Method of making a softener for rubber mixtures and a...

Details Method of making a softener for rubber mixtures and a... Method of making a softener for rubber mixtures and a...

C - Chemistry, Metallurgy

10

G

196/2

C10G 1/10 (2006.01)

Patent

CA 1166589

ABSTRACT OF THE DISCLOSURE A method of making a softener for rubber mixtures and furnace fuel oil comprises the steps of heating a hydrocar- bonaceous solvent and adding thereto waste from vulcanized and nonvulcanized rubbers under intensive stirring. Then the waste is thermally decomposed at a pressure of 5-102 to 25-105 n/m2, the hydrocarbonaceous solvent continuously circulating through the reaction mixture. The end product is separated from the formed suspension by distillation at a temperature of 200 to 560°C and at a pressure of 10 to 2-105 n/m2 in the presence of an inert gaseous agent. The method of the present invention makes it possible to practically eliminate coking of the raw material in the course of the thermal de- composition and to upgrade the quality of the end product, as well as to improve its characteristics and the properties of rubber mixtures of vulcanizates.

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