Application US20170355937

WATER-SOLUBLE UNIT DOSE ARTICLES MADE FROM A COMBINATION OF DIFFERENT FILMS AND CONTAINING HOUSEHOLD CARE COMPOSITIONS
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US20170355937

1. A water-soluble unit dose article comprising at least one sealed compartment comprising at least one household care composition, the water-soluble unit dose article comprising (16) (4)

a first water soluble film;

and a second water soluble film;

wherein the first film is sealed to the second film to form the at least one sealed compartment;

wherein the first water-soluble film is chemically different from the second water soluble film with respect to the anionic content of the films.

2. The water-soluble unit dose article of claim 1, wherein the first water soluble film comprises a first anionic content, the second water soluble film comprises a second anionic content, and the first anionic content is greater than the second anionic content. (0)

3. The water-soluble unit dose article of claim 1, wherein the difference between the first anionic content and the second anionic content is about 0.05 mol % to about 4 mol %, or about 0.1 mol % to about 2 mol %, or about 0.2 mol % to about 1 mol %. (0)

4. The water-soluble unit dose article of claim 1, wherein the first water-soluble film comprises a first anionic content ranging from about 0.5 mol % to about 10 mol %, or about 0.75 mol % to about 7.5 mol %, or about 1 mol % to about 5 mol %, or about 1.25 mol % to about 4 mol %, or about 1.5 mol % to about 3 mol % of total PVOH polymer in the film and the second water-soluble resin comprises a second anionic content ranging from about 0 mol % to about 5 mol %, or about 0.25 mol % to about 4 mol %, or about 0.5 mol % to about 3 mol %, or about 0.75 mol % to about 2 mol %, or about 1 mol % to about 1.5 mol % of total PVOH polymer in the film. (0)

5. The water-soluble unit dose article of claim 1, wherein the first water soluble film comprises a first water soluble resin and the second water soluble film comprises a second water soluble resin. (1) (0)

7. The water-soluble unit dose article of claim 1, wherein the first water soluble resin comprises at least one polyvinyl alcohol copolymer comprising an anionic monomer unit(s); and the second water soluble resin comprises at least one polyvinylalcohol homopolymer and is substantially free of polyvinyl alcohol copolymer comprising an anionic monomer unit(s). (0)

8. The water-soluble unit dose article of claim 1, wherein the first water soluble resin comprises a first blend of two or more polyvinyl alcohol copolymers comprising anionic monomer unit(s), the second water soluble resin comprises a second blend of two or more polyvinyl alcohol copolymers comprising anionic monomer unit(s), and the first blend is chemically different from the second blend. (0)

9. The water-soluble unit dose article of claim 1, wherein the first water soluble resin comprises a first blend of at least one polyvinyl alcohol copolymer comprising an anionic monomer unit(s) and at least one polyvinyl alcohol homopolymer, the second water soluble resin comprises a second blend of at least one polyvinyl alcohol copolymer comprising an anionic monomer unit(s) and at least one polyvinyl alcohol homopolymer, and the first blend is chemically different from the second blend. (6) (0)

10. The water-soluble unit dose article of claim 9 wherein the first water soluble resin comprises from about 1% to about 70% by weight of the first water soluble resin of the polyvinyl alcohol copolymer comprising an anionic monomer unit and from about 30% to about 99% by weight of the first water soluble resin of the polyvinyl alcohol homopolymer. (1) (0)

12. The water-soluble unit dose article of claim 9, wherein the second water soluble resin comprises from about 1 wt % to about 70 wt % by weight of the second water soluble resin of the polyvinyl alcohol copolymer comprising an anionic monomer unit and from about 30 wt % to about 99 wt % by weight of the second water soluble resin of the polyvinyl alcohol homopolymer. (1) (0)

14. The water-soluble unit dose article of claim 9, wherein the first water soluble resin comprises from about 10 wt % to about 32 wt % by weight of the first water soluble resin of the polyvinyl alcohol copolymer comprising an anionic monomer unit and the second water soluble resin comprises from about 33 wt % to about 50 wt % by weight of the second water soluble resin of the polyvinyl alcohol copolymer comprising an anionic monomer unit. (0)

15. The water-soluble unit dose article of claim 9, wherein the first water soluble resin comprises at least one polyvinyl alcohol copolymer(s) comprising from about 2 mol % to about 8 mol %, or from about 3 mol % to about 5 mol %, or from about 1 mol % to about 4 mol % of the anionic monomer unit with respect to total polyvinyl alcohol copolymer present. (0)

