Composition based on nanoparticles or a nanolatex of polymers for fabric care
AssigneeRhodia Chimie
InventorsEric Aubay, Marie-Pierre LaBeau, Ian Harrison
Life of this patent
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Abstract
Composition for fabric care, in particular for cotton-based fabrics, comprising nanoparticles or a nanolatex of a polymer which is insoluble under the direct and/or indirect working conditions of the said composition in an aqueous or wet medium. The composition may be a solid or liquid detergent formulation, a liquid rinsing and/or softening formulation, a tumble dryer additive placed in contact with the wet fabrics in a tumble dryer, an aqueous ironing formulation or a prespotter placed on the dry fabrics prior to a washing operation.
Claims13
A fabric treating composition in the form of a solid or concentrated aqueous dispersion which comprises:
- (A) from 0.05% to 10% by weight of nanoparticles or at least one nanolatex of at least one addition polymer (P3) which is insoluble under the working conditions of said composition in an aqueous or wet medium, said addition polymer (P3) containing amphoteric units, and comprising:
- (1) at least 70% of the total mass of said polymer of hydrophobic monomer units (N) derived from vinylaromatic monomers, alkyl esters of α-β monoethylenically unsaturated acids, vinyl or allylic esters of saturated carboxylic acids, or a-F3 monoethylenically unsaturated nitriles;
- (2) at least 0.1% and not more than 20% of the total mass of said polymer of amphoteric hydrophilic monomer units (F2) derived from N,N-dimethyl-N methacryloyloxyethyl-N-(3-suiphopropyl) ammonium sulphobetaine, N,N-dimethyl-N- (2-methacrylamidoethyl)-N-(3-sulphopropyl) ammonium betaine, 1-vinyl-3-(3-suiphopropyl) imidazolidium betaine, 1-(3-sulphopropyl)-2-vinylpyridinium betaine, or derivatives of the quaternization reaction of N-(dialkylamino-ω-alkyl) amides of α-β ethylenically unsaturated carboxylic acids or α-β monoethylenically unsaturated amino esters, with a chloroacetate of an alkali metal or with propane sultone;
- (3) optionally, uncharged or non-ionizable hydrophilic monomer units (F4) derived from hydroxyalkyl esters of α-β monoethylenically unsaturated acid amides, α-β monoethylenically unsaturated acid amides, α-β ethylenically unsaturated monomers bearing a water-soluble polyoxyalkylenated segment, α-β monoethylenically unsaturated monomers that are precursors of vinyl alcohol units or of polyvinyl alcohol segments by polymerization and then hydrolysis, or methacrylamidoethyl-2-imidazolidinone;
- (4) optionally, cationic or cationizable hydrophilic monomer units (F1) derived from N,N-dialkylamino-ω-alkyl)amides of α-β monoethylenically unsaturated carboxylic acids, α-β monoethylenically unsaturated amino esters or monomers that are precursors of primary amine functions by hydrolysis;
- and
- (5) optionally, at least one crosslinking unit (R) derived from divinylbenzene, ethylene glycol dimethacrylate, allyl methacrylate, methylenebis(acrylamide) or glyoxal bis (acrylamide);
- (B) from about 3% to about 50% by weight of at least one anionic, cationic, nonionic and/or amphoteric surfactant;
- and
- (C) optionally, other detergent adjuvants;
- the combination of hydrophilic monomer units representing at least 1% of the weight of the polymer (P3), the molar ratio of cationic charges to anionic charges ranging from 1/99 to 80/20, said nanoparticles or the said nanolatex have a mean particle size of polymer of from 10 to 500 nm;
- and the addition polymer (P3) being present in an amount sufficient to impart crease-resistant, softening or pre-spotting characteristics to the fabric treating composition.
Dependencies are inferred from the claim text.