Title: Process for preparation of polytetramethylene apipamide
Application Number: 85103119 Application Date: 1985.04.29
Publication Number: 1004468 Publication Date: 1986.10.29
Approval Pub. Date: Granted Pub. Date: 1989.11.29
International Classifi-cation: C08G69/28
Applicant(s) Name: Stamicarbon B.V. Address:
Inventor(s) Name: Antonius Jozef Peter Bongers
Attorney & Agent: LUO HONG LIU YUANJIN
Abstract:
     Process for the preparation of polytramethylene 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 2 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.
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