Dialkyl esters of polyalkyl 1, 5-dioxa-9-azaspiro-¬5,5|...

C - Chemistry – Metallurgy – 07 – D

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400/9023, 400/94

C07D 491/113 (2006.01) C07D 519/00 (2006.01) C08G 63/685 (2006.01) C08G 69/26 (2006.01) C08K 5/34 (2006.01) C08K 5/3435 (2006.01)

Patent

CA 1287056

ABSTRACT Oligomeric derivatives of the dialkyl esters of polyalkyl 1,5-dioxa-9-azaspiro-[5.5]undecane-3,3- dicarboxylic acid are useful light stabilizers for synthetic polymer resins such as polyolefins, and in particular, polypropylene.

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