Substituted 1-hydroxy-2,6-diaryl-4-piperidone ketals and polymer

Details Substituted 1-hydroxy-2,6-diaryl-4-piperidone ketals and polymer Substituted 1-hydroxy-2,6-diaryl-4-piperidone ketals and polymer

1992-04-22

1993-08-10

Cintins, Marianne M.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546242, 546207, 524 99, C07D21122

Patent

active

052350568

ABSTRACT:
1-Hydroxy-2,6-diaryl-4-piperidone ketal derivatives, such as the compound of formula I ##STR1## wherein Ar.sub.1 and Ar.sub.2 are each phenyl, R.sub.1 to R.sub.6 are all hydrogen, X.sub.1 and X.sub.2 are each --O-- and T is a direct bond, are novel compounds and are effective process stabilizers, such as polypropylene, for polymers processed at elevated tempertures providing both good melt flow stabilization and good resistance against discoloration during said processing.

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