JPH0742369B2 - Matted polyvinyl chloride paste composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a matting composition using a polyvinyl chloride paste (hereinafter referred to as PVC paste), and a matting means in products such as interior materials and leather. And a matte polyvinyl chloride paste composition that can be used as

[Problems to be Solved by Prior Art and Invention]

For products such as wallpaper, interior materials such as flooring, and leather that are made of polyvinyl chloride resin (hereinafter referred to as PVC resin), as a means of delustering the surface, post-processing There are known means for applying a matting agent such as an inorganic powder for surface matting treatment, and a method for directly kneading the above PVC resin with an inorganic filler such as aluminum hydroxide or calcium carbonate to produce a product. ing. As a method similar to the latter, there is also a method of using a so-called blending resin, which is a mixture of PVC resins having a particle size larger than that of ordinary PVC resins, particularly in flooring materials.

However, in the case of the former, the post-processing is only done, which leads to a decrease in production efficiency, and if a matting agent with a large particle size is used, it becomes impossible to apply a surface treatment film thinner than the particle size (matte (Since a part of the agent is exposed on the film surface), and in the case of post-processing, it is generally a good idea to partially deluster the product surface because a transparent material is applied on the surface. It was difficult due to reasons such as alignment.
On the other hand, in the latter case, a sufficient matting effect cannot be obtained unless 150 parts by weight or more of an additive such as aluminum hydroxide or calcium carbonate is kneaded with 100 parts by weight of the resin, and,
As described above, when a large amount of the additive is kneaded, the composition becomes opaque and there is a problem that the product has insufficient strength in terms of physical properties. For example, when it is used for wallpaper that requires coloring, more coloring agent is needed than transparent material, there is a risk of color mixing, and there is a drawback that the wallpaper becomes brittle in strength and easily broken. . Even when a blending resin is used, such a problem similarly occurs such that it is impossible to form a coating film having a resin having a large particle diameter or less, and the physical properties are deteriorated.

Therefore, in view of the above-mentioned problems of the prior art, the present inventor does not rely on matting treatment as a post-processing, and in a matting means by a kneading type into a resin, it has an unprecedented excellent gloss using PVC paste. Research has been advanced to provide an erasable composition.
Then, it was investigated to use white carbon, which is generally well known as a filler which can be added to rubber or the like to give a good reinforcing effect, as a matting agent for PVC paste.

However, white carbon usually has a primary particle size of m.
Since it is known to be used by being mixed with a solvent for the purpose of increasing the viscosity in the above paste because it is an extremely fine substance of the order of μ unit, when it was blended as a matting agent, the above carbon Due to the thickening effect of the paste, the viscosity of the paste increases significantly and the fluidity becomes poor, and as a result, it is difficult to apply such paste to coating or screen printing during product manufacturing. Became clear.

[Means for Solving the Problems]

As a result of further research based on the above findings, the present inventor found that PV
The present inventors have completed the present invention by discovering that the C paste is a combination of white carbon and a surfactant in combination, which is an excellent delustering composition in which the above-mentioned drawbacks are eliminated.

That is, the present invention, for 100 parts by weight of the resin in the polyvinyl chloride paste,
A matte polyvinyl chloride paste composition comprising 5 to 15 parts by weight of white carbon having a secondary particle diameter of 1 to 15 μm and 0.5 to 3 parts by weight of a surfactant.

Is the gist.

The PVC paste used in the present invention is also referred to as a so-called "plastisol", and is generally one in which fine PVC resin particles are uniformly dispersed in a plasticizer.

The PVC resin in this paste has a polymerization degree of 100.
Typical emulsion polymerization PVC of about 0 to 1700, high polymerization degree PVC with a degree of polymerization of 2000 to 4000, crosslinked PVC, etc. may be used alone or in appropriate combination of two or more kinds. You may use together. Above all, when high polymerization degree PVC or cross-linked PVC is used in combination or used alone, a product having less gloss and excellent strength can be easily obtained, and the amount of the surfactant mixed can be reduced. Also, PVC with general polymerization degree
When blending and using a high degree of polymerization PVC and / or a crosslinked PVC in combination, the proportion of the high degree of polymerization PVC and / or the crosslinked PVC is preferably 40 to 30 parts by weight with respect to 60 to 70 parts by weight of general PVC.

As the plasticizer in the paste, known ones used for this type of paste can be used, and it is preferable to add about 50 to 80 parts by weight to 100 parts by weight of the PVC resin. In the present invention, a stabilizer, a flame retardant, an antifungal agent, a filler, a foaming agent, a coloring agent and the like may be added to the paste as needed.

