FIELD: chemistry.
SUBSTANCE: invention relates to water-soluble films containing a mixture of polyvinyl-alcohol (PVOH) resins and optionally one or more additional components, such as plasticisers, fillers, surfactants and other additives. PVOH resin mixture contains a PVOH copolymer containing one or more types of anionic monomer links, such as a PVOH terpolymer, and a PVOH polymer, such as a PVOH homopolymer. When mixing copolymer PVOH and homopolymer PVOH in certain proportions and / or during their selection with due allowance for various criteria related to viscosity of 4 % aqueous solution of one or both of homopolymer(s) PVOH and copolymer(s) PVOH. Described also are articles containing a water-soluble film and containing a composition such as a household chemistry composition, a method for production thereof and a method of treating the substrate with an article.
EFFECT: technical result is the obtained water-soluble film, made from a mixture of PVOH resins, demonstrates significantly improved properties of dissolution in water.
85 cl, 15 tbl, 4 dwg, 11 ex
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