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US 10,590,249 B2Granted
Water-soluble films and their use in detergent packets
AssigneeRohm and Haas Company
InventorsAfua Sarpong Karikari, Michael Mitchell, Fanwen Zeng
Life of this patent
Estimating the term…
Abstract
Provided is a water soluble film, and detergent packets comprising the film as an encasing material. The film contains a (meth)acrylic polymer that is a blend of a hard polymer and a soft polymer, and a plasticizer.
Claims8
A water soluble film, comprising:
- (A) an acrylic polymer blend comprising:
- (a) a hard polymer with a glass transition temperature (“Tg”) from 60° C. to 130° C. and comprising polymerized units derived from:
- (i) 50 to 90 wt % of at least one (C1-C10)alkyl (meth)acrylate;
- (ii) 10 to 50 wt % of at least one C3-C8 monoethylenically unsaturated monocarboxylic acid monomer or ethylenically unsaturated dicarboxylic acid monomer;
- and (iii) zero to 25 wt % of least one hydroxyalkyl (meth)acrylate, based on the total weight of the hard polymer;
- and
- (b) a soft polymer with a Tg from minus 20° C. to 40° C. and comprising polymerized units derived from:
- (i) 50 to 90 wt % of at least one (C1-C10)alkyl (meth)acrylate;
- (ii) 10 to 50 wt % of at least one C3-C8 monoethylenically unsaturated monocarboxylic acid monomer or ethylenically unsaturated dicarboxylic acid monomer;
- and (iii) zero to 25 wt % of least one hydroxyalkyl (meth)acrylate, based on the total weight of the soft polymer,
- wherein the difference in the Tgs of the hard polymer and the soft polymer is 40° C. or more, and wherein at least a portion of the carboxylic acid groups on the hard polymer or the soft polymer, or both the hard polymer and the soft polymer, are neutralized;
- and
- (B) a plasticizer;
- and
- (C) an ionic crosslinker.
12 more elements
Dependencies are inferred from the claim text.