Process for the preparation of thermoplastic fibres

Details Process for the preparation of thermoplastic fibres Process for the preparation of thermoplastic fibres

D - Textiles, Paper

01

F

18/612, 400/6555

D01F 6/96 (2006.01) C08G 67/02 (2006.01) C08J 5/04 (2006.01) D01F 6/30 (2006.01)

Patent

CA 1332642

A B S T R A C T PROCESS FOR THE PREPARATION OF THERMOPLASTIC FIBRES A process for the preparation of thermoplastic fibres which comprises: a) spinning a solution of an alternating copolymer of an olefinically unsaturated compound and carbon monoxide, having a number average molecular weight of at least 5000, to fibres through a spinning aperture, said solution having a polymer content in the range of from 0.1 - 50 %m, b) submitting the thus obtained fibres to a solvent-removal treatment to remove substantially all the solvent, and c) stretching the thus obtained substantially solvent-free fibres in an environment having a temperature between the glass-transition temperature of said polymer and (T+20)°C, wherein T is the crystalline melting point of the polymer.

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