abstract |
Disclosed herein are water-soluble films comprising a polyvinyl alcohol (PVOH) resin blend and optionally one or more additional components, such as plasticizers, fillers, surfactants, and other additives. Also disclosed herein are articles comprising the water-soluble films and comprising compositions such as home care compositions. The PVOH resin blend comprises a PVOH copolymer containing one or more types of anionic monomer units, such as a PVOH terpolymer, and a PVOH polymer, such as a partially or fully hydrolyzed PVOH homopolymer. When the PVOH copolymer and PVOH polymer are blended in specific proportions and/or relative to various criteria related to the 4% solution viscosity of one or both of the PVOH polymer and PVOH copolymer , the resulting water-soluble films formed from the PVOH resin blends exhibited substantially improved aqueous solubility characteristics. |