Polyalkylpiperidine derivatives of cyclic phosphites

Details Polyalkylpiperidine derivatives of cyclic phosphites Polyalkylpiperidine derivatives of cyclic phosphites

C - Chemistry, Metallurgy

07

F

260/291, 400/706

C07F 9/58 (2006.01) C07F 9/6571 (2006.01) C08K 5/527 (2006.01) C08K 5/5399 (2006.01)

Patent

CA 1291997

Abstract Compounds of the formula I or II, Image I Image II wherein m is 1 or 2, A is branched or unbranched 1,2- or 1,3-alkylene, or o-phenylene, B is a group III or IIIa, R is hydrogen or methyl, R1 and R3 are hydrogen, alkyl, alkenyl, aralkyl, alkanoyl, alkenoyl, benzoyl or cyanomethyl, R2 is a radical of valency m and R4 is a monovalent radical, are effective processing stabilizers for polymers, in particular for polyolefins, and additionally have a stabilizing action against damage by light.

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