US 12,281,282 B2
Water-soluble unit dose article
Florence Catherine Courchay, Brussels (BE); Steven G. Friedich, Vancouver, WA (US); Regine Labeque, Neder-Over-Heembeek (BE); Shigeng Li, Naperville, IL (US); and Luca Vitiello, Brussels (BE)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Dec. 15, 2021, as Appl. No. 17/551,218.
Claims priority of application No. 20214142 (EP), filed on Dec. 15, 2020.
Prior Publication US 2022/0186155 A1, Jun. 16, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 17/00 (2006.01); B65D 75/20 (2006.01); B65D 75/26 (2006.01); B65D 85/804 (2006.01); C08F 116/06 (2006.01); C08F 216/06 (2006.01); C08F 222/06 (2006.01); C11D 17/04 (2006.01); C08F 218/08 (2006.01)
CPC C11D 17/045 (2013.01) [B65D 75/20 (2013.01); B65D 75/26 (2013.01); B65D 85/804 (2013.01); C08F 116/06 (2013.01); C08F 216/06 (2013.01); C08F 222/06 (2013.01); C08F 218/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A water-soluble unit dose article comprising at least two compartments and a household care composition, wherein the household care composition is housed in at least one of the compartments, wherein the unit dose article comprises:
i. a first water-soluble film, wherein the first water-soluble film has a first side and a second side, and wherein the first water soluble film comprises a first polyvinyl alcohol (PVOH) resin, wherein the first polyvinyl alcohol resin comprises:
i. a first polyvinyl alcohol polymer comprising carboxylated anionic monomer units and vinyl alcohol monomer units, and optionally vinyl acetate monomer units, and wherein the carboxylated anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleate, dialkyl maleate, maleic anhydride, and combinations thereof;
ii. a second PVOH polymer wherein the second PVOH polymer is a homopolymer wherein the homopolymer consists of vinyl alcohol monomer units and optionally vinyl acetate monomer units;
ii. a second water-soluble film, wherein the second water-soluble film has a first side and a second side, and wherein the second water-soluble film comprises a second polyvinyl alcohol resin, wherein the second polyvinyl alcohol resin comprises:
i. less than about 15% by weight of the second polyvinyl alcohol resin of a polyvinyl alcohol polymer comprising carboxylated anionic monomer units, vinyl alcohol monomer units, and optionally vinyl acetate monomer units, and wherein the carboxylated anionic monomer unit is derived from a member selected from the group consisting of maleic acid, monoalkyl maleate, dialkyl maleate, maleic anhydride, and combinations thereof;
ii. from about 85% to about 100% by weight of the second polyvinyl alcohol resin of a polyvinyl alcohol homopolymer or a homopolymer blend, wherein the homopolymers consist of vinyl alcohol monomer units;
wherein the second polyvinyl alcohol resin has an average about 4% solution viscosity in deionised water at about 20° C. of between about 10 mPa·s and less than about 12 mPa·s;
iii. a third water-soluble film, wherein the third water-soluble film has a first side and a second side, and wherein the third water soluble film comprises a third polyvinyl alcohol (PVOH) resin, wherein the first side of the first water-soluble film is sealed to the second side of the second water-soluble film to create a first compartment between the first water-soluble film and the second water-soluble film, and the first side of the second water-soluble film is sealed to the second side of the third water-soluble film to create at least a second compartment between the second water-soluble film and the third water-soluble film, and wherein the second compartment is positioned above the first compartment.