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US 11,891,589 B2Granted
Fabric care compositions that include a graft copolymer and related methods
AssigneeThe Procter & Gamble Company
InventorsRenae Dianna Fossum, Lidiany Gonzalez, Elaine Marie Burt, Jan Ole Mueller, Dieter Hannu Boeckh, Dawid Marczewski
Life of this patent
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Abstract
Fabric care compositions that include a graft copolymer, which may include (a) a polyalkylene oxide, such as polyethylene oxide (PEG); (b) N-vinylpyrrolidone (VP); and (c) a vinyl ester, such as vinyl acetate. Methods and uses relating to such compositions and/or graft copolymers.
Claims17
A composition comprising:
- a graft copolymer comprising
- (a) a polyalkylene oxide which as a number average molecular weight of from about 1000 to about 20,000 Daltons and is based on ethylene oxide, propylene oxide, or butylene oxide,
- (b)N-vinylpyrrolidone, and
- (c) vinyl ester derived from a saturated monocarboxylic acid containing from 1 to 6 carbon atoms and/or a methyl or ethyl ester of acrylic or methacrylic acid,
- wherein the weight ratio (a):(b) is from about 1:0.1 to about 1:1,
- wherein the amount, by weight, of (a) is greater than the amount of (c),
- an amphiphilic copolymer that is free of vinyl pyrrolidone, the amphiphilic copolymer comprising vinyl acetate grafted to a polyalkylene oxide base;
- and
- a treatment adjunct;
- wherein the composition is a fabric care composition and the ratio by weight of the graft copolymer to the amphiphilic polymer is from about 1:10 to about 10:1.
7 more elements
Dependencies are inferred from the claim text.