Patents Assigned to Mitsubishi Engineering-Plastics Corporation
  • Publication number: 20230374300
    Abstract: To provide a resin composition having high relative permittivity, while keeping low loss tangent, and excellent mechanical strength; a molded article; and a method for manufacturing a plated molded article. A resin composition comprising: per 100 parts by mass of a thermoplastic resin, 0.3 to 10 parts by mass an acid-modified polymer; 5 to 150 parts by mass of a laser direct structuring additive; and 10 to 150 parts by mass of a reinforcing fiber, the laser direct structuring additive being a compound being a conductive oxide having a resistivity of 5×103 ?·cm or smaller, and containing at least one type selected from a Group n (n represents an integer of 3 to 16) metal in the periodic table and a Group n+1 metal, or, calcium copper titanate.
    Type: Application
    Filed: July 16, 2021
    Publication date: November 23, 2023
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventors: Tatsuya KIKUCHI, Rina TAKEUCHI, Yohei NISHINO
  • Publication number: 20230340252
    Abstract: A resin composition for electromagnetic wave absorber may have large absorbance of electromagnetic wave, small transmittance and reflectance of electromagnetic wave, and small variation of reflectance depending on frequency of electromagnetic wave. An electromagnetic wave absorber may use such a composition. The resin composition may contain 0.1 to 10.0 parts by mass of an electromagnetic wave absorbing material, per 100 parts by mass of a thermoplastic resin, demonstrating an absorbance at 76.5 GHz frequency of 40.0 to 100%, when formed to a size of 150 mm×150 mm×2 mm thick and determined by Equation (A); demonstrating a difference between the maximum and minimum value of reflectance in the range from 70 GHz to 80 GHz frequency of 20.0% or smaller, when formed to a size of 150 mm×150 mm×2 mm thick and determined by Equation (B); and being suited for use as an electromagnetic wave absorber.
    Type: Application
    Filed: June 16, 2021
    Publication date: October 26, 2023
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventors: Shuta ISEKI, Hidekazui SHOJI
  • Publication number: 20230323111
    Abstract: A resin composition, a formed article, and, an electromagnetic wave absorber, may each have large electromagnetic wave absorbance. The resin composition may contain: a thermoplastic resin; and an electro-conductive substance, the resin composition, when formed to a 2 mm thick test specimen and a cross section thereof is observed under a digital microscope, giving an aggregate attributable to the electro-conductive substance, with an area percentage of the aggregate, having an equivalent circle diameter of 30 µm or larger, of 0.80% or smaller.
    Type: Application
    Filed: February 24, 2022
    Publication date: October 12, 2023
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventors: Shuta ISEKI, Hidekazu SHOJI, Satomi KITAGAWA
  • Publication number: 20230265284
    Abstract: To provide a resin composition that excels both in transparency and mechanical strength, as well as a formed article, and a formed article with hard coat layer. The resin composition contains 5 to 100 parts by mass of a glass filler, per 100 parts by mass of a resin component, the resin component containing 40 to 85 parts by mass of a polycarbonate resin that contains a structural unit represented by Formula (1), and 15 to 60 parts by mass of a thermoplastic resin other than the polycarbonate resin, the resin component and the glass filler demonstrating an absolute difference in refractive index of 0.0042 or smaller, and the resin component demonstrating a coefficient of dynamic friction, measured in compliance with ISO 19252, of 0.40 or smaller: In Formula (1), R1 represents a methyl group.
    Type: Application
    Filed: September 24, 2021
    Publication date: August 24, 2023
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventors: Yohei NISHINO, Sawa YOSHIDA
  • Publication number: 20230250276
    Abstract: A resin composition including a thermoplastic resin and a carbon nanotube. The resin composition has a dielectric constant at 76.5 GHz frequency of 4.50 or larger. A method for producing the resin composition, the method including, melt-kneading the thermoplastic resin, and a masterbatch of the carbon nanotube in the thermoplastic resin.
