Patents Assigned to Unitika Ltd.
  • Publication number: 20220220256
    Abstract: A semi-aromatic polyamide film having a thermal shrinkage factor in the longitudinal direction of the film, SMD, of ?1.0 to 1.5% and a thermal shrinkage factor in the width direction of the film, STD, of ?1.0 to 1.5% as measured under the conditions of 250° C. and 5 min, a tensile breaking elongation of 70% or more in the longitudinal direction and the width direction, and a haze of 14% or less.
    Type: Application
    Filed: May 13, 2020
    Publication date: July 14, 2022
    Applicant: UNITIKA LTD.
    Inventors: Takashi Okabe, Masafumi Yamamoto, Sumito Kihara
  • Publication number: 20220195187
    Abstract: A polyamide resin composition including a semi-aromatic polyamide (A) having a melting point of 290 to 330° C. and a fibrous reinforcing material (B), wherein the polyamide resin composition has an amount of creep strain of 2.0% or less in the flow direction after a lapse of 100 hours under the measurement conditions of a temperature of 100° C. and a tensile load of 75 MPa.
    Type: Application
    Filed: April 17, 2020
    Publication date: June 23, 2022
    Applicant: UNITIKA LTD.
    Inventors: Miho Asai, Junichi Mii
  • Patent number: 11326032
    Abstract: Provided is a polyamide film which is a stretched film including a polyamide resin composition containing 1 to 10% by mass of a polyester thermoplastic elastomer, wherein the polyamide film satisfies all of the following conditions (A) to (C): (A) elastic moduli in MD and TD of the film are each 1.0 to 2.3 GPa; (B) a ratio between the elastic moduli in MD and TD of the film (MD/TD) is 0.9 to 1.5; and (C) a haze of the film is 7% or less.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: May 10, 2022
    Assignee: Unitika Ltd.
    Inventors: Takayoshi Okuzu, Akiko Hamamoto, Ken Akamatsu
  • Publication number: 20220106435
    Abstract: The present invention provides an epoxy resin solution, from which an epoxy resin-cured product adequately excellent in heat-resisting properties and dielectric properties can be obtained with adequately good working properties ensured. The present invention relates to an epoxy resin solution containing at least a curing agent and an epoxy resin mixed in an organic solvent, wherein the curing agent comprises an imide group-containing curing agent having 1-4 imide groups and 2-4 glycidyl group-reactive functional groups in a molecule.
    Type: Application
    Filed: January 21, 2020
    Publication date: April 7, 2022
    Applicant: UNITIKA LTD.
    Inventors: Ayumi YANAKA, Yumeto FUKUBAYASHI, Takatoshi MURAKAMI
  • Publication number: 20220088910
    Abstract: A laminate including one or more layers of a layer consisting of a polyimide resin and a layer consisting of a polyamide resin, respectively, in which a puncture strength is 0.60 N/?m or more, and a retention rate of edge tear resistance measured at a bent portion after a bend test is 70% or more.
    Type: Application
    Filed: December 25, 2019
    Publication date: March 24, 2022
    Applicant: UNITIKA LTD.
    Inventors: Guangzhu Li, Toshihiro Ogino, Atsuko Noda
  • Publication number: 20220073731
    Abstract: The present invention provides a polyarylate resin composition sufficiently excellent in heat resistance, transparency, heat discoloration resistance and moist heat resistance, and a molded article made of the same. The present invention relates to a polyarylate resin composition containing 0.005˜5 parts by mass of a silane compound (C) with a boiling point of 200° C. or more, based on 100 parts by mass of the total of a polyarylate resin (A) and a polycarbonate resin (B), a content ratio of the polyarylate resin (A) and the polycarbonate resin (B) being 5/95 to 95/5 (mass ratio).
    Type: Application
    Filed: February 12, 2020
    Publication date: March 10, 2022
    Applicant: UNITIKA LTD.
