# US 2021/0332005 A1 · Ch-acidic methacrylic esters for the preparation of aqueous polymer dispersions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0332005 A1 - Document ID: US20210332005A1 - Status: Published application - Kind: A1 - Application number: 17/260,223 - Filed: 2019-07-08 - Published: 2021-10-28 - Earliest claimed: 2018-07-17 - Assignees: Evonik Operations GmbH - Applicants: Evonik Operations GmbH - Inventors: Marcel TRESKOW; Maik CASPARI; Thorben SCHÜTZ; Steffen KRILL - Web page: https://patentgrep.com/patent/US20210332005A1 ## CPC - C09D 133/26: Homopolymers or copolymers of acrylamide or methacrylamide - C07C 255/19: containing cyano groups and carboxyl groups, other than cyano groups, bound to the same saturated acyclic carbon skeleton - C08F 212/08: Styrene - C08F 220/603: {and containing oxygen in addition to the carbonamido oxygen and nitrogen} - C08F 2800/20: as weight or mass percentages - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS ## Abstract The present invention relates to CH-acidic methacrylic esters and also copolymers obtainable from CH-acidic methacrylic esters. Furthermore, the present invention relates to coating compositions comprising these copolymers. ## Claims ### Claim at position 1 1-11. (canceled) ### Claim 12 A compound of formula (I): wherein R1 is selected from a hydrogen atom and a methyl group; and R2 is an optionally substituted alkylene group of formula CnHm, wherein n=2 to 4 and m=2 to 8. ### Claim 13 (depends on 12) The compound of claim 12, wherein the alkylene group R2 is selected from the group consisting of: 1,2-ethylene; 1,3-propylene; 1,2-propylene; 1,4-butylene; 1,3-(2-hydroxy)propylene; and 1,3-(2,2-dimethyl)propylene. ### Claim 14 (depends on 12) The compound of claim 12, wherein R1 is a methyl group. ### Claim 15 (depends on 13) The compound of claim 13, wherein R1 is a methyl group. ### Claim 16 A copolymer obtainable by polymerization of a monomer mixture comprising a compound of formula (I): wherein R1 is selected from a hydrogen atom and a methyl group; and R2 is an optionally substituted alkylene group of formula CnHm, wherein n=2 to 4 and m=2 to 8; and wherein the monomer mixture comprises at least 0.5 wt % of the compound of formula I based on the weight of the monomer mixture. ### Claim 17 (depends on 16) The copolymer of claim 16, wherein the alkylene group R2 of said compound of formula I is selected from the group consisting of: 1,2-ethylene; 1,3-propylene; 1,2-propylene; 1,4-butylene; 1,3-(2-hydroxy)propylene; and 1,3-(2,2-dimethyl)propylene. ### Claim 18 (depends on 16) The copolymer of claim 16, wherein R1 of said compound of formula I is a methyl group. ### Claim 19 (depends on 17) The copolymer of claim 17, wherein R1 of said compound of formula I is a methyl group. ### Claim 20 (depends on 16) The copolymer of claim 16 wherein said monomer mixture comprises at least 1 wt %, of said compound of formula I based on the weight of the monomer mixture. ### Claim 21 (depends on 16) The copolymer of claim 16, wherein the monomer mixture comprises: 0.5 to 90 wt % of said compound of formula I; 10 to 95 wt % of at least one monomer comprising ester groups; 0 to 10 wt % of at least one monomer with an acid group; and 0 to 50 wt % of at least one styrene monomer, based on the weight of the copolymer. ### Claim 22 (depends on 21) The copolymer of claim 21, wherein the alkylene group R2 of said compound of formula I is selected from the group consisting of: 1,2-ethylene; 1,3-propylene; 1,2-propylene; 1,4-butylene; 1,3-(2-hydroxy)propylene; and 1,3-(2,2-dimethyl)propylene. ### Claim 23 (depends on 21) The copolymer of claim 21, wherein R1 of said compound of formula I is a methyl group. ### Claim 24 (depends on 22) The copolymer of claim 22, wherein R1 of said compound of formula I is a methyl group. ### Claim 25 A coating, obtainable by applying an aqueous dispersion to an article to be coated and subsequently drying and curing the article, wherein said aqueous dispersion comprises 0.1 to 90 wt % of a copolymer based on the weight of the aqueous dispersion; wherein said copolymer is obtainable by polymerization of a monomer mixture comprising a compound of general formula (I): wherein R1 is selected from a hydrogen atom and a methyl group; and R2 is an optionally substituted alkylene group formula CnHm, wherein n=2 to 4 and m=2 to 8; and wherein the monomer mixture comprises at least 0.5 wt %, of the compound of formula I based on the weight of the monomer mixture. ### Claim 26 (depends on 25) The coating of claim 25, wherein the alkylene group R2 of the compound of formula I is selected from the group consisting of: 1,2-ethylene; 1,3-propylene; 1,2-propylene; 1,4-butylene; 1,3-(2-hydroxy)propylene; and 1,3-(2,2-dimethyl)propylene. ### Claim 27 (depends on 25) The coating of claim 25, wherein R1 of the compound of formula I is a methyl group. ### Claim 28 (depends on 26) The coating of claim 26, wherein R1 of said compound of formula I is a methyl group. ### Claim 29 (depends on 25) The coating of claim 25, wherein the monomer mixture comprises: 0.5 to 90 wt % of the compound of formula I; 10 to 95 wt % of at least one monomer comprising ester groups; 0 to 10 wt % of at least one monomer with an acid group; and 0 to 50 wt % of at least one styrene monomer, based on the weight of the copolymer. ### Claim 30 (depends on 25) The coating of claim 25, wherein the aqueous dispersion contains an aldehyde or a ketone which enters into a condensation reaction with the copolymer during the curing. ### Claim 31 (depends on 4, 5, 25) The coating of claim 25, wherein the aqueous dispersion contains an isocyanate which enters into addition reactions with the copolymer according to claim 4 or 5 during the curing.