Back to results
US 11,767,405 B2Granted
Water soluble film, packets employing the film, and methods of making and using same
AssigneeMonosol, LLC
InventorsSteven G. Friedrich, David M. Lee, Shinsuke Nii
Life of this patent
Estimating the term…
Abstract
A water-soluble film including a polyvinyl alcohol resin blend is disclosed herein. Also disclosed are related packets incorporating the film, and related methods of making and using the film and packets.
Claims30
A film comprising a blend of at least two different polyvinyl alcohol (PVOH) polymers, comprising
- a. from 10% to 50% by weight of the blend of at least two different polyvinyl alcohol polymers of a first polyvinyl alcohol polymer comprising at least two monomers, the first monomer comprising a maleic acid derived monomer unit, a second monomer comprising a vinyl alcohol monomer unit, and optionally third monomer comprising a vinyl acetate monomer unit, the amount of maleic acid derived monomer unit is between 3 mol % and 6 mol % of the first polyvinyl alcohol polymer,
- b. from 50% to 90% by weight of the blend of at least two different polyvinyl alcohol polymers of a second polyvinyl alcohol polymer consisting of vinyl alcohol monomer units and (optionally) vinyl acetate monomer units.
Dependencies are inferred from the claim text.