Hindered amine light stabilizer hydrazides

Details Hindered amine light stabilizer hydrazides Hindered amine light stabilizer hydrazides

1990-07-17

1992-05-26

Bond, Robert T.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

524 99, 524102, 524103, C07D21158, C08K 53435

Patent

active

051169762

ABSTRACT:
New and novel carboxylic acid hydrazides bearing a 2,2,6,6-tetra-alkyl-4-piperidine ring and new and novel polymeric compositions stabilized therewith are provided. The novel compounds which contain a light stabilizing group and a reactive hydrazide functionality in the same molecule are prepared by hydrazinolysis of the ester group of an intermediate carboxylic acid ester which contains the 2,2,6,6-tetralkylpiperidine moiety.

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