Substituted hydroxylamine ester stabilizers

Details Substituted hydroxylamine ester stabilizers Substituted hydroxylamine ester stabilizers

1989-10-12

1991-06-04

Hoke, Veronica P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524 99, 524100, 524104, 524106, 524236, 524240, 524248, 524280, C08K 532, C08K 538, C08K 5357, C08K 53477, C08K 53435, C08K 53432

Patent

active

050214799

ABSTRACT:
Substituted hydroxylamine ester stabilizers corresponding to the formula ##STR1## wherein n is 0-2, X is a direct bond, --S-- or --CH.sub.2 S--, R.sub.1 and R.sub.2 are independently hydrogen, alkyl, cycloalkyl, aralkyl, R.sub.3 and R.sub.4 are independently alkyl, cycloalkyl or aralkyl, and R.sub.5 is hydrogen or the group ##STR2## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation.

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patent: 4929657 (1990-05-01), Ravichendran et al.
CA 53 15034d (1959).
J. Liebig's Ann. de Chemie 606, 47-55 (1957).
Chem. Ber. 109, 1106-1112 (1976).

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