Substituted dibenzo¬d,g|¬1,3,2|dioxaphosphocins

Details Substituted dibenzo¬d,g|¬1,3,2|dioxaphosphocins Substituted dibenzo¬d,g|¬1,3,2|dioxaphosphocins

C - Chemistry, Metallurgy

07

F

C07F 9/6574 (2006.01) C07F 9/6571 (2006.01) C08K 5/52 (2006.01) C08K 5/5393 (2006.01) C08L 93/00 (2006.01) C08L 101/00 (2006.01)

Patent

CA 2058156

A-18483/A Substituted dibenzo[d,g][1,3,2]dioxaphosphocins Abstract of the Disclosure There are disclosed novel substituted dibenzo[d,g][1,3,2]dioxaphosphocins of formula I Image wherein R1 and R2 are each independently of the other C1-18alkyl, C2-12cycloalkyl, phenyl or C1-4alkyl -substituted phenyl or phenyl-C1-4alkyl, R3 is hydrogen or methyl, n is 1 or 2, and A, when n = 1, is C1-30alkyl, C5-12cycloalkyl, phenyl-C1-4alkyl or C2-18alkyl which is interrupted by -NR-, -S- or -O-, and, when n = 2, is a direct bond, C1-12alkylene or C2-12alkylene which is interrupted by -NR-, -S- or -O-, and R is C1-12alkyl or phenyl. These novel compounds are suitable for stabilising organic material, especially synthetic polymers, and are particularly suitable for use as processing stabilisers (heat stabilisers) for polyolefins.

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