Aqueous dispersion of urethane vinyl composite resin

Details Aqueous dispersion of urethane vinyl composite resin Aqueous dispersion of urethane vinyl composite resin

1995-07-14

1997-07-29

Sergent, Rabon

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...

524591, 524798, 524839, 524840, 525455, 528 71, 528 75, C08L 7504, C09D17504, C08J 305

Patent

active

056522916

ABSTRACT:
An aqueous dispersion containing urethane vinyl composite resin which exhibits superior dispersability properties. The composite resin is obtained by graft polymerizing vinyl monomers with dispersable polyurethane. The polyurethane exhibits an acid value of at least 20. The dispersable polyurethane is obtained by reacting a urethane prepolymer having isocyanate groups at its end with a polyol compound obtained by the semi-esterification of polycarboxylic acid with benzene rings or its anhydride with trimethylol ethane or trimethylol propane. The urethane prepolymer is produced by reacting polyol compounds with poly-isocyanate compounds and ranges in molecular weight of from about 800 to 3000.

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patent: 4644030 (1987-02-01), Koewrigkeit et al.
patent: 5137961 (1992-08-01), Goos et al.
patent: 5173526 (1992-12-01), Vijayendran et al.

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