Fluoroelastomer composition having excellent processability
    1.
    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

    Abstract: 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.

    Abstract translation: 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。

    Grafted fluoroelastomers
    3.
    发明授权
    Grafted fluoroelastomers 有权
    接枝含氟弹性体

    公开(公告)号:US07342074B2

    公开(公告)日:2008-03-11

    申请号:US11811755

    申请日:2007-06-12

    Abstract: Polyhydroxy curable fluoroelastomers that are substantially free of nucleophilic endgroups are grafted with a monophenol having at least one pendant group. The resulting grafted fluoroelastomers retain most of the properties of the original elastomers including excellent pre-vulcanization characteristics, while incorporating pendant groups which may be used for further modification, crosslinking or for changing the physical properties (e.g. Tg) of the fluoroelastomer.

    Abstract translation: 基本上不含亲核端基的多羟基固化性含氟弹性体用具有至少一个侧基的单酚接枝。 所得接枝的含氟弹性体保留原始弹性体的大部分性质,包括优异的预硫化特性,同时加入可用于进一步改性,交联或改变物理性质的侧基(例如T“ )的含氟弹性体。

    Curable base-resistant fluoroelastomers
    4.
    发明授权
    Curable base-resistant fluoroelastomers 失效
    可固化耐碱性含氟弹性体

    公开(公告)号:US06916887B2

    公开(公告)日:2005-07-12

    申请号:US10404368

    申请日:2003-04-01

    CPC classification number: C08F214/265 C08K5/0025 C08K5/13 C08L27/12

    Abstract: A base resistant, substantially amorphous fluoroelastomer comprising (1) 10-40 mole percent ethylene units, (2) 32-60 mole percent tetrafluoroethylene units, (3) 20-40 mole percent perfluoro ether units selected from the group consisting of perfluoro(alkyl vinyl ethers), perfluoro(alkyl alkenyl ethers) and perfluoro(alkoxy alkenyl ethers), and (4) 0.1 to 15 mole percent of a cure site monomer selected from the group consisting of i) perfluoroalkyl ethylenes and ii) perfluoroalkoxy ethylenes. Such fluoroelastomers may be vulcanized with polyhydroxy curing agents. The resulting vulcanized fluoroelastomers are resistant to attack by amines, strong bases and hydrogen sulfide and possess a combination of good low temperature and high temperature properties and they are resistant to oil swell.

    Abstract translation: 包含(1)10-40摩尔%乙烯单元,(2)32-60摩尔%四氟乙烯单元,(3)20-40摩尔%全氟醚单元的碱性电阻基本无定形含氟弹性体,其选自全氟(烷基 乙烯基醚),全氟(烷基烯基醚)和全氟(烷氧基烯基醚),和(4)选自i)全氟烷基乙烯和ii)全氟烷氧基乙烯的固化部位单体0.1至15摩尔%。 这种含氟弹性体可以用多羟基固化剂硫化。 得到的硫化含氟弹性体耐受胺,强碱和硫化氢的侵蚀,具有良好的低温和高温性能的组合,并且耐油膨胀。

    Curable base-resistant fluoroelastomers
    5.
    发明授权
    Curable base-resistant fluoroelastomers 有权
    可固化耐碱性含氟弹性体

    公开(公告)号:US06887959B2

    公开(公告)日:2005-05-03

    申请号:US10670086

    申请日:2003-09-24

    CPC classification number: C08F214/262 C08K5/0025 C08K5/136 C08L27/12

    Abstract: A base resistant, substantially amorphous fluoroelastomer comprising (1) 10-40 mole percent ethylene units, (2) 32-60 mole percent tetrafluoroethylene units, (3) 20-40 mole percent perfluoro ether units selected from the group consisting of perfluoro(alkyl vinyl ethers), perfluoro(alkyl alkenyl ethers) and perfluoro(alkoxy alkenyl ethers), and (4) 0.1 to 15 mole percent of a cure site monomer selected from the group consisting of i) 3,3,3-trifluoropropene-1, ii) trifluoroethylene, iii) 1,2,3,3,3-pentafluoropropylene, iv) 1,1,3,3,3-pentafluoropropylene, and v) 2,3,3,3-tetrafluoropropene. Such fluoroelastomers may be vulcanized with polyhydroxy curatives. The resulting vulcanized fluoroelastomer compositions are resistant to attack by amines, strong bases and hydrogen sulfide and possess a combination of good low temperature and high temperature properties and they are resistant to oil swell.

