# US 2010/0168282 A1 · Dispersion comprising inorganic particles, water, and at least one polymeric additive > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0168282 A1 - Document ID: US20100168282A1 - Status: Published application - Kind: A1 - Application number: 12/601,283 - Filed: 2008-02-04 - Published: 2010-07-01 - Earliest claimed: 2007-05-21 - Assignees: Evonik Roehm GmbH - Inventors: Patrick Becker; Gerold Schmitt; Zhengfeng Zhang; Lina Xue - Web page: https://patentgrep.com/patent/US20100168282A1 ## CPC - C04B 24/2647: {containing polyether side chains} - C04B 24/2658: {containing polyether side chains} - C04B 28/02: containing hydraulic cements other than calcium sulfates - C04B 2103/308: {Slump-loss preventing agents} - Y02W 30/91: Use of waste materials as fillers for mortars or concrete - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE - Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT ## Abstract The present invention relates to a dispersion comprising inorganic particles, water and at least one water-soluble polymer, wherein the water-soluble polymer comprises repeating units derived from monomers having at least one quaternary ammonium group, repeating units derived from monomers having at least one carboxy group and repeating units derived from ester monomers which contain polyalkoxyalkylene groups and have a number average molecular weight in the range from 3000 g/mol to 10 000 g/mol. The present dispersion can, in particular, be used for producing concrete and can be processed over a very long period of time. ## Claims ### Claim 1 A dispersion comprising inorganic particles, water and at least one water-soluble polymer, wherein the water-soluble polymer comprises a repeating unit derived from a monomer having at least one quaternary ammonium group, a repeating unit derived from a monomer having at least one carboxy group and a repeating unit derived from an ester monomer which comprises a polyalkoxyalkylene group and has a molecular weight in the range from 3000 g/mol to 10 000 g/mol. ### Claim 2 (depends on 1) The dispersion according to claim 1, wherein the monomer having a quaternary ammonium group is a compound of formula (I) where R is hydrogen or methyl, X is oxygen or a group of the formula —NR*, where R* is hydrogen or an alkyl group having from 1 to 4 carbon atoms, R1 is a group which has from 4 to 30 carbon atoms and has at least one quaternary ammonium group, R2 and R3 are each, independently of one another, hydrogen or a group of the formula —COOR′, where R′ is hydrogen or a group which has from 4 to 30 carbon atoms and has at least one quaternary ammonium group. ### Claim 3 (depends on 2) The dispersion according to claim 2, wherein the monomer having a quaternary ammonium group is a (meth)acrylate or a (meth)acrylamide. ### Claim 4 (depends on 3) The dispersion according to claim 3, wherein the (meth)acrylate having a quaternary ammonium group is 2-trimethylammonioethyl methacrylate chloride (TMAEMC). ### Claim 5 (depends on 1) The dispersion according to claim 1, wherein the ester monomer comprising polyalkoxyalkylene groups is a compound of the formula (II), where R is hydrogen or methyl, R4 is an alkoxylated radical of the formula (III) where R7 and R8 are each, independently of one another, hydrogen or methyl, R9 is hydrogen or an alkyl radical having from 1 to 20 carbon atoms and n is an integer from 65 to 230, R5 and R6 are each, independently of one another, hydrogen or a group of the formula —COOR″″, where R″″ is hydrogen or an alkoxylated radical of the abovementioned formula (III). ### Claim 6 (depends on 5) The dispersion according to claim 5, wherein the ester monomer comprising polyalkoxyalkylene groups is a (meth)acrylate. ### Claim 7 (depends on 6) The dispersion according to claim 6, wherein the (meth)acrylate comprising polyalkoxyalkylene groups is a methoxypolyethylene glycol methacrylate. ### Claim 8 (depends on 1) The dispersion according to claim 1, wherein the ester monomer comprising polyalkoxyalkylene groups has a number average molecular weight in the range from 4000 g/mol to 6000 g/mol. ### Claim 9 (depends on 1) The dispersion according to claim 1, wherein the ester monomer comprising polyalkoxyalkylene groups has a polydispersity index Mw/Mn, in the range from 1.5 to 5.0. ### Claim 10 (depends on 1) The dispersion according to claim 1, wherein the monomer having at least one carboxy group is methacrylic acid. ### Claim 11 (depends on 1) The dispersion according to claim 1, wherein the water-soluble polymer comprises a repeating unit derived from a comonomer. ### Claim 12 (depends on 11) The dispersion according to claim 11, wherein the comonomer is a (meth)acrylate having from 1 to 6 carbon atoms in the alcohol radical. ### Claim 13 (depends on 12) The dispersion according to claim 12, wherein the comonomer is methyl methacrylate. ### Claim 14 (depends on 1) The dispersion according to claim 1, wherein the water-soluble polymer has a weight average molecular weight in the range from 5000 to 100 000 g/mol. ### Claim 15 (depends on 1) The dispersion according to claim 1, wherein the water-soluble polymer has a polydispersity index KIM, in the range from 1.5 to 5.0. ### Claim 16 (depends on 1) The dispersion according to claim 1, wherein the water-soluble polymer is obtained by polymerization of a monomer composition comprising from 2% by weight to 8% by weight of at least one monomer having at least one quaternary ammonium group, from 60% by weight to 85% by weight of at least one ester monomer comprising polyalkoxyalkylene groups and having a number average molecular weight in the range from 3000 g/mol to 10 000 g/mol, from 10% by weight to 20% by weight of at least one monomer having a carboxy group and from 0% by weight to 15% by weight of at least one comonomer, based on the total weight of the monomers used. ### Claim 17 (depends on 1) The dispersion according to claim 1, wherein the dispersion comprises from 1% by weight to 30% by weight of water. ### Claim 18 (depends on 1) The dispersion according to claim 1, wherein the dispersion comprises from 70% by weight to 98.99% by weight of inorganic particles. ### Claim 19 (depends on 1) The dispersion according to claim 1, wherein the dispersion comprises from 0.01% by weight to 5% by weight of water-soluble polymer. ### Claim at position 20 20-22. (canceled) ### Claim 23 (depends on 1) A process for obtaining concrete, comprising dispersing inorganic particles, water and said at least one water-soluble polymer according to claim 1. ### Claim 24 (depends on 23) The process according to claim 23, wherein a water-soluble polymer comprises repeating units derived from monomers having at least one quaternary ammonium group, repeating units derived from monomers having at least one carboxy group and repeating units derived from ester monomers which contain polyalkoxyalkylene groups and have a number average molecular weight in the range from 3000 g/mol to 10 000 g/mol for increasing the processing time of a dispersion for producing concrete