Chloride-free cationic polymers using acetate anions
AssigneesRohm and Haas Company, Union Carbide Corporation
InventorsScott Backer, James Pawlow, Muhunthan Sathiosatham, Eric Wasserman
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Abstract
A composition contains ethylenically unsaturated quaternary ammonium cations with acetate counterions, where each of the ethylenically unsaturated ammonium cations contain only one non-aromatic carbon-carbon double bond and the composition contains less than one mole-percent chloride relative to quaternary ammonium cations can be polymerized to form a cationic polymer acetate.
Claims3
A method for producing a cationic polymer from a composition comprising ethylenically unsaturated quaternary ammonium cations with acetate counterions where each of the ethylenically unsaturated ammonium cations contain only one non-aromatic carbon-carbon double bond and the composition contains less than one mole-percent chloride relative to quaternary ammonium cations, the method comprising polymerizing the ethylenically unsaturated quaternary ammonium cations by free radical polymerization of the carbon-carbon double bond so as to produce a cationic polymer having quaternary ammonium pendant functionality with acetate counterions;
- wherein the mole ratio of ethylenically unsaturated quaternary ammonium cations to acetate anions is in a range of 1:0.9 to 1:1.1 at a pH of 8;
- wherein the unsaturated ammonium cations contain only one non-aromatic carbon-carbon double bond;
- wherein the ethylenically unsaturated quaternary ammonium cations have the structure of Formula I:
- where A is CH2, B is hydrogen;
- and C is of Formula III, where Formula III is:
- where R7-R11 are hydrogen.
A cationic polymer having multiple quaternary ammonium pendant functionalities with acetate counterions, wherein the quaternary ammonium pendant functionalities have a structure of that in the brackets of Formula (IV):
- where A is CH2, B is hydrogen;
- and C is of Formula III, where
- Formula III is:
- where R7-R11 are hydrogen.
Dependencies are inferred from the claim text.