Biphosphites

Details Biphosphites Biphosphites

C - Chemistry, Metallurgy

07

F

C07F 9/6574 (2006.01) C08K 5/527 (2006.01) C08K 5/53 (2006.01) C08L 101/00 (2006.01) C09K 15/32 (2006.01) C10M 137/02 (2006.01)

Patent

CA 2068682

A-18646/A/CGM 383 Biphosphites Abstract of the Disclosure Biphosphites of formula I Image (I), wherein m is 0, 1 or 2, n is 1 to 4 or 6, R1 is hydrogen or C1-C4alkyl and, if m = 2, the radicals R1 are identical or different, and A is the radical of an at least n-hydric alcohol or phenol, which radical is attached to the P atom or atoms through the alcoholic or phenolic O atoms or atoms, obtainable by reacting a compound of formula II Image (II), wherein m is 0, 1 or 2, R1 is hydrogen or C1-C4alkyl and, if m = 2, the radicals R1 are identical or different and R2' is phenyl, C1-C12alkylphenyl or C1-C4alkyl, with a polyether polyol or polyether/ester polyol, the hydroxy functions of said polyether polyol or polyether/ester polyol being partially or completely esterified with the radical Image , are suitable for use as stabilisers, especially processing stabilisers, for organic polymers, preferably PVC resins, high density polyethylene and propylene.

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