2,2,6,6-Tetramethyl-4-piperidyl carboxylic acid esters of hydrox

Details 2,2,6,6-Tetramethyl-4-piperidyl carboxylic acid esters of hydrox 2,2,6,6-Tetramethyl-4-piperidyl carboxylic acid esters of hydrox

1977-02-22

1978-08-08

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

26029357, 26029363, C08K 534, C07D21106

Patent

active

041056256

ABSTRACT:
2,2,6,6-TETRAMETHYL-4-PIPERIDYL CARBOXYLIC ACID ESTERS OF ALIPHATIC DI- OR TRI- CARBOXYLIC ACIDS ARE PROVIDED, USEFUL AS LIGHT STABILIZERS FOR ORGANIC POLYMERIC MATERIALS, AND HAVING THE GENERAL FORMULA: ##STR1## wherein: R.sub.1 is selected from the group consisting of ##STR2## R.sub.2 is CH.sub.3 or C.sub.2 H.sub.5 ; a is selected from the group consisting of 2 and 3;

REFERENCES:
patent: 3899464 (1975-08-01), Murayama et al.
patent: 4021432 (1977-05-01), Holt et al.

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