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1. 发明授权

US11608427B2 Resin composition for shaping material of fused deposition modeling method-3D printer and filamentary molded body thereof 有权
公开(公告)号：US11608427B2
公开(公告)日：2023-03-21
申请号：US16757581
申请日：2018-10-29
申请人： UNITIKA LTD.
发明人： Miho Nakai , Azusa Usui , Shohei Kumazawa , Shota Noguchi , Fumio Matsuoka , Hiroo Kamikawa
IPC分类号： C08K7/02 , B33Y70/00 , B29C64/314 , B33Y40/10 , C08L77/00 , B33Y80/00 , B29K77/00 , B29K201/00
摘要： 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.

2. 发明申请

US20230054022A1 METHOD FOR PRODUCING POLYAMIDE RESIN FILM 有权
公开(公告)号：US20230054022A1
公开(公告)日：2023-02-23
申请号：US17794030
申请日：2021-01-22
申请人： UNITIKA LTD.
发明人： Akiko Kurosawa , Atsuko Noda
IPC分类号： C08J5/18 , C08J11/10 , C08L77/02 , B32B27/34
摘要： To provide a method for producing a polyamide resin film by using a polyamide resin obtained through polymerization of a regenerated monomer used as a recycled material. Provided is a method for producing a polyamide resin film, including: (1) a step of producing a monomer from a raw material (A) for depolymerization, (2) a step of producing a polyamide resin (B) through polymerization using a raw material containing the monomer. (3) a step of refining the polyamide resin (B), and (4) a step of producing an unstretched film using a starting material containing the refined polyamide resin (B), and stretching the unstretched film.

3. 发明申请

US20220056229A1 LAMINATED FILM AND METHOD FOR MANUFACTURING SAME 有权
公开(公告)号：US20220056229A1
公开(公告)日：2022-02-24
申请号：US17428781
申请日：2020-02-19
申请人： UNITIKA LTD.
发明人： Takashi Okabe , Nobuyasu Okumura , Masafumi Yamamoto , Kumi Ashihara , Midori Shimomura , Yoshimi Ueno
IPC分类号： C08J7/04 , C08J5/18 , C08L77/06 , G02B1/14
摘要： 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 μm; 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.

4. 发明申请

US20210395926A1 METHOD FOR THERMAL MOLDING OF FILAMENT PRODUCT 有权
公开(公告)号：US20210395926A1
公开(公告)日：2021-12-23
申请号：US17279877
申请日：2019-09-26
申请人： UNITIKA LTD.
发明人： Kohei IKEDA , Mariko HONDA , Yuta MIZUNO , Shohei IKEGAMI
IPC分类号： D02G3/04 , D01F8/12 , D01F8/14 , D01D5/10 , D04B1/16 , D04H3/045
摘要： Provided is a thermal molding method for producing a thermally molded article having excellent abrasion resistance at its melt-fused part. Polyamide 6 and a copolyester are prepared separately. The copolyester contains terephthalic acid, ethylene glycol, and 1,4-butanediol as copolymerization units. The copolyester may further contain ε-caprolactone and/or diethylene glycol as a copolymerization unit. A multifilament yarn in which core-sheath type composite filaments each containing a core component and a sheath component at a ratio of 1 to 4:1 by mass are bundled is produced by a composite melt-spinning method using the polyamide 6 as the core component and the copolyester as the sheath component. Using the multifilament yarn, a product of filaments is produced by weaving, knitting, knitting and braiding, or braiding. The product of filaments is heated to melt the copolyester and fuse the core-sheath type composite filaments to each other while retaining the initial filament form of the polyamide 6, thus thermally molding the product of filaments.

5. 发明授权

US11186931B2 Process for producing needle-punched nonwoven fabric 有权
公开(公告)号：US11186931B2
公开(公告)日：2021-11-30
申请号：US16603937
申请日：2018-04-10
申请人： UNITIKA LTD.
发明人： Kazutoshi Hanaya , Toru Takahashi , Hideaki Kaminokado , Masaya Akao , Yusuke Nagatsuka
IPC分类号： D04H1/485 , D04H1/4382 , D04H1/541 , A47L13/16 , D04H1/435 , D04H1/559
摘要： [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.

6. 发明申请

US20200325329A1 POLYARYLATE RESIN, FILM FORMED FROM SAME AND LAMINATE 审中-公开
公开(公告)号：US20200325329A1
公开(公告)日：2020-10-15
申请号：US16304079
申请日：2017-05-23
申请人： UNITIKA LTD.
发明人： Akira MURATA , Takamasa AKIZUKI , Chiho MATSUMOTO , Keita HAGIWARA
IPC分类号： C08L67/03 , C08G63/185 , C08G63/195 , B32B27/36
摘要： The present invention provides a polyarylate resin which is excellent in heat-resisting properties, abrasion-resisting properties, solubility properties in non-halogenated organic solvents, a water vapor-barrier property, mechanical properties, liquid sag-resisting properties and deformation-resisting properties (such as adhesive properties). The present invention relates to a polyarylate resin comprising a dihydric phenol residue shown in general formula (1) and an aromatic dicarboxylic acid residue shown in general formula (2), a film comprising the same and a laminated product thereof: (wherein X represents a liner or branched bivalent hydrocarbon group having 4 to 8 carbon atoms.) (wherein R1 and R2 respectively and independently represent a monovalent hydrocarbon group having 1 to 6 carbon atoms, which may be substituted by one or more halogen atoms, or a halogen atom, and p and q respectively and independently represent an integer of 0 to 4.).

