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Stabilizers for synthetic polymers comprising 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester, .beta.-thioalkyl propionic acid ester and phenol

  • US 4,219,463 A
  • Filed: 11/17/1977
  • Issued: 08/26/1980
  • Est. Priority Date: 12/10/1976
  • Status: Expired due to Term
First Claim
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1. A stabilizer composition for organic polymeric materials comprising:

  • (a) aβ

    -thioalkyl propionic acid ester of a polyhydric alcohol in an amount of from about 10 to about 35 parts by weight;

    (b) a phenolic antioxidant in an amount of from about 10 to about 35 parts by weight; and

    (c) a 2,2,6,6-tetramethyl-4-piperidyl carboxylic acid ester in an amount from about 90 to about 35 parts by weight and having the general formula;

    ##STR150## wherein;

    R1 is selected from the group consisting of ##STR151## Y is selected from the group consisting of hydrogen and O;

    R6 is lower alkyl having from one to two carbon atoms;

    n is selected from the group consisting of 1, 2, 3 and 4; and

    Z is an organic radical having a valence from 1 to 4, the valence positions being taken by ##STR152## groups, and from one to about twenty carbon atoms, and selected from the group consisting of alkyl, alkenyl, alkylene, alkenylene, alkylidene;

    aryl, arylene, aralkyl, aralkylene, aralkylidene, alkaryl, alkarylene alkarylidene;

    tris (N,N'"'"',N"-alkylene) cyanuric acid;

    bis (N,N'"'"'-alkylene) piperazine;

    cycloalkyl, cycloalkenyl, cycloalkylene, cycloalkenylene, cycloalkylidene, alkcycloalkyl, alkcycycloalkenyl, alkcycloalkenylene, alkcycloalkylene, cycloalkalkyl, cycloalkalkylene, cycloalkalkenyl, cycloalkalkenylene, aminoalkylene, nitriloalkylene, hydroxyalkylene and alkylhydroxyphenalkylene.

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