Process for polymerizing a thiobisphenol

Details Process for polymerizing a thiobisphenol Process for polymerizing a thiobisphenol

1978-06-23

1979-10-09

Schain, Howard E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

260 4595C, 260609F, C07C14800, C07C14804

Patent

active

041707028

ABSTRACT:
Low molecular weight polymers of 4,4'-thiobis(6-t-butyl-m-cresol) are prepared by contact with molecular oxygen in the presence of a copper salt complexed with amine. The polymer is useful as an antioxidant, e.g. for polyolefins.

REFERENCES:
patent: 3133899 (1964-05-01), Kwiatek et al.
patent: 3306874 (1967-02-01), Hay
patent: 3306875 (1967-02-01), Hay
patent: 3707565 (1972-12-01), Hofer
patent: 3749693 (1973-07-01), Cooper
patent: 3986981 (1976-10-01), Lyons
patent: 4097534 (1978-06-01), Hirsch

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