# US 2017/0283586 A1 · Liquid crystal polymer composition > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0283586 A1 - Document ID: US20170283586A1 - Status: Published application - Kind: A1 - Application number: 15/464,753 - Filed: 2017-03-21 - Published: 2017-10-05 - Earliest claimed: 2016-03-29 - Assignees: Ueno Fine Chemicals Industry, Ltd. - Applicants: Ueno Fine Chemicals Industry, Ltd. - Inventors: Hitoshi TSUCHIYA; Masahiro KIHARA; Masahiro FUKAZAWA - Web page: https://patentgrep.com/patent/US20170283586A1 ## CPC - C08K 5/34924: {containing cyanurate groups; Tautomers thereof} - C08G 63/065: {the hydroxy and carboxylic ester groups being bound to aromatic rings} - C08K 3/34: Silicon-containing compounds - C08K 7/14: Glass - C09K 19/3809: {Polyesters; Polyester derivatives, e.g. polyamides} - C09K 19/54: Additives having no specific mesophase {characterised by their chemical composition} - C09K 2019/521: {Inorganic solid particles} - C09K 2019/523: {Organic solid particles} - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS - C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE ## Abstract To provide a liquid crystal polymer composition whose fluidity during molding is improved without degrading the mechanical properties thereof. A liquid crystal polymer composition which contains 100 parts by weight of a liquid crystal polymer, 1 to 200 parts by weight of an inorganic filler and/or an organic filler, and 0.01 to 2 parts by weight of a melamine compound as a flow modifier. ## Claims ### Claim 1 A liquid crystal polymer composition comprising: 100 parts by weight of a liquid crystal polymer; 1 to 200 parts by weight of an inorganic filler and/or an organic filler; and 0.01 to 2 parts by weight of a melamine compound as a flow modifier. ### Claim 2 (depends on 1) The liquid crystal polymer composition according to claim 1, wherein the liquid crystal polymer is a liquid crystal polyester resin comprising repeating units represented by formulae (I) and (II): ### Claim 3 (depends on 1) The liquid crystal polymer composition according to claim 1, wherein the liquid crystal polymer is a wholly aromatic liquid crystal polyester resin composed of repeating units represented by formulae (I) and (II). ### Claim 4 (depends on 1) The liquid crystal polymer composition according to claim 1, wherein the liquid crystal polymer is a wholly aromatic liquid crystal polyester resin composed of repeating units represented by formulae (I) to (IV): wherein Ar1 and Ar2 each represent a divalent aromatic group. ### Claim 5 (depends on 4) The liquid crystal polymer composition according to claim 4, wherein Ar1 and Ar2 are one or more aromatic groups selected independently from each other, from a group consisting of aromatic groups represented by formulae (1) to (4): ### Claim 6 (depends on 4) The liquid crystal polymer composition according to claim 4, wherein Ar1 is an aromatic group represented by formulae (1) and/or (4), and Ar2 is an aromatic group represented by formulae (1) and/or (3). ### Claim 7 (depends on 4) The liquid crystal polymer composition according to claim 4, wherein Ar1 is an aromatic group represented by formula (1), and Ar2 is an aromatic group represented by formulae (1) and (3). ### Claim 8 (depends on 4) The liquid crystal polymer composition according to claim 4, wherein Ar1 is an aromatic group represented by formula (4), and Ar2 is an aromatic group represented by formula (1). ### Claim 9 (depends on 1) The liquid crystal polymer composition according to claim 1, wherein the inorganic filler and/or the organic filler are/is one or more compounds selected from a group consisting of glass fiber, silica-alumina fiber, alumina fiber, carbon fiber, aramid fiber, potassium titanate fiber, aluminum borate fiber, wollastonite, talc, mica, graphite, calcium carbonate, dolomite, clay, glass flakes, glass beads, barium sulfate, titanium oxide, and diatom earth. ### Claim 10 (depends on 1) The liquid crystal polymer composition according to claim 1, wherein the inorganic filler and/or the organic filler are/is glass fiber or talc. ### Claim 11 (depends on 1) The liquid crystal polymer composition according to claim 1, wherein the melamine compound is one or more compounds selected from a group consisting of melamine cyanurate, melamine acrylate, melamine hydrochloride, melamine sulfonate, melamine borate, and melamine pyrophosphate. ### Claim 12 (depends on 1) The liquid crystal polymer composition according to claim 1, wherein the melamine compound is melamine cyanurate. ### Claim 13 (depends on 1) A molded article composed of the liquid crystal polymer composition according to claim 1. ### Claim 14 A process for improving the fluidity of a liquid crystal polymer, which uses 1 to 200 parts by weight of an inorganic filler and/or an organic filler and 0.01 to 2 parts by weight of a melamine compound as a flow modifier, relative to 100 parts by weight of the liquid crystal polymer.