Tris-organophosphite compositions having improved hydrolytic...

Details Tris-organophosphite compositions having improved hydrolytic... Tris-organophosphite compositions having improved hydrolytic...

C - Chemistry, Metallurgy

08

K

31/76, 31/79, 40

C08K 5/00 (2006.01) C07F 9/02 (2006.01) C08K 5/17 (2006.01) C08K 5/524 (2006.01) C08L 23/02 (2006.01) C08L 25/04 (2006.01) C08L 27/06 (2006.01)

Patent

CA 1275530

TRIS-ORGANOPHOSPHITE COMPOSITIONS HAVING IMPROVED HYDROLYTIC STABILITY ABSTRACT OF THE DISCLOSURE Tris-organophosphite compositions are provided having an improved hydrolytic stability, comprising (1) a tris-organophosphite of the formula: Image I wherein: R1, R2 and R3 are selected from the group consisting of alkyl, alkenyl, aryl, alkylaryl and aralkyl groups together aggregating at least fourteen carbon atoms up to about sixty carbon atoms; and (2) a long-chain aliphatic amine in an amount to improve the hydrolytic stability of the phosphite and having the formula: Image II wherein: R4, R5, and R6 are selected from the group consisting of hydrogen; aliphatic (including alkyl and alkenyl) groups having from one to about thirty-six carbon atoms; and hydroxyalkyl having from two to about six carbon atoms; one of R4, R5 and R6 is an aliphatic group having at least ten carbon atoms, and the remaining of R4, R5 and R6 are selected from hydrogen, alkyl having from one to four carbon atoms and hydroxyalkyl; and preferably at least one of R4, R5 and R6 is hydroxyalkyl. These compositions are useful as stabilizers for polyvinyl chloride resins, and as heat stabilizers for olefin polymers.

485875

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