# US 8,771,784 B2 · Method for producing coating having desired gloss value > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,771,784 B2 - Document ID: US8771784B2 - Status: Granted - Kind: B2 - Application number: 13/377,613 - Filed: 2010-05-05 - Published: 2012-04-19 - Granted: 2014-07-08 - Earliest claimed: 2009-07-30 - Assignees: Axalta Coating Systems IP Co., LLC - Applicants: Ayumu Yokoyama; Rajesh Gopalan Saliya; Sheau-Hwa Ma - Inventors: Ayumu Yokoyama; Rajesh Gopalan Saliya; Sheau-Hwa Ma - Web page: https://patentgrep.com/patent/US8771784B2 ## CPC - G01N 21/57: Measuring gloss - B05D 5/02: to obtain a matt or rough surface - B05D 5/061: {Special surface effect} - C09D 7/42: Gloss-reducing agents - C09D 7/80: Processes for incorporating ingredients - B05D 5/063: {Reflective effect (B05D5/067 takes precedence)} - G01J 3/504: {Goniometric colour measurements, for example measurements of metallic or flake based paints} - G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q) - B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02) - 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) - G01J: MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) ## Abstract The present invention is directed to a method for producing a coating having a desired gloss value on a substrate. This invention is also directed to method for producing a predicted gloss value of a coating on a substrate. This invention is further directed to a method of using a matting agent comprising components derived from renewable resources. ## Claims ### Claim 1 A method for producing a coating having a target gloss value on a substrate, said coating is formed from a coating composition and a matting agent, said method comprising steps of: a) obtaining a gloss-mixing ratio correlation data system that comprises correlations of gloss values to mixing ratios of said matting agent and said coating composition; b) generating a target mixing ratio of said matting agent and said coating composition according to said target gloss value and said gloss-mixing ratio correlation data system; c) producing a coating mixture comprising said coating composition and said matting agent having said target mixing ratio; and d) producing said coating by applying said coating mixture over said substrate, wherein said gloss-mixing ratio correlation data system is generated by a fitting process comprising the steps of: i) producing a first coating mixture comprising said coating composition and said matting went according to a first mixing ratio x1, applying the first coating mixture over a first substrate and allowing the first coating mixture to dry forming a dry first coating, and measuring a first gloss value y1 of the dry first coating; ii) producing a second coating mixture comprising said coating composition and said matting agent according to a second mixing ratio x2, applying the second coating mixture over a second substrate and allowing the second coating mixture to dry forming a dry second coating, and measuring a second gloss value y2 of the dry second coating; iii) repeating the steps i) and ii) above for subsequent mixing ratios x3 through xn, and measuring subsequent gloss values y3 through yn; and iv) generating said gloss-mixing ratio correlation data system by fitting the mixing ratios) x1 through xn and the gloss values y1 through yn; wherein, n is an integer equal to or greater than 3, and said gloss-mixing ratio correlation data system has a correlation coefficient R2 equal to or greater than 0.7, and wherein said gloss-mixing ratio correlation data system is expressed as a 2-degree polynomial fitting equation: y=a1x2+a2x+a3 (1) wherein is a gloss value, x is a mixing ratio a1, a2 and a3 are constants determined through fitting said mixing ratios x1 through xn and said gloss values y1 through yn. ### Claim 2 (depends on 1) The method of claim 1, wherein said gloss-mixing ratio correlation data system is a gloss-mixing ratio plot chart in that said mixing ratios x1 through xn and said gloss values y1 through yn are plotted on an x-y chart and fitted to a fitting curve. ### Claim 3 (depends on 2) The method of claim 2, wherein said fitting curve is displayed on said x-y chart. ### Claim 4 (depends on 1) The method of claim 1, wherein said gloss-mixing ratio correlation data system has a correlation coefficient R2 equal to or greater than 0.8. ### Claim 5 (depends on 1) The method claim 1, wherein said mixing ratios are selected from weight mixing ratios, volume mixing ratios, or a combination