JP5154065B2 - Coating material composition - Google Patents

Description

  The present invention relates to a coating material composition for forming embossed irregularities.

  In order to add functions such as waterproofing, chemical resistance and impact strength to floors in kitchen rooms, test rooms, chemical / chemical factories, electronic circuit factories, etc., urethane resin, epoxy resin, A thermosetting resin such as is often applied. In particular, the method of spreading the resin with a trowel or the like with a thickness of about 0.4 to 2 mm and finishing it smoothly by the action of gravity is called casting and is widely applied regardless of whether it is urethane resin or epoxy resin. Yes.

  Conventionally, the thick flooring is mainly solvent-free type containing almost no water or organic solvent, and the finish is glossy, mirror-like smooth, and the unevenness of thickness is easily noticeable. was there. Further, as a means for solving this problem, a top coat such as matte can be applied as a finishing material, but there are restrictions on the combination of adhesion and the like in addition to the process and construction period.

  A coating body formed by solidifying the coating solid, an outer shell dispersed in the coating body and formed of a wall material, and a microcapsule made of a core material enclosed in the outer shell. The surface of the coating layer was formed by destroying the outer shell of the microcapsule to remove the core material in the outer shell, or removing the core material and the broken outer shell. A non-slip floor finish provided with a large number of micropores, and a manufacturing method and a coating composition for polishing the surface of a coating layer when manufacturing this non-slip floor finish are disclosed. . (Patent Document 1)

  (A) A film-forming organic binder and (B) a fibrous organic polymer having an average length of 0.2 to 10 mm that is not completely melted and / or mixed with (A) at the film-forming temperature. A coating composition characterized in that it is contained as a coating composition capable of finishing a concavo-convex pattern exhibiting fine streaks is disclosed. (Patent Document 2)

JP 2004-11621 A Japanese Patent Publication No. 6-89296

  The paint used on the walls and the like contains water and organic solvents, and there are various gloss and surface finishing methods, but the paint floor exposed to harsh conditions such as durability is solvent-free and is a thermosetting resin There are many epoxy resins and urethane resins, and there is no solvent, the film thickness becomes large, uneven thickness and uneven coating are likely to occur, and it is difficult to eliminate the gloss because of the absence of solvent, and uneven coating and uneven thickness are the design Was disturbing sex.

  The problem to be solved is to provide a coating floor that is solvent-free and has embossed irregularities in which uneven coating and uneven thickness are inconspicuous.

The invention of claim 1 is a solvent-free coating composition that does not contain water, and is an average length of 10 to 100 μm of fibrous cellulose powder that is not colored fibers, and is 0.3 to 5% based on the weight part of the composition. seen containing a coating flooring composition characterized by forming an embossed tone uneven curing the finished surface of the coated flooring compositions, by which is embossed tone irregularities formed, uneven coating thickness nonuniformity and the like It is inconspicuous and has a high design finish.

  The invention of claim 2 is a coating material composition in which the coating material composition of claim 1 is made of an epoxy resin or a urethane resin, embossed irregularities are formed, and uneven coating, uneven thickness, etc. are inconspicuous, In addition to a high design finish, it is a highly durable coating.

  By including the cellulose powder in the solventless coating floor composition of the present invention, embossed irregularities can be formed on the finished surface, and thus uneven coating, uneven thickness, etc. are not noticeable, resulting in a high design finish. Furthermore, by using an epoxy resin or a urethane resin, a highly durable flooring is obtained.

  The present inventors comprise an epoxy resin composition comprising an epoxy resin, a diluent, an extender pigment, a color pigment, an additive, a polyamine curing agent, a polyol, a diluent, an extender pigment, a color pigment, an additive, and an isocyanate compound. In the urethane resin composition, by including fibrous cellulose powder having an average length of about 10 to 100 μm in the composition, embossed unevenness is obtained, and the finish of the surface is not known, and the finish has high design properties. I found out that The effective addition range is 0.3 to 5% with respect to the total weight part of the blend. Here, the embossed tone is uneven on the surface of the coating film as in the substitute photo of FIG. 1, and has no sharpness as a mirror surface compared to the general coating floor of the substitute photo in FIG. It is possible to prevent appearance design deterioration such as defective finishing. Moreover, since there is unevenness other than low gloss, the design on the use surface can be maintained without the shoe mark and the like. This finish shows that the cellulose fibers are irregularly arranged and greatly affect the emboss formation by observation of the surface layer of the microscope.

  Although short fibers can exhibit this effect, cellulose powder is preferred from the viewpoint of dispersion and viscosity characteristics during mixing. Commercially available products of this cellulose powder include KC floc W50, W-100G, W-200G, W-300G, W-400G (Nippon Paper Chemical Co., Ltd., trade name).

