Phenolic resin recovery process

Details Phenolic resin recovery process Phenolic resin recovery process

C - Chemistry, Metallurgy

08

J

403/8

C08J 11/16 (2006.01) C08J 11/00 (2006.01)

Patent

CA 1115449

PHENOLIC RESIN RECOVERY PROCESS ABSTRACT OF THE DISCLOSURE A method of recovering a resin material from an infusible phanolic plastic composition. The infusible phenolic plastic composition is ground to a powder and mixed with an alkali solution to produce a liquid mixture. The liquid mixture is heated to a temperature selected between 260-340°C and maintained at this temperature between 160 and 3 minutes causing the resin in the infusible phenolic plastic composition to dissolve in the alkali solution and produce a liquor. Thereafter the liquor is passed through a filter to remove any insoluble plastic composition therefrom. An acid solution when added to the filtered liquor causes a solid to precipitate from the liquor. The solid is separated from the liquor and washed in a water bath to remove any water soluble salts, phenols, and cresols from the recovered resin material.

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