Vulcanizable rubber compositions comprising organic derivatives

Details Vulcanizable rubber compositions comprising organic derivatives Vulcanizable rubber compositions comprising organic derivatives

1975-03-10

1976-10-12

Griffin, Ronald W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 237M, 260 237R, 260 795P, 260453R, 260780, C08C 1920, C08K 524, C08K 530

Patent

active

039857174

ABSTRACT:
Hydrazides of sulphenic acids are inhibitors of premature vulcanization of sulphur curable rubbers. The hydrazides are prepared from sulphenyl chlorides or bromides and the appropriate hydrazine in presence of an acid binding agent. The most effective hydrazides are those from secondary alkyl sulphenyl chlorides or bromides, or those in which the nitrogen atom attached to the sulphenic acid group also carries an acyl group, or in which the other nitrogen atom is attached to an alkylidene or cycloalkylidene group.

REFERENCES:
patent: 2762740 (1956-09-01), Margot et al.
patent: 3178447 (1965-04-01), Kohn
patent: 3344153 (1967-09-01), Kuhle et al.
patent: 3579460 (1971-05-01), Kerwood
patent: 3678017 (1972-07-01), Shelton et al.
patent: 3703500 (1972-11-01), Nast et al.
patent: 3705135 (1972-12-01), Wolfinger
patent: 3839303 (1974-10-01), D'Amico

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