# US 4,396,661 A · Refractory coated and dielectric coated flame resistant insulating fabric composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,396,661 A - Document ID: US4396661A - Status: Granted - Kind: A - Application number: 06/338,852 - Filed: 1982-01-12 - Granted: 1983-08-02 - Earliest claimed: 1981-08-20 - Assignees: Subtex, Inc. - Inventors: Stephen George; Thomas H. George - Web page: https://patentgrep.com/patent/US4396661A ## CPC - C04B 41/009: {characterised by the material treated} - C04B 41/5025: {with ceramic materials (copper oxide or solid solutions thereof C04B41/5074)} - D04H 11/00: Non-woven pile fabrics (layered products forming non-woven pile fabrics B32B) - D06M 10/06: Inorganic compounds or elements - D06N 7/0042: {Conductive or insulating layers; Antistatic layers; Flame-proof layers} - Y10T 428/23943: Flock surface - Y10T 428/28: Web or sheet containing structurally defined element or component and having an adhesive outermost layer - Y10T 428/2848: Three or more layers - Y10T 442/2475: Coating or impregnation is electrical insulation-providing, -improving, or -increasing, or conductivity-reducing - 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 - D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B) - D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS - D06N: WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Fabric base compositions having a refractory coating on one side and a coating containing finely divided dielectric on the other side exhibit superior flame and heat resistance and superior dielectric properties. ## Claims ### Claim 1 A heat resistant, flexible refractory insulating composition comprising: (a) a base fabric, (b) a refractory coating comprising refractory materials, said refractory coating formed on one side of said fabric and said refractory materials being capable of fusing with the base fabric at elevated temperatures; and (c) a dielectric coating comprising a finely divided dielectric which is mica, zirconium oxide or aluminum oxide, the zirconium oxide and aluminum oxide additionally containing a titanate of bismuth, calcium, magnesium, strontium, lead, zinc-magnesium or mixtures thereof, said dielectric coating formed on the other side of said fabric. ### Claim 2 (depends on 1) A composition according to claim 1 wherein said dielectric coating is formed on said base fabric by plasma spraying. ### Claim 3 (depends on 1) A composition according to claim 1 wherein said dielectric coating additionally comprises a resinous binder. ### Claim 4 (depends on 2) A composition according to claim 2 including the following additional element: (d) a flock coating comprising flock fibers and an adhesive coating, said flock coating formed on said dielectric coating and said adhesive coating securing said flock fibers to said dielectric coating with one end of said fibers upstanding from said adhesive coating. ### Claim 5 (depends on 3) A composition according to claim 3 including the following additional element: (e) a flock coating comprising flock fibers, said flock coating formed on said dielectric coating and said resinous binder securing said flock fibers to said dielectric coating with one end of said fibers upstanding from said resinous binder. ### Claim 6 (depends on 3, 5) A composition according to claims 3 or 5 wherein the resinous binder is epoxy resin, urethane resin or acrylic resin. ### Claim 7 (depends on 3, 5) A composition according to claims 3 or 5 wherein the resinous binder is polyimide resin, polyamideimide resin or polyester resin. ### Claim 8 (depends on 4, 5) A composition according to claims 4 or 5 wherein the flock fibers are cotton, polyester, nylon, rayon or mixtures thereof. ### Claim 9 (depends on 1) A composition according to claim 1 wherein said refractory coating is formed on said base fabric by plasma spraying. ### Claim 10 (depends on 1) A composition according to claim 1 wherein said refractory coating additionally comprises a bonding agent and said composition includes the following additional element: (f) a saturation coating formed on the outside surface of said refractory coating, said bonding agent and said saturation coating being an inorganic composition comprising colloidal silica, monoaluminum phosphate and aluminum chlorohydrate. ### Claim 11 (depends on 1) A composition according to claim 1 wherein said refractory coating additionally comprises a bonding agent, said bonding agent being acrylic latex resin or acrylic latex resin and colloidal silica. ### Claim 12 (depends on 1, 5) A composition according to claims 1 or 5 including the following additional element: (g) an abrasion resistant polymeric coating formed on the outside surface of said refractory coating. ### Claim 13 (depends on 1, 4, 5) A composition according to claims 1, 4 or 5 including the following additional element: (h) an adhesive applied to the outside surface of said dielectric coating. ### Claim 14 (depends on 12) A composition according to claim 12 wherein said refractory coating additionally comprises a bonding agent, said bonding agent and said polymeric coating being polyimide resin, polyamideimide resin or polyester resin. ### Claim 15 (depends on 1) A composition according to claim 1 wherein the base fabric is a knitted fabric. ### Claim 16 (depends on 1) A composition according to claim 1 wherein the fabric is a woven fabric or a non-woven fabric. ### Claim 17 (depends on 15, 16) A composition according to claims 15 or 16 wherein the base fabric is made from fiberglass yarn, Kevlar yarn or a mixture of fiberglass yarn and Kevlar yarn. ### Claim 18 (depends on 1) A composition according to claim 1 wherein the refractory materials are alumina, zirconia, calcium silicate, silicon dioxide or mixtures thereof. ### Claim 19 (depends on 1) A composition according to claim 1 wherein the refractory materials are silicon carbide or thermal carbon black. ### Claim 20 (depends on 1) A composition according to claim 1 wherein said base fabric is made from fiberglass yarn and said refractory coating comprises polyamideimide resin, alumina silica fiber, zirconium oxide and aluminum hydrate. ### Claim 21 (depends on 15, 16) A composition according to claims 15 or 16 wherein the base fabric is made from quartz yarn or a mixture of quartz yarn and Kevlar yarn. ### Claim 22 (depends on 1) A composition according to claim 1 wherein the base fabric is a non-woven web or paper of alumina silica fibers, alumina fibers, zirconia fibers or mixtures thereof.