Method for distilling mixtures containing butanediol
    1.
    发明授权
    Method for distilling mixtures containing butanediol 有权
    蒸馏含丁二醇的混合物的方法

    公开(公告)号:US06387224B1

    公开(公告)日:2002-05-14

    申请号:US09623109

    申请日:2000-08-29

    IPC分类号: B01D334

    摘要: A process for the separation by distillation of a mixture of 1,4-butanediol and at least one 4-hydroxybutyraldehyde, its cyclic hemiacetal and its cyclic full acetals with at least one further alcohol by carrying out the distillation in the presence of an alkaline compound. The mixture to be separated preferably contains a cyclic full acetal of 4-hydroxybutyraldehyde with a further alcohol which has a lower boiling point than butanediol and also the further alcohol in free form. The process is particularly suitable for the separation by distillation of mixtures formed in the hydrogenation of maleic acid derivatives.

    摘要翻译: 通过在碱性化合物的存在下进行蒸馏来通过蒸馏分离1,4-丁二醇和至少一种4-羟基丁醛的混合物的方法,其环状半缩醛和其环状全缩醛与至少一种其它醇进行蒸馏 。 要分离的混合物优选含有4-羟基丁醛的环状全缩醛,另外具有低于丁二醇的沸点的醇,还有另外的游离形式的醇。 该方法特别适用于通过蒸馏分离在马来酸衍生物的氢化中形成的混合物。

    Method for producing cyclopentanone and cyclopentene-1-carboxylic acid and their esters
    2.
    发明授权
    Method for producing cyclopentanone and cyclopentene-1-carboxylic acid and their esters 失效
    环戊酮和环戊烯-1-羧酸及其酯的制备方法

    公开(公告)号:US06316659B1

    公开(公告)日:2001-11-13

    申请号:US09508008

    申请日:2000-03-07

    IPC分类号: C07C6974

    摘要: A process for preparing cyclopentanone and cyclopentene-1-carboxylic acid or an ester thereof of the formula I where R is hydrogen or an aliphatic radical having 1-6 carbon atoms or a cycloaliphatic, araliphatic or aromatic radical having 6-12 carbon atoms comprises heating a compound of the formula II X—(CH2)4—COOR  II where X is formyl or hydroxymethyl and R is defined as above, and/or a compound which is converted into a compound of the formula II by reaction with water or alcohols ROH under the reaction conditions to from 200 to 450° C. in the gas or liquid phase in the presence of a heterogeneous oxidic catalyst.

    摘要翻译: 制备式I的环戊酮和环戊烯-1-羧酸或其酯的方法,其中R是氢或具有1-6个碳原子的脂族基团或具有6-12个碳原子的脂环族,芳脂族或芳族基团包括加热 式II的化合物,其中X是甲酰基或羟甲基,R如上定义,和/或在反应条件下与水或醇ROH反应转化为式II化合物的化合物为200-450℃ 在气相或液相中存在非均相氧化催化剂。

    Preparation of tetrahydrofuran
    3.
    发明授权
    Preparation of tetrahydrofuran 有权
    四氢呋喃的制备

    公开(公告)号:US06316640B1

    公开(公告)日:2001-11-13

    申请号:US09396356

    申请日:1999-09-15

    IPC分类号: C07D30708

    CPC分类号: C07D307/08 Y02P20/582

    摘要: In a process for preparing THF (tetrahydrofuran) by reaction of a 1,4-butanediol-containing reaction mixture over an acid catalyst, the reaction mixture comprises further alcohols different from 1,4-butanediol and is essentially free of water.

    摘要翻译: 在通过在酸催化剂上通过含1,4-丁二醇的反应混合物反应制备THF(四氢呋喃)的方法中,反应混合物包含与1,4-丁二醇不同的基本上不含水的其它醇。

    Preparation of alcohols
    4.
    发明授权
    Preparation of alcohols 失效
    醇的制备

    公开(公告)号:US6140545A

    公开(公告)日:2000-10-31

    申请号:US251462

    申请日:1999-02-17

    IPC分类号: C07C29/149 C07C37/08

    CPC分类号: C07C29/149 C07C2101/14

    摘要: In a process for preparing alcohols by gas phase hydrogenation of carboxylic acids or esters thereof at elevated temperature and elevated pressure in the presence of catalysts consisting of or comprising, as hydrogenating components, oxides of main group VI and/or subgroup IV, the hydrogenation is carried outa) at from 250.degree. C. to 400.degree. C. and from 5 bar to 100 bar in the presence ofb) primary or secondary alcohols, the molar hydrogen/alcohol ratio being at most 800.

