Polyamide filaments with a basic-dyeable sheath and an acid-dyea

Details Polyamide filaments with a basic-dyeable sheath and an acid-dyea Polyamide filaments with a basic-dyeable sheath and an acid-dyea

1975-09-12

1978-02-21

McCamish, Marion E.

Stock material or miscellaneous articles

Pile or nap type surface or component

Composition of pile or adhesive

8 1N, 8 1XB, 8 15, 8 25, 8178R, 8178A, 428225, 428369, 428373, 428374, B32B 302, B32B 3300

Patent

active

040753786

ABSTRACT:
A synthetic polyamide filament is composed of an acid-dyeable polyamide core surrounded by a basic-dyeable polyamide sheath containing aromatic sulfonate groups. At a normal dyeing pH of 4-7 the core accepts leveling acid dyes but not reserving acid or basic dyes. The sheath accepts leveling and nonleveling basic dyes. Versatility in cross-dye styling when such filaments are combined with acid-dyeable and basic-dyeable monocomponent filaments is demonstrated.

REFERENCES:
patent: 2989798 (1961-06-01), Bannerman
patent: 3843609 (1974-10-01), Kimura
Publication of Japanese Patent Application No. 47-21613/1972, June 17, 1972.

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