Removal of oligomer deposits from textile materials

Details Removal of oligomer deposits from textile materials Removal of oligomer deposits from textile materials

1980-05-22

1981-10-13

Schofer, Joseph L.

Bleaching and dyeing; fluid treatment and chemical modification

Cleaning or laundering

Removing formation impurities from artifical fiber

8137, 8606, 252547, D06L 112, D06P 502, C11D 162

Patent

active

042945763

ABSTRACT:
A process for removing oligomer deposits from dyed and non-dyed textile materials which consist of polyester fibers or of blends of these fibers with other fibers, and from dyeing machinery, by a treatment with an aqueous, alkaline liquor which contains from 0.1 to 10 g/l of a quaternary ammonium compound carrying not less than two C.sub.6 -C.sub.22 -alkyl or -alkenyl groups on the quaternary nitrogen, at up to 100.degree. C. The oligomers are hydrolyzed and are removed together with the treatment liquor.

REFERENCES:
patent: 2587597 (1952-03-01), Cook et al.
patent: 2950253 (1960-08-01), Kling
patent: 3684431 (1972-08-01), Bischof et al.
patent: 3816321 (1974-06-01), Kleinschmidt
patent: 4152272 (1979-05-01), Young
patent: 4155856 (1979-05-01), Reinert et al.

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