Process for the preparation of 3,4-dihalo-1,2-epoxybutanes
    3.
    发明授权
    Process for the preparation of 3,4-dihalo-1,2-epoxybutanes 失效
    制备3,4-二卤代-1,2-环氧丁烷的方法

    公开(公告)号:US5103028A

    公开(公告)日:1992-04-07

    申请号:US756687

    申请日:1991-09-09

    IPC分类号: C07D301/00 C07D303/08

    CPC分类号: C07D303/08

    摘要: Disclosed is a process for the preparation of 3,4-dichloro- and 3,4-dibromo-1,2-epoxybutane by the reaction of 3,4-epoxy-1-butane with chlorine or bromine in the presence of a quaternary ammonium or phosphonium halide compound. The reaction preferably is carried out by the addition of 3,4-epoxy-1-butane and chlorine or bromine to an organic, halogenation solvent containing chlorine or bromine and the quaternary compound.

    摘要翻译: 公开了在季铵盐存在下,通过3,4-环氧-1-丁烷与氯或溴反应制备3,4-二氯和3,4-二溴-1,2-环氧丁烷的方法 或卤化鏻化合物。 该反应优选通过向含有氯或溴的有机卤化溶剂和季铵化合物中加入3,4-环氧-1-丁烷和氯或溴来进行。

    Process for the preparation of 3,4-dihalo-1,2-epoxybutanes from
3,4-epoxy-1-butene
    4.
    发明授权
    Process for the preparation of 3,4-dihalo-1,2-epoxybutanes from 3,4-epoxy-1-butene 失效
    从3,4-环氧-1-丁烯制备3,4-二卤代-1,2-环氧丁烷的方法

    公开(公告)号:US5264595A

    公开(公告)日:1993-11-23

    申请号:US43072

    申请日:1993-04-05

    CPC分类号: C07D303/08

    摘要: Disclosed is a process for the preparation of 3,4-dichloro and 3,4-dibromo-1,2-epoxybutane by the reaction of 3,4-epoxy-1-butene with chlorine or bromine in the presence of a catalytic amount of a tertiary amine or a hydrohalide of a primary, secondary or tertiary amine. The reaction preferably is carried out by the addition of 3,4-epoxy-1-butene and chlorine or bromine to an organic, halogenation solvent containing chlorine or bromine and tertiary amine or amine hydrohalide catalyst.

    摘要翻译: 公开了通过3,4-环氧-1-丁烯与氯或溴在催化量的存在下反应制备3,4-二氯和3,4-二溴-1,2-环氧丁烷的方法 伯胺,仲胺或叔胺的叔胺或氢卤酸盐。 反应优选通过将3,4-环氧-1-丁烯和氯或溴加入到含有氯或溴的叔胺或叔胺或胺氢卤化物催化剂的有机卤化溶剂中进行。

    Polyether glycols and alcohols derived from 3,4-epoxy-1-butene
    6.
    发明授权
    Polyether glycols and alcohols derived from 3,4-epoxy-1-butene 失效
    衍生自3,4-环氧-1-丁烯的聚醚二醇和醇

    公开(公告)号:US5466759A

    公开(公告)日:1995-11-14

    申请号:US327951

    申请日:1994-10-24

    CPC分类号: C08G65/14 C08G65/322

    摘要: Disclosed are novel saturated polyether compounds comprised of n units of residue (1) and m units of residue (2), wherein (i) residues (1) and (2) have the structures: ##STR1## (ii) the total value of n+m is 2 to 70 and m/(n+m) is 0.05 to 0.98; (ii) at least 98 percent of the terminal hydroxyl groups of the polyether have the structure: ##STR2## The polyethers are obtained by first polymerizing 3,4-epoxy-1-butene to produce unsaturated polyether precursors comprising residues (1A) and (2A) having the structures: ##STR3## and then hydrogenating the unsaturated polyether precursors. The hydrogenation advantageously is performed in the presence of a nickel hydrogenation catalyst.

    摘要翻译: 公开了由n个残基(1)和m个残基(2)组成的新型饱和聚醚化合物,其中(i)残基(1)和(2)具有以下结构:(ⅱ) n + m为2〜70,m /(n + m)为0.05〜0.98。 (ii)聚醚的至少98%的末端羟基具有以下结构:聚醚是通过首先聚合3,4-环氧-1-丁烯制备不饱和聚醚前体而得到的,其包含残基(1A)和( 2A),具有以下结构:,然后氢化不饱和聚醚前体。 氢化有利地在镍氢化催化剂存在下进行。

    Polyether glycols and alcohols derived from 3,4-epoxy-1-butene
    7.
    发明授权
    Polyether glycols and alcohols derived from 3,4-epoxy-1-butene 失效
    衍生自3,4-环氧-1-丁烯的聚醚二醇和醇

