Desizing of textiles consisting of or containing cellulose

Details Desizing of textiles consisting of or containing cellulose Desizing of textiles consisting of or containing cellulose

1979-03-23

1982-08-17

Schofer, Joseph L.

Bleaching and dyeing; fluid treatment and chemical modification

Cleaning or laundering

Degumming or desizing

8111, D06L 114, D06M 1104, D06M 1538, D06L 106

Patent

active

043447643

ABSTRACT:
In addition to the very time-consuming enzymatic and hydrolytic desizing processes, oxidative degradation of starch size by means of persulfate, to render the starch water-soluble, is conventionally practised. Because of the chemical similarity between starch and cellulose, oxidative degradation of the cellulose is unavoidable in this desizing process. The invention overcomes this problem by breaking up the macromolecules of the starch into dispersible fragments by means of such small amounts of persulfate that neither is the starch made water-soluble nor is the cellulose significantly damaged, the dispersants employed for the fragments being relatively oxidation-stable polymers of unsaturated carboxylic acids.

REFERENCES:
patent: 3634024 (1972-01-01), Yelin et al.
patent: 3765834 (1973-10-01), Sitver et al.
patent: 3796601 (1974-03-01), Kindron et al.
patent: 4095947 (1978-06-01), Wolf et al.
Derwent Abs. 84717Y/48 (BE-855-048), 11-25-77, "Modified Starch Size for Glass Fibers . . . ", St. Gobain, Ind.

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