Reactive hindered amine light stabilizers

Details Reactive hindered amine light stabilizers Reactive hindered amine light stabilizers

C - Chemistry, Metallurgy

07

D

260/278.1, 260/2

C07D 211/58 (2006.01) C07D 211/94 (2006.01) C07D 405/06 (2006.01) C08K 5/3435 (2006.01)

Patent

CA 1309099

Abstract of the Disclosure 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 followed by hydrazinolysis of the ester group of the intermediate mono ester-amide. The compounds are useful for introducing permanent heat and light stability to coreactive polymers or copolymers.

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