Bayer Corporation

Miles Inc.

Erik H Jonsson

Harald Pielartzik

Douglas A Wicks

Philip E Yeske

Rick L Archey

Robert J Kumpf

Aaron D Meltzer

Randall C Rains

Kristen L Parks

Raymond A Yourd

The invention relates to a thermoreversible process for the preparation of a hydantoin comprisng

Thermoreversible coating and a process for its manufacture

The present invention is directed to an improved internal mold release system for the production of high density molded SRIM parts, i.e. molded parts having a density of from 1.3 to 2.0 g/cc. In particular, the process involves reacting a reaction mixture comprising an organic polyisocyanate and at least one organic compound containing isocyanate-reactive hydrogens in the presence of a catalyst and an internal mold release agent in a closed mold. The internal mold release agent is a compound corresponding to the formula: ##STR1## wherein R.sup.2 represents hydrogen, the group R.sup.5 --NH--CO--, or a C.sub.1 to C.sub.24 alkyl or substituted alkyl group, a C.sub.3 to C.sub.24 cycloalkyl or substituted cycloalkyl group, a C.sub.2 to C.sub.24 alkenyl or substituted alkenyl group, or a C.sub.6 to C.sub.24 aryl or substituted aryl group, and

Process for the production of molded products using internal mold

A thermoplastic copolycarbonate resin having improved low temperature impact strength and a process for the preparation of the resin are disclosed. Accordingly the structure of the copolycarbonate contains

Copolycarbonate having improved low-temperature impact strength

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Coraopolis, PA, United States of America

Erik H Jonsson