POLYELECTROLYTE COMPLEXES
First Claim
1. An aqueous composition comprising:
- (a) water;
(b) citric acid;
(c) a water soluble cationic first polyelectrolyte comprising at least one of a chitosan, synthetically produced B-1,4-poly-D-glucosamines and derivatives thereof, cationic guar, hydroxypropyl guar or starch bearing cationic charges added by chemical quaternization;
(d) a water soluble anionic second polyelectrolyte comprising at least one of a homopolymer or a copolymer comprising at least one of the following anionic monomers;
acrylic acid, methacrylic acid, maleic acid, maleic anhydride, itaconic acid, styrene sulfonic acid, or acrylamide propane sulfonic acid;
wherein R, the molar ratio of charged groups present on said first polyelectrolyte to oppositely charged groups present on said second polyelectrolyte is between 0.10 to 20;
wherein the first polyelectrolyte and the second polyelectrolyte are not block copolymers.
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Abstract
The present invention relates to aqueous compositions of associative polyelectrolyte complexes (PECs), optionally containing surfactants, biocidal agents and/or oxidants, which can provide surface protection to treated articles including reduced soiling tendency, reduced cleaning effort and improved soil repellancy, as well as providing bacteriostatic properties to treated surfaces that thereby gain resistance to water, environmental exposure and microbial challenge. Treatment means and compositions are provided that employ associative polyelectrolyte complexes formed by combining a water soluble cationic first polyelectrolyte with a water soluble second polyelectrolyte bearing groups of opposite charge to the first polyelectrolyte under suitable mixing conditions where the one polyelectrolyte present in molar excess is added in the form of a first aqueous solution during a mixing step to a second aqueous solution comprising the oppositely charged polyelectrolyte present in molar deficiency. Also provided are means to form stable associative polyelectrolyte complexes in aqueous solutions having R values from about 0.10 to 20, including near stoichiometric R values approaching 1, being the ratio of charged groups present on the component polyelectrolytes employed.
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Citations
21 Claims
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1. An aqueous composition comprising:
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(a) water; (b) citric acid; (c) a water soluble cationic first polyelectrolyte comprising at least one of a chitosan, synthetically produced B-1,4-poly-D-glucosamines and derivatives thereof, cationic guar, hydroxypropyl guar or starch bearing cationic charges added by chemical quaternization; (d) a water soluble anionic second polyelectrolyte comprising at least one of a homopolymer or a copolymer comprising at least one of the following anionic monomers;
acrylic acid, methacrylic acid, maleic acid, maleic anhydride, itaconic acid, styrene sulfonic acid, or acrylamide propane sulfonic acid;wherein R, the molar ratio of charged groups present on said first polyelectrolyte to oppositely charged groups present on said second polyelectrolyte is between 0.10 to 20; wherein the first polyelectrolyte and the second polyelectrolyte are not block copolymers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An aqueous composition comprising:
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(a) water; (b) citric acid; (c) a water soluble cationic first polyelectrolyte comprising at least one of a homopolymer or a copolymer of a diallyl dimethyl ammonium chloride monomer; (d) a water soluble anionic second polyelectrolyte comprising at least one of a homopolymer or a copolymer comprising at least one of the following anionic monomers;
acrylic acid, methacrylic acid, maleic acid, maleic anhydride, itaconic acid, styrene sulfonic acid, or acrylamide propane sulfonic acid;wherein R, the molar ratio of charged groups present on said first polyelectrolyte to oppositely charged groups present on said second polyelectrolyte is between 0.10 to 20; wherein the first polyelectrolyte and the second polyelectrolyte are not block copolymers. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An aqueous composition comprising:
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(a) water; (b) an alpha-hydroxyacid; (c) a water soluble cationic first polyelectrolyte comprising at least one of a homopolymer or a copolymer of a diallyl dimethyl ammonium chloride monomer; (d) a water soluble anionic second polyelectrolyte comprising at least one of a homopolymer or a copolymer comprising at least one of the following anionic monomers;
acrylic acid, methacrylic acid, maleic acid, maleic anhydride, itaconic acid, styrene sulfonic acid, or acrylamide propane sulfonic acid;wherein R, the molar ratio of charged groups present on said first polyelectrolyte to oppositely charged groups present on said second polyelectrolyte is between 0.10 to 20; wherein the first polyelectrolyte and the second polyelectrolyte are not block copolymers. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification