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US 2002/0058745 A1Published application
Aqueous dispersions
OwnerSun-Yi Huang, Louis Rosati +1inventors
InventorsSun-Yi Huang, Louis Rosati, Joseph J. Kozakiewicz
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Abstract
Aqueous dispersions of cationic water-soluble polymers are provided, as well as processes for making and methods of using the same.
Claims18
An aqueous dispersion comprising:
- a first cationic polymer comprising acrylamide recurring units and recurring units of a quaternary salt of a dialkylamino(alk)acrylate, wherein said first cationic polymer is substantially free of hydrophobic recurring units;
- a second cationic polymer;
- a first kosmotropic salt;
- and
- a second kosmotropic salt;
- wherein said aqueous dispersion contains a total amount of about 5% or greater, by weight based on total weight, of said first kosmotropic salt and said second kosmotropic salt.
3 more elements
An aqueous dispersion comprising:
- a first cationic polymer comprising acrylamide recurring units and recurring units selected from the group consisting of methyl chloride salt of diethylaminoethylacrylate, dimethyl sulfate salt of diethylaminoethylacrylate, methyl chloride salt of dimethylaminoethylacrylate, and dimethyl sulfate salt of dimethylaminoethylacrylate, wherein said first cationic polymer is substantially free of hydrophobic recurring units;
- a second cationic polymer;
- a first kosmotropic salt selected from the group consisting of ammonium sulfate and sodium sulfate;
- and
- a second kosmotropic salt containing an anion selected from the group consisting of acetate, tartrate and citrate;
- wherein said aqueous dispersion contains a total amount of about 5% or greater, by weight based on total weight, of said first kosmotropic salt and said second kosmotropic salt.
3 more elements
An aqueous dispersion comprising:
- a first cationic polymer comprising acrylamide recurring units and recurring units of a quaternary salt of a dialkylamino(alk)acrylate;
- a second cationic polymer;
- a first kosmotropic salt selected from the group consisting of ammonium sulfate and sodium sulfate;
- and
- a second kosmotropic salt containing an anion selected from the group consisting of acetate, tartrate and citrate;
- and
- a viscosity-reducing additive;
- wherein said aqueous dispersion contains a total amount of about 5% or greater, by weight based on total weight, of said first kosmotropic salt and said second kosmotropic salt;
- and
- wherein said aqueous dispersion has a weight average molecular weight of greater than 2,000,000.
7 more elements
Dependencies are inferred from the claim text.