Stabilized copolyetheresters
thermoplastic copolyetherester elastomers improved by incorporating into the copolyetherester effective concentrations of N,N'-hexamethylenebis(3,5-di-tert-butyl-4-hydroxyhydrocinnamamide) and N,N'-trimethylenebis(3,5-di-tert-butyl-4-hydroxyhydrocinnamamide) to yield non-discoloring compositions having outstanding heat stability and little or no tendency to bloom.
Latest E. I. Du Pont de Nemours and Company Patents:
Description
Patent History
Patent number: T982003
Type: Grant
Filed: Jul 28, 1978
Date of Patent: May 1, 1979
Assignee: E. I. Du Pont de Nemours and Company (WILMINGTON, DE)
Inventor: Guenther K. Hoeschele (Wilmington, DE)
Application Number: 5/928,910
Type: Grant
Filed: Jul 28, 1978
Date of Patent: May 1, 1979
Assignee: E. I. Du Pont de Nemours and Company (WILMINGTON, DE)
Inventor: Guenther K. Hoeschele (Wilmington, DE)
Application Number: 5/928,910
Classifications
Current U.S. Class:
260/459NC
International Classification: C08K 520;
International Classification: C08K 520;
