# US 8,772,407 B2 · One component polysiloxane coating compositions and related coated substrates > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,772,407 B2 - Document ID: US8772407B2 - Status: Granted - Kind: B2 - Application number: 12/211,276 - Filed: 2008-09-16 - Published: 2009-03-19 - Granted: 2014-07-08 - Earliest claimed: 2007-09-17 - Assignees: PPG Industries Ohio, Inc. - Applicants: Norman R. Mowrer - Inventors: Norman R. Mowrer - Web page: https://patentgrep.com/patent/US8772407B2 ## CPC - 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 Disclosed are one-component low temperature, moisture curable, storage stable coating compositions that include a silanol-functional silicone; an alkoxy-functional silicone; a flexibilizer comprising a reaction product of two or more reactants; and a curing agent selected from amines, aminosilanes, ketimines, aldimines, and combinations thereof. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and methods for coating substrates with such compositions. ## Claims ### Claim 1 A coating composition comprising: (a) a silanol-functional silicone having a weight average molecular weight in the range of from 200 to 7,000; (b) an alkoxy-functional silicone having a weight average molecular weight in the range of from 800 to 2,500; (c) a flexibilizer comprising a reaction product of reactants comprising a hydroxyl functional resin and an isocyanate-functional silane; (d) a curing agent; and (e) an organo tin material comprising a dilaurate and/or a diacetate to accelerate cure of the composition at ambient temperature, wherein the composition is a one-component, storage stable composition. ### Claim 2 (depends on 1) The coating composition of claim 1, wherein the silanol-functional silicone comprises a compound represented by the general formula: (a) each R1 is independently selected from the group consisting of a hydroxy group, an alkyl group having up to six carbon atoms, and an aryl group having up to six carbon atoms; and (b) each R2 is independently selected from the group consisting of a hydrogen, an alkyl group having up to six carbon atoms, and an aryl group having up to six carbon atoms, wherein at least one of R1 and R2 is selected such that the compound comprises a silanol group. ### Claim 3 (depends on 2) The coating composition of claim 2, wherein the silanol-functional silicone comprises phenyl groups, methyl groups, and combinations thereof. ### Claim 4 (depends on 1) The coating composition of claim 1, wherein the alkoxy-functional silicone comprises a compound represented by the general formula: (a) each R3 is independently selected from the group consisting of an alkyl group having up to six carbon atoms, an aryl group having up to six carbon atoms, and an alkoxy group having up to about six carbon atoms; and (b) each R4 is independently selected from the group consisting of an alkyl group having up to six carbon atoms and an aryl group having up to six carbon atoms. ### Claim 5 (depends on 1) The coating composition of claim 1, wherein the flexibilizer comprises a polymer comprising an alkoxysilane terminal unit. ### Claim 6 (depends on 1) The coating composition of claim 1, wherein the flexibilizer is present from 0.5 to 30 percent by weight based on the total weight of the coating composition. ### Claim 7 (depends on 1) The coating composition of claim 1, wherein the curing agent comprises an aminosilane comprising a compound having the general formula: Y—Si—(O—X)3, wherein: (a) each X is independently selected from an alkyl group, a hydroxyalkyl group, an alkoxyalkyl group and a hydroxyalkoxyalkyl group, each group containing less than six carbon atoms, and (b) Y is H(HNR)C wherein: (i) c is an integer of from 1 to 6; and (ii) R is a difunctional organic radical independently selected from the group consisting of an aryl group, an alkyl group, a dialkylaryl group, an alkoxyalkyl group, and a cycloalkyl group, and where R can vary within each Y molecule. ### Claim 8 (depends on 1) The coating composition of claim 1, further comprising a moisture scavenger. ### Claim 9 (depends on 1) A substrate at least partially coated with a coating deposited from the coating composition of claim 1. ### Claim 10 A coating composition comprising: (a) a silanol-functional silicone having a weight average molecular weight in the range of from 200 to 7,000; (b) an alkoxy-functional silicone having a weight average molecular weight in the range of from 800 to 2,500; (c) a flexibilizer comprising a reaction product of reactants comprising a hydroxyl functional acrylic resin and an isocyanate-functional silane; (d) a curing agent; and (e) an organo tin material comprising a dilaurate and/or a diacetate to accelerate cure of the composition at ambient temperature, wherein the composition is a one-component, storage stable composition. ### Claim 11 (depends on 10) A substrate at least partially coated with a coating deposited from the coating composition of claim 10.