    Type: Application
    Filed: February 24, 2022
    Publication date: August 10, 2023
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventors: Shuta ISEKI, Hidekazu SHOJI
  • Publication number: 20230242747
    Abstract: A resin composition containing, per 100 parts by mass of a thermoplastic resin, 0.1 to 10.0 parts by mass of a carbon nanotube, and 10 to 100 parts by mass of a glass fiber, with a mass proportion of the carbon nanotube and the glass fiber (carbon nanotube/glass fiber) being 0.01 to 0.30.
    Type: Application
    Filed: June 16, 2021
    Publication date: August 3, 2023
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventors: Shuta ISEKI, Hidekazu SHOJI
  • Publication number: 20230174776
    Abstract: A resin composition that is laser-weldable under broad conditions of laser irradiation. A formed article formed of the resin composition. A kit for Galvano-scanning laser welding with a transmissive resin composition and a light-absorptive resin composition. A car-borne camera component formed of the resin composition. A car-borne camera module with the car-borne camera component. A UV exposed article formed of the resin composition. A method for manufacturing a formed article by welding a transmissive resin member and an absorptive resin member by Galvano-scanning laser welding. The resin composition for Galvano-scanning laser welding, contains 0.1 to 20 parts by mass of a reactive compound, per 100 parts by mass of a thermoplastic resin.
    Type: Application
    Filed: May 7, 2021
    Publication date: June 8, 2023
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventors: Yuki HIWATASHI, Rina TAKEUCHI
  • Publication number: 20230159745
    Abstract: A resin composition may suppress color fading after a weathering test and excel in heat resistance. A formed article may use of such resin composition, as may a kit, a car-borne camera component, a car-borne camera module. A resin composition may include: per 100 parts by mass of a resin component that contains 50 to 95% by mass of a polybutylene terephthalate resin (A), and 5 to 50% by mass of a thermoplastic resin (B) that demonstrates a glass transition temperature, measured with use of a differential scanning calorimeter, higher by 15 to 150° C. than that of the polybutylene terephthalate resin (A); 0.001 to 5 parts by mass of a dye; and 5 to 100 parts by mass of an inorganic filler.
    Type: Application
    Filed: May 7, 2021
    Publication date: May 25, 2023
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventor: Yuki HIWATASHI
  • Publication number: 20230150171
    Abstract: A method for producing a polycarbonate resin composition pellet with a twin screw extruder, the polycarbonate resin composition pellet has 30 to 95 mass % of a resin pellet (A) containing more than 40 mass % of a polycarbonate resin in the pellet; not less than 5 mass % and less than 40 mass % of a phosphate ester flame retardant (B) that is a liquid at room temperature; 0 to 50 mass % of polycarbonate resin flake (C); 0 to 30 mass % of an ABS resin (D); and 0 to 15 mass % of an additive (E) other than component (B). The method includes feeding components (A), (C), (D) and (E) in a twin screw extruder and kneading with a first kneading zone; feeding component (B) to a downstream part in the first kneading zone and kneading with a second kneading zone; and decompressing a vent in the downstream part in the second kneading zone.
    Type: Application
    Filed: March 8, 2021
    Publication date: May 18, 2023
    Applicant: Mitsubishi Engineering-Plastics Corporation
    Inventors: Takafumi YOSHINO, Toshiyuki TAJIRI, Hiroyuki TAJIMA
  • Publication number: 20230145210
    Abstract: A composition that contains a polycarbonate resin and a recycled carbon fiber, and demonstrates mechanical strength which is close to that of a case where the virgin carbon fiber is blended. The composition contains 100 parts by mass of a polycarbonate resin having a terminal hydroxy group content of 150 to 800 ppm; and 5 to 65 parts by mass of a recycled carbon fiber which is a heated product of a carbon fiber-reinforced resin. A pellet formed of the composition. A molded article formed of the composition. A method for producing the composition. The method includes feeding to an extruder 100 parts by mass of a polycarbonate resin having a terminal hydroxy group content of 150 to 800 ppm, and 5 to 65 parts by mass of a recycled carbon fiber which is a heated product of a carbon fiber-reinforced resin; and melt kneading the extruded polycarbonate resin.
