# US 2010/0166985 A1 · Aqueous dispersions of (meth)acrylic esters of polymers comprising n-hydroxyalkylated lactam units and use of (meth)acrylic esters of polymers comprising n-hydroxyalkylated lactam units > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0166985 A1 - Document ID: US20100166985A1 - Status: Published application - Kind: A1 - Application number: 12/597,175 - Filed: 2008-05-15 - Published: 2010-07-01 - Earliest claimed: 2007-05-18 - Assignees: BASF SE - Inventors: Andreas Brockmeyer; Roland Ettl; Yvonne Dieckmann; Maximilian Angel - Web page: https://patentgrep.com/patent/US20100166985A1 ## CPC - C09D 139/04: Homopolymers or copolymers of monomers containing heterocyclic rings having nitrogen as ring member - B41M 5/5254: {characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers} - C08F 220/1804: {C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate} - C09D 133/14: of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen - D21H 19/56: Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds - C08F 220/36: containing oxygen in addition to the carboxy oxygen {, e.g. 2-N-morpholinoethyl (meth)acrylate or 2-isocyanatoethyl (meth)acrylate} - D21H 17/36: Polyalkenyalcohols; Polyalkenylethers; Polyalkenylesters - D21H 17/37: Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates - D21H 19/54: Starch - 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) - B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P) - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR ## Abstract Aqueous dispersions of (meth)acrylic esters of polymers comprising N-hydroxyalkylated lactam units and obtainable by free-radically initiated emulsion polymerization, wherein monomers copolymerized are (a) styrene, acrylonitrile, methacrylonitrile and/or methyl methacrylate, (b) at least one C1 to C18 alkyl acrylate and/or at least one C2 to C18 alkyl methacrylate, (c) at least one acrylic ester of an N-hydroxyalkylated lactam and/or at least one methacrylic ester of an N-hydroxyalkylated lactam, and (d) if appropriate, other ethylenically unsaturated monomers, and use of these aqueous dispersions and/or of polymers which comprise in copolymerized form at least one acrylic ester of an N-hydroxyalkylated lactam and/or at least one methacrylic ester of an N-hydroxyalkylated lactam for treating the surface of paper and of paper products, and also the inkjet papers obtainable accordingly. ## Claims ### Claim 1 An aqueous dispersion of (meth)acrylic esters of polymers comprising N-hydroxyalkylated lactam units, wherein the aqueous dispersion is obtained by free-radically initiated emulsion polymerization of (meth)acrylic esters of N-hydroxyalkylated lactams and other ethylenically unsaturated monomers, wherein monomers copolymerized comprise (a) at least one of styrene, acrylonitrile, methacrylonitrile and methyl methacrylate, (b) at least one of C1 to C18 alkyl acrylate and C2 to C18 alkyl methacrylate, (c) at least one of acrylic ester of an N-hydroxyalkylated lactam and methacrylic ester of an N-hydroxyalkylated lactam, and (d) optionally, other ethylenically unsaturated monomers. ### Claim 2 (depends on 1) The aqueous dispersion according to claim 1, wherein the monomers copolymerized comprise (a) at least one of styrene, methyl methacrylate and acrylonitrile, (b) at least one of C1 to C10 alkyl acrylate and C2 to C10 alkyl methacrylate, (c) at least one of pyrrolidonoethyl acrylate and pyrrolidonoethyl methacrylate, and (d) optionally, other ethylenically unsaturated monomers. ### Claim 3 (depends on 1) The aqueous dispersion according to claim 1, wherein the monomers copolymerized have (a) 1% to 80% by weight of at least one of styrene, methyl methacrylate and acrylonitrile, (b) 1% to 70% by weight of at least one of C1 to C10 alkyl acrylate and C2 to C10 alkyl methacrylate, (c) 1% to 50% by weight of at least one of pyrrolidonoethyl acrylate and pyrrolidonoethyl methacrylate, and (d) 0% to 20% by weight of at least one other ethylenically unsaturated monomer wherein, the sum (a)+(b)+(c)+(d) is 100% by weight. ### Claim 4 (depends on 1) The aqueous dispersion according to claim 1, wherein the monomers copolymerized have (a) 20% to 70% by weight of at least one of styrene and acrylonitrile, (b) 10% to 60% by weight of at least one of C1 to C10 alkyl acrylate and C2 to C10 alkyl methacrylate, (c) 2% to 35% by weight of at least one of pyrrolidonoethyl acrylate and pyrrolidonoethyl methacrylate, and (d) 0% to 10% by weight of at least one other ethylenically unsaturated monomer wherein, the sum (a)+(b)+(c)+(d) is 100% by weight. ### Claim 5 (depends on 1) The aqueous dispersion according to claim 1, wherein the emulsion polymerization is carried out in the presence of a cationically or anionically modified starch, a degraded natural starch or a degraded cationically or anionically modified starch. ### Claim 6 (depends on 1) The aqueous dispersion according to claim 1, wherein the emulsion polymerization is carried out in the presence of an enzymatically degraded starch. ### Claim 7 (depends on 1) The aqueous dispersion according to claim 1, wherein the emulsion polymerization is carried out in the presence of an emulsifier mixture of a surfactant and an enzymatically degraded starch or a cationically or anionically modified starch. ### Claim 8 A method, comprising applying to a surface of paper an aqueous dispersion obtained by free-radically initiated emulsion polymerization of at least one of polymers comprising (a) at least one of styrene, acrylonitrile, methacrylonitrile and methyl methacrylate, (b) at least one of C1 to C18 alkyl acrylate and C2 to C18 alkyl methacrylate, (c) at least one of acrylic ester of an N-hydroxyalkylated lactam and methacrylic ester of an N-hydroxyalkylated lactam, and (d) optionally, other ethylenically unsaturated monomers, and polymers which comprise in copolymerized form at least one of acrylic ester of an N-hydroxyalkylated lactam and methacrylic ester of an N-hydroxyalkylated lactam. ### Claim 9 (depends on 8) The method according to claim 8, wherein the polymers are applied in an amount of 0.01 to 5 g/m2 to the surface of paper. ### Claim 10 (depends on 8) The method according to claim 8, wherein the aqueous dispersion is obtained by emulsion polymerization of (a) 1% to 80% by weight of at least one of styrene and acrylonitrile, (b) 1% to 70% by weight of at least one of C1 to C10 alkyl acrylate and C2 to C10 alkyl methacrylate, (c) 1% to 50% by weight of at least one of pyrrolidonoethyl acrylate and pyrrolidonoethyl methacrylate, and (d) 0% to 20% by weight of at least one other ethylenically unsaturated monomer, wherein the sum (a)+(b)+(c)+(d) is 100% by weight. ### Claim 11 (depends on 8) The method according to claim 8, wherein the aqueous solution comprises a homopolymer of (meth)acrylic esters of N-hydroxyalkylated lactam units. ### Claim 12 (depends on 8) The method according to claim 8, wherein the aqueous solution comprises a homopolymer of at least one of pyrrolidonoethyl acrylate and pyrrolidonoethyl methacrylate. ### Claim 13 (depends on 8) The method according to claim 8, wherein the aqueous solution comprises a copolymer of (i) at least one of pyrrolidonoethyl acrylate and pyrrolidonoethyl methacrylate and (ii) acrylamide. ### Claim 14 (depends on 1) An inkjet paper obtained by treating at least one surface of a paper or of a paper product with an aqueous dispersion according to claim 1 or with polymers which comprise in copolymerized form at least one of acrylic ester of an N-hydroxyalkylated lactam and methacrylic ester of an N-hydroxyalkylated lactam.