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    PROCESS FOR PRODUCING FLUOROPOLYMER
    6.
    发明公开
    PROCESS FOR PRODUCING FLUOROPOLYMER 有权
    VERFAHREN ZUR HERSTELLUNG VON FLUORPOLYMER

    公开(公告)号：EP1553104A4

    公开(公告)日：2005-09-28

    申请号：EP03765355

    申请日：2003-07-23

    申请人： DAIKIN IND LTD

    发明人： IRIE MASAKI ,  TOKUNO SATOSHI ,  IRIE SADASHIGE ,  NISHIMURA YOSUKE ,  HORI YOSHINORI ,  KISHINE MITSURU

    IPC分类号： C08F2/00 ,  C08F14/18 ,  C08F214/18 ,  C08F214/22

    CPC分类号： C08F2/00 ,  C08F214/18 ,  C08F214/22

    摘要： A process for producing a fluoropolymer reduced in the content of branches and in weight change at high temperatures. It is a novel process substantially free from compositional distribution. It is a batch copolymerization process conducted under such conditions that the reduced temperature and reduced pressure obtained from the critical constants calculated with the Peng-Robinson equation from the critical temperature, critical pressure, and proportion of each monomer present in the vapor phase inside the reaction vessel are 0.95 or higher and 0.80 or higher, respectively. In the process, the proportions by weight of the additional monomers, i.e., ingredients A1, A2, ... An, are calculated using the equation (a1 - a'1 x B):(a2 - a'2 x B) ... (an - a'n x B) [wherein n is the number of kinds of monomer units in the target polymer; a1, a2, ... an (%) are the percentages by weight of the respective kinds of monomer units in the target polymer composition; a'1, a'2, ... a'n (%) are the percentages by weight of the respective monomer ingredients in the initial monomer composition; and B is the ratio of the specific gravity of vapor-phase monomers during polymerization to that of the target polymer]. Additional monomers comprising the additional monomers in those proportions by weight are added to produce a fluoropolymer.

    摘要翻译： 生产含氟聚合物的方法降低了树枝的含量和在高温下的重量变化。 这是一个基本上没有成分分布的新颖流程。 它是在这样的条件下进行的间歇共聚方法，即由临界常数由临界温度，临界压力和存在于反应内部的气相中的每种单体的比例用彭 - 罗宾森方程计算得到的临界常数获得的降低的温度和减压 容器分别为0.95或更高和0.80或更高。 在该过程中，使用等式（a1-a'1×B）：（a2-a'2×B）计算另外的单体，即组分A1，A2，...... An的重量比例。 （an-a'n×B）[其中n是目标聚合物中单体单元的种类数目; a1，a2，... an（％）是目标聚合物组合物中各种单体单元的重量百分数; a'1，a'2，... a'n（％）是初始单体组合物中各单体成分的重量百分数; B是聚合过程中汽相单体的比重与目标聚合物的比重]。 以这些重量比例包含另外的单体的另外的单体被加入以产生含氟聚合物。

    MOLDING MATERIAL
    7.
    发明公开
    MOLDING MATERIAL 有权
    成型材料

    公开(公告)号：EP1029875A4

    公开(公告)日：2001-05-02

    申请号：EP98951691

    申请日：1998-11-05

    申请人： DAIKIN IND LTD

    发明人： KISHINE MITSURU ,  KITAICHI MASANORI ,  NOGUCHI TSUYOSHI ,  TANAKA YOSHITO ,  ARAKI TAKAYUKI ,  IRIE SADASHIGE

    IPC分类号： C08F293/00 ,  C09K3/10 ,  C08L53/00 ,  H01L21/00

    CPC分类号： C08F293/00 ,  C09K3/1009

    摘要： A molding material for use as a sealing material or the like for, e.g., production apparatuses associated with semiconductors, which comprises a polymer made up of fluorinated segments of different kinds and is excellent in mechanical properties (especially at high temperatures, etc.), wearing resistance, and transparency and reduced in pollution and gas permeability while retaining the flexibility, elasticity, sealing properties, chemical resistance, and heat resistance inherent in fluoroelastomers. The molding material comprises a polymer which is made up of fluorinated segments of different kinds consisting of one or more elastomeric fluoropolymer chain segments capable of imparting flexibility to the whole polymer and one or more non-elastomeric fluoropolymer chain segments and in which the content of perfluoroolefin structural units is 95 mol% or higher.