    Type: Application
    Filed: May 6, 2021
    Publication date: May 11, 2023
    Applicants: MITSUBISHI ENGINEERING-PLASTICS CORPORATION, SHINRYO CORPORATION
    Inventors: Yohei NISHINO, Seiichi TAKADA, Hiroyuki ARITA
  • Patent number: 11613629
    Abstract: A polycarbonate resin composition pellet contains a polycarbonate resin (A), an aromatic compound (B) represented by general formula (1) below, and a phosphorus-based stabilizer (C), the aromatic compound (B) being contained in the pellet in an amount of 0.001% to 1% by mass, the phosphorus-based stabilizer (C) being contained in the pellet in an amount of 0.003% to 0.5% by mass: (where Y is a hydrogen atom or an organic group that does not contain any of nitrogen, sulfur, and halogen elements, when Y is a hydrogen atom, X is an alkyl group or an optionally substituted aryl group, when Y is an organic group, X is an organic group that does not contain any of nitrogen, sulfur, and halogen elements, g is 1 or 2, n is 0 to 5, k is 1 to 4, and k+n is 6 or less.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: March 28, 2023
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventor: Junya Hayakawa
  • Patent number: 11613626
    Abstract: Provided is a polycarbonate resin composition that can block ultraviolet light as well as light on the visible light side therefrom at wavelengths of 400 to 420 nm, and that is free of the problem of gas generation during molding. The polycarbonate resin composition characteristically comprises, per 100 parts by mass of a polycarbonate resin (A), (i) 0.02 to 1 parts by mass of a sesamol group-containing benzotriazole ultraviolet absorber (B1) having a maximum absorption wavelength of at least 375 nm in the absorption curve determined according to JIS K 7105 using the following formula, or (ii) 0.08 to 1 parts by mass of a sesamol group-containing benzotriazole ultraviolet absorber (B2) having a maximum absorption wavelength of at least 360 nm and less than 375 nm in the absorption curve determined according to JIS K 7105 using the following formula; and 0.01 to 0.5% by mass of a stabilizer (C).
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: March 28, 2023
    Assignee: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventor: Atsushi Motegi
  • Patent number: 11608426
    Abstract: Provided is a polycarbonate resin composition that can block ultraviolet light as well as light on the visible light side therefrom at wavelengths of 400 to 420 nm, and that is free of the problem of gas generation during molding. The polycarbonate resin composition characteristically comprises, per 100 parts by mass of a polycarbonate resin (A), (i) 0.02 to 1 parts by mass of a sesamol group-containing benzotriazole ultraviolet absorber (B1) having a maximum absorption wavelength of at least 375 nm in the absorption curve determined according to JIS K 7105 using the following formula, or (ii) 0.08 to 1 parts by mass of a sesamol group-containing benzotriazole ultraviolet absorber (B2) having a maximum absorption wavelength of at least 360 nm and less than 375 nm in the absorption curve determined according to JIS K 7105 using the following formula; and 0.01 to 0.5% by mass of a stabilizer (C).
