Derivatives of 4-aminopiperidine as stabilizers for polymers

Details Derivatives of 4-aminopiperidine as stabilizers for polymers Derivatives of 4-aminopiperidine as stabilizers for polymers

1977-11-21

1980-03-04

Cockeram, H. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106124, 106176, 252403, 542417, 544130, 544198, 544209, 544212, 546189, 546190, 546223, 546224, C08K 534, C07D21156, C07D21192

Patent

active

041916832

ABSTRACT:
Derivatives of sterically hindered 4-aminopiperidines are effective as light-stabilizers for organic polymers, especially for polyolefins. The piperidine ring is substituted with at least five alkyl groups, preferably methyl and ethyl groups. The 4-amino group is substituted with mono- or divalent acyl groups. The nitrogen in 1-position may also be substituted with a monovalent organic substituent. The compounds can be synthesized starting from higher homologs of acetone in sequence of several reaction steps.

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