Bicomponent filaments with a special cross-section

Details Bicomponent filaments with a special cross-section Bicomponent filaments with a special cross-section

1976-07-21

1978-09-26

Kendell, Lorraine T.

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

264171, 428370, 428371, 428397, D02G 300

Patent

active

041171942

ABSTRACT:
Side-by-side bicomponent polyester filaments, and process for making same, are disclosed, wherein the filaments are of polyethylene terephthalate and polybutylene terephthalate, with the polybutylene terephthalate being sparingly cross-linked by at least about 0.20 mole per cent of cross-linking agent. The sparingly cross-linked polybutylene terephthalate has a melted state viscosity VF of at least about 2000 poises at 260.degree. C. The polyethylene terephthalate partly envelopes the sparingly cross-linked polybutylene terephthalate, in cross-section, so as to cover at least about 45% of the periphery of the sparingly cross-linked polybutylene terephthalate.

REFERENCES:
patent: 3671379 (1972-06-01), Evans et al.
patent: 3718534 (1973-02-01), Okamoto et al.
patent: 3973073 (1976-08-01), Barbe et al.

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