# US 10,480,121 B2 · Sheet-like article > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,121 B2 - Document ID: US10480121B2 - Status: Granted - Kind: B2 - Application number: 15/519,965 - Filed: 2015-10-14 - Published: 2017-12-07 - Granted: 2019-11-19 - Earliest claimed: 2014-10-24 - Assignees: Toray Industries, Inc. - Applicants: Toray Industries, Inc. - Inventors: Shunichiro Nakai; Hisashi Murahara; Yukihiro Matsuzaki; Makoto Nishimura - Web page: https://patentgrep.com/patent/US10480121B2 ## CPC - D06N 3/14: with polyurethanes - C08G 18/0823: {containing carboxylate salt groups or groups forming them} - C08G 18/12: using two or more compounds having active hydrogen in the first polymerisation step - C08G 18/3206: {aliphatic} - C08G 18/4202: {Two or more polyesters of different physical or chemical nature (C08G18/44 takes precedence)} - C08G 18/4277: {Caprolactone and/or substituted caprolactone} - C08G 18/44: Polycarbonates - C08G 18/664: {with compounds of group C08G18/3203} - C08G 18/73: acyclic - C08G 18/7621: {being toluene diisocyanate including isomer mixtures} - C08G 18/7671: {containing only one alkylene bisphenyl group} - C08J 5/046: {with synthetic macromolecular fibrous material} - D06M 15/564: Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them - C08J 2375/04: Polyurethanes - C08J 2467/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08J2467/06 takes precedence) - 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 - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS ## Abstract A sheet like article produced from a polyurethane resin has a carbonate group and an oxycarbonyl group as ester groups and has uniform, elegant surface quality, a flexible, highly crease recoverable texture, and high resistance to light and hydrolysis, and also provided is a production method therefore. The sheet like article is produced by adding, as a binder, a polyurethane resin that meets requirements (I) and (II) to a fibrous base material formed mainly of ultrafine fibers: (I) a polyurethane resin such that the polyurethane resin contains, in its interior, an oxycarbonyl group and a carbonate group as ester groups; (II) a polyurethane resin such that the sum of the content of the urethane group and the content of the urea group in the polyurethane resin is 7.0 to 11.0 mass %. ## Claims ### Claim 1 A sheet shaped article comprising a fibrous base material formed mainly of ultrafine fibers and impregnated with, as a binder, a polyurethane resin that meets requirements (I) and (II) below: (I) the polyurethane resin contains an oxycarbonyl group and a carbonate group as ester groups in an interior portion of a polymer chain forming the polyurethane resin, and (II) the polyurethane resin contains a urethane group and, optionally, a urea group with a total content of 7.0 to 11.0 mass %. ### Claim 2 (depends on 1) The sheet shaped article as set forth in claim 1, having a compressibility of 13% or more and 20% or less and a compression modulus of 55% or more and 75% or less. ### Claim 3 (depends on 1) The sheet shaped article as set forth in claim 1, wherein a ratio by number between the oxycarbonyl group and the carbonate group in the polymeric polyol present in the polyurethane resin is 5:95 to 95:5. ### Claim 4 (depends on 1) The sheet shaped article as set forth in claim 1, wherein 10 mass % to 100 mass % of the polymeric polyol molecules present in the polyurethane resin are accounted for by polyol molecules having an oxycarbonyl group and a carbonate group. ### Claim 5 (depends on 1) The sheet shaped article as set forth in claim 1, wherein the polyurethane resin has a hydrophilic group. ### Claim 6 (depends on 1) The sheet shaped article as set forth in claim 1, comprising a content of 1.0 to 4.0 mass % of the urea group, when present in the polyurethane resin. ### Claim 7 (depends on 1) The sheet shaped article as set forth in claim 1, wherein the organic polyisocyanate component of the polyurethane resin is at least one type of polyisocyanate selected from the group consisting of an aromatic polyisocyanate containing 8 to 26 carbon atoms, an aliphatic polyisocyanate containing 4 to 22 carbon atoms, and an alicyclic polyisocyanate containing 8 to 18 carbon atoms. ### Claim 8 (depends on 1) The sheet shaped article as set forth in claim 1, wherein the organic polyisocyanate component of the polyurethane resin is an aromatic polyisocyanate. ### Claim 9 (depends on 1) The sheet shaped article as set forth in claim 1, wherein the polymeric polyol present in the polyurethane resin contains an amorphous polycarbonate polyol having a melting point of 20° C. or less. ### Claim 10 (depends on 1) The sheet shaped article as set forth in claim 1, wherein the polymeric polyol present in the polyurethane resin contains a polycarbonate polyol in the form of a copolymer of two or more types of polyhydric alcohol having different carbon backbones. ### Claim 11 (depends on 1) The sheet shaped article as set forth in claim 1, wherein the polyurethane resin has at least one reactive group selected from the group consisting of a carboxyl group, hydroxyl group, primary amino group, and secondary amino group and further contains a crosslinking agent that is at least one crosslinking agent selected from the group consisting of an isocyanate compound, block isocyanate compound, melamine compound, oxazoline compound, carbodiimide compound, aziridine compound, epoxy compound, and hydrazine compound and that is reactive to the reactive group contained in the polyurethane resin. ### Claim 12 (depends on 1) The sheet shaped article as set forth in claim 1, wherein the polyurethane resin is produced by coagulating an aqueous dispersion of polyurethane.