    Inventors: Toshiki NAGAHATA, Takatoshi MURAKAMI
  • Publication number: 20220064443
    Abstract: A polyamide resin composition including 100 parts by mass of a polyamide (A), 3.0 to 10.0 parts by mass of a polyalcohol (B), and 0.0 to 4.0 parts by mass of an aromatic polycarboxylic acid (C), wherein the total amount of a carboxyl group of (A) and (C) is 80 to 600 mmol per 1 kg in total of (A), (B), and (C).
    Type: Application
    Filed: May 13, 2020
    Publication date: March 3, 2022
    Applicant: UNITIKA LTD.
    Inventors: Yusuke Yagi, Yuki Takubo, Tatsunori Masaki
  • Publication number: 20220056229
    Abstract: A laminated film having a resin layer laminated on at least one surface of a base film. The laminated film is characterized by: the base film being a semi-aromatic polyamide film that has been at least uniaxially stretched; the resin layer having a thickness of 0.03 to 0.5 ?m; and the close adhesion between the base film and the resin layer, according to the cross-cut method described in JIS K 5600, being 95% or more.
    Type: Application
    Filed: February 19, 2020
    Publication date: February 24, 2022
    Applicant: UNITIKA LTD.
    Inventors: Takashi Okabe, Nobuyasu Okumura, Masafumi Yamamoto, Kumi Ashihara, Midori Shimomura, Yoshimi Ueno
  • Patent number: 11254814
    Abstract: The present invention is to provide a resin composition capable of producing a molded product sufficiently excellent in hydrolysis resistance and mold release characteristics and having an excellent balance between heat resistance and fluidity, even if a heat stabilizer and a mold release agent are contained. The present invention relates to a resin composition, comprising: (A) a polyarylate resin; (B) a melt-polymerized polycarbonate resin; (C) a specific phosphite compound; and (D) a dipentaerythritol fatty acid ester, a mass ratio (A/B) of the (A) polyarylate resin and the (B) melt-polymerized polycarbonate resin being from 2/98 to 98/2, and the resin composition having a Vicat softening point of 140° C. or higher.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: February 22, 2022
    Assignee: UNITIKA LTD.
    Inventor: Yutaka Nabeshima
  • Publication number: 20220033584
    Abstract: A flexible polyamide including a unit formed from an aliphatic dicarboxylic acid (A1) having 18 or more carbon atoms and/or a unit formed from an aliphatic diamine (B1) having 18 or more carbon atoms, wherein the polyamide has a total content of 10 to 90% by mass of the unit formed from (A1) and the unit formed from (B1) and has a melting point of 240° C. or higher.
    Type: Application
    Filed: October 23, 2019
    Publication date: February 3, 2022
    Applicant: UNITIKA LTD.
    Inventors: Makoto Nakai, Yuki Takubo, Yusuke Yagi
  • Publication number: 20220009797
    Abstract: A water purification cartridge includes a casing with a tubular shape that has an inflow portion for raw water to flow in and an outflow portion for purified water to flow out, and a filter member for filtering the raw water, the filter member being accommodating within the casing. The filter member is formed to have a cylindrical shape having a hollow portion, and has a first face and a second face at respective ends in an axial direction. The casing has a first cover portion, a second cover portion, and a side wall portion. The first cover portion covers the first face. The second cover covers the second face. The side wall portion covers an outer circumferential face of the filter member. In the first cover portion, a first contact portion is formed that annularly comes into contact with the first face and that press the filter member in the axial direction to elastically deform the filter member.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 13, 2022
    Applicant: UNITIKA LTD.
