Method for producing aqueous emulsion of polyurethane

Details Method for producing aqueous emulsion of polyurethane Method for producing aqueous emulsion of polyurethane

1999-01-19

2000-12-05

Niland, Patrick D.

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...

524507, 524589, 524590, 524591, 524840, 528 44, C08J 300, C08K 320, C08L 7500, C08G 1800

Patent

active

061568406

ABSTRACT:
Provided is a method for producing a polyurethane (PU) emulsion having good solvent resistance and water resistance and having good compatibility with other aqueous emulsions to give stable mixtures with them. The method comprises reacting (A) a PU prepolymer having an isocyanate group in the molecule, (B) a modified PVA having at least one member selected from the group consisting of an amino group, a primary hydroxyl group and an acetoacetyl group and (C) a low-molecular compound having an amino group and/or a hydroxyl group, in an aqueous medium.

REFERENCES:
patent: 5652299 (1997-07-01), Nakajima et al.
Patent Abstracts of Japan, vol. 006, No. 114 (C-110), Jun. 25, 1982, JP 57 040575, Mar. 6, 1982.
Patent Abstracts of Japan, vol. 096, No. 001, Jan. 31, 1996, JP 07 247463, Sep. 26, 1995.
Derwent Abstract, AN 83-774233, JP 58 141274, Aug. 22, 1983.

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