Cationic copolymers which are insoluble in water, new dispersions and their use in the coatings of papers
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United States of America Patent
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Aug 23, 1994
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N/A
app pub date -
Aug 31, 1993
filing date -
Dec 9, 1991
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Abstract
Cationic copolymers which are insoluble in water based on acrylamide, and a cationic monomer of general formula (I) ##STR1## in which R and R.sub.1, identical or different, represent a hydrogen atom or a methyl group, X represents an oxygen atom or an NH radical and n represents 2 or 3, containing in molar proportions 5 to 30% of cation units and cross-linked with 0.01% to 0.4% in molar proportions relative to the previous monomers of bisacrylamidoacetic acid and with about 0.01% to 0.1% in molar proportions relative to the monomers of bisacrylamidoacetic acid, self-reversible dispersions containing them and use in coating in the paper industry.
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