Surface-modified cellulose acetate filaments and a process for producing the same
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United States of America Patent
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Feb 24, 1981
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N/A
app pub date -
Dec 7, 1978
filing date -
Dec 9, 1977
priority date (Note) -
Expired
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Abstract
Surface-modified cellulose acetate filaments having a microporous structure located in the peripheral surface layer thereof are prepared by bringing non-modified cellulose acetate filaments which have an average degree of acetylation of 50 to 62% into contact with an organic solvent which is capable of dissolving or swelling the non-modified filaments and by rapidly evaporating the solvent from the filaments. The microporous structure causes the surface-modified filaments to exhibit a desirable silklike touch and an increased intensity in dye exhaustion of from 1.1 to 2.0 times that of the non-modified filaments.
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