METHOD FOR THE PURIFICATION OF POLY(ARYLENE ETHERS)
    5.
    发明申请
    METHOD FOR THE PURIFICATION OF POLY(ARYLENE ETHERS) 有权
    聚丙烯(ARYLENE ETHERS)的纯化方法

    公开(公告)号:US20160075825A1

    公开(公告)日:2016-03-17

    申请号:US14786986

    申请日:2014-04-22

    IPC分类号: C08G65/46 C08G65/40

    摘要: The invention relates to a method for the purification of poly(arylene ethers) of formula (I) in which m=0 to 1.0, n=1.0-m, and Ar1, Ar2, Ar3 and Ar4 independently represent divalent arylene groups. The compound of formula (I) is produced in a first step 1, with a raw product being obtained by bringing a metal or ammonium salt of divalent dihydroxy derivatives of Ar1 or Ar3 into contact with one or more dihalogenated derivatives of Ar2 and/or Ar4, in the presence of a solvent LM1. A precipitate that is present, if appropriate, is separated (step B) so as to obtain a solution L which then undergoes a membrane filtration (step C).

    摘要翻译: 本发明涉及一种纯化式(I)的聚(亚芳基醚)的方法,其中m = 0至1.0,n = 1.0-m,Ar1,Ar2,Ar3和Ar4独立地表示二价亚芳基。 在第一步骤1中制备式(I)化合物,其中通过使Ar1或Ar3的二价二羟基衍生物的金属或铵盐与一种或多种Ar 2和/或Ar 4的二卤代衍生物接触而得到 ,在溶剂LM1存在下。 如果合适,存在沉淀物(步骤B),得到溶液L,然后进行膜过滤(步骤C)。

    Process for the epoxidation of cyclic alkenes
    7.
    发明授权
    Process for the epoxidation of cyclic alkenes 有权
    环烯烃的环氧化方法

    公开(公告)号:US06861540B2

    公开(公告)日:2005-03-01

    申请号:US10683047

    申请日:2003-10-14

    CPC分类号: C07D301/12 C07D303/04

    摘要: The epoxidation of cyclic, at least monounsaturated alkenes is conducted by a process, which comprises conducting the epoxidation of a cyclic, at least monounsaturated alkene in the presence of an oxidant in a reaction medium that contains at least 1% by weight of the saturated cyclic alkane corresponding to the cyclic, at least monounsaturated alkene. In a preferred embodiment the reaction medium contains at least 2.5% by weight of the saturated cyclic alkane corresponding to the cyclic, at least monounsaturated alkene.

    摘要翻译: 环状至少单不饱和烯烃的环氧化是通过一种方法进行的,该方法包括在氧化剂存在下在反应介质中进行环状至少单不饱和烯烃的环氧化,所述反应介质含有至少1重量%的饱和环状 对应于环状至少单不饱和烯烃的烷烃。 在优选的实施方案中,反应介质含有至少2.5重量%的对应于环状至少单不饱和烯烃的饱和环烷烃。

    SYNTHESIS OF ALPHA,OMEGA-DICARBOXYLIC ACIDS AND ESTERS THEREOF FROM UNSATURATED FATTY ACID DERIVATIVES
    10.
    发明申请
    SYNTHESIS OF ALPHA,OMEGA-DICARBOXYLIC ACIDS AND ESTERS THEREOF FROM UNSATURATED FATTY ACID DERIVATIVES 失效
    从不饱和脂肪酸衍生物合成ALPHA,欧米二酸和其酯

    公开(公告)号:US20120245375A1

    公开(公告)日:2012-09-27

    申请号:US13424548

    申请日:2012-03-20

    IPC分类号: C07C67/44

    摘要: A process for preparing an alpha, omega-dicarboxylic acid or an ester thereof, which includes (a) subjecting at least one unsaturated fatty acid or fatty acid derivative to ozonolysis to obtain an ozonolysis reaction mixture; and (b) oxidizing the ozonolysis reaction mixture with an oxidizing agent in the presence of an acid catalyst to obtain an oxidized reaction mixture comprising at least one alpha, omega-dicarboxylic acid or ester; wherein the process is performed using a solvent and the acid catalyst has a pKa of less than or equal to zero, as measured at 25° C.

    摘要翻译: 一种制备α,ω-二羧酸或其酯的方法,其包括(a)使至少一种不饱和脂肪酸或脂肪酸衍生物进行臭氧分解以获得臭氧分解反应混合物; 和(b)在酸催化剂存在下用氧化剂氧化臭氧分解反应混合物,得到包含至少一种α,ω-二羧酸或酯的氧化反应混合物; 其中所述方法使用溶剂进行,并且所述酸催化剂的pKa小于或等于零,如在25℃下测量的。