# US 10,308,743 B2 · Water-soluble or water-disintegrable copolymer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,308,743 B2 - Document ID: US10308743B2 - Status: Granted - Kind: B2 - Application number: 15/722,091 - Filed: 2017-10-02 - Published: 2018-01-25 - Granted: 2019-06-04 - Earliest claimed: 2010-10-29 - Assignees: BellandTechnology AG - Applicants: BellandTechnology AG - Inventors: Juan-Carlos Ruggieri; Herbert Leder; Frank Osan - Web page: https://patentgrep.com/patent/US10308743B2 ## CPC - C08F 220/18: with acrylic or methacrylic acids - C08F 220/06: Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof - C08F 220/1804: {C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate} - C08F 220/281: {and containing only one oxygen, e.g. furfuryl (meth)acrylate or 2-methoxyethyl (meth)acrylate} - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS ## Abstract A copolymer is based on α-β-unsaturated monocarboxylic acid, wherein the copolymer has a molar mass <100 000 g/mol. A process of preparing the copolymer compound includes mixing a copolymer in a melt with an impact modifier under action of shearing forces, a proportion of copolymer and impact modifier being selected preferably such that the copolymer forms a continuous phase and the impact modifier forms a discontinuous phase. ## Claims ### Claim 1 A random copolymer based on α-β-unsaturated monocarboxylic acid, wherein the copolymer has a molar mass of 30,000 to <100 000 g/mol and a polydispersity of 2 to 3, and wherein the α-β-unsaturated monocarboxylic acid has a weight fraction of>50% by weight, based on the total weight of the copolymer, wherein the copolymer is in a form of a strand or profile, and the copolymer has in addition to the α-β-unsaturated monocarboxylic acid as comonomer an alkyl ester and/or alkoxy alkyl ester, of an α-β-unsaturated monocarboxylic acid. ### Claim 2 (depends on 1) The random copolymer according to claim 1, wherein the molar mass is 30,000 g/mol to 90,000 g/mol. ### Claim 3 (depends on 1) The random copolymer according to claim 1, wherein the α-β-unsaturated monocarboxylic acid has a weight fraction of 60% by weight to 95% by weight, based on the total weight of the copolymer. ### Claim 4 (depends on 1) The random copolymer according to claim 1, wherein the ester of the α-β-unsaturated monocarboxylic acid is selected from the group consisting of methyl acrylate, ethyl acrylate, n-butyl acrylate, isobutyl acrylate, methoxyethyl acrylate, glycidyl acrylate, methyl methacrylate, ethyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, methoxyethyl methacrylate, glycidyl methacrylate and mixtures thereof. ### Claim 5 (depends on 1) The random copolymer according to claim 1, wherein the ester has a weight fraction of 5% by weight to 40% by weight, based on the total weight of the copolymer. ### Claim 6 (depends on 1) The random copolymer according to claim 1, wherein the copolymer is a copolymer of the α-β-unsaturated monocarboxylic acid and an ester of an α-β-unsaturated monocarboxylic acid. ### Claim 7 A random copolymer based on α-β-unsaturated monocarboxylic acid, wherein the copolymer has a molar mass of 30,000 to <100 000 g/mol and a polydispersity of 2 to 3, the α-β-unsaturated monocarboxylic acid has a weight fraction of>50% by weight, based on the total weight of the copolymer, the copolymer is in a form of a strand or profile, and the copolymer is a solution copolymer. ### Claim 8 (depends on 1) The random copolymer according to claim 1, wherein the copolymer has a glass transition temperature of 60° C. to 140° C. ### Claim 9 (depends on 1) The random copolymer according to claim 1, wherein the copolymer has a melt flow index of 5 g/10 min to 50 g/10 min. ### Claim 10 (depends on 1) The random copolymer according to claim 1, wherein the copolymer is disintegrable or soluble or substantially soluble in an aqueous, pH-neutral environment and/or in an aqueous, alkaline environment. ### Claim 11 (depends on 1) The copolymer according to claim 1, wherein the copolymer is provided or compounded with an impact modifier reactive toward carboxyl groups. ### Claim 12 (depends on 11) The copolymer according to claim 11, wherein the impact modifier has a weight fraction of 10% by weight to 40% by weight, based on the total weight of the copolymer provided or compounded with the impact modifier. ### Claim 13 (depends on 1) A process of preparing the copolymer according to claim 1, wherein an α-β-unsaturated monocarboxylic acid and a comonomer comprising an ester of an α-β-unsaturated monocarboxylic acid, are copolymerized in solution. ### Claim 14 (depends on 1) A copolymer compound comprising a copolymer according to claim 1, and an impact modifier. ### Claim 15 (depends on 14) A process of preparing a copolymer compound according to claim 14, comprising mixing a copolymer in a melt with an impact modifier under action of shearing forces, a proportion of copolymer and impact modifier being selected preferably such that the copolymer forms a continuous phase and the impact modifier forms a discontinuous phase. ### Claim 16 A random copolymer based on α-β-unsaturated monocarboxylic acid, wherein the copolymer has a molar mass of 30,000 to <100 000 g/mol and a polydispersity of 2 to 3, the α-β-unsaturated monocarboxylic acid has a weight fraction of>50% by weight, based on the total weight of the copolymer, the copolymer is in a form of a strand or profile, and the copolymer has in addition to the α-β-unsaturated monocarboxylic acid as comonomer an ester of an α-β-unsaturated monocarboxylic acid.