Lacquer coatings for polyurethane-molded articles

Details Lacquer coatings for polyurethane-molded articles Lacquer coatings for polyurethane-molded articles

1989-07-10

1991-05-21

Ivy, C. Warren

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...

524315, 524376, 524390, 524590, 264 466, 264308, C08K 554, C08L 7506

Patent

active

050176340

ABSTRACT:
An in-mold lacquer coating for producing a polyurethane-based molded article. The lacquer coating is mold-releasable without the aid of an external mold release agent, is re-coatable after de-molding without additional surface preparation, and comprising a mixture of a pre-reacted aliphatic polyurethane resin, a polydimethylsiloxane fluid mold-release agent, and an aromatic, acetate and alcoholic solvent system that is incompatible with the polydimethylsiloxane and that has constituents with specific gravities less than the polydimethylsiloxane and with varying rates of evaporation such that the ratio of aromatic to acetate and alcoholic solvents decreases as the solvent system evaporates.

REFERENCES:
patent: 3186964 (1965-06-01), Kookootsedes et al.
patent: 3551375 (1970-12-01), Dumoulin et al.
patent: 3893868 (1975-07-01), Klement et al.
patent: 4282285 (1981-08-01), Mohiuddin
patent: 4312672 (1982-01-01), Blahak et al.
patent: 4478893 (1984-10-01), Schonfelder et al.
patent: 4855347 (1989-08-01), Falline

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