Process for the manufacture of hydrophilic polyester fibers
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United States of America Patent
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Sep 16, 1986
Grant Date -
N/A
app pub date -
Feb 14, 1984
filing date -
Feb 19, 1983
priority date (Note) -
Expired
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Abstract
Polyester fibers containing one or more oxalate complexes of the general formula Me.sub.n [Z(C.sub.2 O.sub.4).sub.m ] are drawn and subjected to a hydrosetting process at temperatures of 90.degree. to 170.degree. C. in the presence of liquid water, the water containing one or more of the following surfactants: salts of partial esters of phosphoric aid, sulfosuccinic aid esters, phosphonic acid esters as well as ethoxylated silicon compounds, ethoxylated fatty alcohols, polyglycol esters of fatty acids as well as various imidazole salts of partially or completely hydrogenated imidazoles. In this way the hydrosetting process is accelerated and a more stable pore structure is obtained. Water absorption and retention are also increased.
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