Any white carbon may be used as long as it has a secondary particle diameter within the above specified range, and specific examples thereof include silicic acid and silicate. If the particle size is less than 1 μm, the viscosity will be increased and the fluidity will be poor. On the contrary, if the particle size exceeds 15 μm, it will be impossible to form a coating film having a thickness less than the particle size or the surface will be smooth. It becomes inferior in sex. If the compounding ratio of the resin in the PVC paste to 100 parts by weight is less than 5 parts by weight, a sufficient matting effect cannot be obtained. Conversely, if it exceeds 15 parts by weight, the matting effect will not be extremely improved and the material cost will be low. However, the cost is high.

The surfactant used in the present invention has no thickening inhibiting effect when the compounding ratio is less than 0.5 parts by weight with respect to 100 parts by weight of the resin in the PVC paste, and exceeds 3 parts by weight, the thickening inhibiting effect is extremely high. No improvement is observed, and excessive blending may cause a bleeding phenomenon or a whitening phenomenon due to the activator and is uneconomical.

Anionic, which is conventionally known as a surfactant,
Various kinds of surfactants such as cationic, nonionic and amphoteric can be used. Specifically, as the anionic surfactant, alkyl sulfate ester salt, alkyl ether carboxylate salt, alkylbenzene sulfonate salt, α-olefin sulfonate salt, higher alcohol sulfate ester salt, alkyl ether sulfate salt, polyoxyphosphate ester salt, etc. The cationic surfactants include aliphatic amine salts, fatty acid quaternary ammonium salts, benzalkonium salts, pyridinium salts, imidazolinium salts, and the like, and the nonionic surfactants include polyamines. Oxyethylene alkyl ether, polyoxyethylene secondary alcohol ether, polyoxyethylene-polyoxypropylene block polymer, polyoxyethylene glycerin fatty acid ester, polyethylene glycol fatty acid ester, fatty acid monoglyceride, fatty acid Luke alkanolamides, polyoxyethylene alkylamine, sorbitan fatty acid esters, and the like, further carboxy betaine type amphoteric surface active agents, amino carboxylate, imidazolinium betaine.

The matting composition of the present invention having the above-mentioned constitution can be widely used in fields requiring matting treatment, and for example, various coating materials such as surface layer shape materials and matte pattern printing inks, printing means, etc. It is used as a delustering means for various products by applying a coating solution, and then heat-treating it to gel. This heat treatment is usually performed at 150 to 220 ° C.

〔Example〕

 Hereinafter, the present invention will be described in more detail with reference to examples.

Examples 1 to 4 and Comparative Examples 1 to 4 Each PVC paste having the composition shown in the table below was blended with a surfactant, white carbon and the like in the types and amounts shown in the table to prepare matte pastes. .

After leaving the obtained matte paste for one day, the paste viscosity at 20 ° C. was measured using a BH type viscometer (No. 4 rotor, 60 rpm).

Next, the matte paste was coated on flame-retardant paper to a thickness of 0.12 mm, heated at 210 ° C for 60 seconds, and the surface glossiness was measured with a gloss meter (Murakami Color Research Laboratory: GM-24). It was measured at.

Further, flame-retardant paper was coated with a knife coating method to a coating thickness of 0.12 mm, heated at 210 ° C. for 60 seconds, and the surface smoothness was visually observed to examine the coating properties of the matte paste.

The results of the above-mentioned paste viscosity, glossiness and coatability are also shown in the table below.

[Effects of the Invention] As described above, the matting composition of the present invention is prepared by combining a white paste having a specific particle size with a surfactant in a PVC paste, and thus has excellent fluidity and matting properties. It has an effect, as a result, it is possible to form a matte product using this composition directly, and further, the surface matting treatment which has been conventionally performed as a post-process is completely unnecessary, An inexpensive matte treatment can be easily performed.

Further, according to the present invention, it is possible to print with a gloss difference by appropriately distributing and using the normal compounded ink and the matte compounded ink comprising the product of the present invention in screen printing and the like. Moreover, since the product of the present invention has excellent fluidity and does not contain coarse particles such as blending resin, it can be applied to thin coating or screen printing without any problem.

Claims (1)

[Claims] 1. To 100 parts by weight of a resin in a polyvinyl chloride paste, 5 to 15 parts by weight of white carbon having a secondary particle size of 1 to 15 μm is added, and 0.5 to 3 parts by weight of a surfactant is added. A matte polyvinyl chloride paste composition characterized by comprising: