Rosin emulsion sizing agent for paper making and method for paper sizing using the same
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United States of America Patent
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Oct 6, 1998
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N/A
app pub date -
Nov 29, 1996
filing date -
Apr 3, 1995
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Abstract
A rosin emulsion sizing agent for paper making comprising a rosin substance, a dispersing agent and water, the rosin substance comprising (a) a rosin or a fortified rosin and (b) a rosin ester or a fortified rosin ester, the dispersing agent comprising a (meth)acrylamide copolymer obtained by polymerizing a polymerizable monomer mixture containing (A) 70 to 95% by mole of (meth)acrylamide, (B) 0.5 to 10% by mole of a sulfo (salt) group-containing monomer or a phosphoric acid (salt) group-containing monomer and (C) 1 to 20% by mole of a hydrophobic monomer, and a method for paper sizing using the same.
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