Autosynergistic phenolic antioxidant reaction product

Details Autosynergistic phenolic antioxidant reaction product Autosynergistic phenolic antioxidant reaction product

1987-03-09

1987-11-17

Thexton, Matthew A.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

524330, 524331, 524333, C09K 1514, C08K 513

Patent

active

047073004

ABSTRACT:
This invention is concerned with the stabilization of oxidizable organic materials such as rubbers, oils, plastics and the like through the addition of an autosynergistic phenolic antioxidant reaction product to the oxidizable organic material. More specifically, this invention is directed to a definitive process for the preparation of an alkylated phenol/formaldehyde/mercaptan reaction product comprising the simultaneous acid catalyzed reaction of specific reactants at specific molar ratios under azeotroping conditions and the use of the reaction product in oxidizable organic materials.

REFERENCES:
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patent: 3260758 (1966-07-01), O'Shea et al.
patent: 3346648 (1967-10-01), Worrel
patent: 3462392 (1969-08-01), Kaplan
patent: 3553270 (1971-01-01), Wollensak et al.
patent: 3903173 (1975-09-01), Eggensperger et al.
patent: 4304940 (1981-12-01), Wedemeyer et al.
patent: 4358616 (1982-11-01), Wedemeyer et al.

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