Process for improving the dyeability of nylon carpet fiber

Details Process for improving the dyeability of nylon carpet fiber Process for improving the dyeability of nylon carpet fiber

1984-04-12

1985-12-17

Czaja, Donald

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

With crimping or crinkling of strands of filaments

264171, 264176F, 2642105, 264345, D01D 522

Patent

active

045591962

ABSTRACT:
The dyeability of carpet yarns prepared from random copolymers of nylon 66 and 6-12 wt. % nylon 6 is improved by subjecting the yarn to saturated steam at temperatures close to the melting point of the copolymer. The copolymers used in the invention have an amine end content of 30-80 gram equivalents per 1000 kilograms of polymer and a relative viscosity of 55-85 in filament form.

REFERENCES:
patent: 3003222 (1961-10-01), Pitzl
patent: 3322731 (1967-05-01), Cook et al.
patent: 3511815 (1970-05-01), Sayin
patent: 3536802 (1970-10-01), Uraya et al.
patent: 3557544 (1971-01-01), Simons
patent: 3707522 (1972-12-01), Simons

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