METHOD FOR PURIFYING 2,3,3,3-TETRAFLUOROPROPENE
    2.
    发明公开
    METHOD FOR PURIFYING 2,3,3,3-TETRAFLUOROPROPENE 有权
    程序对清洁2,3,3,3-四氟丙烯

    公开(公告)号:EP2671860A1

    公开(公告)日:2013-12-11

    申请号:EP12742392.9

    申请日:2012-02-03

    IPC分类号: C07C17/38 C07C21/18

    CPC分类号: C07C17/38 C07C21/18

    摘要: To provide a method for purifying R-1234yf, whereby it is possible to efficiently remove even impurities such as R-1243zf, etc. which are difficult to separate by distillation purification, from a mixture containing R-1234yf as the main component and various impurities, such as a gas formed by reacting R-1214ya with hydrogen. The method for purifying R-1234yf comprises a step of bringing a mixture which contains R-1234yf as the main component and also contains hydrohaloalkene impurities other than R-1234yf and hydrohaloalkane impurities, into contact with a solvent that has an extraction/removal index (r), as represented by the formula r = [4 × (δD - 17.2) 2 + (δP-8.3) 2 + (δH - 2.6) 2 ] 1/2 , of at most 6.5, so as to remove at least a part of the hydrohaloalkene impurities and hydrohaloalkane impurities.

    CROSSLINKABLE FLUORORUBBER COMPOSITION AND CROSSLINKED RUBBER ARTICLE
    4.
    发明授权
    CROSSLINKABLE FLUORORUBBER COMPOSITION AND CROSSLINKED RUBBER ARTICLE 有权
    VERNETZBARE FLUORKAUTSCHUKZUSAMMENSETZUNG UND VERNETZTER KAUTSCHUKARTIKEL

    公开(公告)号:EP2484722B1

    公开(公告)日:2013-12-11

    申请号:EP10820691.3

    申请日:2010-09-30

    摘要: To provide a crosslinkable fluororubber composition which can give a crosslinked rubber article excellent in flexibility at a low temperature, and the crosslinked rubber article. A crosslinkable fluororubber composition comprising a fluororubber and a compound represented by (X-) x (Z-) z Y, is crosslinked to form a crosslinked rubber article. In the formula, X is U-(CF 2 ) a O(CF 2 CF 2 O) b -, Z is R F O(CF 2 CF 2 O) c -, Y is a (x+z) valent perfluoro saturated hydrocarbon group or such a group having an etheric oxygen atom inserted between carbon atoms thereof, x is an integer of at least 3, z is an integer of at least 0, x+z is an integer of at least 3, U is a monovalent group having at least one member selected from the group consisting of an unsaturated hydrocarbon, a bromine atom and an iodine atom, R F is a C 1-20 linear perfluoroalkyl group or such a group having an etheric oxygen atom inserted between carbon atoms thereof, a is an integer of from 0 to 20, b is an integer of from 1 to 200, and c is an integer of from 3 to 200.

    摘要翻译: 提供一种交联性氟橡胶组合物,其可以得到在低温下柔软性优异的交联橡胶制品和交联橡胶制品。 包含氟橡胶和由(X-)x(Z-)z Y表示的化合物的交联性氟橡胶组合物交联以形成交联的橡胶制品。 在式中,X是U-(CF 2)a O(CF 2 CF 2 O)b - ,Z是RFO(CF 2 CF 2 O)c - ,Y是(x + z)价的全氟饱和烃基 或者在碳原子之间插入醚性氧原子的基团,x为3以上的整数,z为0以上的整数,x + z为3以上的整数,U为含有 选自不饱和烃,溴原子和碘原子的至少一种,RF是C 1-20直链全氟烷基,或者在其碳原子之间插入醚性氧原子的基团,a是 0〜20的整数,b为1〜200的整数,c为3〜200的整数。

