Purity of 1,6-hexanediol
    1.
    发明授权
    Purity of 1,6-hexanediol 失效
    1,6-己二醇的纯度

    公开(公告)号:US5767329A

    公开(公告)日:1998-06-16

    申请号:US860604

    申请日:1997-07-01

    CPC分类号: C07C29/88 C07C55/14 C07C59/01

    摘要: Impurities are separated from aqueous solutions of 1,6-hexanediol or 1,6-hexanediol precursors, such as adipic and 6-hydroxycaproic acid, by a process which comprises adding at least one carboxylic acid to a solution (a) of 1,6-hexanediol and subjecting this solution (a) or a solution (b) containing carboxylic acid(s) as precursor(s) of 1,6-hexanediol to a heat treatment at temperatures above room temperature in the absence of hydrogen.

    摘要翻译: PCT No.PCT / EP96 / 00023 Sec。 371日期1997年7月1日 102(e)1997年7月1日PCT 1996年1月4日PCT PCT。 WO96 / 20909 PCT出版物 日期1996年7月11日通过包括向溶液中加入至少一种羧酸的方法(1)将方法与1,6-己二醇或1,6-己二醇前体如己二酸和6-羟基己酸的水溶液分离, )的1,6-己二醇,并将该溶液(a)或含有羧酸的溶液(b)作为1,6-己二醇的前体进行热处理,在不高于室温的温度下进行热处理 氢。

    Continuous production of cyclohexene from cyclohexyl esters
    2.
    发明授权
    Continuous production of cyclohexene from cyclohexyl esters 失效
    从环己基酯连续制备环己烯

    公开(公告)号:US5382740A

    公开(公告)日:1995-01-17

    申请号:US993053

    申请日:1992-12-18

    IPC分类号: C07B61/00 C07C1/213 C07C13/20

    摘要: A process for the continuous production of cyclohexene from a cyclohexyl ester of a carboxylic acid having 1 or 2 carbon atoms, which comprises the following steps:a) heating a cyclohexyl ester of a carboxylic acid having 1 or 2 carbon atoms in the presence of an acid catalyst with the formation of cyclohexene and a carboxylic acid having 1 or 2 carbon atoms;b) removing, by distillation, cyclohexene and carboxylic acid having 1 or 2 carbon atoms from the reaction mixture from stage a) at the same rate as they are formed;c) adding a cyclohexyl ester of a carboxylic acid having 1 or 2 carbon atoms to stage a) at the rate cyclohexene and carboxylic acid are distilled off; andd) separating the mixture comprising cyclohexene and carboxylic acid having 1 or 2 carbon atoms coming from stage b).

    摘要翻译: 一种由具有1或2个碳原子的羧酸的环己酯连续制备环己烯的方法,包括以下步骤:a)在存在下加成具有1或2个碳原子的羧酸的环己酯, 形成环己烯和具有1或2个碳原子的羧酸的酸催化剂; b)通过蒸馏从与所形成的相同速率从步骤a)的反应混合物中除去具有1或2个碳原子的环己烯和羧酸; c)将a)具有1或2个碳原子的羧酸的环己基酯以环己烯和羧酸的速率蒸馏出来; 和d)从步骤b)分离包含环己烯和具有1或2个碳原子的羧酸的混合物。

    Method for producing aliphatic alcohols
    5.
    发明授权
    Method for producing aliphatic alcohols 有权
    生产脂肪醇的方法

    公开(公告)号:US06204417B1

    公开(公告)日:2001-03-20

    申请号:US09423876

    申请日:1999-11-15

    IPC分类号: C07C3118

    摘要: In a process for preparing aliphatic alcohols by hydrogenating aliphatic carboxylic acids or anhydrides or esters thereof or lactones in the presence of a catalyst comprising Pt and Re, in the form of the metal or an oxide in each case, the catalyst further comprises at least one further element from the groups 5 to 12 and 14 and the lanthanides of the Periodic Table of the Elements in the form of the metal or an oxide.

