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US 2022/0356314 A1Published application
Water Soluble Unit Dose Film for Packaging Harsh Chemicals
AssigneeMonosol, LLC
InventorJONATHON KNIGHT
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Abstract
Disclosed herein are water-soluble films and/or water soluble unit dose articles comprising a water soluble mixture comprising a polyvinyl alcohol (PVOH) and a polyvinylpyrrolidone (PVP), and methods of making and using the same.
Claims31
A water soluble film comprising:
- a water soluble mixture of a polyvinyl alcohol (PVOH) and a polyvinylpyrrolidone (PVP),
- wherein the PVOH and the PVP are present in a ratio of about 3:1 by weight to about 19:1 by weight, respectively, and the PVOH comprises an 2-acrylamide-2-methylpropanesulfonic acid (AMPS) modified PVOH or a maleate modified PVOH.
A water soluble film comprising:
- a water soluble mixture of:
- a maleate modified polyvinyl alcohol (PVOH), a polyvinylpyrrolidone (PVP), a plasticizer, and an antioxidant,
- wherein the maleate modified PVOH and the PVP are present in a weight ratio of about 6.5:1 to about 7.5:1, respectively, the maleate modified PVOH comprises a maleate monomer unit present in an amount of about 1.8 mol %, the maleate modified PVOH comprises about 2 pendant carboxylate groups per maleate monomer unit, the polyvinylpyrrolidone PVP has a weight average molecular weight in a range of 1.2 million g/mol to 3 million g/mol, the plasticizer comprises about 2 PHR to about 10 PHR glycerin and about 2 PHR to about 10 PHR trimethylolpropane, the antioxidant comprises gallic acid and sodium metabisulfite, and a total amount of the antioxidant present is about 2 PHR to about 7 PHR.
-54. (canceled)
Dependencies are inferred from the claim text.