    Abstract translation: 包含(1)10-40摩尔%乙烯单元,(2)32-60摩尔%四氟乙烯单元,(3)20-40摩尔%全氟醚单元的碱性电阻基本无定形含氟弹性体,其选自全氟(烷基 乙烯基醚),全氟(烷基烯基醚)和全氟(烷氧基烯基醚),和(4)选自i)3,3,3-三氟丙烯-1, ii)三氟乙烯,iii)1,2,3,3,3-五氟丙烯,iv)1,1,3,3,3-五氟丙烯和v)2,3,3,3-四氟丙烯。 这种含氟弹性体可以用多羟基固化剂硫化。 得到的硫化含氟弹性体组合物耐胺,强碱和硫化氢的侵蚀,具有良好的低温和高温特性的组合,并且耐油膨胀。

    Curable perfluoroelastomer composition
    6.
    发明授权
    Curable perfluoroelastomer composition 有权
    可固化的全氟弹性体组合物

    公开(公告)号:US06281296B1

    公开(公告)日:2001-08-28

    申请号:US09366979

    申请日:1999-08-04

    CPC classification number: C08K5/0025 C08K5/18 C08L27/12

    Abstract: Perfluoroelastomer compositions comprising perfluoroelastomers having copolymerized units of tetrafluoroethylene, a perfluoro(vinyl ether), and a nitrile-containing cure site monomer are cured with compounds that are capable of generating ammonia at temperatures of 40° C.-330° C. to produce cured compositions having excellent thermal stability. The ammonia-generating compounds also act as cure accelerators in perfluoroelastomer compositions that incorporate other curing agents.

    Abstract translation: 包含具有四氟乙烯,全氟(乙烯基醚)和含腈固化部位单体的共聚单元的全氟弹性体的全氟弹性体组合物在能够在40℃-330℃的温度下产生氨的化合物固化以产生固化 组合物具有优异的热稳定性。 产生氨的化合物还用作结合其它固化剂的全氟弹性体组合物中的固化促进剂。

    Sulfonated perfluoroelastomer composition having improved processability
    8.
    发明授权
    Sulfonated perfluoroelastomer composition having improved processability 失效
    具有改进加工性能的磺化全氟弹性体组合物

    公开(公告)号:US5874523A

    公开(公告)日:1999-02-23

    申请号:US971955

    申请日:1997-11-17

    CPC classification number: C08K5/0025 C08F8/00 C08F2800/20

    Abstract: Curable perfluoroelastomer compositions are prepared in the presence of an initiator system comprising a mixture of a persulfate salt and a reducing agent wherein the amount of reducing agent present is no more than 20 mole percent of the total initiator system. The perfluoroelastomer is isolated and decarboxylated, thereby providing a product having excellent processability.

    Abstract translation: 在包含过硫酸盐和还原剂的混合物的引发剂体系的存在下制备可固化的全氟弹性体组合物,其中存在的还原剂的量不超过总引发剂体系的20摩尔%。 全氟弹性体被分离和脱羧,从而提供具有优异加工性能的产品。

    Curable base-resistant fluoroelastomers

    公开(公告)号:US06703450B2

    公开(公告)日:2004-03-09

    申请号:US10137914

    申请日:2002-05-02

    CPC classification number: C08F214/265

    Abstract: Compositions of specialty fluoroelastomers containing copolymerized units of tetrafluoroethylene, propylene, optionally vinylidene fluoride, and a cure site monomer selected from the group consisting of i) trifluoroethylene, ii) 3,3,3-trifluoropropene-1, iii) 1,2,3,3,3-pentafluoropropylene, iv) 1,1,3,3,3-pentafluoropropylene, and v) 2,3,3,3-tetrafluoropropene are readily curable with polyhydroxy curing systems. The resulting cured articles have a combination of excellent resistance to alkaline fluids, superior tensile properties and compression set resistance.

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