Organic thiosulphates and thiosulphonates useful as stabilizing

Details Organic thiosulphates and thiosulphonates useful as stabilizing Organic thiosulphates and thiosulphonates useful as stabilizing

1983-08-25

1985-05-28

Welsh, Maurice J.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524158, 524161, 524162, 524166, C08L 900

Patent

active

045201544

ABSTRACT:
Additives for rubber compositions, giving vulcanizates having improved retention of optimum physical properties, are compounds containing two or more groups of the formula --S--SO.sub.2 R linked by an organic bridging group, or polymers containing two or more groups of the formula --S--SO.sub.2 R attached to an organic polymer chain, where R represents (a) a radical OM where M is a monovalent metal, the equivalent of a multivalent metal, a monovalent ion derived by the addition of a proton to a nitrogenous base, or the equivalent of a multivalent ion derived by the addition of two or more protons to a nitrogenous base, or (b) an organic radical selected from aliphatic, cycloaliphatic, aromatic and heterocyclic radicals, and radicals which are combinations of any two or more such radicals.

REFERENCES:
patent: 2936295 (1960-05-01), Brodkey et al.
patent: 3036034 (1962-05-01), Rumscheidt
patent: 3535249 (1970-10-01), Larson
patent: 3732192 (1973-05-01), Arnold
patent: 3869435 (1975-03-01), Trivette
Weingarten, F. W., "Taurin-Homologue and Polymethylenedithioschwefelsaure Salze" Arzneimittel Forschung, (1954), 4, 344-346.
Milligan and Swan, "Cyclic Trisulphides from Bunte Salts" J. Chem. Soc. (1965), 2901-2904.
El Hewehi, Z. & Taeger, E., "Notiz uber Bunte-Salze" Journal fur Praktische Chemie, 4 Reihe, Band 7, (1958).

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