Crosslinked fluoropolymer networks
    5.
    发明授权
    Crosslinked fluoropolymer networks 失效
    交联氟聚合物网络

    公开(公告)号:US08394870B2

    公开(公告)日:2013-03-12

    申请号:US12504320

    申请日:2009-07-16

    IPC分类号: C08F16/24

    摘要: Disclosed herein is a crosslinked fluoropolymer network formed by the free radical initiated crosslinking of a diacrylate fluoropolymer The diacrylate copolymer is of formula CH2═CR′COO—(CH2)n—R—(CH2)n—OOCR′═CH2, wherein R is selected from the group consisting of i) an oligomer comprising copolymerized units of vinylidene fluoride and perfluoro(methyl vinyl ether), ii) an oligomer comprising copolymerized units of vinylidene fluoride and hexafluoropropylene, iii) an oligomer comprising copolymerized units of tetrafluoroethylene and perfluoro(methyl vinyl ether), and iv) an oligomer comprising copolymerized units of tetrafluoroethylene and a hydrocarbon olefin, R′ is H or —CH3, n is 1-4 and wherein said oligomer has a number average molecular weight of 1000 to 25,000 daltons. The source of the free radicals may be a photoinitiator or an organic peroxide.

    摘要翻译: 本文公开了通过二丙烯酸酯含氟聚合物的自由基引发交联形成的交联的氟聚合物网络。二丙烯酸酯共聚物具有式CH 2 = CR'COO-(CH 2)n -R-(CH 2)n -OOCR' = CH 2,其中R为 选自i)包含偏二氟乙烯和全氟(甲基乙烯基醚)的共聚单元的低聚物,ii)包含偏二氟乙烯和六氟丙烯的共聚单元的低聚物,iii)包含四氟乙烯和全氟(甲基)丙烯的共聚单元的低聚物 乙烯基醚),和iv)包含四氟乙烯和烃烯烃的共聚单元的低聚物,R'是H或-CH 3,n是1-4,并且其中所述低聚物的数均分子量为1000-25,000道尔顿。 自由基的来源可以是光引发剂或有机过氧化物。

    PROCESS FOR PRODUCING FLUOROPOLYMERS
    6.
    发明申请
    PROCESS FOR PRODUCING FLUOROPOLYMERS 有权
    生产氟聚合物的方法

    公开(公告)号:US20090186969A1

    公开(公告)日:2009-07-23

    申请号:US12354218

    申请日:2009-01-15

    IPC分类号: C08K5/51

    摘要: An emulsion polymerization process for the production of non-elastomeric fluoropolymers is disclosed wherein at least one fluorosurfactant is employed as dispersant, said fluorosurfactant being a fluoroalkylphosphoric acid ester of the formula X-Rf-(CH2)n—O—P(O)(OM)2, wherein n is 1 or 2, X═H or F, M=a univalent cation, and Rf is a C4-C6 fluoroalkyl or fluoroalkoxy group. Optionally, a second dispersing agent may be employed in the polymerization, said second agent being a perfluoropolyether having at least one endgroup selected from the group consisting of carboxylic acid, a salt thereof, sulfonic acid and a salt thereof, phosphoric acid and a salt thereof.

    摘要翻译: 公开了用于制备非弹性体含氟聚合物的乳液聚合方法,其中使用至少一种含氟表面活性剂作为分散剂,所述含氟表面活性剂是式X-Rf-(CH2)nOP(O)(OM)2的氟代烷基磷酸酯, 其中n为1或2,XH或F,M =单价阳离子,Rf为C4-C6氟代烷基或氟代烷氧基。 任选地,在聚合中可以使用第二分散剂,所述第二试剂是具有至少一个选自羧酸,其盐,磺酸及其盐的端基的全氟聚醚,磷酸及其盐 。

    PROCESS FOR PRODUCING FLUOROPOLYMERS
    7.
    发明申请
    PROCESS FOR PRODUCING FLUOROPOLYMERS 失效
    生产氟聚合物的方法

    公开(公告)号:US20090124754A1

    公开(公告)日:2009-05-14

    申请号:US12255082

    申请日:2008-10-21

    IPC分类号: C08F16/24 C08K5/36

    摘要: An emulsion polymerization process for the production of fluoropolymers is disclosed wherein a combination of at least two fluorosurfactants is employed as dispersants. At least one fluorosurfactant is a perfluoroalkyl or perfluoroalkoxy sulfinate. At least one other fluorosurfactant is a perfluoropolyether having at least one endgroup selected from the group consisting of carboxylic acid, a slat thereof, sulfonic acid and a salt thereof.

    摘要翻译: 公开了用于生产含氟聚合物的乳液聚合方法,其中使用至少两种含氟表面活性剂的组合作为分散剂。 至少一种含氟表面活性剂是全氟烷基或全氟烷氧基亚磺酸酯。 至少一种其它含氟表面活性剂是具有至少一个选自羧酸,其盐,磺酸及其盐的端基的全氟聚醚。

    Fluoroelastomer composition having excellent processability
    8.
    发明授权
    Fluoroelastomer composition having excellent processability 失效
    具有优异加工性能的氟弹性体组合物

    公开(公告)号:US06610790B2

    公开(公告)日:2003-08-26

    申请号:US09815067

    申请日:2001-03-22

    IPC分类号: C08F800

    摘要: Fluoroelastomers which contain copolymerized units of a fluoroolefin cure site monomer of the general formula: Rf—(CH2CF2)n—CH═CF2, wherein Rf is a C1-C6 perfluoroalkyl group or a C1-C6 perfluoroalkoxy group and n is an integer from 1-3, exhibit excellent physical properties and processability when cured with polyhydroxy compounds.

    摘要翻译: 含有以下通式的氟烯烃固化位点单体的共聚单元的氟弹性体:其中Rf是C1-C6全氟烷基或C1-C6全氟烷氧基,n是1-3的整数,当固化时表现出优异的物理性能和加工性 与多羟基化合物。