    公开(公告)号:US5434314A

    公开(公告)日:1995-07-18

    申请号:US181736

    申请日:1994-01-18

    摘要: Disclosed are novel polyether compounds obtained by the reaction or polymerization of 3,4-epoxy-1-butene in the presence of an acidic catalyst and a nucleophilic initiator compound. The polyether compounds comprise n units of residue (1) and m units of residue (2), wherein the total value of n+m is 2 to 70, n/(n+m) is a value in the range of 0.70 to 0.95, and residues (1) and (2) have the structures: ##STR1##

    摘要翻译: 公开了在酸性催化剂和亲核引发剂化合物的存在下通过3,4-环氧-1-丁烯的反应或聚合获得的新型聚醚化合物。 聚醚化合物包含n个残基(1)单元和m个残基(2),其中n + m的总值为2〜70,n /(n + m)为0.70〜0.95的范围内的值 ,残基(1)和(2)具有以下结构:(1)OCH2CHCHCH2(2)

    Process for producing saturated polyether glycols and alcohols derived
from 3, 4-epoxy-1-butene
    8.
    发明授权
    Process for producing saturated polyether glycols and alcohols derived from 3, 4-epoxy-1-butene 失效
    制备由3,4-环氧-1-丁烯衍生的饱和聚醚二醇和醇的方法

    公开(公告)号:US5608117A

    公开(公告)日:1997-03-04

    申请号:US520356

    申请日:1995-08-28

    CPC分类号: C08G65/14 C08G65/322

    摘要: Disclosed are novel saturated polyether compounds comprised of n units of residue (1) and m units of residue (2), wherein (i) residues (1) and (2) have the structures: ##STR1## (ii) the total value of n+m is 2 to 70 and m/(n+m) is 0.05 to 0.98; (ii) at least 98 percent of the terminal hydroxyl groups of the polyether have the structure: ##STR2## The polyethers are obtained by first polymerizing 3,4-epoxy-l-butene to produce unsaturated polyether precursors comprising residues (1A) and (2A) having the structures: ##STR3## and then hydrogenating the unsaturated polyether precursors. The hydrogenation advantageously is performed in the presence of a nickel hydrogenation catalyst.

    摘要翻译: 公开了由n个残基(1)和m个残基(2)组成的新型饱和聚醚化合物,其中(i)残基(1)和(2)具有以下结构:(1)和OCH 2 CH 2 CH 2 CH 2 )(ii)n + m的总值为2〜70,m /(n + m)为0.05〜0.98; (ii)聚醚的末端羟基的至少98%具有以下结构:聚醚是通过首先聚合3,4-环氧-1-丁烯制备不饱和聚醚前体而得到的,其包含残基(1A)和( 2A),其结构如下:(1A)OCH2CHCHCH2(2A),然后氢化不饱和聚醚前体。 氢化有利地在镍氢化催化剂存在下进行。

    Process for the separation of oligomeric materials from a catalyst
mixture
    9.
    发明授权
    Process for the separation of oligomeric materials from a catalyst mixture 失效
    从催化剂混合物中分离低聚材料的方法

    公开(公告)号:US5238889A

    公开(公告)日:1993-08-24

    申请号:US926421

    申请日:1992-08-10

    摘要: Disclosed is a process for the recovery of catalyst values from mixtures of catalyst compounds and oligomeric materials. The process provides for the separation of (i) an onium iodide compound, (ii) an organotin iodide compound, or (iii) a mixture thereof from a mixture thereof in an oligomer of a .gamma.,.delta.-epoxy-alkene by the steps of (1) intimately contacting the mixture with an extraction solvent selected from hydrocarbons having about 5 to 12 carbon atoms; (2) allowing the mixture of step (1) to separate into 2 phases; and (3) recovering the extraction solvent phase containing iodide compounds (i) and (ii). The oligomer mixture of compounds (i) and/or (ii) is formed during the manufacture of 2,5-dihydrofurans by the isomerization of .gamma.,.delta.-epoxyalkenes.

    摘要翻译: 公开了从催化剂化合物和低聚材料的混合物中回收催化剂值的方法。 该方法提供了(i)碘化iodide化合物,(ⅱ)有机锡碘化合物或(ⅲ)其混合物在γ,δ-环氧 - 烯烃的低聚物中的混合物,其步骤为 (1)使混合物与选自具有约5至12个碳原子的烃的萃取溶剂紧密接触; (2)使步骤(1)的混合物分离成2相; 和(3)回收含碘化合物(i)和(ii)的萃取溶剂相。 化合物(i)和/或(ii)的低聚物混合物是通过γ,δ-环氧乙烷的异构化在制造2,5-二氢呋喃期间形成的。