Internal mold release for reaction injection molded polyurethane

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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264 51, 2643281, 2643286, 2643288, 524750, 524758, 524773, 524778, 524783, 528 49, 528 70, C08L 7504

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045858292

ABSTRACT:
A method of imparting internal mold release properties to reaction injection molding polyurethane compositions by the addition of a perfluoroalkylorganocarboxylic acid or a salt thereof. This invention also relates to the production of novel perfluoroalkylorganodibutyltindioxide compounds which are inherently catalytic and can also impart the property of internal mold releasability to RIM compositions.

REFERENCES:
patent: 3726952 (1972-04-01), Boden et al.
patent: 4111861 (1978-09-01), Godlewski et al.
patent: 4118235 (1978-10-01), Horiuchi et al.
patent: 4311764 (1982-01-01), Franz
(2) DuPont Trade Literature Publication "Zonyl Fluorosurfactants".
U.S. Appl. Ser. No. 509,134, filed Jun. 29, 1983.

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