Polyisocyanate composition, block polyisocyanate composition, coating composition, aqueous coating composition, and coating base material
A polyisocyanate and composition technology, applied in polyurea/polyurethane coatings, coatings, latex paints, etc., can solve the problems of easy reaction with water and difficult dispersion of polyisocyanates, and achieve good water dispersibility and good appearance.
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[0337] Hereinafter, specific examples and comparative examples will be given to describe the present embodiment in more detail, but the present embodiment is not limited to the following examples and comparative examples unless the gist is exceeded. In Examples and Comparative Examples, the physical properties of the polyisocyanate composition and the blocked polyisocyanate composition were measured as follows. In addition, unless otherwise specified, "part" and "%" represent "mass part" and "mass %".
[0338] (Physical property 1) Viscosity
[0339] The viscosity was measured at 25° C. using an E-type viscometer (manufactured by Tokyo Keiki Co., Ltd.). For the measurement, a standard rotor (1°34'×R24) was used. The rotational speed is as follows.
[0340] 100r.p.m. (less than 128mPa·s)
[0341] 50r.p.m. (128mPa·s or more and less than 256mPa·s)
[0342] 20r.p.m. (256mPa·s or more and less than 640mPa·s)
[0343] 10r.p.m. (over 640mPa·s and less than 1280mPa·s)
[0344]...
manufacture example 1
[0381] Poly(oxyalkylene) alkyl ether phosphoric acid A-1
[0382] A four-necked flask equipped with a stirrer, a thermometer, a reflux condenser, a nitrogen blowing tube, and a dropping funnel was made into a nitrogen atmosphere, and polyethylene glycol monomethyl ether (trade name manufactured by Nippon Emulsifier Co., Ltd.) with a number average molecular weight of 428 was added. "MPG-130" (the average number of ethylene oxide repeating units: 9.0)) 70.2 g, 2-ethylhexyl acid phosphate (trade name "JP-508T" monomer / di Polymer (molar ratio) = 1 / 1) 86.9 g, under stirring, the temperature in the reactor was kept at 120°C for 4 hours to obtain poly (oxyalkylene) alkyl ether phosphoric acid A-1. (Oxyethylene) Alkyl Ether Phosphoric Acid.
manufacture example 2
[0384] Poly(oxyalkylene) alkyl ether phosphate A-2
[0385] A four-necked flask equipped with a stirrer, a thermometer, a reflux condenser, a nitrogen blowing tube, and a dropping funnel was made into a nitrogen atmosphere, and polyethylene glycol monomethyl ether (trade name manufactured by Nippon Emulsifier Co., Ltd.) with a number average molecular weight of 217 was added. "MPG" (average number of ethylene oxide repeating units: 4.2)) 35.6 g, 2-ethylhexyl acid phosphate (trade name "JP-508T" monomer / dimer manufactured by Johoku Chemical Industry Co., Ltd. (molar ratio) = 1 / 1) 86.9 g, under stirring, the temperature in the reactor was set at 120° C., and kept for 4 hours to obtain poly(oxygen) as poly(oxyalkylene) alkyl ether phosphate A-2. Ethylene) alkyl ether phosphoric acid.
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