Method of making paper with high filler content
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United States of America Patent
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Apr 25, 1989
Issued Date -
N/A
app pub date -
Jun 1, 1987
filing date -
Dec 6, 1983
priority date (Note) -
Expired
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Abstract
The invention relates to a method for producing paper by the addition of a retention - dry strength agent system. The system consists of cationic starch with a substitution degree of at least 0.005 in an amount of at least 1%, anionic high-polymer with a molecular weight greater than 10.sup.6 and in an amount of 0.003-0.5%, and cationic synthethic polymer in an amount of 0.005-0.5%.
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