# US 2020/0399470 A1 · Liquid Crystalline Polymer Composition for Camera Modules > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0399470 A1 - Document ID: US20200399470A1 - Status: Published application - Kind: A1 - Application number: 17/012,167 - Filed: 2020-09-04 - Published: 2020-12-24 - Earliest claimed: 2015-08-17 - Assignees: Ticona LLC - Applicants: Ticona LLC - Inventors: Young Shin Kim - Web page: https://patentgrep.com/patent/US20200399470A1 ## CPC - C08L 77/12: Polyester-amides - C08K 3/30: Sulfur-, selenium- or tellurium-containing compounds - C08L 23/0884: Epoxide-containing esters - C08L 33/14: of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen - C08L 63/00: Compositions of epoxy resins; Compositions of derivatives of epoxy resins - H01B 1/122: {Ionic conductors} - H04N 23/51: Housings - H04N 23/57: Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract A polymer composition that is capable of exhibiting a unique combination of ductility (e.g., tensile elongation at break), impact strength (e.g., Charpy notched impact strength), and dimensional stability is provided. For example, the polymer composition may contain a liquid crystalline polymer in combination with an epoxy-functionalized olefin copolymer and an inorganic particulate material. ## Claims ### Claim 1 A polymer composition comprising: 100 parts by weight of at least one liquid crystalline polymer; from about 50 to about 90 parts by weight of an inorganic particulate material having a hardness value of about 2.5 or more based on the Mohs hardness scale and a median particle size of from about 0.1 to about 35 micrometers; and from about 1 to about 15 parts by weight of an epoxy-functionalized olefin copolymer. ### Claim 2 (depends on 1) The polymer composition of claim 1, wherein liquid crystalline polymers constitute from about 20 wt. % to about 80 wt. % of the polymer composition. ### Claim 3 (depends on 1) The polymer composition of claim 1, wherein the liquid crystalline polymer contains repeating units derived from terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, 4-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, hydroquinone, 4,4′-biphenol, acetaminophen, or a combination thereof. ### Claim 4 (depends on 1) The polymer composition of claim 1, wherein the inorganic particulate material includes calcium pyrophosphate, calcium sulfate, barium sulfate, or a combination thereof. ### Claim 5 (depends on 1) The polymer composition of claim 1, wherein the inorganic particulate material constitutes from about 20 wt. % to about 60 wt. % of the polymer composition and the epoxy-functionalized copolymer constitutes from about 1 wt. % to about 20 wt. % of the polymer composition. ### Claim 6 (depends on 1) The polymer composition of claim 1 wherein the epoxy-functionalized olefin copolymer contains an ethylene monomeric unit. ### Claim 7 (depends on 1) The polymer composition of claim 1, wherein the epoxy-functionalized olefin copolymer contains an epoxy-functional (meth)acrylic monomeric component. ### Claim 8 (depends on 7) The polymer composition of claim 7, wherein the epoxy-functional (meth)acrylic monomeric component is derived from glycidyl acrylate, glycidyl methacrylate, or a combination thereof. ### Claim 9 (depends on 7) The polymer composition of claim 7, wherein the epoxy-functional (meth)acrylic monomeric unit constitutes from about 1 wt. % to about 20 wt. % of the copolymer. ### Claim 10 (depends on 1) The polymer composition of claim 1, wherein the epoxy-functionalized olefin copolymer contains a (meth)acrylic monomeric unit that is not epoxy-functional. ### Claim 11 (depends on 1) The polymer composition of claim 1, wherein the epoxy-functionalized olefin copolymer exhibits a melt flow rate of from about 1 to about 30 grams per 10 minutes, as determined in accordance with ASTM D1238-13 at a load of 2.16 kg and temperature of 190° C. ### Claim 12 (depends on 1) The polymer composition of claim 1, wherein the epoxy-functionalized olefin polymer is poly(ethylene-co-butylacrylate-co-glycidyl methacrylate). ### Claim 13 (depends on 1) The polymer composition of claim 1, further comprising an electrically conductive filler. ### Claim 14 (depends on 13) The polymer composition of claim 13, wherein the electrically conductive filler includes an ionic liquid. ### Claim 15 (depends on 1) The polymer composition of claim 1, wherein the composition contains no more than about 10 wt. % of fibrous fillers. ### Claim 16 (depends on 1) The polymer composition of claim 1, wherein the composition exhibits a tensile elongation at break of about 3.5% or more, as determined in accordance with ISO Test No. 527:2012 at 23° C. ### Claim 17 (depends on 1) The polymer composition of claim 1, wherein the composition exhibits a Charpy notched impact strength of about 6 kJ/m2 or more, as determined in accordance with ISO Test No. 179-1:2010 at 23° C. ### Claim 18 (depends on 1) The polymer composition of claim 1, wherein the composition exhibits a dimensional stability of about 6 or less as determined in accordance with ISO 294-4:2001 using a Type D2 specimen. ### Claim 19 (depends on 1) A molded part comprising the polymer composition of claim 1. ### Claim 20 A molded part for a camera module, wherein the molded part comprises a polymer composition that includes a liquid crystalline polymer, the composition exhibiting a tensile elongation at break of about 3.5% or more as determined in accordance with ISO Test No. 527:2012 at 23° C., a Charpy notched impact strength of about 6 kJ/m2 or more as determined in accordance with ISO Test No. 179-1:2010 at 23° C., and a dimensional stability of about 6 or less as determined in accordance with ISO 294-4:2001 using a Type D2 specimen. ### Claim 21 (depends on 20) The molded part of claim 20, wherein the polymer composition comprises an inorganic particulate material having a hardness value of about 2.5 or more based on the Mohs hardness scale. ### Claim 22 (depends on 21) The molded part of claim 21, wherein the inorganic particulate material has a median size of from about 0.1 to about 35 micrometers. ### Claim 23 (depends on 20) The molded part of claim 20, wherein the polymer composition comprises an epoxy-functionalized olefin copolymer. ### Claim 24 (depends on 19) A camera module comprising the molded part of claim 19. ### Claim 25 (depends on 24) The camera module of claim 24, wherein the camera module comprises a generally planar base on which is mounted a carrier assembly, wherein the base, carrier assembly, or both contain the molded part. ### Claim 26 (depends on 19) A method for joining the molded part of claim 19 to an additional component, wherein the method comprises: forming receiving holes in the molded part and the component; inserting heat stakes into the holes; and subjecting the heat stakes to heat and pressure to thereby join the molded part to the component.