  The epoxy resin used in the epoxy resin composition is bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol AD type epoxy resin or the above hydrogenated epoxy resin, novolac type epoxy resin, glycidyl ester type epoxy resin, urethane modified epoxy resin. , Nitrogen-containing epoxy resins, epoxy resins derived from alcohols, rubber-modified epoxy resins derived from terminal carboxyl groups NBR, flame retardant epoxy resins containing bromine, alicyclic epoxy resins, etc. It is preferable to contain at least two epoxy groups in the molecule from the viewpoints of high reactivity during curing and that the cured product can easily form a three-dimensional network. More preferable compounds include epichlorohydrin-bisphenol A type epoxy resin, epichlorohydrin-bisphenol F type epoxy resin and other novolak type epoxy resins, but the present invention is not limited to this and any generally known epoxy resin may be used. Can be used.

  Examples of the diluent for the epoxy resin composition include butyl glycidyl ether, phenyl glycidyl ether, alkyl glycidyl ether, 1,6 hexanediol diglycidyl ether, neopentyl glycol diglycidyl ether and the like, but the present invention is not limited thereto. It is not something. Specific examples of the non-reactive diluent include benzyl alcohol or phthalate plasticizers such as dioctyl phthalate butyl benzyl phthalate, but the present invention is not limited to these.

  The polyamine type curing agent used as a curing agent for the epoxy resin composition is triethylenetetramine, tetraethylenepentamine, diethylaminopropylamine, N-aminoethylpiperazine, m-xylylenediamine, m-phenylenediamine, diaminodiphenylmethane, diaminodiphenyl. Examples include amines such as sulfone, isophoronediamine, 2,4,6-tris (dimethylaminomethyl) phenol, tertiary amine salts, polyamide resins, imidazoles, dicyandiamides, ketimines, etc. It is not limited to.

  Polyols used in the urethane resin composition include polyester polyols, polyether polyols, acrylic polyols and the like, and preferable examples include castor oil-modified polyols.

  Examples of the diluent for the urethane resin composition include alcohols, ester derivatives of carboxylic acids, and xylene resins.

  The isocyanate compound used as a curing agent for the urethane resin composition is tolylene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (HDI), hydrogenated diphenylmethane diisocyanate, hydrogenated tolylene diisocyanate, xylylene diisocyanate, Isophorone diisocyanate and the like can be used, and those containing polynuclear polyphenylene polymethyl polyisocyanate (hereinafter abbreviated as polymeric MDI) are preferred examples. Examples of commercially available products include Sumidur 44V10, Sumidur 44V20 (Sumitomo Bayer Urethane Co., Ltd., trade name), Coronate 3520, MR-100 (Nippon Polyurethane Co., Ltd., trade name), and the like.

  In these compositions, talc, clay, calcium carbonate, calcium hydroxide, aluminum hydroxide, aluminum oxide, barium sulfate, silica powder, meteorite powder and the like are used as extender pigments for concealability and viscosity adjustment. Examples of coloring pigments for coloring the coating material include titanium oxide, iron oxide, chromium pigment, azo pigment, carbon black, and phthalocyanine copper. As other additives, a dispersant, an antifoaming agent, a desiccant or the like made of a modified silicone oil, an acrylic oligomer, a surfactant or the like can be added.

  As the generation behavior of the embossed irregularities, pores are generated in the coating material composition. As the amount of cellulose powder added increases, the number of pores increases, and the change of the pores changes from a small area to a large area. That is, it changes from a fine emboss to a large emboss.

Hereinafter, the present invention will be described in detail with reference to examples and comparative examples.
For the formulation, parts by weight are described simply as parts.
Further, the present invention is not limited to this.
Table 1 shows the results.

Mix 45 parts of Dismophen 1145, 40 parts of Whiten SB, 10 parts of synthetic zeolite, 5 parts of urethane toner, 0.3 part of KC floc, mix at 1200 rpm for 20 minutes with Disper, and then add 25 parts of Sumijoule 44V20 The mixture was mixed and stirred at 1200 rpm for 2 minutes with a disper to give Example 1.

Example 2 was performed in the same manner as Example 1 except that 1 part of KC floc was used.

Example 3 was carried out in the same manner as Example 1 except that the KC floc was changed to 2 parts.

Example 4 was performed in the same manner as Example 1 except that 5 parts of KC floc was used.

