Reactive hindered amine light stabilizers

Details Reactive hindered amine light stabilizers Reactive hindered amine light stabilizers

1989-02-13

1991-01-08

Bond, Robert T.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546187, 546189, 546190, 546191, 546207, 546224, 546244, 546245, 524 99, 524102, C07D21158, C07D40112

Patent

active

049837389

ABSTRACT:
N-(2,2,6,6-tetraalkyl-4-piperidinyl)amide-hydrazides of dicarboxylic acids contain a light stabilizing group, a heat stabilizing group, and a reactive hydrazide functionality in the same molecule. The reactive stabilizers are prepared by reacting 4-amino-2,2,6,6-tetraalkylpiperidines with diesters (or mono ester acid chlorides) of dicarboxylic acids or dialkyl itaconates followed by hydrazinolysis of the ester group of the intermediate mono esteramide. The compounds are useful for introducing permanent heat and light stability to coreactive polymers or copolymers. They are also useful in the stabilization of inert polymeric systems against the degradative effects of heat and light when merely mixed with, rather than reacted with, the polymers for which stabilization is sought.

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"Anionic Polymerization to Cationic Polymerization," Encyclopedia of Polymer Science and Engineering, vol. 2, pp. 83, 84 (John Wiley & Sons).
Wilson B. Lutz et al., "New Derivatives of 2,2,6,6-Tetramethylpiperidine," pp. 1695-1703 (May 1962).

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