COPOLYMER
    1.
    发明公开
    COPOLYMER 审中-公开

    公开(公告)号:EP4101871A1

    公开(公告)日:2022-12-14

    申请号:EP21750745.8

    申请日:2021-02-04

    摘要: Provided is a copolymer consisting essentially of ethylene units, tetrafluoroethylene units, and hexafluoropropylene units, wherein a molar ratio (Et units/TFE units) of the ethylene (Et) units to the tetrafluoroethylene (TFE) units is 52.0/48.0 to 56.0/44.0, and a content of the hexafluoropropylene units is 19.0 to 21.0 mol% based on the total monomer units constituting the copolymer.

    SULFURIC ACID ESTER OR SALT THEREOF, AND SURFACTANT

    公开(公告)号:EP3514142A1

    公开(公告)日:2019-07-24

    申请号:EP17856397.9

    申请日:2017-09-29

    IPC分类号: C07C305/04 C09K3/00

    摘要: The invention provides a novel sulfuric acid ester containing a plurality of carbonyl groups or a salt thereof, and a surfactant. The sulfuric acid ester is a compound represented by the following formula:

            R 1 -C(=O)-R 2 -C(=O)-R 3 -OSO 3 X

    wherein R 1 is a linear or branched alkyl group containing one or more carbon atoms or a cyclic alkyl group containing three or more carbon atoms, with a hydrogen atom that binds to a carbon atom being optionally replaced by a hydroxy group or a monovalent organic group containing an ester bond, the alkyl group optionally containing a carbonyl group when containing two or more carbon atoms, and the alkyl group optionally containing a monovalent or divalent heterocycle or being optionally in a cyclized form when containing three or more carbon atoms; R 2 and R 3 are each individually a single bond or a divalent linking group; R 1 , R 2 , and R 3 contain six or more carbon atoms in total; X is H, a metal atom, NR 4 4 , imidazolium optionally containing a substituent, pyridinium optionally containing a substituent, or phosphonium optionally containing a substituent, where R 4 s are each H or an organic group and are the same as or different from each other; and any two of R 1 , R 2 , and R 3 optionally bind to each other to form a ring.

    PEROXIDE CROSS-LINKED FLUORINE-CONTAINING ELASTOMER COMPOSITION
    9.
    发明公开
    PEROXIDE CROSS-LINKED FLUORINE-CONTAINING ELASTOMER COMPOSITION 有权
    过氧化物FLUOR含氟弹性体成分

    公开(公告)号:EP2264100A1

    公开(公告)日:2010-12-22

    申请号:EP09725238.1

    申请日:2009-03-18

    摘要: The present invention provides a fluorine-containing elastomer composition of which viscosity can be decreased without increasing an amount of expensive monomer while maintaining physical properties in normal state of a branched fluorine-containing elastomer. The composition is a peroxide-crosslinkable fluorine-containing elastomer composition comprising (A) a branched fluorine-containing elastomer having peroxide-crosslinkable cure site, which has a number average molecular weight of from 1,000 to 300,000 and a Mark-Houwink gradient "a" of less than 0.6 when an absolute weight molecular weight and an intrinsic viscosity are plotted on a Mark-Houwink plot having an axis of abscissa of absolute weight molecular weight and an axis of ordinate of intrinsic viscosity, and (B) a straight chain type fluorine-containing polymer having a number average molecular weight of from 1,000 to 250,000 and a Mark-Houwink gradient "a" of not less than 0.6.

    WELDED BODY
    10.
    发明公开
    WELDED BODY 审中-公开

    公开(公告)号:EP4035872A1

    公开(公告)日:2022-08-03

    申请号:EP20869961.1

    申请日:2020-08-04

    IPC分类号: B29C65/02 F16L47/02

    摘要: The present invention provides a welded body having a connecting structure formed by welding a first molded body and a second molded body, wherein the first and second molded bodies contain at least one copolymer selected from the group consisting of a tetrafluoroethylene/fluoro(alkyl vinyl ether) copolymer and a tetrafluoroethylene/hexafluoropropylene copolymer, and wherein the connecting structure has a liquid contact surface to be in contact with a liquid having a solubility parameter of 14 to 35 (MPa) 1/2 , a welded part formed in the connecting structure is not exposed to the liquid contact surface, and the number of particles of 30 nm or larger to be eluted from the liquid contact surface in the connecting structure is 1,000 particles/ml or less.