thereof. ### Claim 6 (depends on 1) The method claim 1, wherein said mixing ratios are volume mixing ratios. ### Claim 7 (depends on 1) he method of claim 1 further comprising the step of curing said coating. ### Claim 8 (depends on 1) The method of claim 1, wherein said coating composition is selected from a solvent borne coating composition, a waterborne coating composition, or a powder coating composition. ### Claim 9 (depends on 1) The method of claim 1, wherein said coating composition is selected from a two-pack coating composition or a one-pack coating composition. ### Claim 10 (depends on 1) The method of claim 1, wherein said coating composition is selected from a chemical curable coating composition, a radiation curable coating composition, a chemical and radiation dual cure coating composition, or a lacquer coating composition. ### Claim 11 (depends on 1) The method of claim 1, wherein said substrate is selected from metal, wood, plastic, composite, or a combination thereof. ### Claim 12 (depends on 1) The method of claim 1, wherein said substrate is selected from a vehicle body, vehicle body part, or a combination thereof. ### Claim 13 (depends on 1) The method of claim 1, wherein said matting agent comprises silica. ### Claim 14 (depends on 1) The method of claim 1, wherein said matting agent comprises a polytrimethylene ether glycol having a Mn (number average molecular weight) in a range of from 500 to 10,000. ### Claim 15 (depends on 14) The method of claim 14, wherein said polytrimethylene ether glycol is polymerized from bio-derived 1,3-propanediol. ### Claim 16 A method for producing a predicted gloss value of a coating on a substrate, said coating is formed from a coating composition and a matting agent, said method comprising steps of: a) obtaining a gloss-mixing ratio correlation data system that comprises correlations of gloss values to mixing ratios of said matting agent and said coating composition; b) providing a target mixing ratio; c) producing said predicted gloss value according to said gloss-mixing ratio correlation data system and said target mixing ratio; and d) outputting said predicted gloss value to an output device, wherein said gloss-mixing ratio correlation data system is generated by a fitting process comprising the steps of: i) producing a first coating mixture comprising said coating composition and said matting agent according to a first mixing ratio x1, applying in the first coating mixture over a first substrate and allowing the first coating mixture to dry forming a dry first coating, and measuring a first gloss value y1 of the dry first coating; ii) producing a second coating mixture comprising said coating composition and said matting agent according to a second mixing ratio x2, applving the second coating mixture over a second substrate and allowing the second coating mixture to dry forming a dry second coating, and measuring a second gloss value y2 of the dry second coating; iii) repeating the steps i) and ii) above for subsequent mixing ratios x3 through xn and measuring subsequent gloss values y3 through yn; and iv) generating said gloss-mixing ratio correlation data system by fitting he mixing ratios x1 through xn and the gloss values y1 through yn; wherein, n is an integer equal to or greater than 3, and said gloss-mixing ratio correlation data system has a correlation coefficient R2 equal to or greater than 0.7, wherein said gloss-mixing ratio correlation data system is expressed as a 2-degree polynomial fitting equation: y=a1x2+a2x+a3 (1) wherein is a y loss value x is a mixin ratio a1, a2 and a3 are constants determined through fitting said mixing ratios x1 through xn and said gloss values y1 through yn. ### Claim 17 (depends on 16) The method of claim 16, wherein said gloss-mixing ratio correlation data system is a gloss-mixing ratio plot chart in that said mixing ratios x1 through xn and said gloss values y1 through yn are plotted on an x-y chart and fitted to a fitting curve. ### Claim 18 (depends on 17) The method of claim 17, wherein said fitting curve is displayed on said x-y chart. ### Claim 19 (depends on 16) The method of claim 16, wherein said gloss-mixing ratio correlation data system has a correlation coefficient R2 equal to or greater than 0.8. ### Claim 20 (depends on 16) The method claim 16, wherein said mixing ratios are selected from volume mixing ratios, weight mixing ratios, or a combination thereof. ### Claim 21 (depends on 16) The method claim 16, wherein said mixing ratios are volume mixing ratios.