IP Library › Granted Patent US 8,048,843
Granted Patent B2
US 8,048,843 · App. 13/018,543 · Granted Nov 1, 2011

Fabric care compositions

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Quick Facts
Patent No.
US 8,048,843
App. No.
13/018,543
Granted
Nov 1, 2011
Kind
B2
Abstract

Polyurethaneurea compositions in the form of powders and dispersions are provided for enhancing properties of washed fabric including easy care, better iron gliding, improved shape retention, perfume substantiation and stain management properties.

Claims (7)

1. A composition comprising a nonionic film-forming dispersion, wherein said dispersion comprises water and a polymer; said polymer comprises a reaction product of a prepolymer and water as a chain extender; and

said prepolymer consisting essentially of a reaction product of a glycol and a mixture of 4,4′- and 2,4′-methylene bis(phenyl isocyanyate) (MDI) isomers, wherein the ratio of 4,4′-MDI to 2,4′MDI isomers ranges from 65:35 to 35:65.

2. The composition of claim 1 , wherein said glycol is selected from the group consisting of poly(tetramethylene-co-ethylene ether) glycol and a mixture of poly(tetramethylene ether) glycol with ethoxylated polypropylene glycol.

3. The composition of claim 1 further comprising additives selected from the group consisting of surfactants, defoamers, pigments, solvents, and combinations thereof.

4. A composition comprising a nonionic non-film-forming dispersion, wherein said dispersion comprises water and a polymer; said polymer comprises a reaction product of a prepolymer and a chain extender comprising a diamine chain extender and water; and said prepolymer consisting essentially of a reaction product of a glycol and a mixture of 4,4′- and 2,4′-methylene bis(phenyl isocyanyate) (MDI) isomers, wherein the ratio of 4,4′-MDI to 2,4′MDI isomers ranges from 65:35 to 35:65.

5. The composition of claim 4 further comprising additives selected from the group consisting of surfactants, defoamers, pigments, solvents, and combinations thereof.

6. A polyurethaneurea powder derived from a composition comprising a nonionic non-film-forming dispersion, wherein said dispersion comprises water and a polymer; said polymer comprises a reaction product of a prepolymer and a chain extender comprising a diamine chain extender and water; and said prepolymer consisting essentially of a reaction product of a glycol and 4,4′-methylenebis(phenyl isocyanate).