# US 8,772,373 B2 · Coating composition, coating and an object coated with the coating composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,772,373 B2 - Document ID: US8772373B2 - Status: Granted - Kind: B2 - Application number: 14/022,977 - Filed: 2013-09-10 - Published: 2014-01-09 - Granted: 2014-07-08 - Earliest claimed: 2004-08-10 - Assignees: Dsm IP Assets B.V. - Applicants: DSM IP Assets B.V. - Inventors: Edwin Currie; Jens Thies; Paul Holmes - Web page: https://patentgrep.com/patent/US8772373B2 ## CPC - C09D 7/62: modified by treatment with other compounds - C09D 1/00: Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances - C08K 3/22: of metals - C08K 9/08: Ingredients agglomerated by treatment with a binding agent - C08L 51/10: grafted on to inorganic materials - Y10T 428/2982: Particulate matter [e.g., sphere, flake, etc.] - 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) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A process for producing a coating composition includes separately chemically grafting particles with compounds having reactive groups and compounds having hydrophilic polymer chains. The hydrophilic polymer chains dissolve in water at least one temperature between 0 and 100° C. The reactive groups may react with the substrate and or react with one another to form a cross-linked coating, comprising the particles. A process for forming a coating on a substrate is also provided. ## Claims ### Claim 1 A coating composition comprising inorganic particles grafted with: (a) reactive groups, and (b) hydrophilic polymer chains comprising at least an average of 5 monomer units of ethylene oxide or vinyl pyrrolidone. ### Claim 2 (depends on 1) The coating composition of claim 1, wherein the reactive groups are capable of reaction with a substrate on which the coating composition is coated and/or with one another to form a cross-linked phase. ### Claim 3 (depends on 1) The coating composition of claim 1, wherein the average smallest diameter of the inorganic particles is below 10 microns. ### Claim 4 (depends on 1) The coating composition of claim 1, wherein the inorganic particles comprise SiO2, TiO2, ZnO2, SnO2, Am—SnO2, ZrO2, Sb—SnO2, Al2O3, Au or Ag. ### Claim 5 (depends on 1) The coating composition of claim 1, wherein the hydrophilic polymer chains comprise monomer units of ethylene oxide. ### Claim 6 (depends on 1) The coating composition of claim 1, further comprising a compound that increases adhesion of the coating to a substrate. ### Claim 7 (depends on 1) The coating composition of claim 1, further comprising one or more species that diffuse out of the coating composition during usage. ### Claim 8 (depends on 1) The coating composition of claim 1, wherein at least 20% of the hydrophilic polymer chains do not comprise a reactive group. ### Claim 9 (depends on 1) The coating composition of claim 1, wherein at least 80% of the hydrophilic polymer chains do not comprise a reactive group. ### Claim 10 (depends on 1) The coating composition of claim 1, further comprising a reactive diluent. ### Claim 11 (depends on 1) The coating composition of claim 1, wherein the coating composition is bioreactive. ### Claim 12 (depends on 1) The coating composition of claim 1, further comprising an initiator. ### Claim 13 (depends on 8) The coating composition of claim 8, further comprising an initiator. ### Claim 14 (depends on 9) The coating composition of claim 9, further comprising an initiator. ### Claim 15 (depends on 10) The coating composition of claim 10, further comprising an initiator. ### Claim 16 (depends on 8) The coating composition of claim 8, further comprising a reactive diluent and an initiator. ### Claim 17 (depends on 9) The coating composition of claim 9, further comprising a reactive diluent and an initiator. ### Claim 18 (depends on 1) A method of coating a substrate comprising applying the coating composition of claim 1 on a substrate and curing the coating composition on the substrate. ### Claim 19 (depends on 1) A coated substrate comprising a substrate and a coating composition of claim 1 cured on the substrate. ### Claim 20 (depends on 19) An article comprising the coated substrate of claim 19.