中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

150 records (took 0.017 seconds)

    WATER PURIFIER CARTRIDGE, WATER PURIFIER INCLUDING THE SAME, AND WATER PURIFYING MEMBER
    33.
    发明公开
    WATER PURIFIER CARTRIDGE, WATER PURIFIER INCLUDING THE SAME, AND WATER PURIFYING MEMBER 审中-公开

    公开(公告)号：US20230249985A1

    公开(公告)日：2023-08-10

    申请号：US18012372

    申请日：2021-06-09

    Applicant: UNITIKA LTD.

    Inventor： Shinji TANIGUCHI

    IPC: C02F1/00

    CPC classification number: C02F1/003 ,  C02F2201/006 ,  C02F2307/02 ,  C02F1/28

    Abstract: The present invention is a water purifier cartridge to be attached to a container including a water storage portion having an opening at an upper portion thereof, and a lid that has an outlet for discharging water stored in the water storage portion and is configured to close the opening of the water storage portion, the cartridge including: a support including a circumferential wall portion formed in a cylindrical shape and a closing portion that closes one end portion in an axial direction of the circumferential wall portion and in which an air hole is formed, another end portion in the axial direction being open; and a filter member that is supported by the support so as to extend along the circumferential wall portion.

    METHOD FOR PRODUCING POLYAMIDE RESIN FILM
    35.
    发明申请
    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

    Applicant: UNITIKA LTD.

    Inventor： Akiko Kurosawa ,  Atsuko Noda

    IPC: C08J5/18 ,  C08J11/10 ,  C08L77/02 ,  B32B27/34

    Abstract: 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.

    METHOD FOR THERMAL MOLDING OF FILAMENT PRODUCT
    37.
    发明申请
    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

    Applicant: UNITIKA LTD.

    Inventor： Kohei IKEDA ,  Mariko HONDA ,  Yuta MIZUNO ,  Shohei IKEGAMI

    IPC: D02G3/04 ,  D01F8/12 ,  D01F8/14 ,  D01D5/10 ,  D04B1/16 ,  D04H3/045

    Abstract: 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.

    Process for producing needle-punched nonwoven fabric
    38.
    发明授权
    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

    Applicant: UNITIKA LTD.

    Inventor： Kazutoshi Hanaya ,  Toru Takahashi ,  Hideaki Kaminokado ,  Masaya Akao ,  Yusuke Nagatsuka

    IPC: D04H1/485 ,  D04H1/4382 ,  D04H1/541 ,  A47L13/16 ,  D04H1/435 ,  D04H1/559

    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.

    POLYARYLATE RESIN, FILM FORMED FROM SAME AND LAMINATE
    39.
    发明申请
    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

    Applicant: UNITIKA LTD.

    Inventor： Akira MURATA ,  Takamasa AKIZUKI ,  Chiho MATSUMOTO ,  Keita HAGIWARA

    IPC: C08L67/03 ,  C08G63/185 ,  C08G63/195 ,  B32B27/36

    Abstract: 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.).

    Bismaleimide modified product and method for producing the same
    40.
    发明授权
    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

    Applicant: UNITIKA LTD.

    Inventor： Yuki Yamada ,  Tatsuya Morikita ,  Takeshi Yoshida ,  Akira Shigeta ,  Yoshiaki Echigo

    IPC: C07D207/448

    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: 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.

Patent Agency Ranking