# US 12,110,388 B2 · Polybutylene terephthalate resin composition and molded article > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,110,388 B2 - Document ID: US12110388B2 - Status: Granted - Kind: B2 - Application number: 17/238,266 - Filed: 2021-04-23 - Published: 2021-08-12 - Granted: 2024-10-08 - Earliest claimed: 2016-05-19 - Assignees: Mitsubishi Chemical Corporation - Applicants: Mitsubishi Chemical Corporation - Inventors: Souki Yoshida; Yasushi Yamanaka - Web page: https://patentgrep.com/patent/US12110388B2 ## CPC - C08L 67/02: Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence) - C08J 5/00: Manufacture of articles or shaped materials containing macromolecular substances (manufacture of semi-permeable membranes B01D67/00 - B01D71/00) - C08L 23/08: Copolymers of ethene (C08L23/16 takes precedence) - C08L 63/00: Compositions of epoxy resins; Compositions of derivatives of epoxy resins - H01R 13/533: Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure (H01R13/52 takes precedence) - C08L 2201/02: Flame or fire retardant/resistant - C08L 2203/20: use in electrical or conductive gadgets - C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure - C08L 2205/035: containing four or more polymers in a blend - C08L 2205/06: having improved processability or containing aids for moulding methods - H01B 3/40: epoxy resins - H01R 2201/26: for vehicles - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - 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) - H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS - 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}) ## Abstract Disclosed is a connector connection port formed by injection molding a polybutylene terephthalate resin material. A protruding boss part is provided on an outer or inner peripheral surface of the connector connection port. Voids are present in the boss part and a lower part of the outer or inner peripheral surface on which the boss part is provided. When a total of cross-sectional areas of voids in a region at a height of 0-0.5 mm from the outer or inner peripheral surface in the boss part is S1, a total of cross-sectional areas of voids in a region at a depth of 0-0.5 mm from the outer or inner peripheral surface on which the boss part is provided is S2, and a total of S1 and S2 is 100%, an areal ratio of S1 is 5% to 45% and an areal ratio of S2 is 55% to 95%. ## Claims ### Claim 1 A connector connection port, wherein: the connector connection port is formed of a molded body obtained by injection molding a polybutylene terephthalate resin material, and a boss part is provided in a protruding form on an outer peripheral surface or inner peripheral surface of the connector connection port, voids are present in the polybutylene terephthalate resin material in the boss part and a lower part of the outer peripheral surface or inner peripheral surface on which the boss part is provided, when a sum total of cross-sectional areas of voids which are present in a region lying at a height of 0 to 0.5 mm from the outer peripheral surface or inner peripheral surface in the boss part is denoted by S1, a sum total of cross-sectional areas of voids which are present in a region lying at a depth of 0 to 0.5 mm from the outer peripheral surface or inner peripheral surface on which the boss part is provided is denoted by S2, and a total area of S1 and S2 is 100%, an areal ratio of S1 is 5% to 45% and an areal ratio of S2 is 55% to 95%, the polybutylene terephthalate resin material is a polybutylene terephthalate resin composition having a crystallization temperature of from 175 to 193° C., and the polybutylene terephthalate resin material comprises 100 parts by mass of a polybutylene terephthalate resin and 5 to 30 parts by mass of an elastomer, and the elastomer is within a phase of the polybutylene terephthalate resin. ### Claim 2 (depends on 1) The connector connection port according to claim 1, wherein the polybutylene terephthalate resin composition contains at least one selected from the group consisting of an epoxy compound, a brominated epoxy compound and an epoxy group-containing elastomer. ### Claim 3 (depends on 1) The connector connection port according to claim 1, wherein the polybutylene terephthalate resin composition contains at least two different brominated flame retardants selected from the group consisting of a brominated epoxy compound, a brominated polycarbonate compound and a brominated polystyrene compound. ### Claim 4 (depends on 1) The connector connection port according to claim 1, wherein the connector connection port is provided on a side surface of a housing of an electronic device comprising an electronic component and a connector for external connection, such that an external connector is capable of being inserted and connected to the connector connection port. ### Claim 5 (depends on 1) An electronic device, comprising: the connector connection port according to claim 1; and an external connector, wherein the connector connection port is inserted into and connected to the external connector, and the electronic device is a vehicular electronic device. ### Claim 6 (depends on 1) An electronic device, comprising: the connector connection port according to claim 1; and an external connector, wherein the connector connection port is inserted into and connected to the external connector, and the electronic device is an engine control unit. ### Claim 7 (depends on 1) The connector connection port according to claim 1, wherein the polybutylene terephthalate resin material further comprises: a total of 30 to 60 parts by mass of at least two different brominated flame retardants selected from the group consisting of a brominated epoxy compound, a brominated polycarbonate compound and a brominated polystyrene compound; 5 to 15 parts by mass of an antimony compound; and 0.5 to 3 parts by mass of a mold-release agent.