9-aza-8,8,10,10-tetramethyl-1,5-dioxa-spiro-(5.5)-undecane...

C - Chemistry – Metallurgy – 07 – D

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400/7077, 260/27

C07D 491/10 (2006.01) C08K 5/3435 (2006.01) C08K 5/35 (2006.01)

Patent

CA 1041514

ABSTRACT Novel piperidine derivatives of formula: Image (I) (wherein from 2 to 4 of R1, R2, R3, R4 and R5 represent alkyl groups having from 1 to 4 carbon atoms and the remainder of R1, R2, R3, R4 and R5 are hydrogen atoms, and R6 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, a substituted alkyl group, an aliphatic acyl group, an alkoxycarbonyl group or an aralkoxycarbonyl group) are useful as stabilizers for synthetic polymers

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