# US 10,370,563 B2 · Weather resistant matte silicone coating and preparation method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,370,563 B2 - Document ID: US10370563B2 - Status: Granted - Kind: B2 - Application number: 15/541,425 - Filed: 2015-11-11 - Published: 2018-01-04 - Granted: 2019-08-06 - Earliest claimed: 2015-01-08 - Assignees: Chengdu Taly Technology Co., Ltd.; China Academy of Civil Aviation Science and Technology - Applicants: Chengdu Taly Technology Co., Ltd; China Academy of Civil Aviation Science and Technology - Inventors: Yunfeng Tao; Yajie Shi; Xianyin Zhang; Ping Liu; Hongyu Yao; Hui Fang; Hong Liu - Web page: https://patentgrep.com/patent/US10370563B2 ## CPC - C09D 183/06: containing silicon bound to oxygen-containing groups (C09D183/12 takes precedence) - C09D 183/04: Polysiloxanes - 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) ## Abstract A weather resistant matte silicone coating special for EMAS, comprising: 80˜130 parts by weight of α,ω-dihydroxypolydimethylsiloxane; 0.5˜10 parts by weight of a linear polydimethylsiloxane with terminal hydroxyl group; 1˜10 parts by weight of fumed silica; 10˜50 parts by weight of precipitated silica; 1˜5 parts by weight of color masterbatch; 0.9˜5 parts by weight of organotin chelate catalyst; crosslinking agent, comprising 1.5˜7 parts by weight of methyltri(methylethylketoximino)silane, 1.5˜7 parts by weight of vinyltri(methylethylketoximino)silane, and 1˜7 parts by weight of aminopropyltriethoxysilane; 1.5˜6 parts by weight of delustering agent; and 250˜350 parts by weight of a solvent. The coating has the properties of low viscosity, high flow, relatively fast curing, moderate strength, good adhesion, good mattness, being environmentally friendly and the like. ## Claims ### Claim 1 A weather resistant matte silicone coating special for EMAS, comprising: 80-130 parts by weight of α,ω-dihydroxypolydimethylsiloxane; 0.5-10 parts by weight of linear polydimethylsiloxane with terminal hydroxyl group; 1-10 parts by weight of fumed silica; 10-50 parts by weight of precipitated silica; 1-5 parts by weight of color masterbatch; 0.9-5 parts by weight of organotin chelate catalyst; crosslinking agent, comprising 1.5-7 parts by weight of methyltri(methylethylketoximino)silane, 1.5-7 parts by weight of vinyltri(methylethylketoximino)silane, and 1-7 parts by weight of aminopropyltriethoxysilane; 1.5-6 parts by weight of delustering agent; and 250-350 parts by weight of solvent. ### Claim 2 (depends on 1) The weather resistant matte silicone coating as claimed in claim 1, wherein the α,ω-dihydroxypolydimethylsiloxane is a low-viscosity α,ω-dihydroxypolydimethylsiloxane having a number-average molecular weight range of 26,000-150,000 and a viscosity range of 1,000-150,000 cP at 25° C. ### Claim 3 (depends on 1) The weather resistant matte silicone coating as claimed in claim 1, wherein the linear polydimethylsiloxane with terminal hydroxyl group has a number-average molecular weight range of 2,000-139,000 and a viscosity range of 20-10,000 cP at 25° C. ### Claim 4 (depends on 1) The weather resistant matte silicone coating as claimed in claim 1, wherein the catalyst is selected from dibutyltin dilaurate, dioctyltin dilaurate, or stannous octoate. ### Claim 5 (depends on 1) The weather resistant matte silicone coating as claimed in claim 1, wherein the solvent is a hydrocarbon or a petroleum ether solvent; and/or the color masterbatch is carbon black. ### Claim 6 (depends on 1) The weather resistant matte silicone coating as claimed in claim 1, wherein the delustering agent is polyether-modified amine wax silane; and/or the solid content of the coating is 25-40 wt %; and/or the viscosity (25° C.) of the coating is from 500 mPa·s to 900 mPa·s. ### Claim 7 (depends on 1) A method for preparing the weather resistant matte silicone coating as claimed in claim 1, wherein the method comprises the steps of: mixing and milling α,ω-dihydroxypolydimethylsiloxane, linear polydimethylsiloxane with terminal hydroxyl group, fumed silica, and precipitated silica; stirring and drying under vacuum at a temperature of 90-160° C.; adding the color masterbatch, catalyst, crosslinking agent and delustering agent at a temperature of 40-60° C. and stirring, and further adding the solvent and stirring to obtain a product. ### Claim 8 (depends on 1) A method for preparing a cured coating of the weather resistant matte silicone coating as claimed in claim 1, wherein the method comprises the steps of: mixing and milling α,ω-dihydroxypolydimethylsiloxane, linear polydimethylsiloxane with terminal hydroxyl group, fumed silica, and precipitated silica; stirring and drying under vacuum at a temperature of 90-160° C.; adding the color masterbatch, catalyst, crosslinking agent and delustering agent at a temperature of 40-60° C. and stirring; and further adding the solvent and stirring; and then curing to obtain a product of the cured coating. ### Claim 9 (depends on 1) The cured coating obtained by curing the weather resistant matte coating claimed in claim 1, wherein the tensile strength of the cured coating is 1.5 MPa-2.0 MPa; and/or the elongation of the cured coating is greater than 150%. ### Claim 10 (depends on 1) The weather resistant matte silicone coating as claimed in claim 1, comprising: 90-120 parts by weight of α,ω-dihydroxypolydimethylsiloxane; 0.8-7 parts by weight of linear polydimethylsiloxane with terminal hydroxyl group; 2-7 parts by weight of fumed silica; 13-40 parts by weight of precipitated silica; 1.5-2.5 parts by weight of color masterbatch; 1-3 parts by weight of organotin chelate catalyst; crosslinking agent, comprising 2-6 parts by weight of methyltri(methylethylketoximino)silane, 2-6 parts by weight of vinyltri(methylethylketoximino)silane, and 2-6 parts by weight of aminopropyltriethoxysilane; 2-4 parts by weight of delustering agent; and 280-320 parts by weight of solvent. ### Claim 11 (depends on 1) The weather resistant matte silicone coating as claimed in claim 1, comprising: 95-115 parts by weight of α,ω-dihydroxypolydimethylsiloxane; 1-3 parts by weight of linear polydimethylsiloxane with terminal hydroxyl group; 3-5 parts by weight of fumed silica; 15-30 parts by weight of precipitated silica; 1.5-2.5 parts by weight of color masterbatch; 1-3 parts by weight of organotin chelate catalyst; crosslinking agent, comprising 3-5 parts by weight of methyltri(methylethylketoximino)silane, 3-5 parts by weight of vinyltri(methylethylketoximino)silane, and 3-5 parts by weight of aminopropyltriethoxysilane; 2-4 parts by weight of delustering agent; and 280-320 parts by weight of solvent. ### Claim 12 (depends on 5) The weather resistant matte silicone coating as claimed in claim 5, wherein the solvent is selected from the group consisting of 120# gasoline, 200# gasoline, and 90-120# petroleum ether.