coating composition
A composition and coating technology, which is applied in the direction of anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve problems such as insufficient curing, insufficient heat transfer of drying ovens, and large heat capacity of the coated object, so as to achieve chemical resistance Excellent quality and corrosion resistance, excellent gloss stability, and good chemical resistance
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manufacture example 1
[0110] Manufacture of acrylic resin solutions
[0111] In the reaction vessel, put 113 parts of mixed solvent (xylene / n-butanol=80 / 20), keep it at 80°C, add the following "mixture" dropwise over 4 hours, then add 8 parts of di-tert-butylhydrogen The oxide was kept at 80° C. for 3 hours to react, and further adjusted with a mixed solvent (xylene / n-butanol=80 / 20) to produce an acrylic resin solution having a solid content of 60% by mass. The obtained acrylic resin solution had a hydroxyl value of 94.9 mgKOH / g, an acid value of 3.9 mgKOH / g, and a weight average molecular weight of 11,000.
[0112] "mixture"
[0113]
[0114] (Note 1) Placcel FM-3: trade name, manufactured by Daicel Chemical Industry Co., Ltd.; ε-caprolactone-modified vinyl monomer of 2-hydroxyethyl acrylate.
[0115] Manufacture of coating compositions
Embodiment 1
[0116] Example 1 Coating Composition No.1
[0117] Coating composition No. 1 was obtained through the following steps 1 to 3.
[0118] Step 1: Using a ball mill, add 20 parts (solid content) of the acrylic resin solution obtained in Production Example 1, 40 parts (solid content) of BARIFINE (Barifine) BF-20 (Note 2), 30 parts of talc MA (Note 6) 1 part (solid content), 6 parts (solid content) of TIPAQUE (タイペーク) CR-95 (Note 10), 0.5 parts of FASTONGN BLUE RSK (Note 11) and an appropriate amount of ethyl acetate were dispersed for 12 hours to obtain a pigment dispersion paste.
[0119] Step 2: To 80 parts (solid content) of the acrylic resin solution obtained in Production Example 1, add the pigment dispersion paste obtained in the above Step 1 and stir, then mix TECHPOLYMER MBX-8 (Note 15)8 part, ethyl acetate was added to adjust the solid content to obtain a base paint with a solid content of 65% by mass.
[0120] Step 3: 50 parts (solid content) of Sumidur N3300 (Note 18) w...
Embodiment 2 to 31
[0121] Examples 2 to 31 Coating compositions No.2 to No.31
[0122] Except for the mixed contents in Table 1 and Table 2, the same operation as in Example 1 was carried out to obtain coating composition No.2 to No.31.
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