Aqueous dispersion of cationic fine grain gel and process for preparing the same
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United States of America Patent
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Jan 4, 2000
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N/A
app pub date -
Oct 21, 1997
filing date -
Feb 23, 1996
priority date (Note) -
Expired
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Abstract
A process for preparing an aqueous dispersion of a cationic fine grain gel, comprising microemulsion polymerizing (polymerizing in microemulsions) an unsaturated monomer M under the presence of a polymer P which contains 30 to 92.5% by mole of a nonionic structure unit (a) and 70 to 7.5% by mole of a quaternary ammonium group-containing structure unit (b), and which contains the specific amount of a specific structure unit (b.sub.1) having a quaternary ammonium group and a polymerizable double bond, and an aqueous dispersion of a cationic fine grain gel obtainable by the process.
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