Preparation of polytetramethylene adipamide

Details Preparation of polytetramethylene adipamide Preparation of polytetramethylene adipamide

C - Chemistry, Metallurgy

08

G

402/243

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

Patent

CA 1165942

-21- ABSTRACT OF THE DISCLOSURE A process for the preparation of white nylon 4,6 polyamide of high molecular weight from a tetramethylenediamine adipic acid prepolymer, formed under controlled conditions of temperature and water vapor pressure and wherein the plurality of cyclical end-groups in the prepolymer does not exceed 0.20 mg. equivalent per gram of prepolymer.

373843

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