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

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

1976-10-28

1979-01-23

Hoke, V. P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

546 19, 546188, 546189, 546242, C08K 534, C07D2116

Patent

active

041360818

ABSTRACT:
2,2,6,6-TETRAMETHYL-4-PIPERIDYL CARBOXYLIC ACID ESTERS OF ALIPHATIC TETRACARBOXYLIC ACIDS ARE PROVIDED, USEFUL AS STABILIZERS FOR ORGANIC POLYMERIC MATERIALS, AND HAVING THE GENERAL FORMULA: ##STR1## wherein: R.sub.1 is selected from the group consisting of ##STR2## and when a is 2, 3, or 4, the R.sub.1 groups can be the same or different; R.sub.2 is selected from the group consisting of hydrogen; alkyl; alkenyl; cycloalkyl; alkcycloalkyl; cycloalkalkyl; aryl; aralkyl; and alkaryl; and when b is 2 or 3, the R.sub.2 groups can be the same or different;

REFERENCES:
patent: 3640928 (1972-02-01), Murayama et al.
patent: 3840494 (1974-10-01), Murayama et al.
patent: 3899464 (1975-08-01), Murayama et al.
patent: 3960809 (1976-06-01), Ramey et al.
patent: 4021432 (1977-05-01), Holt

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