# US 11,441,002 B2 · Free standing dispersant film > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,002 B2 - Document ID: US11441002B2 - Status: Granted - Kind: B2 - Application number: 16/606,292 - Filed: 2018-05-10 - Published: 2021-04-08 - Granted: 2022-09-13 - Earliest claimed: 2017-05-31 - Assignees: Rohm and Haas Company - Applicants: Rohm and Haas Company - Inventors: Randara Pulukkody; Scott Backer; Afua Sarpong Karikari; Michael C. Mitchell - Web page: https://patentgrep.com/patent/US11441002B2 ## CPC - C08J 5/18: Manufacture of films or sheets - C11D 17/042: {Water soluble or water disintegrable containers or substrates containing cleaning compositions or additives for cleaning compositions} - B65D 65/46: Applications of disintegrable, dissolvable or edible materials - C08J 2329/04: Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids - C08J 2471/02: Polyalkylene oxides - C08L 2205/03: containing three or more polymers in a blend - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C11D: DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract A free standing dispersant film is provided, including: a partially hydrolyzed polyvinyl acetate; a poly(ethylene oxide); a polyalkylene glycol; a plasticizer; a dispersant polymer; optionally, a poly(isobutylene-co-maleic anhydride) copolymer, wherein the poly(isobutylene-co-maleic anhydride) copolymer is at least partially neutralized; and optionally, an optional additive. ## Claims ### Claim 1 A free standing dispersant film, comprising: 19 to 85 wt % of a partially hydrolyzed polyvinyl acetate; 5 to 70 wt % of a poly(ethylene oxide), wherein the poly(ethylene oxide) has a weight average molecular weight of 20,000 to 2,000,000 Daltons; 1 to 35 wt % of a polyalkylene glycol, wherein the polyalkylene glycol has a weight average molecular weight of 250 to 5,300 Daltons; 0.5 to 25 wt % of a plasticizer, wherein the plasticizer is selected from the group consisting of 1,2-ethanediol; 1,3-propanediol; 1,2-propanediol; 1,2,3-propanetriol; 1,4-butanediol; 1,5-pentanediol; 1,6-hexanediol; 2,3-butanediol; 1,3-butanediol; 2-methyl-1,3-propanediol; diethylene glycol; triethylene glycol; and mixtures thereof; 2 to 50 wt % of a dispersant polymer, wherein the dispersant polymer is an amphoteric dispersant polymer; wherein the amphoteric dispersant polymer consists of a copolymer of an anionic vinyl monomer and a cationic vinyl monomer; wherein the anionic monomer is selected from at least one of acrylic acid and methacrylic acid; wherein the cationic vinyl monomer is selected from at least one of 2-(dimethylamino)ethyl methacrylate, 2-(diethylamino)ethyl methacrylate and 2-(dipropylamino)ethyl methacrylate; 1 to 7.5 wt % of a poly(isobutylene-co-maleic anhydride) copolymer, wherein the poly(isobutylene-co-maleic anhydride) copolymer is at least partially neutralized; and 0 to 10 wt % of an optional additive. ### Claim 2 (depends on 1) The free standing dispersant film of claim 1, further comprises: 0.01 to 1.8 wt % of a polyvinyl pyrrolidone; wherein the weight ratio of the partially hydrolyzed polyvinyl acetate to the polyvinyl pyrrolidone is >10:1. ### Claim 3 (depends on 2) The free standing dispersant film of claim 2, wherein the free standing dispersant film includes at least one optional additive selected from the group consisting of a nano clay, a defoamer, a crosslinking agent and mixtures thereof. ### Claim 4 (depends on 3) The free standing dispersant film of claim 3, wherein the free standing dispersant film contains: 0.05 to 0.2 wt % of the polyvinyl pyrrolidone; wherein the at least one optional additive includes a nano clay and a defoamer; and wherein the free standing dispersant film contains: 0.1 to 0.5 wt % of the nano clay; and 3 to 7 wt % of the defoamer. ### Claim 5 (depends on 1) The free standing dispersant film of claim 1, wherein the free standing dispersant film is cold water soluble. ### Claim 6 (depends on 1) The free standing dispersant film of claim 1, wherein the free standing dispersant film forms a cavity. ### Claim 7 (depends on 6) The free standing dispersant film of claim 6, wherein the cavity is encapsulated by the free standing dispersant film. ### Claim 8 (depends on 1) A unit dose package, comprising: a free standing dispersant film of claim 1; and a detergent formulation, comprising: 14 to 60 wt % of a surfactant; 3 to 25 wt % of a salt; and 20 to 75 wt % of a water; wherein the free standing dispersant film forms a cavity; wherein the detergent formulation is disposed within the cavity; and wherein the detergent formulation is in contact with the free standing dispersant film. ### Claim 9 (depends on 8) The unit dose package of claim 8, wherein the free standing dispersant film encapsulates the cavity.