Organic thiosulphates and thiosulphonates useful as stabilising

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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2605005R, 260769, 260779R, 260780, 260799, 524 94, 524 95, 524 99, 524102, 524104, 524157, 524159, 524162, 524166, 544 4, 544 64, 544107, 546 2, 546 14, 546152, 546186, C08K 547, C08K 541

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active

044170122

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 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:
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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 Polymethylen-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 Chemil, 4 Reihe, Band 7, 1958.

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