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US 11,352,474 B2Granted
Compositions in the form of dissolvable solid structures
AssigneeThe Procter & Gamble Company
InventorsMin Mao, Mark William Hamersky, Robert Wayne Glenn, Jr., Todd Ryan Thompson
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Abstract
Described are dissolvable, porous solid structures formed using certain vinyl acetate-vinyl alcohol copolymers. The copolymer and the porosity of the structure allow for liquid flow during use such that the structure readily dissolves to provide a desired consumer experience. Also described are processes for making open cell foam and fibrous dissolvable solid structures.
Claims15
A fibrous dissolvable solid structure comprising a plurality of fibers comprising:
- from about 3 wt % to about 75 wt % of a surfactant wherein the surfactant comprises a cationic surfactant;
- from about 10 wt % to about 50 wt % of a first copolymer comprising vinyl acetate and vinyl alcohol units, wherein the copolymer comprises not more than about 84% alcohol units and has weight average molecular weight (Mw) of from about 20,000 to about 60,000;
- from about 5 wt % to about 50 wt % of a second copolymer comprising vinyl acetate and vinyl alcohol units, wherein the second copolymer comprises not more than about 84% alcohol units alcohol units and has a Mw of from about 70,000 to about 500,000.
Dependencies are inferred from the claim text.