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    CHLOROPRENE COPOLYMER LATEX AND PRODUCTION METHOD THEREFOR
    2.
    发明申请
    CHLOROPRENE COPOLYMER LATEX AND PRODUCTION METHOD THEREFOR 有权

    公开(公告)号：US20220227976A1

    公开(公告)日：2022-07-21

    申请号：US17615214

    申请日：2020-10-23

    Applicant: SHOWA DENKO K.K.

    Inventor： Shu KANEKO ,  Masahiro OGAWA ,  Akira SHIBUYA

    IPC: C08L11/02 ,  C08J5/02 ,  A61B42/10 ,  A41D19/04 ,  A41D19/00 ,  B29C41/14 ,  B29C41/00

    Abstract: One embodiment of the present invention relates to a chloroprene copolymer latex, a method for producing a chloroprene copolymer latex, a chloroprene copolymer latex composition, and a molded article or dipped product of a chloroprene copolymer rubber. The chloroprene copolymer latex is a latex of a chloroprene copolymer including monomer units derived from 2-chloro-1,3-butadiene (chloroprene) and monomer units derived from 2-methyl-1,3-butadiene, wherein the tetrahydrofuran insoluble content in the chloroprene copolymer is 20% by mass or less, and the proportion of the monomer units derived from 2-methyl-1,3-butadiene is 10 to 27 mol % in the chloroprene copolymer.

    ENE-THIOL-TYPE CURABLE COMPOSITION AND CURED PRODUCT THEREOF
    3.
    发明申请
    ENE-THIOL-TYPE CURABLE COMPOSITION AND CURED PRODUCT THEREOF 有权
    ENE-THIOL型可固化组合物及其固化产品

    公开(公告)号：US20160145392A1

    公开(公告)日：2016-05-26

    申请号：US14896692

    申请日：2014-06-11

    Applicant: SHOWA DENKO K.K.

    Inventor： Asuka TODA ,  Akira SHIBUYA

    IPC: C08G75/04

    CPC classification number: C08G75/045 ,  C08G75/04 ,  C08G75/12

    Abstract: An ene-thiol based curable composition according to the present invention includes: (A) a thiol compound having two or more groups represented by a following general formula (1) in the molecule; and (B) an ene oligomer having an alicyclic or aromatic ring structure and two or more ethylenically unsaturated groups in the molecule, with a number average molecular weight of 500 to 20,000 in terms of polystyrene. In the following general formula (1), each of R1 and R2 independently represents a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, or an aromatic group having 6 to 10 carbon atoms; a is an integer of 0 to 2; and b is 0 or 1.

    Abstract translation: 本发明的烯硫醇系固化性组合物包括：（A）分子中具有2个以上由以下通式（1）表示的基团的硫醇化合物; 和（B）分子中具有脂环族或芳香族环结构和两个以上烯键式不饱和基团的烯聚合物，其聚苯乙烯换算的数均分子量为500〜20000。 在下述通式（1）中，R 1和R 2各自独立地表示氢原子，碳原子数1〜10的烷基或碳原子数6〜10的芳香族基团。 a为0〜2的整数; b为0或1。

    METHOD FOR PRODUCING OROTIC ACID DERIVATIVE
    4.
    发明申请
    METHOD FOR PRODUCING OROTIC ACID DERIVATIVE 有权

    公开(公告)号：US20220002253A1

    公开(公告)日：2022-01-06

    申请号：US17291662

    申请日：2019-11-07

    Applicant: SHOWA DENKO K.K.

    Inventor： Motoki MURAI ,  Akira SHIBUYA

    IPC: C07D239/557

    Abstract: Provided is a method for producing an orotic acid derivative, the method comprising a condensation step of performing, under a basic condition, a condensation reaction between an orotic acid halide represented by General Formula (I) and a compound represented by General Formula (II) to generate an orotic acid derivative represented by General Formula (III); and a neutralization crystallization step of precipitating crystals of orotic acid by neutralization crystallization to separate a liquid containing the orotic acid derivative from the crystals of orotic acid, after the condensation step. In General Formula (I), (II), or (III), X is a halogen atom, and A is a group represented by General Formula (A-1) or (A-2). In General Formula (A-1) or (A-2), R1 is a hydrogen atom or an organic group, and R2 and R3 are each independently an organic group. In a case where R1 is an organic group, R1 and R2 may be bonded to each other to form a ring.

    ADHESIVE AGENT AND ADHESION METHOD
    6.
    发明申请
    ADHESIVE AGENT AND ADHESION METHOD 有权

    公开(公告)号：US20220243101A1

    公开(公告)日：2022-08-04

    申请号：US17618114

    申请日：2020-05-15

    Applicant: SHOWA DENKO K.K.

