Nippon Kagaku Sangyo Co., Ltd.) having an average volume of 50% and a particle size of 1 μm was uniformly wet-dispersed, and then 0.3 g of morpholine was added as an alkaline agent to thicken the composition. -Stabilized to obtain the aqueous emulsified buff polishing composition of Example 5.

Liquid paraffin (manufactured by Crompton) 1.5 g, castor oil (containing 90% ricinoleic acid triglyceride / manufactured by Itoh Oil Chemicals Co., Ltd.) 0.5 g, light oil (manufactured by JXTG Energy Co., Ltd./boiling point 140-400 ° C) 4 g and TSF404 (momentive) -8 g of octamethylcyclotetrasiloxane / boiling point 175 ° C. manufactured by Performance Materials Japan GK was mixed. Next, 1.5 g of an associative alkali-soluble acrylic polymer (Primal TT-615 manufactured by Rohm and Haas Japan Co., Ltd./active ingredient concentration 30%) and 0.5 g of glycerin (manufactured by Kao Corporation) were mixed in 73.7 g of water. After that, it was put into the oil phase and emulsified. Further, 10 g of cerium oxide (TREIBACHER INDUSTRIE AG Auerpol FG245 purity 99.9%) having an average volume of 50% and a particle size of 1 μm was uniformly wet-dispersed, and then 0.3 g of morpholine was added as an alkaline agent to thicken the composition. After stabilization, the aqueous emulsified buffing composition of Example 6 was obtained.

Liquid paraffin (manufactured by Crompton) 1.5 g, olive oil (containing 75% oleic acid triglyceride / manufactured by Kaneda Co., Ltd.) 0.5 g, light oil (manufactured by JXTG Energy Co., Ltd./boiling point 140-400 ° C) 4 g and kerosene (JXTG Energy Co., Ltd.) Manufactured by the company / boiling point 140-310 ° C.) 8 g was mixed. Next, 1.5 g of an associative alkali-soluble acrylic polymer (Primal TT-615 manufactured by Rohm and Haas Japan Co., Ltd./active ingredient concentration 30%) and 0.5 g of glycerin (manufactured by Kao Corporation) were mixed in 73.7 g of water. After that, it was put into the oil phase and emulsified. Further, 10 g of stannic oxide (SH-S manufactured by Nippon Kagaku Sangyo Co., Ltd.) having an average volume of 50% and a particle size of 1 μm was uniformly wet-dispersed, and then 0.3 g of morpholine was added as an alkaline agent to thicken the composition. -Stabilized to obtain the aqueous emulsified buff polishing composition of Example 7.

Liquid paraffin (manufactured by Crompton) 1.5 g, safflower oil (containing 73% linoleic acid triglyceride / manufactured by Kaneda Co., Ltd.) 0.5 g, light oil (manufactured by JXTG Energy Co., Ltd./boiling point 140-400 ° C) 4 g and kerosene (JXTG) Energy Co., Ltd./Boiling point 140-310 ° C.) 8 g was mixed. Next, 1.5 g of an associative alkali-soluble acrylic polymer (Primal TT-615 manufactured by Rohm and Haas Japan Co., Ltd./active ingredient concentration 30%) and 0.5 g of glycerin (manufactured by Kao Corporation) were mixed in 73.7 g of water. After that, it was put into the oil phase and emulsified. Further, 10 g of stannic oxide (SH-S manufactured by Nippon Kagaku Sangyo Co., Ltd.) having an average volume of 50% and a particle size of 1 μm was uniformly wet-dispersed, and then 0.3 g of morpholine was added as an alkaline agent to thicken the composition. -Stabilized to obtain the aqueous emulsified buff polishing composition of Example 8.

Liquid paraffin (manufactured by Crompton) 1.5 g, flax oil (containing 60% linolenic acid triglyceride / manufactured by Kaneda Co., Ltd.) 0.5 g, light oil (manufactured by JXTG Energy Co., Ltd./boiling point 140-400 ° C) 4 g and kerosene (JXTG energy) Manufactured by Co., Ltd./Boiling point 140-310 ° C.) 8 g was mixed. Next, 1.5 g of an associative alkali-soluble acrylic polymer (Primal TT-615 manufactured by Rohm and Haas Japan Co., Ltd./active ingredient concentration 30%) and 0.5 g of glycerin (manufactured by Kao Corporation) were mixed in 73.7 g of water. After that, it was put into the oil phase and emulsified. Further, 10 g of stannic oxide (SH-S manufactured by Nippon Kagaku Sangyo Co., Ltd.) having an average volume of 50% and a particle size of 1 μm was uniformly wet-dispersed, and then 0.3 g of morpholine was added as an alkaline agent to thicken the composition. -Stabilized to obtain the aqueous emulsified buff polishing composition of Example 9.

(Comparative Example 1)

To the composition of Example 1, 1 g of polyoxyethylene sorbitan monooleate (HLB: 15) was added as a nonionic surfactant and mixed uniformly to obtain the composition of Comparative Example 1.

