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.
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.
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.
December 26, 2018
Date of Patent:
May 10, 2022
Takayoshi Okuzu, Akiko Hamamoto, Ken Akamatsu
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.
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.
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).
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).
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
September 20, 2017
Date of Patent:
June 22, 2021
Mari Shimizu, Kouhei Tanaka, Nobuyasu Okumura
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.