    摘要翻译: 在通过在升高的温度和升高的压力下,在由主要VI族和/或第IV族的氧化物组成或包含氢化组分的催化剂存在下,在羧酸或其酯的气相氢化制备醇的方法中,氢化是 在b)伯醇或仲醇的存在下,在250℃至400℃和5巴至100巴下进行a),氢/醇摩尔比为至多800。

    Preparation of halogen-free, reactive polyisobutene
    5.
    发明授权
    Preparation of halogen-free, reactive polyisobutene 失效
    无卤素,反应性聚异丁烯的制备

    公开(公告)号:US06384154B1

    公开(公告)日:2002-05-07

    申请号:US09744256

    申请日:2001-01-31

    IPC分类号: C08F11010

    摘要: A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 60 mol % and an average molecular weight Mn of 800-3000 dalton by cationic polymerization in the liquid phase of isobutene over an acidic, essentially halogen-free heterogeneous catalyst, where a) a hydrocarbon mixture of essentially C4-hydrocarbons comprising isobutene in an amount of from 10 to 80% by weight is used as the starting material and b) polymerization is carried out continuously at from −30 to 0° C. with average starting material residence times of one hour or less, where the temperature and the residence time are selected such that the isobutene conversion is less than 60% and, after separation from the resulting polyisobutene, the isobutene is either enriched in the partially converted hydrocarbon mixture and returned to the polymerization or passed to another isobutene reaction coupled with the polymerization.

    摘要翻译: 一种通过阳离子聚合在异丁烯液相中酸性,基本上不含卤素的方式制备末端双键含量大于60mol%,平均分子量Mn为800-3000道尔顿的无卤素的活性聚异丁烯的方法 非均相催化剂,其中将基本上含有10-80重量%异丁烯的C 4烃的烃混合物用作原料,和b)在-30℃至0℃下连续进行聚合,平均 起始材料停留时间为1小时或更短,其中选择温度和停留时间使得异丁烯转化率小于60%,并且在从所得聚异丁烯分离后,异丁烯富含部分转化的烃混合物, 返回聚合反应或通过与聚合偶联的另一异丁烯反应。

    Method for producing cyclopentanone
    6.
    发明授权
    Method for producing cyclopentanone 失效
    环戊酮生产方法

    公开(公告)号:US06429339B1

    公开(公告)日:2002-08-06

    申请号:US09700365

    申请日:2000-11-15

    IPC分类号: C07C4500

    摘要: A process for preparing cyclopentanone by reacting adipic esters of the formula R1OOC—(CH2)4—COOR2  I where R1 and R2 are each alkyl having from 1 to 12 carbon atoms, cycloalkyl having 5 or 6 carbon atoms, aralkyl or aryl and R2 may additionally be hydrogen, in the presence of oxidic catalysts comprises reacting adipic esters of the formula I having less than 5% by weight of by-products other than adipic esters in the gas phase in the presence of water, a carrier gas and a) from 0.01 to 10% by weight of at least one metal oxide selected from the first or second main group of the periodic table or from the group of the rare earth metals on titanium dioxide or zirconium dioxide as catalyst support, or b) from 0.01 to 50% by weight of at least one metal oxide selected from the second main group of the periodic table on zink oxide as catalyst support.

    摘要翻译: 通过使式R 1和R 2的己二酸酯反应制备环戊酮的方法各自是在氧化催化剂存在的情况下,可以另外为氢,其中R 1和R 2各自为具有1至12个碳原子的烷基,具有5或6个碳原子的环烷基或芳基, 包括使式I的己二酸酯在水,载气的存在下,在气相中具有小于5重量%的除己二酸酯之外的副产物,和(ii)0.01至10重量%的至少一种金属 氧化物,其选自周期表的第一或第二主族,或者来自稀土金属的二氧化钛或二氧化锆的组,作为催化剂载体,orb)为0.01至50重量%的至少一种选自 氧化锌作为催化剂载体的周期表第二主要组。

    Method of producing 1,4-butanediol and tetrahydrofuran from furan
    10.
    发明授权
    Method of producing 1,4-butanediol and tetrahydrofuran from furan 失效
    从呋喃生产1,4-丁二醇和四氢呋喃的方法

    公开(公告)号:US5905159A

    公开(公告)日:1999-05-18

    申请号:US913440

    申请日:1997-09-16

    摘要: 1,4-butanediol and THF are prepared from furan by a process which comprises converting furan in the presence of water and hydrogen but in the absence of a water-soluble acid in a single stage over a hydrogenation catalyst, the hydrogenation catalyst containing at least one element of subgroup I, V, VI, VII or VIII in the form of a compound or in elemental form and the restriction that the catalyst does not contain nickel alone being applicable.

    摘要翻译: PCT No.PCT / EP96 / 01247 371日期:1997年9月16日 102(e)日期1997年9月16日PCT Filted 1996年3月21日PCT公布。 出版物WO96 / 29322 1991年9月26日,1991年4月26日,4-丁二醇和THF由呋喃制备,该方法包括在水和氢存在下转化呋喃,但在氢化催化剂的单一阶段不存在水溶性酸, 含有化合物或元素形式的亚组I,V,VI,VII或VIII中的至少一种元素的氢化催化剂以及催化剂不含有镍的限制是适用的。