    摘要翻译: 在通过在包含Pt和Re的催化剂的存在下,在每种情况下以金属或氧化物的形式加氢脂族羧酸或其酸酐或其酯或内酯的方法中,催化剂还包含至少一种 第5〜12和14族的元素,元素周期表的镧系元素为金属或氧化物。

    Process for preparing tetrahydrofuran from dialkoxybutenes
    6.
    发明授权
    Process for preparing tetrahydrofuran from dialkoxybutenes 失效
    从二烷氧基丁烯制备四氢呋喃的方法

    公开(公告)号:US06169189A

    公开(公告)日:2001-01-02

    申请号:US09180482

    申请日:1998-11-12

    IPC分类号: C07D30708

    摘要: A process for preparing tetrahydrofuran, which comprises reacting 1,4-butenediol diethers of the formulae I and/or II RO—CH2—CH═CH—CH2—OR  I RO—CH2—CH2═CH—CH2—OR  II, where the R radicals can be identical or different and are C1-C15-alkyl or cycloalkyl radicals, C6-C12-aryl radicals or C7-C15-aralkyl radicals, with water and hydrogen at from 20 to 300° C. under from 1 to 300 bar in the presence of catalysts or catalyst combinations which comprise components which are both capable of hydrogenation and have acidic or basic centers and a novel process for preparing 1,4-butanediol diethers of the formula I by metathesis are described.

    摘要翻译: 一种制备四氢呋喃的方法,其包括使式I和/或II的1,4-丁烯二醇二醚反应,其中R基团可以相同或不同,为C 1 -C 15 - 烷基或环烷基,C 6 -C 12 - 芳基或C 7 -C 15 - 芳烷基,其中水和氢在20-300℃,在1-300巴下,在催化剂或催化剂组合的存在下,其包含能够氢化并具有酸性或碱性中心的组分,以及新颖的 描述了通过复分解制备式I的1,4-丁二醇二醚的方法。

    Preparation of .gamma.-butyrolactone
    8.
    发明授权
    Preparation of .gamma.-butyrolactone 失效
    γ-丁内酯的制备

    公开(公告)号:US5646307A

    公开(公告)日:1997-07-08

    申请号:US640879

    申请日:1996-05-16

    CPC分类号: C07D315/00 Y02P20/582

    摘要: A process for the preparation of .gamma.-butyrolactone, in which 2,5-dihydrofuran or 2,3-dihydrofuran or a mixture of these two dihydrofurans is caused to react in the gas phase in the presence of water and in the presence or absence of additional hydrogen at elevated temperature over a hydrogenating catalyst.

    摘要翻译: PCT No.PCT / EP94 / 03683第 371日期:1996年5月16日 102(e)日期1996年5月16日PCT 1994年11月9日PCT公布。 WO95 / 14010 PCT出版物 日期1995年5月26日制备γ-丁内酯的方法,其中使2,5,5-二氢呋喃或2,3-二氢呋喃或这两种二氢呋喃的混合物在气相中在水的存在下反应, 在升高的温度下在氢化催化剂上存在或不存在另外的氢。

    Method for producing gamma-butyrolactone
    10.
    发明授权
    Method for producing gamma-butyrolactone 有权
    γ-丁内酯的制造方法

    公开(公告)号:US06521763B1

    公开(公告)日:2003-02-18

    申请号:US10069771

    申请日:2002-02-28

    IPC分类号: C07D30733

    CPC分类号: C07D307/33

    摘要: In a process for preparing GBL by reaction of 1,4 butanediol over a copper catalyst, use is made of a 1,4 butanediol-containing reaction mixture which comprises further alcohols other than 1,4-butanediol and water.

    摘要翻译: 在通过1,4-丁二醇与铜催化剂反应制备GBL的方法中,使用含有1,4-丁二醇的反应混合物,其还包含除1,4-丁二醇和水以外的其它醇。