Coating composite
A composition and coating technology, which is applied in anti-corrosion coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of insufficient curing, insufficient heat transfer of drying ovens, and large heat capacity of the coating to achieve chemical resistance Excellent quality and corrosion resistance, excellent gloss stability, and good chemical resistance
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[0109] Manufacturing example 1
[0110] Manufacture of acrylic resin solution
[0111] In the reaction vessel, 113 parts of mixed solvent (xylene / n-butanol=80 / 20) were charged and kept at 80°C. The following "mixture" was added dropwise over 4 hours, and then 8 parts of di-tert-butyl hydrogen peroxide was added. 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 with 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] Manufacturing of coating composition
Example Embodiment
[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, BARIFINE (Barifine) BF-20 (note 2) 40 parts (solid content), and talc MA (note 6) 30 Part (solid content), TIPAQUE (タイペーク) CR-95 (Note 10) 6 parts (solid content), FASTONGN BLUE RSK (Note 11) 0.5 part 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, the pigment dispersion paste obtained in Step 1 above was added and stirred, followed by mixing TECHPOLYMER (テクポリマー) MBX-8 (Note 15) 8 Part, ethyl acetate was added to adjust the solid content to obtain a base coating with a solid content of 65% by mass.
[0120] Step 3: Mix 50 parts (solid content) of Sumidur N3300 (Note ...
Example
[0121] Examples 2 to 31 Coating composition 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 performed to obtain coating compositions No. 2 to No. 31.
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[0124]
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