Rosin emulsion sizing agent
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United States of America Patent
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Jul 24, 1990
Grant Date -
N/A
app pub date -
Oct 29, 1987
filing date -
Nov 5, 1986
priority date (Note) -
Expired
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Abstract
A rosin emulsion sizing agent comprising a fortified rosin, an at least partially quarternized product copolymer principal consisting of a (meth)acrylic acid alkylaminoalkyl ester or amide monomer and water exhibits excellent sizing effect in a papermaking system of higher pH, higher water hardness and higher temperature, in which conventional anionic rosin emulsion sizing agents cannot effectively function.
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