43 parts Epicoat 828, 9 parts Cardura E, 43 parts Whiten SB, 5 parts epoxy toner, 0.3 parts KC floc and mixed with Disper at 1200 rpm for 20 minutes, then 20 parts EH-471 The mixture was mixed and stirred at 1200 rpm for 2 minutes with a disper to give Example 5.

Example 6 was carried out in the same manner as Example 5 except that 1 part of KC floc was used.

Example 7 was carried out in the same manner as Example 5 except that the KC floc was changed to 2 parts.

Example 8 was carried out in the same manner as Example 5 except that 5 parts of KC floc was used.

Comparative Example 1
Comparative Example 1 was carried out in the same manner as Example 1 except that no KC floc was added.

Comparative Example 2
Comparative Example 2 was carried out in the same manner as Example 5 except that no KC floc was added.

The following compounds were used in the examples and comparative examples.
Polyol: Dismophen 1145 (trade name, Sumitomo Bayer Urethane Co., Ltd., castor oil-modified polyol, hydroxyl value: 230 mgKOH / g)
Urethane curing agent: Sumidur 44V20 (trade name of Sumitomo Bayer Urethane Co., Ltd., Polymeric MDI, NCO%: 32%)
Synthetic zeolite: having an average diameter of 5 μm and a pore size of 4 mm, compounded as a foaming inhibitor for urethane resin. eq)
Epoxy diluent: Cardura E (trade name of Japan Epoxy Resin Co., Ltd., tertiary fatty acid glycidyl ester)
Calcium carbonate powder: Whiten SB (Shiraishi Calcium Co., Ltd. trade name, calcium carbonate, average diameter: 2 μm)
Toner: Urethane toner (containing 52% of polyol having a hydroxyl value of 230 mg KOH / g) or epoxy toner (containing 43% of epoxy resin having an epoxy equivalent of 190 g / eq)
Cellulose powder: KC Flock W50 (Nippon Paper Chemical Co., Ltd. trade name)

The test body was applied to a 300 × 300 mm slate flat plate with the composition of Examples and Comparative Examples applied to a thickness of 1.0 mm using a hammer. The specimen was allowed to stand at 23 ° C. for 7 days.

Number of holes per 1 mm ² : The surface of the test specimen was observed with an optical microscope (Digital HF microscope VH-8000: manufactured by Keyence Corporation), and the number of holes was counted visually. The number of measurement points was 10, and the average value was the number of holes.

Uniformity / Leveling: The specimen was observed from a distance of 2 m, and the uniformity of the embossed irregularities was confirmed visually.
A case where the entire surface was uniform was evaluated as ◯, a portion where a non-uniform portion was slightly observed was evaluated as Δ, and a case where the entire surface was non-uniform was evaluated as ×.

Unevenness of foundation / coating unevenness: Evaluation was made on the inconspicuousness of unevenness of the foundation and change in coating thickness. A diamond cutter is used on the surface of a 300 × 300 mm concrete pavement plate to forcibly generate irregularities about 1 to 2 mm, and as an epoxy primer, Jolies JE-2570 (trade name bisphenol A type epoxy resin, Aika Industry Co., Ltd.) A modified polyamidoamine solvent type, solid content 30%) was applied with a short-hair roller to a coating amount of 0.2 kg / m ² , and then allowed to stand for 24 hours at 23 ° C./50%, was used as a base. The formulations of Examples and Comparative Examples were applied to a thickness of 1.0 mm using a hammer. The specimen was left to stand at 23 ° C. for 7 days. The specimen was observed from a place 2 m away and the thickness unevenness of the surface area of the joint portion was visually confirmed. The coating film surface irregularities were marked with ◯, the coating surface irregularities marked with Δ, and the coating film surface irregularities marked with ×.

  In solventless flooring materials where glossy smooth finish is common, by adding cellulose powder, embossed irregularities can be formed, and depending on the composition, it can be applied to solventless flooring materials in general, although the addition amount varies, and the finish is It is excellent in design in which defects such as coating unevenness are inconspicuous.

Example 1 A substitute photograph of a sample of size 7 cm × 14 cm. A sample is placed under a fluorescent lamp with a height of 2m. Images were taken at an angle of 45 degrees and a distance of 20 cm. Comparative Example 1 A substitute photograph of a sample of size 7 cm × 14 cm. Conditions are the same as in FIG.

Explanation of symbols

1.10 yen coin (for size comparison)

Claims (2)

A solventless coating floor composition without water, the fibrous cellulose powder having an average length 10~100μm not colored fiber 0.3 to 5 percent free free relative parts by weight of the composition, coating flooring A coating material composition characterized by forming embossed irregularities on a cured finished surface of a composition .   The flooring material composition of Claim 1 which consists of an epoxy resin or a urethane resin.