Method of sizing polyester yarn
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United States of America Patent
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Jul 19, 1983
Grant Date -
N/A
app pub date -
Oct 31, 1980
filing date -
Oct 31, 1980
priority date (Note) -
Expired
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Abstract
Taught is a method of sizing polyester yarn for weaving comprising the steps of applying thereto a latex having an acid pH and of a free radical initiated vinyl polymer having a weight average molecular weight of from about 300,000 to about 2,500,000, said polymer in dried film form being hydrophobic and not redispersible in a solution at a pH of from about 2 to 7 but redispersible by an aqueous alkaline medium, said polymer being prepared from monomers consisting essentially of by weight, 45-65% butyl acrylate a total of 28-45% styrene and/or methyl methacrylate and a total of 8-14% acrylic acid and/or methacrylic acid, and drying the yarn.
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