Process for the preparation of polytetramethylene adipamide

Details Process for the preparation of polytetramethylene adipamide Process for the preparation of polytetramethylene adipamide

C - Chemistry, Metallurgy

08

G

402/243

C08G 69/26 (2006.01) C08G 69/28 (2006.01)

Patent

CA 1226995

A B S T R A C T Process for the preparation of polytetramethylene adipamide in which a prepolymer-containing liquid reaction mixture is prepared by heating the salt of 1,4 diaminobutane and adipic acid in a first reaction zone at a pressure between 5 and 100 bars and in which the temperature of the prepolymer - containing liquid reaction mixture is maintained above its solidification temperature in a second reaction zone while the pressure is simultaneously reduced. The process enables the preparation of polytetramethylene adipamide in a continuous operation.

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