Process for preparing fluoropolymer
    51.
    发明授权
    Process for preparing fluoropolymer 有权
    制备含氟聚合物的方法

    公开(公告)号:US06469217B2

    公开(公告)日:2002-10-22

    申请号:US09845888

    申请日:2001-04-30

    IPC分类号: C07C4311

    摘要: The polymerization initiator-containing solution obtained by mixing a specific perfluorodicarboxylic acid fluoride (A) with CsF in an aprotic polar solvent with stirring to conduct reaction and thereby form a polymerization initiator (B) and then allowing the reaction solution to stand for not less than 72 hours at a temperature of 0 to 30° C. A polymerization initiator-containing solution comprises a specific polymerization initiator (B′) and an aprotic polar solvent. The process for preparing a perfluoropolyether comprises polymerizing hexafluoropropylene oxide in the presence of the polymerization initiator-containing solution.

    摘要翻译: 通过在搅拌下将特定的全氟二羧酸氟化物(A)与CsF混合在搅拌下得到的含聚合引发剂的溶液进行反应,从而形成聚合引发剂(B),然后使反应溶液静置不少于 在0〜30℃的温度下72小时。含聚合引发剂的溶液包含特定的聚合引发剂(B')和非质子极性溶剂。 制备全氟聚醚的方法包括在含聚合引发剂的溶液的存在下聚合六氟环氧丙烷。

    Process for producing fluorine-containing block copolymer
    53.
    发明授权
    Process for producing fluorine-containing block copolymer 失效
    含氟嵌段共聚物的制造方法

    公开(公告)号:US6160051A

    公开(公告)日:2000-12-12

    申请号:US315771

    申请日:1999-05-20

    CPC分类号: C08F261/06 C08F214/22

    摘要: A fluorine-containing copolymer having a solvent resistance and a cold resistance is produced by subjecting vinylidene fluoride and at least one of other fluorine-containing monomers to copolymerization reaction in the presence of a polyfluoropolyether having iodo groups at both terminals, represented by the following formula:I(R)pCF(CF.sub.3)O[CF.sub.2 CF(CF.sub.3)O]mRf[OCF(CF.sub.3)CF.sub.2 ]nOCF(CF.sub.3)(R)pIwherein Rf: perfluoroalkylene group of C.sub.2 -C.sub.6 ; R: alkylene group or polyfluoroalkylene group of C.sub.2 -C.sub.8 ; these alkylene groups may contain an ether bond or may be an alkyleneamide-containing or phenylene diamide-containing group; m+n: 20 or more; and p: 0 or 1. The copolymerization reaction is carried out preferably in the presence of a bromine-containing or iodine-containing monomer compound.

    摘要翻译: 具有耐溶剂性和耐寒性的含氟共聚物通过在具有两端具有碘基的多氟聚醚的存在下,将下列式(1)表示的偏二氟乙烯和其它含氟单体中的至少一种进行共聚反应来制造: :C(CF 3)O] m R f [OCF(CF 3)CF 2] n OCF(CF 3)(R)p I其中R 1表示C 1 -C 6的全氟亚烷基; R:C2-C8的亚烷基或多氟亚烷基; 这些亚烷基可以含有醚键,也可以是含有亚烷基酰胺或亚苯基二酰胺的基团。 m + n:20以上; 和p:0或1.共聚反应优选在含溴或含碘单体化合物的存在下进行。

    Process for producing fluorine-containing elastomer
    55.
    发明授权
    Process for producing fluorine-containing elastomer 失效
    含氟弹性体的制造方法

    公开(公告)号:US6011129A

    公开(公告)日:2000-01-04

    申请号:US113736

    申请日:1998-07-10

    CPC分类号: C08F214/24 C08F214/222

    摘要: Fluorine-containing elastomers produced through copolymerization reaction of vinylidene fluoride, tetrafluoroethylene, perfluoro(lower alkyl vinyl ether) and chlorotrifluoroethylene in the presence of a bromine-containing monomer compound and an iodine- and bromine-containing compound, where hexafluoropropene can be further copolymerized, have not only a distinguished resistance to amine-based additives and also distinguished low-temperature characteristic and engine oil resistance, and also a lower cost attained by reduced copolymer proportion of perfluoro(lower alkyl vinyl ether).

    摘要翻译: 在含溴单体化合物和含碘和溴的化合物存在下,可以进一步共聚六氟丙烯,通过偏二氟乙烯,四氟乙烯,全氟(低级烷基乙烯基醚)和氯三氟乙烯的共聚反应制备的含氟弹性体, 不仅对胺类添加剂具有显着的抵抗性,还具有显着的低温特性和发动机耐油性,而且通过降低全氟(低级烷基乙烯基醚)的共聚物比例也可以降低成本。

    Fluorine-containing copolymer elastomer process for producing the same
and composition containing the same
    57.
    发明授权
    Fluorine-containing copolymer elastomer process for producing the same and composition containing the same 失效
    含氟共聚物弹性体制造方法及含有该共聚物的组合物

    公开(公告)号:US5910552A

    公开(公告)日:1999-06-08

    申请号:US818819

    申请日:1997-03-14

    摘要: A novel fluorine-containing copolymer elastomer having bromine groups as cross-linkable groups, which comprises about 45 to about 80% by mole of tetrafluoroethylene, about 50 to about 20% by mole of a perfluoro(vinylether) represented by the following general formula:CF.sub.2 .dbd.CFO(CF.sub.2).sub.2 (OCF.sub.2)nOCF.sub.3where n is an integer of 1 to 5, and about 0.2 to about 5% by mole of a bromine-containing unsaturated monomer compound, sum total being 100% by mole, gives vulcanization products having distinguished resistances to chemicals, low temperature and heat.

    摘要翻译: 具有溴基作为可交联基团的新型含氟共聚物弹性体,其包含约45至约80摩尔%的四氟乙烯,约50至约20摩尔%的由以下通式表示的全氟(乙烯基醚): CF 2 = CFO(CF 2)2(OCF 2)n OCF 3,其中n为1〜5的整数,以及约0.2〜约5摩尔%的含溴不饱和单体化合物,总和为100摩尔%,得到硫化产物 对化学品,耐低温和耐热性的抵抗力。

    Process for producing fluorine-containing elastomer
    58.
    发明授权
    Process for producing fluorine-containing elastomer 失效
    含氟弹性体的制造方法

    公开(公告)号:US5898054A

    公开(公告)日:1999-04-27

    申请号:US980236

    申请日:1997-11-28

    摘要: A peroxide-vulcanizable fluorine-containing elastomer containing iodines as cross-linking sites, capable of producing vulcanization products having a distinguished heat resistance is produced by polymerization reaction of a fluorinated olefin having 2 to 8 carbon atoms in the presence of a diiodide compound represented by the following general formula:I--R--where R is a divalent fluorohydrocarbon group, chlorofluorohydrocarbon group or hydrocarbon group, having 2 to 8 carbon atoms, respectively, and 2,2-difluoroiodoethylene.

    摘要翻译: 通过在二碘化合物的存在下,在具有2-8个碳原子的氟化烯烃存在下,通过聚合反应制备含有碘作为交联位点的可过氧化物硫化的含氟弹性体,其能够生产具有显着耐热性的硫化产物, 以下通式:IR-其中R是二价氟代烃基,分别具有2-8个碳原子的氯氟烃基或烃基和2,2-二氟碘乙烯。