(Comparative Example 2)
In the composition of Example 1, tin oxide was replaced with aluminum oxide (volume average particle size 1 μm) to obtain the composition of Comparative Example 2.

(Comparative Example 3)
In the composition of Example 1, stannic oxide was replaced with aluminum oxide (volume average particle size 8 μm) to obtain the composition of Comparative Example 3.
Examples 1-9 and Comparative Examples 1-3 are shown in the table of Table 1.

(Conventional example 1)
A commercially available polishing compound (an aqueous emulsified buff polishing composition containing FMC8000-LS / nonionic surfactant manufactured by Ishihara Chemical Co., Ltd. and containing about 50% of aluminum oxide having a volume average particle diameter of about 20 μm as polishing particles). Conventional example 1 is used.

(Conventional example 2)
A commercially available finishing compound (FMC8040-LS manufactured by Ishihara Chemical Co., Ltd./an aqueous emulsified buff polishing composition containing about 10% aluminum oxide having a volume average particle diameter of about 5 μm as polishing particles without containing a surfactant) has been conventionally used. Example 2 was used.

(I) Performance evaluation method of polishing process (paper grain removal process) The surface of a black bonnet coating (painted with 3: 1 type urethane paint for repair) of an ordinary passenger car was water-polished using water-resistant paper # 1500. Using the aqueous emulsified buff polishing composition (Examples 1 to 9 and Comparative Examples 1 to 3) and the conventional example 1 and the wool buff, the paper polishing marks are corrected, the removal speed of the paper grain (paper polishing scratches), and the polishing debris. The dry state and wiping property, powdering property, buff residue and gloss after finishing, and polisher handling property were evaluated.
Buffing conditions : Electric polisher (PE-2010 manufactured by Ryobi Co., Ltd.)
Polisher rotation speed: 1200 rpm
Buff: Meister Wool Buff (manufactured by Ishihara Chemical Co., Ltd.)
Polisher movement speed: 10 cm / 3 seconds
Average torque ・ ・ ・ 6N ・ m
(II) Performance Evaluation Method of Finishing Step (Buffing Removal Step of Polishing Step) The polishing marks of the polishing step are compared with the aqueous emulsifying buff polishing composition (Examples 1 to 9, Comparative Examples 1 to 3) and Conventional Example 2. Finish polishing was performed using a sponge buff, and the removal speed of the buffed grain, the dry state and wiping property of the polishing debris, the powdering property, the buffed grain residue and gloss after finishing, and the handleability of the polisher were evaluated. The state of the remaining buffs after finishing could not be discriminated by visual evaluation under fluorescent lamps, so the condition was performed under mercury lamps.
Buffing conditions : Electric polisher (PE-2010 manufactured by Ryobi Co., Ltd.)
Polisher rotation speed: 1200 rpm
Buff: Meister Sponge Buff (manufactured by Ishihara Chemical Co., Ltd.)
Polisher movement speed: 10 cm / 3 seconds
Average torque ・ ・ ・ 7N ・ m

The respective evaluation results are shown in Tables 2 and 3.

(Evaluation criteria)
(B) Paper grain removal speed: Comparison with the time required for the work of Conventional Example 1.
◯: It takes almost the same working time as the conventional example 1. (0.8-1.2 times)
Δ: It takes a longer working time than the conventional example 1. (1.2 to 1.8 times)
×: Paper cannot be removed (more than double)
(B) Finished state (buffed eyes) ・ ・ ・ Visual evaluation ◎: Much finer than conventional example 1 ○: Finer than conventional example 1 △: Equivalent to conventional example 1 (c) Finished state (gloss) ・ ・ ・ 60 ° Mirror gloss ◎: 90 or more (much better than conventional example 1)
◯: 85 to 90 (better than Conventional Example 1)
Δ: 80 to 85 (equivalent to Conventional Example 1)
(D) Polisher operability (response when operating)
⊚: Feels much lighter than Conventional Example 1 ○: Feels lighter than Conventional Example 1 △: Almost the same as Conventional Example 1 (e) Wiping property of polishing debris (manual work)
⊚: Much easier to wipe than Conventional Example 1 ○: Easier to wipe than Conventional Example 1 Δ: Almost the same as Conventional Example 1 (f) Dustability (visual)
⊚: Much less dusting than in Conventional Example 1. ○: Powdering is less noticeable than in Conventional Example 1. ×: Powdering is worrisome.