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: March 21, 2023
    Assignee: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventor: Atsushi Motegi
  • Patent number: 11603467
    Abstract: A polycarbonate resin composition comprising, 100 mass parts of (A1) a polycarbonate resin that contains a polycarbonate resin having a structural unit of the following general formula (1) and (A2) a polycarbonate resin having a structural unit of the general formula (2) in a mass ratio (A1)/(A2) of 100/0 to 10/90; 3 to 20 mass parts of a phosphorus flame retardant (B); 2 to 20 mass parts of a silicone flame retardant (C); and 3 to 100 mass parts of an inorganic filler (D), wherein the phosphorus flame retardant (B) is a phosphazene compound and/or a condensed phosphate ester, [C1]
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: March 14, 2023
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventor: Minoru Soma
  • Patent number: 11597827
    Abstract: To provide a resin composition, a pellet, a composite molded article, a method for manufacturing a composite molded article and a tank, all capable of enabling tight joining and integration of the polyacetal resin molded article and the polyethylene resin molded article, and of suppressing formaldehyde emission and occurrence of mold deposit. The resin composition contains a resin ingredient and melamine, the resin ingredient containing a polyacetal resin and a maleic anhydride-modified polyethylene resin, the polyacetal resin and the maleic anhydride-modified polyethylene resin following a mass proportion of (20 to 49):(80 to 51), and molar concentration of the maleic anhydride group capable of reacting with amino group of melamine contained in the resin composition being 5 to 25 ?mol/g.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: March 7, 2023
    Assignees: MITSUBISHI ENGINEERING-PLASTICS CORPORATION, JAPAN POLYETHYLENE CORPORATION
    Inventors: Kunihiko Fujimoto, Kei Takahashi, Ritsuya Matsumoto
  • Publication number: 20220372218
    Abstract: Provided is a resin composition for laser direct structuring on which a plating can be formed and demonstrating low loss tangent, a molded article, and, a method for manufacturing a plated molded article. The resin composition for laser direct structuring contains a polycarbonate resin and a laser direct structuring additive, and the polycarbonate resin containing 5% by mass or more, relative to all structural units, of a structural unit represented by formula (1). In formula (1), each of R1 and R2 independently represents a hydrogen atom or a methyl group, and W1 represents a single bond or a divalent group).
    Type: Application
    Filed: November 4, 2020
    Publication date: November 24, 2022
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventor: Tatsuya KIKUCHI
  • Publication number: 20220363894
    Abstract: Provided is a resin composition for electronic/electric equipment component used with an electromagnetic wave at a frequency of 1 GHz or higher, having low loss tangent, and, an electronic/electric equipment component used with an electromagnetic wave at a frequency of 1 GHz or higher. The resin composition for electronic/electric equipment component used with an electromagnetic wave at a frequency of 1 GHz or higher contains a polycarbonate resin, and the polycarbonate resin having a mass ratio of a structural unit represented by formula (1) and a carbonate unit other than the structural unit represented by formula (1) of (33 to 100):(67 to 0), in formula (1), each of R1 and R2 independently represents a hydrogen atom or a methyl group, and W1 represents a single bond or a divalent group.
    Type: Application
    Filed: November 4, 2020
    Publication date: November 17, 2022
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventors: Tatsuya KIKUCHI, Yohei NISHINO
  • Publication number: 20220356304
    Abstract: To provide a resin composition capable of effectively suppressing the mechanical strength from degrading even if kept under high temperatures and high humidity, and of suppressing color transfer, as well as a molded article with use of the resin composition, and a method for producing the resin composition. The resin composition contains a polyamide resin and cerium oxide, with a lanthanum content in the resin composition of more than 0 ppm by mass and 40 ppm by mass or less.
    Type: Application
    Filed: June 15, 2020
    Publication date: November 10, 2022
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventor: Fumihito OKAMOTO
  • Publication number: 20220348762
    Abstract: To provide resin composition, a pellet and a powder for use in new powder additive manufacturing, as well as a shaped article using the same, and a method for manufacturing such shaped article. The resin composition comprises a polybutylene terephthalate that contains a terephthalic acid-derived structural unit and a 1,4-butanediol-derived structural unit, for use in powder additive manufacturing, the resin composition having a value (?), defined by mathematical formula [1] below, of 40 or smaller: ?=|(MVR1?MVR0)/MVR0|×100??[1] where, MVR0 is melt volume flow rate (in cm3/10 min), and MVR1 is melt volume flow rate (in cm3/10 min).
    Type: Application
    Filed: January 30, 2020
    Publication date: November 3, 2022
    Applicants: MITSUBISHI ENGINEERING-PLASTICS CORPORATION, MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hidekazu SHOUJI, Yasushi YAMANAKA, Minoru KISHISHITA, Masaki SUGIHARA
  • Patent number: D970620
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: November 22, 2022
    Assignee: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventors: Seiji Morimoto, Kaori Yamazaki