16. The water-soluble unit dose article of claim 9, wherein the second water soluble resin comprises at least one polyvinyl alcohol copolymer(s) comprising from about 2 mol % to about 8 mol %, or from about 3 mol % to about 5 mol %, or from about 1 mol % to about 4 mol % of the anionic monomer unit with respect to total polyvinyl alcohol copolymer present. (0)

17. The water-soluble unit dose article of claim 9, wherein the first water soluble resin comprises at least one polyvinyl alcohol copolymer(s) comprising from about 1 mol % to about 3 mol % of the anionic monomer unit with respect to total polyvinyl alcohol copolymer present and the second water soluble resin comprises at least one polyvinyl alcohol copolymer(s) comprising from about 4 mol % to about 8 mol % of the anionic monomer unit with respect to total polyvinyl alcohol copolymer present. (0)

18. The water-soluble unit dose article of claim 1, wherein the first water soluble film is thermoformed prior to incorporation into the water-soluble unit dose article. (0)

19. The water-soluble unit dose article of claim 1, wherein the second water soluble film is not thermoformed prior to incorporation into the water-soluble unit dose article. (0)

20. The water-soluble unit dose article of claim 1, wherein the anionic monomer unit is selected from the group consisting of anionic monomers derived from vinyl acetic acid, alkyl acrylates, maleic acid, monoalkyl maleate, dialkyl maleate, monomethyl maleate, dimethyl maleate, maleic anhydride, fumaric acid, monoalkyl fumarate, dialkyl fumarate, monomethyl fumarate, dimethyl fumarate, fumaric anhydride, itaconic acid, monomethyl itaconate, dimethyl itaconate, itaconic anhydride, citraconic acid, monoalkyl citraconate, dialkyl citraconate, citraconic anhydride, mesaconic acid, monoalkyl mesaconate, dialkyl mesaconate, mesaconic anhydride, glutaconic acid, monoalkyl glutaconate, dialkyl glutaconate, glutaconic anhydride, vinyl sulfonic acid, alkyl sulfonic acid, ethylene sulfonic acid, 2-acrylamido-1-methyl propane sulfonic acid, 2-acrylamide-2-methylpropanesulfonic acid, 2-methylacrylamido-2-methylpropanesulfonic acid, 2-sulfoethyl acrylate, alkali metal salts thereof, esters thereof, and combinations thereof, preferably the anionic monomer unit is selected from the group consisting of anionic monomer units derived from maleic acid, monoalkyl maleate, dialkyl maleate, maleic anhydride, alkali metal salts thereof, esters thereof, and combinations thereof. (0)

21. The water-soluble unit dose article of claim 1, wherein the first water-soluble film and the second water-soluble film each independently comprises from about 30 wt % to about 90 wt %, or from about 40 wt % to about 80 wt %, or from about 50 wt % to about 75 wt %, or from about 60 wt % to about 70 wt % by weight of the film of water-soluble resin. (0)

22. The water-soluble unit dose article of claim 1, wherein the first water-soluble film and the second water-soluble film each independently has a thickness prior to incorporation into the water-soluble unit dose article of about 40 microns to about 100 microns, or about 60 microns to about 90 microns, or about 70 microns to about 80 microns. (0)

23. The water-soluble unit dose article of claim 1, wherein the difference in thickness between the first water-soluble film and the second water-soluble film is less than about 50%, or less than about 30%, or less than about 20%, or less than about 10%. (0)

24. The water-soluble unit dose article of claim 1, wherein at least one of the first water soluble film or the second water soluble film comprises an aversive agent. (0)

25. The water-soluble unit dose article of claim 1, wherein the water-soluble unit dose article comprises at least two sealed compartments, or at least three sealed compartments, wherein a second compartment is superposed on a first compartment. (0)

26. The water-soluble unit dose article of claim 1, wherein the unit dose article comprises a top film, a middle film, and a bottom film, the top and bottom films comprising the first water-soluble film and the middle film comprising the second water-soluble film. (0)

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Application US20170355937

WATER-SOLUBLE UNIT DOSE ARTICLES MADE FROM A COMBINATION OF DIFFERENT FILMS AND CONTAINING HOUSEHOLD CARE COMPOSITIONS

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