7. 发明授权

US10759753B2 Bismaleimide modified product and method for producing the same 有权
公开(公告)号：US10759753B2
公开(公告)日：2020-09-01
申请号：US16011077
申请日：2018-06-18
申请人： UNITIKA LTD.
发明人： Yuki Yamada , Tatsuya Morikita , Takeshi Yoshida , Akira Shigeta , Yoshiaki Echigo
IPC分类号： C07D207/448
摘要： 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: 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. A method for producing D-BMI, the method including the following steps: 1) A step of preparing a crude D-BMI solution having an acid value of more than 2 mg-KOH/g. 2) A step of lowering an acid value of D-BMI to 2 mg-KOH/g or less by reacting an acid component in the solution with a carbodiimide compound. 3) A step of reacting the solution without a catalyst at 110 to 200° C. in a solvent.

8. 发明授权

US10522274B2 Ferromagnetic metal nanowire dispersion and method for manufacturing same 有权
公开(公告)号：US10522274B2
公开(公告)日：2019-12-31
申请号：US15305514
申请日：2015-04-17
申请人： UNITIKA LTD.
发明人： Hirotaka Takeda , Hayami Onishi , Terumasa Yoshinaga
IPC分类号： H01F1/00 , C09D7/40 , C09D5/24 , C09D101/28 , C09D139/06 , H01B1/02 , C08K3/08 , C08K7/06
摘要： The present invention provides a ferromagnetic metal nanowire dispersion having an excellent dispersibility, from which a ferromagnetic metal nanowire film having an excellent electrical conductivity can be made. The present invention relates to a ferromagnetic metal nanowire dispersion comprising a ferromagnetic metal nanowire and a polymer compound.

9. 发明申请

US20190184317A1 AIR FILTER MATERIAL 审中-公开
公开(公告)号：US20190184317A1
公开(公告)日：2019-06-20
申请号：US16223999
申请日：2018-12-18
申请人： UNITIKA LTD.
发明人： Yukihiro KIHARA
IPC分类号： B01D39/16 , B01D46/54 , B32B5/02 , B32B5/26 , B32B7/12
CPC分类号： B01D39/163 , B01D39/1623 , B01D46/546 , B01D2239/025 , B01D2239/0618 , B01D2239/0668 , B01D2239/0681 , B01D2239/1233 , B01D2239/1291 , B01D2275/10 , B32B5/022 , B32B5/26 , B32B7/12 , B32B2262/0253 , B32B2262/0276 , B32B2307/724
摘要： Spun bond nonwoven fabric comprises, as constituting filament, conjugate polyester continuous filaments having a cross-sectional shape of a nearly “Y4”-like shape. The continuous filament is composed of a nearly V-shape portion 6 in the nearly Y4-like shape, formed from low melting point polyester, and the other nearly+shape portion 5 therein, formed from high melting point polyester. The continuous filaments are heat-bonded with each other by the low melting point polyester. The spun bond nonwoven fabric is bonded by a powder type or spider web type hot melt adhesive agent with the melt blown nonwoven fabric.

10. 发明授权

US10286597B2 Polyester film, laminate, and method for producing polyester film 有权
公开(公告)号：US10286597B2
公开(公告)日：2019-05-14
申请号：US15762652
申请日：2016-10-03
申请人： UNITIKA LTD.
发明人： Ken Akamatsu , Masami Matsumoto
IPC分类号： B32B7/12 , B32B15/08 , B32B15/09 , B32B27/36 , B32B37/12 , B29C48/08 , B29C55/12 , B29C55/14 , B29D7/01 , C08L67/02 , C08L67/03 , B29C48/00 , C08J5/18 , B29C47/00 , B29C55/00 , B29C71/02 , B29K67/00 , B29K509/02 , B29L7/00
摘要： The present invention provides a polyester film, wherein an arbitrary direction on the film surface is defined to have an angle of 0°, and three directions are defined to have angles of 45°, 90°, and 135°, respectively, clockwise from the 0° direction, and the difference between the maximum value and the minimum value of the stresses at 5% elongation in the four directions is 50 MPa or less, the difference between the maximum value and the minimum value of the stresses at 15% elongation in the four directions is 70 MPa or less, and the modulus of elasticity in any one of the four directions falls within a range from 2.0 to 3.5 GPa.

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