N,N'-hydrocarbylenebis[N-hals-substituted amic acid hydrazides]

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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524 89, 524 94, 546187, 546190, C08K 53435, C07D21130

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active

050433725

ABSTRACT:
N,N'-hydrocarbylenebis[N-(2,2,6,6-tetraalkyl-4-piperidinyl)amic acid hydrazides] and their derivatives are useful for stabilizing polymeric systems which are subject to degradation and/or discoloration upon exposure to heat and/or light. The novel compounds contain at least two hindered amine light stabilizing groups and two hydrazide or hydrazide derivative thermal oxidative stabilizing groups.
The novel compounds are excellent light stabilizers for polyolefins, have low volatility and are not readily lost from polymeric systems via volatilization, migration or extraction.

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patent: 4857595 (1989-08-01), Kazmierczak et al.
patent: 4857596 (1989-08-01), MacLeay et al.
Encyclopedia of Polymer Science and Engineering, 2nd Ed., vol. 2, pp. 83-84, Chemical Abstracts, 97:217369g (1982).

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