Process for disperse dyeing dry-spun atactic polyvinyl chloride-

Details Process for disperse dyeing dry-spun atactic polyvinyl chloride- Process for disperse dyeing dry-spun atactic polyvinyl chloride-

1986-03-11

1987-07-21

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Drawing or stretching of preform with dyeing, process or...

8494, 8504, 8508, 8538, 8928, D06B 304, D06P 116

Patent

active

046815945

ABSTRACT:
The invention relates to a process for continuous dyeing of filaments based on atactic polyvinyl chloride in the course of their production.
The undrawn filaments are impregnated with a composition containing at least one plastosoluble dye while they have a density of between 1.3 and 1.4 g/cm.sup.3, are fixed continuously in the presence of steam under pressure at a temperature of between 100.degree. and 120.degree. C. for 2 to 20 seconds, are drawn in a known manner, are then fixed under tension in the presence of steam under pressure at a temperature of between 100.degree. and 130.degree. C. for 1 to 20 seconds, and are then oiled and shrunk in a known manner.
Such a process permits quick dyeing, on an industrial scale, with good color fastness.

REFERENCES:
patent: 3533729 (1970-10-01), Mazzolini et al.
patent: 4591361 (1986-05-01), Cazzard et al.

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