    METHOD FOR MANUFACTURING 2,3,3,3-TETRAFLUOROPROPENE
    8.
    发明公开
    METHOD FOR MANUFACTURING 2,3,3,3-TETRAFLUOROPROPENE 有权
    制备2,3,3,3-四氟丙烯的方法

    公开(公告)号:EP2586758A1

    公开(公告)日:2013-05-01

    申请号:EP11798219.9

    申请日:2011-06-23

    IPC分类号: C07C17/23 C07C21/18 C07B61/00

    CPC分类号: C07C17/23 C07C21/18

    摘要: In the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf), formation of HFC-254eb as an excessively reduced product is suppressed.
    A process for producing 2,3,3,3-tetrafluoropropene, which comprises reacting a raw material compound composed of at least one of 1,1-dichloro-2,3,3,3-tetrafluoropropene and 1-chloro-2,3,3,3-tetrafluoropropene, and hydrogen, in a gas phase in the presence of a catalyst, wherein the catalyst is a palladium catalyst supported on active carbon, and the ratio of the hydrogen to the raw material compound to be introduced to a catalyst layer packed with the palladium-supporting active carbon is at most 0.7 as represented by the ratio of the number of moles of the hydrogen to the number of moles of chlorine atoms in the raw material compound (H 2 /Cl).

    摘要翻译: 在2,3,3,3-四氟丙烯(HFO-1234yf)的生产中,抑制了作为过度还原产物的HFC-254eb的形成。 一种生产2,3,3,3-四氟丙烯的方法,该方法包括使由至少一种1,1-二氯-2,3,3,3-四氟丙烯和1-氯-2,3 ,3,3-四氟丙烯和氢在气相中在催化剂存在下进行反应,其中所述催化剂是负载在活性炭上的钯催化剂,并且氢气与待引入催化剂的原料化合物的比例 由担载有钯的活性炭填充的层的摩尔数相对于原料化合物中的氯原子摩尔数(H2 / Cl)的比例表示为0.7以下。

    METHOD FOR MANUFACTURING 2,3,3,3-TETRAFLUOROPROPENE
    10.
    发明公开
    METHOD FOR MANUFACTURING 2,3,3,3-TETRAFLUOROPROPENE 有权
    制备2,3,3,3-四氟丙烯的方法

    公开(公告)号:EP2586761A1

    公开(公告)日:2013-05-01

    申请号:EP11798222.3

    申请日:2011-06-23

    IPC分类号: C07C17/23 C07C21/18 C07B61/00

    CPC分类号: C07C17/23 C07C21/18

    摘要: The object is to provide a process for producing highly pure 2,3,3,3-tetrafluoropropene, whereby formation of 3,3,3-trifluoropropene is suppressed.
    A process for producing 2,3,3,3-tetrafluoropropene, which comprises reacting a raw material compound composed of 1,1-dichloro-2,3,3,3-tetrafluoropropene and/or 1-chloro-2,3,3,3-tetrafluoropropene, and hydrogen in a gas phase in a reactor having a catalyst layer packed with a catalyst-supporting carrier, while maintaining the maximum temperature of the catalyst layer to be at most 130°C, to obtain formed gas containing 2,3,3,3-tetrafluoropropene, and then, contacting the formed gas discharged from the reactor, with alkali at a temperature of at most 100°C.

    摘要翻译: 本发明的目的是提供生产高纯度2,3,3,3-四氟丙烯的方法,由此抑制3,3,3-三氟丙烯的形成。 一种生产2,3,3,3-四氟丙烯的方法,该方法包括将由1,1-二氯-2,3,3,3-四氟丙烯和/或1-氯-2,3,3组成的原料化合物 在将催化剂层的最高温度保持在130℃以下的同时,在具有填充有催化剂负载载体的催化剂层的反应器中,在气相中将氢气,3-四氟丙烯和氢气加入到气相中, 然后使从反应器排出的生成气体与碱在至多100℃的温度下接触。