    Inventors: Shinji TANIGUCHI, Norihiro NAITO
  • Publication number: 20210403710
    Abstract: The present invention provides a thermoplastic resin pellet capable of obtaining a molded body which is excellent in metallic coloring properties, surface smoothness property, and flow mark suppressing properties, and has a sufficient metallic appearance. The present invention relates a metallic-tone thermoplastic resin pellet comprising 100 parts by weight of a thermoplastic resin (A), 0.5 to 10 parts by mass of metallic particles (B), and 0 to 10 parts by mass of plate-like, fibrous and/or granular filler (C), wherein the pellet has a cylindrical shape having a circular or elliptical cross section perpendicular to the longitudinal direction, and the pellet has a length of 0.5 to 2.8 mm and a cross-sectional major diameter of 0.5 to 2.8 mm.
    Type: Application
    Filed: October 28, 2019
    Publication date: December 30, 2021
    Applicant: UNITIKA LTD.
    Inventors: Yukinari NEGI, Yoshihito KISARA, Masako TANAKA
  • Patent number: 11186931
    Abstract: [Problem] To provide a process for producing a needle-punched nonwoven fabric with which, when finished by embossing, it is possible to obtain a hardly fluffing and distinct rugged pattern. [Solution] Sheath-core composite fibers are accumulated and a fibrous web is formed. The core component of the sheath-core composite fiber is formed from a copolymer of ethylene glycol and terephthalic acid. The sheath component is formed from a copolymer of ethylene glycol, adipic acid, terephthalic acid, isophthalic acid and diethylene glycol. The sheath-core composite fibers are three dimensionally interlaced with each other by needle-punching the web, to obtain the needle-punched nonwoven fabric. The needle-punched nonwoven fabric is passed through heated embossed roll to provide a rugged pattern on a surface. During the process, the sheath component are softening melted and melt bonded between the sheath-core composite fibers to obtain an embossed nonwoven fabric having a distinct rugged pattern.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: November 30, 2021
    Assignee: UNITIKA LTD.
    Inventors: Kazutoshi Hanaya, Toru Takahashi, Hideaki Kaminokado, Masaya Akao, Yusuke Nagatsuka
  • Patent number: 11174191
    Abstract: A glass composition of the present disclosure includes, in wt %, 50?SiO2?56, 20?B2O3?30, 10?Al2O3?20, 3.5?MgO+CaO?10, and 0?R2O?1.0, further includes Fe2O3, and has a permittivity of less than 5.0 at a frequency of 1 MHz. R is at least one element selected from Li, Na, and K. The glass composition of the present disclosure is a low-permittivity glass composition with which the occurrence of fiber breakage during fiber forming can be reduced even when glass fibers to be formed have a small fiber diameter, and the occurrence of defects such as fiber breakage and fluffing during processing of the glass fibers can be reduced.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: November 16, 2021
    Assignees: NIPPON SHEET GLASS COMPANY, LIMITED, UNITIKA LTD., UNITIKA GLASS FIBER CO., LTD.
    Inventors: Yoshiyuki Inaka, Takaharu Miyazaki, Koji Hayashi, Riku Sawai, Yoshito Nawa, Daisuke Nishinaka, Tomoki Sekida
  • Publication number: 20210332240
    Abstract: The present invention provides a resin composition excellent in mechanical properties, stiffness properties, appearance characteristics, flame retardancy and metal corrosion resistance and having a small environmental load, compared to those of conventional polyamide-based flame-retardant resin compositions. The present invention related to a flame-retardant resin composition, comprising: 35 to 85% by mass of a polyamide resin (A); 0.45 to 30% by mass of a cellulose fiber (B) having an average fiber diameter of 10 ?m or less; 4.5 to 40% by mass of metal phosphinate (C); and 0 to 35% by mass of a reinforcing material (D) other than the cellulose fiber.
    Type: Application
    Filed: July 17, 2019
    Publication date: October 28, 2021
    Applicant: UNITIKA LTD.
    Inventors: Miho NAKAI, Shota NOGUCHI, Shohei KUMAZAWA, Hiroo KAMIKAWA
  • Publication number: 20210276316
    Abstract: This polyester film has at least one surface constituted of a polyester film layer A, and is characterized in that: a polyester resin constituting the polyester film layer A has an inherent viscosity of 0.63 to 0.85 dl/g; the polyester film layer A contains organic particles and the surface of the polyester film layer A has an arithmetic average roughness (Ra) of a roughness curve of 0.2 to 1.0 ?m, and an average length (RSm) of roughness curve elements of 10 to 250 ?m.
