Yarns and fibers good properties, based on atactic polyvinyl chl

Details Yarns and fibers good properties, based on atactic polyvinyl chl Yarns and fibers good properties, based on atactic polyvinyl chl

1983-08-12

1985-04-02

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

428394, 2642108, 5263443, 5263442, B32B 2700, D02P 300, D01D 512

Patent

active

045087784

ABSTRACT:
The present invention relates to yarns and fibers based on atactic polyvinyl chloride. They possess a residual shrinkage in boiling water of less than 3%, a modulus of elasticity which is greater than or equal to 2 kN/mm.sup.2, an orientation index of the crystalline zones which is greater than or equal to 70%, an orientation index of the mesomorphic zones which is greater than or equal to 8%, and an orientation index of the amorphous zones which is greater than or equal to 5%. They are obtained by spinning and stretching in a known manner, then stabilization under tension at a temperature between 105.degree. and 130.degree. C., in the presence of steam under pressure, for 1 to 3 seconds, and then shrinkage in an aqueous fluid medium at a temperature between 98.degree. and 130.degree. C.

REFERENCES:
patent: 3380953 (1968-05-01), Fukushima
patent: 3444269 (1969-05-01), Beer
patent: 3673167 (1972-06-01), Ledoux et al.

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