    Inventor： Naoki SEKIOKA ,  Akira SHIBUYA ,  Noriko OGAWA ,  Ryo MAKIO

    IPC: C09J111/02 ,  C09J7/38 ,  C09J7/24 ,  C09J11/08 ,  C09J11/04

    Abstract: There is provided an adhesive agent exhibiting high adhesive strength to polyolefin. An adhesive agent contains a chloroprene copolymer latex containing a chloroprene copolymer (A) and a metal oxide (B). The chloroprene copolymer (A) is a copolymer of a monomer group containing chloroprene (A-1), α,β-unsaturated carboxylic acid (A-2), and 2,3-dichloro-1,3-butadiene (A-3). The chloroprene copolymer (A) has a tetrahydrofuran-soluble component soluble in tetrahydrofuran and the weight average molecular weight of the tetrahydrofuran-soluble component is 80000 or more and 140000 or less. When the amount of the metal oxide (B) based on 100 parts by mass of the chloroprene copolymer (A) is defined as Y part(s) by mass and the weight average molecular weight of the tetrahydrofuran-soluble component is defined as X, the content of the metal oxide (B) satisfies Formula: −1.2×X/100000+1.6

    CHLOROPRENE COPOLYMER LATEX COMPOSITION AND MOLDED ARTICLE OF SAME
    7.
    发明申请
    CHLOROPRENE COPOLYMER LATEX COMPOSITION AND MOLDED ARTICLE OF SAME 有权

    公开(公告)号：US20220242987A1

    公开(公告)日：2022-08-04

    申请号：US17615286

    申请日：2020-12-24

    Applicant: SHOWA DENKO K.K.

    Inventor： Shu KANEKO ,  Masahiro OGAWA ,  Akira SHIBUYA

    IPC: C08F236/18 ,  B29C41/14 ,  B29C41/36 ,  A61B42/10 ,  A41D19/04 ,  C08K5/47 ,  C08K5/39 ,  C08K3/22 ,  C08K3/06 ,  C08K5/00

    Abstract: The present invention relates to a chloroprene copolymer latex composition, a molded article of chloroprene copolymer rubber, or a dip-molded product, and the chloroprene copolymer latex composition includes a chloroprene copolymer (A) and a vulcanization accelerator (B). The chloroprene copolymer (A) includes monomer units derived from chloroprene and from 2-methyl-1,3-butadiene. The chloroprene copolymer latex composition includes a carbamate-based vulcanization accelerator and a thiazole-based vulcanization accelerator as the vulcanization accelerator (B). The chloroprene copolymer latex composition enables production of a molded article having high flexibility and high tensile strength without use of a vulcanization accelerator that is feared to have skin sensitization.

    METHOD OF PRODUCING N,N-DISUBSTITUTED AMIDE AND CATALYST FOR PRODUCING N,N-DISUBSTITUTED AMIDE
    9.
    发明申请
    METHOD OF PRODUCING N,N-DISUBSTITUTED AMIDE AND CATALYST FOR PRODUCING N,N-DISUBSTITUTED AMIDE 有权

    公开(公告)号：US20210238123A1

    公开(公告)日：2021-08-05

    申请号：US17049792

    申请日：2019-04-25

    Applicant: SHOWA DENKO K.K.

    Inventor： Yasuyuki UEDA ,  Akira SHIBUYA ,  Hideo MIYATA ,  Hiroshi UCHIDA

    IPC: C07C231/06 ,  B01J31/02

    Abstract: A method of producing an N,N-disubstituted amide of the present invention is a method of reacting a nitrile with an alcohol in the presence of a catalyst, wherein the nitrile is a compound represented by R1CN (R1 represents an alkyl group having 10 or less carbon atoms or an aryl group having 10 or less carbon atoms), wherein the alcohol is a compound represented by R2OH (R2 represents an alkyl group having 10 or less carbon atoms), wherein the catalyst is a metal salt represented by MXn (M represents a metal cation having an oxidation number of n, X represents a monovalent anion including a substituted sulfonyl group represented by —S(═O)2—R3 (R3 represents a hydrocarbon group having 10 or less carbon atoms or a group in which some or all of hydrogen atoms in the hydrocarbon group are substituted with fluorine atoms), and n represents an integer of 1 to 4), a substituent bonded to a carbon atom in a carbonyl group of the N,N-disubstituted amide is R1, and two substituents bonded to nitrogen atoms in an amide group are both R2.

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