Polysulphide rubbers

Details Polysulphide rubbers Polysulphide rubbers

1976-03-17

1978-01-10

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 318Z, 260 338R, 260 37R, 260 79, 260 791, C08K 510

Patent

active

040678423

ABSTRACT:
A catalyst composition, suitable for the ambient temperature curing of polysulphide rubbers, comprises zinc carbonate, an organic sulphur-containing accelerator containing a disulphide linkage (e.g. a thiazole, thiuram or dithiocarbamate), and a sulphur/amine complex. The composition contains from 15 to 90% by weight, based on the weight of zinc carbonate, of the organic accelerator and the sulphur/amine complex is preferably a sulphur/dialkylamine complex, the weight ratio of sulphur to amine in the sulphur/amine complex preferably being from 20 : 1 to 5 : 1 and the sulphur/amine complex being present in the composition in an amount of from 0.2 to 8% by weight, based on the weight of zinc carbonate.

REFERENCES:
patent: 3046248 (1962-07-01), Molnar
patent: 3362927 (1968-01-01), Lochridge
patent: 3455854 (1969-07-01), Deltieure
patent: 3637574 (1972-01-01), Millen
patent: 3637612 (1972-01-01), Bertozzi
patent: 3923754 (1975-12-01), Pellico

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