(Evaluation criteria)
(B) Buff eye removal speed: Comparison with the time required for the work of Conventional Example 2.
◯: It takes almost the same working time as the conventional example 2. (0.8-1.2 times)
Δ: It takes a longer working time than the conventional example 2. (1.2 to 2 times)
(B) Finished state (buffed eyes): Visual evaluation after washing with water ◎: Buffed eyes can be removed from conventional example 2 ○: Equivalent to conventional example 2 Δ: Inferior to conventional example 2 (c) Finished state (c) Gloss) ・ ・ ・ 20 ° mirror gloss after washing with water ◎: 90 or more (better than Conventional Example 2)
◯: 85 to 90 (equivalent to conventional example 2)
Δ: 80 to 85 (inferior to conventional example 2)
(D) Polisher operability (response when operating)
⊚: Feels lighter than Conventional Example 2 ○: Almost the same as Conventional Example 2 △: Feels heavier than Conventional Example 2 (e) Wipeability of polishing debris (manual work)
⊚: Easier to wipe than Conventional Example 2 ○: Almost the same as Conventional Example 2 Δ: Difficult to wipe than Conventional Example 2 (to) Dustability (visual)
⊚: Much less powder than in Conventional Example 2 ○: No worries about powdering compared to Conventional Example 2 △: No worries about powdering

Although the water-based emulsified buff polishing composition of the present invention has the same polishability and workability as the conventional polishing method, an excellent glossy surface with extremely little buffing is obtained, and polishing debris is scattered. A buff polishing method that can provide a less comfortable working environment, that is, during buff polishing work, after rough polishing using a polishing buff and the aqueous emulsified buff polishing composition of the present invention, for finishing buff and the polishing. It is a buff polishing method characterized by finish polishing using the same aqueous emulsified buff polishing composition used, and there is a possibility that the process can be remarkably shortened, and the industrial utility value is extremely high.

Claims (6)

It does not contain a surfactant selected from cationic surfactants, anionic surfactants, and nonionic surfactants, and the abrasive particles are metal oxides with a true density of 7 or more, and the average volume of the abrasive particles is 50%. The diameter is 1 to 5 μm, and (a) 2 to 20% by mass of abrasive particles, (b) 1 to 9% by mass of lubricating oil, (c) kerosene and / or light oil and / or octamethylcyclotetrasiloxane and / or decamethyl. Buffing step containing 2 to 20% (d) thickening stabilizer 0.1 to 2.0% by volume and 49.0 to 94.9% by volume of water selected from one or more of cyclopentasiloxane. An aqueous emulsifying composition for buffing and buffing that can be used in both buffing and buffing processes. (A) One or two selected from stannic oxide and / or cerium oxide is used as the polishing particles, and (b) the lubricating oil contains a triglyceride having 18 carbon atoms in the higher unsaturated fatty acid in the molecule. Use fatty oil, liquid paraffin and glycerin, and (c) use one or more selected from kerosene and / or light oil and / or octamethylcyclotetrasiloxane and / or decamethylcyclopentasiloxane as the diluting solvent, and ( D) The aqueous emulsifying composition for buffing and buffing according to claim 1, which can be used in both a buffing step and a buffing step using an associative alkali-soluble acrylic polymer as a thickening stabilizer. .. (A) One or two selected from stannic oxide and / or cerium oxide are used as the abrasive particles, and (b) any of oleic acid triglyceride, linoleic acid triglyceride, linolenic acid triglyceride, and linolenic acid triglyceride is used as the lubricating oil. One or more selected from kerosene and / or light oil and / or octamethylcyclotetrasiloxane and / or decamethylcyclopentasiloxane as a diluting solvent using fatty oil containing 1 type, liquid paraffin and glycerin. the use, and (d) thickening characteristics and to Luba that can be used for both the buffing step and buffing process according to claim 1 or claim 2 using an associative alkali-soluble acrylic polymer as a stabilizer Aqueous emulsifying composition for polishing and buffing. (B) Lubricating oil contains fatty oil containing any one of oleic acid triglyceride, ricinolic acid triglyceride, linoleic acid triglyceride, and linolenic acid triglyceride, liquid paraffin and glycerin, and liquid paraffin: glycerin = 7: 3-9. Fat oil: 1 (mass ratio) and containing any one of oleic acid triglyceride, ricinolic acid triglyceride, linoleic acid triglyceride, and linolenic acid triglyceride: (liquid paraffin and glycerin) = 30: 70 to 5: A water-based emulsifying composition for buffing and buffing, which can be used in both the buffing step and the buffing step according to any one of claims 1 to 3 of 95 (mass ratio). Claims 1 to buffing step, features and to Luba off polishing and buffing aqueous emulsion composition that can be used for both buff finishing process as claimed in any one of claims 4, polishing buff (Urubafu) It applied to, after the buffing operation claim 1 or buffing steps, features and to Luba off polishing and buffing aqueous that can be used for both buffing process as claimed in any one of claims 4 A buffing and buffing method characterized by applying an emulsifying composition to a finishing buff (sponge buff) and performing a buffing work. The buffing according to claim 5, wherein the water-based emulsifying composition for buffing and buffing used in the buffing step and the water-based emulsifying composition for buffing and buffing used in the buffing step are the same composition. Combined buffing method.