Organic thiosulphates and thiosulphonates useful as stabilizing

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

1985-04-11

1986-05-06

Welsh, Maurice J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525403, 544109, 546165, 546182, 546186, 546191, 548565, 560308, 560309, C08F 800

Patent

active

045872961

ABSTRACT:
Additives for rubber compositions, giving vulcanisates 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 in 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:
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patent: 3153077 (1964-10-01), Tesoro
patent: 3506676 (1970-04-01), Tesoro et al.
patent: 3535249 (1970-10-01), Larson
patent: 3732192 (1973-05-01), Arnold
Weingarten, F. W., "Taurin-Homologue and _Polymethylene-dithioschwefelsaure Salze" Arzneimittel _Forschung (1954) 4, 344-6.
Milligan and Swan, "Cyclic Trisulphides from Bunte Salts" J. Chem. Soc. (1965), 2901-4.
El Hewehi, Z. & Taeger, E., "Notiz uber Bunte-Salze" Journal fur Praktische Chemie, 4 Reihe, Band 7, (1958).
Extract De Brevet Russe (Derwent), 177881, 1966.

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