4,4'-Bipiperidylidene derivatives and their use as stabilizers

Details 4,4'-Bipiperidylidene derivatives and their use as stabilizers 4,4'-Bipiperidylidene derivatives and their use as stabilizers

1976-07-30

1977-10-25

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

26029363, 26029364, C07D40104, C08J 320

Patent

active

040555364

ABSTRACT:
New 2,2',6,6'-tetraalkyl-2,2',6,6'-tetramethyl-4,4'-bipiperidylidene derivatives, which are optionally substituted in the 1,1',3,3',5, and 5' positions are useful as stabilizers of organic substrates, particularly synthetic polymers, against photo- and thermal-deterioration. They may be prepared by condensing a corresponding 2,6-dialkyl-2,6-dimethyl-4-piperidone and then optionally introducing the desired substituents at the 1- and 1'-positions in the resulting bipiperidylidene derivative.

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