Synergistic mixture consisting of a 2,4-dimethyl-6-S-alkylphenol

Details Synergistic mixture consisting of a 2,4-dimethyl-6-S-alkylphenol Synergistic mixture consisting of a 2,4-dimethyl-6-S-alkylphenol

1997-01-29

1998-06-30

Morgan, Kriellion S.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252403, 2524002, C09K 1508, C09K 1522, C09K 1532

Patent

active

057729212

ABSTRACT:
The present invention relates to synergistic mixtures of at least one 2,4-dimethyl-6-s-alkyl phenol and at least one selected sterically hindered phenol according to formula II ##STR1## The variable "n" is 1, 2 or 4. X.sub.1 is tert-butyl. X.sub.2 is C.sub.1 -C.sub.4 alkyl. X.sub.3, when n is 1, is C.sub.1 -C.sub.20 alkyl, a triazinylamino group, or a --A.sub.1 --COO--A.sub.2 or --A.sub.1 --CONH--A.sub.2 group. X.sub.3, when n is 2, is a --E.sub.1 --COO--E.sub.2 --OOC--E.sub.3 -- or --E.sub.1 --CONH--E.sub.2 --NHCO--E.sub.3 -- group. synergistic mixtures can be used to stabilize selected organic polymers against thermal, oxidative and/or actinic degradation.

REFERENCES:
patent: 3511802 (1970-05-01), Newland et al.
patent: 3644482 (1972-02-01), Dexter et al.
patent: 3681417 (1972-08-01), Simons
patent: 3944594 (1976-03-01), Kleiner et al.
patent: 4009227 (1977-02-01), Ott et al.
patent: 5086173 (1992-02-01), Tritschler et al.
patent: 5098945 (1992-03-01), Pitteloud et al.
Chemical Abstract--72:11860t.
Rubber Chemistry and Technology 47 (1974), No. 4, pp. 988 & 989.
Chemical Abstract--69:10147s.
G. Scott, Atmospheric Oxidation and Antioxidants (1965), pp. 120-125.

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