    Type: Application
    Filed: September 28, 2017
    Publication date: September 9, 2021
    Applicant: UNITIKA LTD.
    Inventors: Masafumi Yamamoto, Sumito Kihara, Takashi Ando
  • Patent number: 11104643
    Abstract: An object of the present invention is to provide a bismaleimide (D-BMI) modified product in which an amino group of dimer diamine (DDA) is maleimidized, which has the good heat resistance, and has the sufficiently enhanced processability, and a method for producing the same. There are provided: <1> A bismaleimide (D-BMI) modified product in which an amino group of dimer diamine is maleimidized, the bismaleimide modified product having the following characteristics: 1) An acid value of the D-BMI modified product is 2 mg-KOH/g or less. 2) In 1H-NMR, when quantitative comparison is performed using an integrated value (A) of a peak corresponding to a proton of a methylene group directly bound to a nitrogen atom of a maleimide group and an integrated value (B) of a peak corresponding to a vinyl proton of a maleimide group, A/B is 1.25 or more and 2.00 or less.
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: August 31, 2021
    Assignee: UNITIKA LTD.
    Inventors: Yuki Yamada, Tatsuya Morikita, Takeshi Yoshida, Akira Shigeta, Yoshiaki Echigo
  • Publication number: 20210253848
    Abstract: The present invention is to provide a resin composition capable of producing a molded product sufficiently excellent in hydrolysis resistance and mold release characteristics and having an excellent balance between heat resistance and fluidity, even if a heat stabilizer and a mold release agent are contained. The present invention relates to a resin composition, comprising: (A) a polyarylate resin; (B) a melt-polymerized polycarbonate resin; (C) a specific phosphite compound; and (D) a dipentaerythritol fatty acid ester, a mass ratio (A/B) of the (A) polyarylate resin and the (B) melt-polymerized polycarbonate resin being from 2/98 to 98/2, and the resin composition having a Vicat softening point of 140° C.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 19, 2021
    Applicant: UNITIKA LTD.
    Inventor: Yutaka NABESHIMA
  • Patent number: 11040515
    Abstract: There is provided a release film comprising a substrate film and a resin layer provided on at least one surface of a substrate film, wherein the resin layer comprises 100 parts by mass of an acid-modified polyolefin resin, 1 to 20 parts by mass of a crosslinking agent and 10 to 1,000 parts by mass of a polyvinyl alcohol having a saponification rate of 99% or lower.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: June 22, 2021
    Assignee: Unitika Ltd.
    Inventors: Mari Shimizu, Kouhei Tanaka, Nobuyasu Okumura
  • Publication number: 20210179843
    Abstract: A polyester film comprises a polyester (A) composed mainly of polybutylene terephthalate and a polyester (B) composed mainly of polyethylene terephthalate, wherein a mass ratio (A/B) between the polyesters (A) and (B) is 70/30 to 55/45, a dry heat shrinkage rate (A) through heat treatment at 160° C. for 30 minutes is 20% or less in any of four directions on a film surface (0°, 45°, 90° and 135®), a difference between a maximum value and a minimum value of these dry heat shrinkage rates is 5% or less, a dry heat shrinkage rate (B) through heat treatment at 200° C. for 15 minutes is 35% or less in any of the four directions, a difference between a maximum value and a minimum value of these dry heat shrinkage rates is 5% or less, and a thickness variation in the four directions is 10% or less.
    Type: Application
    Filed: September 5, 2019
    Publication date: June 17, 2021
    Applicant: UNITIKA LTD.
    Inventors: Takayoshi Okuzu, Ken Akamatsu, Akiko Hamamoto, Hiroshi Ashihara, Goro Araki, Akito Kajita