Method of sizing hydrophobic yarn

Details Method of sizing hydrophobic yarn Method of sizing hydrophobic yarn

1981-10-20

1984-05-15

Page, Thurman K.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

81156, 252 86, 427155, 4273899, 4273934, 427401, 428245, 428265, B32B 700, B65B 3300, B05D 302

Patent

active

044488394

ABSTRACT:
A method of sizing a hydrophobic yarn for weaving comprising the steps of applying thereto an acid pH latex of a free radical initiated vinyl polymer and drying the yarn. The polymer has a weight average molecular weight of from about 300,000 to about 2,500,000, and in dried film form is hydrophobic, not redispersible in a solution at a low pH and redispersible in an alkaline aqueous medium. The polymer is prepared from monomers comprising about 8% to about 14%, by weight ethylenically unsaturated acid. The average solubility parameter of the monomers in the polymer is between about 9.0 and about 9.5; the calculated polymer T.sub.g is between about -20.degree. C. and 20.degree. C. Preferred yarns are nylon and polyester.

REFERENCES:
patent: 2807865 (1957-10-01), Shippee
patent: 3676207 (1972-07-01), Lofton et al.
patent: 4015317 (1977-04-01), Johnsen
patent: 4033922 (1977-07-01), Baron et al.
patent: 4106900 (1978-08-01), Perkins
patent: 4239671 (1980-12-01), Fink et al.
patent: 4248755 (1981-02-01), Williams
patent: 4312914 (1982-01-01), Guth

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