Patents Assigned to Unitika Ltd.
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Publication number: 20220056229Abstract: 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: ApplicationFiled: February 19, 2020Publication date: February 24, 2022Applicant: UNITIKA LTD.Inventors: Takashi Okabe, Nobuyasu Okumura, Masafumi Yamamoto, Kumi Ashihara, Midori Shimomura, Yoshimi Ueno
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Patent number: 11254814Abstract: 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: GrantFiled: April 21, 2020Date of Patent: February 22, 2022Assignee: UNITIKA LTD.Inventor: Yutaka Nabeshima
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Publication number: 20220033584Abstract: 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: ApplicationFiled: October 23, 2019Publication date: February 3, 2022Applicant: UNITIKA LTD.Inventors: Makoto Nakai, Yuki Takubo, Yusuke Yagi
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Publication number: 20220009797Abstract: 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: ApplicationFiled: September 30, 2019Publication date: January 13, 2022Applicant: UNITIKA LTD.Inventors: Shinji TANIGUCHI, Norihiro NAITO
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Publication number: 20210403710Abstract: 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: ApplicationFiled: October 28, 2019Publication date: December 30, 2021Applicant: UNITIKA LTD.Inventors: Yukinari NEGI, Yoshihito KISARA, Masako TANAKA
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Patent number: 11186931Abstract: [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: GrantFiled: April 10, 2018Date of Patent: November 30, 2021Assignee: UNITIKA LTD.Inventors: Kazutoshi Hanaya, Toru Takahashi, Hideaki Kaminokado, Masaya Akao, Yusuke Nagatsuka
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Patent number: 11174191Abstract: 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: GrantFiled: May 18, 2018Date of Patent: November 16, 2021Assignees: 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
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Publication number: 20210332240Abstract: 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: ApplicationFiled: July 17, 2019Publication date: October 28, 2021Applicant: UNITIKA LTD.Inventors: Miho NAKAI, Shota NOGUCHI, Shohei KUMAZAWA, Hiroo KAMIKAWA
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Publication number: 20210276316Abstract: 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: ApplicationFiled: September 28, 2017Publication date: September 9, 2021Applicant: UNITIKA LTD.Inventors: Masafumi Yamamoto, Sumito Kihara, Takashi Ando
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Patent number: 11104643Abstract: 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: GrantFiled: July 16, 2020Date of Patent: August 31, 2021Assignee: UNITIKA LTD.Inventors: Yuki Yamada, Tatsuya Morikita, Takeshi Yoshida, Akira Shigeta, Yoshiaki Echigo
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Publication number: 20210253848Abstract: 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: ApplicationFiled: April 21, 2020Publication date: August 19, 2021Applicant: UNITIKA LTD.Inventor: Yutaka NABESHIMA
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Patent number: 11040515Abstract: 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: GrantFiled: September 20, 2017Date of Patent: June 22, 2021Assignee: Unitika Ltd.Inventors: Mari Shimizu, Kouhei Tanaka, Nobuyasu Okumura
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Publication number: 20210179843Abstract: 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: ApplicationFiled: September 5, 2019Publication date: June 17, 2021Applicant: UNITIKA LTD.Inventors: Takayoshi Okuzu, Ken Akamatsu, Akiko Hamamoto, Hiroshi Ashihara, Goro Araki, Akito Kajita
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Publication number: 20210139390Abstract: The present invention provides a production method of an organic compound, in which a reaction is performed between functional groups without using any solvents. The present invention relates to a production method of an organic compound, in which a reaction is performed between functional groups by using a mechanochemical effect.Type: ApplicationFiled: June 28, 2019Publication date: May 13, 2021Applicant: UNITIKA LTD.Inventors: Yumeto FUKUBAYASHI, Makoto NAKAI, Ayumi YANAKA
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Patent number: 10954396Abstract: The present invention provides a nickel nanowires-containing paste having an adequately high thermal curing rate even under comparatively low temperature, which is excellent in functional properties such as an electrical conductivity, strength properties (in particular, a bending property), a water-resisting property, a salt water-resisting property and electromagnetic-wave shielding properties, from which a cured structure excellent in an electrical conductivity can be obtained even if it is stored for a long time. The present invention relates to a paste comprising nickel nanowires, an alkoxy-alkylated polyamide and a glycol.Type: GrantFiled: October 1, 2018Date of Patent: March 23, 2021Assignee: UNITIKA LTD.Inventors: Hirotaka Takeda, Chikako Yamada
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Publication number: 20210009516Abstract: An object is to provide a method for easily producing maleimide (MI) in which trace amounts of residual acid components as impurities in a crude MI are efficiently reduced, that is, the acid value is sufficiently reduced. <1> A method for producing purified MI, comprising reducing an acid value of crude MI by 50% or more, by adding carbodiimide (CDI) to a solution comprising the crude MI to react an acid component in the crude MI with the CDI. <2> The method for producing purified MI, comprising adding 0.5% by mass or more and 8% by mass or less of the CDI with respect to a mass of the crude MI for reaction. <3> The method for producing purified MI, wherein the CDI is N,N?-diisopropyl carbodiimide (DIC). <4> The method for producing purified MI, comprising removing a urea derivative of the CDI (CDI-U) by-produced when reacting the acid component in the crude MI with the CDI.Type: ApplicationFiled: September 29, 2020Publication date: January 14, 2021Applicant: UNITIKA LTD.Inventors: Yuki Yamada, Tatsuya Morikita, Yosuke Sugimoto, Takeshi Yoshida, Akira Shigeta, Yoshiaki Echigo
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Publication number: 20210002478Abstract: Provided is a resin composition formodeling materials for fused deposition modeling 3D printers, the resin composition containing a polyarylate resin (A) and a polyester resin (B), containing the component (A) and a polyamide resin (C), or containing tape component (A) and a polycarbonate resin (D).Type: ApplicationFiled: March 27, 2019Publication date: January 7, 2021Applicant: UNITIKA LTD.Inventors: Azusa Usui, Hiroo Kamikawa, Fumio Matsuoka, Shohei Kumazawa
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Patent number: 10876239Abstract: A primary base fabric for a tufted carpet includes a first non-woven web and a second non-woven web laminated on each other. The first non-woven web is constituted with a first constituent fiber formed with a first thermoplastic resin and containing carbon. The second non-woven web is constituted with a second constituent fiber formed with a second thermoplastic resin and having a carbon content lower than the carbon content of the first constituent fiber or containing no carbon. The primary base fabric is a product prepared by combining the first non-woven web and the second non-woven web through an emboss processing.Type: GrantFiled: April 10, 2017Date of Patent: December 29, 2020Assignee: Unitika Ltd.Inventor: Kenji Chizuka
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Publication number: 20200392298Abstract: 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: ApplicationFiled: December 26, 2018Publication date: December 17, 2020Applicant: UNITIKA LTD.Inventors: Takayoshi Okuzu, Akiko Hamamoto, Ken Akamatsu
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Publication number: 20200362144Abstract: The present invention provides a resin composition having high heat-resisting properties, with which a shaping can be performed in accordance with designed sizes using a fused deposition modeling method-3D printer, and from which a shaped object having a small warpage and small changes in sizes due to water can be obtained. The present invention relates to a resin composition for a shaping material of a fused deposition modeling method-3D printer, comprising cellulose fibers in a polyamide.Type: ApplicationFiled: October 29, 2018Publication date: November 19, 2020Applicant: UNITIKA LTD.Inventors: Miho NAKAI, Azusa USUI, Shohei KUMAZAWA, Shota NOGUCHI, Fumio MATSUOKA, Hiroo KAMIKAWA