Piperidinyl phthalimide hindered amine light stabilizers

Details Piperidinyl phthalimide hindered amine light stabilizers Piperidinyl phthalimide hindered amine light stabilizers

1989-03-01

1993-08-31

Lee, Mary C.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

544229, 544364, 546 14, 546187, 546200, C07D41314

Patent

active

052410676

ABSTRACT:
Hindered amine light stabilizers are provided in which the hindered amine is contained in a unit of formula ##STR1## and R.sup.1, R.sup.2, R.sup.3, and A are as defined as in the Summary of the Invention. Unique polymeric and non-polymeric compounds containing this unit are useful as additives for the stabilization of polymeric compositions which are normally subject to thermal, oxidative or actinic light degradation.

REFERENCES:
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patent: 4692486 (1987-09-01), Gugumus
Kirk-Othmer Encyclopedia of Chemical Technology, vol. 23, pp. 615-627 (1983).
Polymerization Mechanisms and Processes, vol. 18, pp. 720-744 (1981).

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