Process for producing a water-dispersion of polyurethane resin a

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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524539, 524839, 524840, C08J 300, C08K 320, C08L 7500

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057123420

ABSTRACT:
The present invention relates to a process for production of a water-dispersion of polyurethane resin by an organic acid-oxirane ring opening reaction and to an water-borne paint composition containing the resin made thereby, wherein said a water-dispersion of polyurethane resin is obtained by reacting polyisocyanate and the following polyols:
a) A polyol grafted with a long chain alkyl group obtained by organic acid-oxirane ring opening reaction;
b) Neutralized dimethyl alkyl acid of 0.1 to 100 milliequivalents and polyethylene glycol of 10 to 2,000 number average molecular weight as functional groups for water-dispersion of synthesized resin.
c) Polyol having at least one or more hydroxyl groups on termini and a number average molecular weight of 10 to 2,000.
The water-borne paint composition containing a water-dispersion of polyurethane resin, of the present invention, has such advantages as realizing a coating layer of rich gloss, excellence in anti-water and anti-chipping resistance, good storability and effective sprayability.

REFERENCES:
patent: 3412054 (1968-11-01), Milligan et al.
patent: 3954899 (1976-05-01), Chang et al.
patent: 4314918 (1982-02-01), Birkmeyer et al.
patent: 4423179 (1983-12-01), Guagliardo
patent: 4812535 (1989-03-01), Dervan et al.

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