Cellulosic, modified lignin and cationic polymer composition and process for making improved paper or paperboard
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United States of America Patent
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Oct 22, 1996
Issued Date -
N/A
app pub date -
Dec 4, 1995
filing date -
May 28, 1993
priority date (Note) -
Expired
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Abstract
A composition comprising an aqueous cellulosic furnish, a high molecular weight cationic polymer, and an anionic polymer comprising a modified lignin wherein the ratio of the cationic polymer to the anionic polymer is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.
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