Polyisocyanate addition products useful as mold release agents a

Details Polyisocyanate addition products useful as mold release agents a Polyisocyanate addition products useful as mold release agents a

1983-10-06

1984-10-23

Marquis, Melvyn I.

Coating processes

With post-treatment of coating or coating material

Heating or drying

264 466, 264338, 26433111, 528 18, 528 28, 528 29, 556414, 556419, 556420, 525474, B05D 302

Patent

active

044788932

ABSTRACT:
Polyisocyanate addition products are made by reacting a polysiloxane having isocyanate reactive end groups, excess polyisocyanate and a compound selected from the group consisting of aliphatic alcohols, primary aliphatic amines, secondary aliphatic amines and mixtures thereof having a molecular weight of from 75 to 5000 and at least one tertiary amino group and/or oxyalkylene unit. In a preferred embodiment, the polysiloxane is reacted with excess polyisocyanate and the reaction product is subsequently reacted with the alcohol and/or amine. The addition products of this invention are particularly useful as mold release agents in the production of molded lacquer coated plastics by the "in-mold coating process."

REFERENCES:
patent: 3726952 (1973-04-01), Boden et al.
patent: 3993606 (1976-11-01), von Bonin et al.
patent: 4024090 (1977-05-01), von Bonin et al.
patent: 4033912 (1977-07-01), Kleinmann et al.
patent: 4058492 (1977-11-01), von Bonin et al.
patent: 4098731 (1978-07-01), von Bonin et al.
patent: 4163830 (1979-08-01), Windemuth et al.

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