-
公开(公告)号：US5416240A
公开(公告)日：1995-05-16
申请号：US24903
申请日：1993-03-02
CPC分类号： C08G65/20
摘要： Polyoxyalkylene glycols are prepared by a process in which tetrahydrofuran is polymerized with a total of not more than 95 mol %, based on the amount of tetrahydrofuran used, of one or more comonomers from the group consisting of the cyclic ethers and acetals in the absence of water and in the presence of a monohydric alcohol or of a monocarboxylic acid with the aid of an anhydrous heteropoly acid catalyst, and the polyoxyalkylene glycol is liberated from the resulting polyoxyalkylene glycol monoethers or polyoxyalkylene glycol monoesters by cleavage of the monoether or monoester bond.
摘要翻译： 聚氧亚烷基二醇通过以下方法制备，其中四氢呋喃基于所用四氢呋喃的总量不超过95摩尔％，在不存在共聚单体的情况下聚合来自由环醚和缩醛组成的组中的一种或多种共聚单体 水和一元醇或单羧酸存在下，借助于无水杂多酸催化剂，通过裂解单醚或单酯键，从所得聚氧亚烷基二醇单醚或聚氧亚烷基二醇单酯中释放出聚氧亚烷基二醇。
-
2.发明授权
公开(公告)号：US5659068A
公开(公告)日：1997-08-19
申请号：US255549
申请日：1994-05-31
CPC分类号： C08G65/20
摘要： Polyoxyalkylene glycol monoesters of carboxylic acids are prepared by a process in which tetrahydrofuran or a mixture of tetrahydrofuran with a total of not more than 95 mol %, based on the amount of tetrahydrofuran used, of one or more comonomers from the group consisting of the cyclic ethers and acetals is polymerized in the absence of water and in the presence of a carboxylic acid and of an anhydrous heteropolyacid catalyst.
摘要翻译： 羧酸的聚氧化亚烷基二醇单酯通过以下方法制备：其中四氢呋喃或四氢呋喃的混合物，总共不超过95摩尔％，基于所用四氢呋喃的一种或多种共聚单体来自由环状 醚和缩醛在不存在水和羧酸和无水杂多酸催化剂的存在下聚合。
-
公开(公告)号：US5414143A
公开(公告)日：1995-05-09
申请号：US24904
申请日：1993-03-02
CPC分类号： C08G65/20
摘要： Polyoxyalkylene glycol monoethers of monohydric alcohols are prepared by a process in which tetrahydrofuran or a mixture of tetrahydrofuran with a total of not more than 95 mol %, based on the amount of tetrahydrofuran used, of one or more comonomers from the group consisting of the cyclic ethers and acetals is polymerised in the absence of water and in the presence of a monohydric alcohol and of an anhydrous heteropoly acid catalyst.
摘要翻译： 一元醇的聚氧亚烷基二醇单醚通过以下方法制备，其中四氢呋喃或四氢呋喃的混合物，总共不超过95摩尔％，基于所用四氢呋喃的一种或多种共聚单体来自由环状 醚和缩醛在不存在水和在一元醇和无水杂多酸催化剂的存在下聚合。
-
4.发明授权Preparation of polyoxyalkylene glycol monoether of tert-butyl alcohol and product 失效制备叔丁醇和产物的聚氧亚烷基二醇单醚
公开(公告)号：US5714638A
公开(公告)日：1998-02-03
申请号：US381733
申请日：1995-02-01
CPC分类号： C08G65/20
摘要： Polyoxyalkylene glycol monoethers of monohydric alcohols are prepared by a process in which tetrahydrofuran or a mixture of tetrahydrofuran with a total of not more than 95 mol %, based on the amount of tetrahydrofuran used, of one or more comonomers from the group consisting of the cyclic ethers and acetals is polymerized in the absence of water and in the presence of a monohydric alcohol and of an anhydrous heteropoly acid catalyst.
摘要翻译： 一元醇的聚氧亚烷基二醇单醚通过以下方法制备，其中四氢呋喃或四氢呋喃的混合物，总共不超过95摩尔％，基于所用四氢呋喃的一种或多种共聚单体来自由环状 醚和缩醛在不存在水和在一元醇和无水杂多酸催化剂的存在下聚合。
-
5.发明授权Adjustment of the average molecular weight of polyoxyalkylene glycols and polyoxyalkylene derivatives in the heteropolyacid-catalyzed polymerization of cyclic ethers and/or acetals with ring cleavage 失效在具有环裂解的环醚和/或缩醛的杂多酸催化聚合中调整聚氧亚烷基二醇和聚氧化烯衍生物的平均分子量
公开(公告)号：US5395959A
公开(公告)日：1995-03-07
申请号：US110297
申请日：1993-08-20
摘要： The average molecular weight of polyoxyalkylene glycols and polyoxyalkylene glycol derivatives is adjusted in the heteropolyacid-catalyzed polymerization of cyclic ethers and/or acetals with ring cleavage in the presence of proton donors by a process in which the amount of the relevant proton donor present in the reaction system is regulated in the course of the reaction by the measurement of the electrical conductivity.
摘要翻译： 聚合氧亚烷基二醇和聚氧化亚烷基二醇衍生物的平均分子量在质子供体存在下，通过环状醚和/或缩醛环进行杂多酸催化聚合来调节，其中存在于 通过测量电导率，在反应过程中调节反应体系。
-
公开(公告)号：US5099074A
公开(公告)日：1992-03-24
申请号：US603519
申请日：1990-10-26
CPC分类号： C08G65/20
摘要： A process for the preparation of polyether glycols by polymerization of tetrahydrofuran or copolymerization of tetrahydrofuran with oxiranes in the presence of from 20 to 500% w/w of a hydrocarbon, based on the weight of tetrahydrofuran used.
摘要翻译： 基于所用四氢呋喃的重量，通过四氢呋喃聚合制备聚醚二醇的方法或四氢呋喃与环氧乙烷在20-500％w / w烃存在下共聚合的方法。
-
7.发明授权
公开(公告)号：US5097077A
公开(公告)日：1992-03-17
申请号：US593127
申请日：1990-10-05
摘要： A process is described for the purification of crude polyalkylene ether glycols contaminated by heteropolyacids or salts thereof, by treatment with solvents, which comprises mixing the crude polyalkylene ether glycols with a liquid hydrocarbon and water, allowing the phases to separate, and isolating the purified polyalkylene ether glycols from the upper phase.
摘要翻译： 描述了通过用溶剂处理来纯化被杂多酸或其盐污染的粗聚亚烷基醚二醇的方法，该方法包括将粗聚亚烷基醚二醇与液体烃和水混合，使相分离，并分离纯化的聚亚烷基 来自上层的醚二醇。
-
公开(公告)号：US4567303A
公开(公告)日：1986-01-28
申请号：US638522
申请日：1984-08-06
申请人： Guenter Boettger , Hans Hammer , Otto Hertel , Gerhard Jeschek , Herbert Mueller , Emil Scharf , Willibald Schoenleben
发明人： Guenter Boettger , Hans Hammer , Otto Hertel , Gerhard Jeschek , Herbert Mueller , Emil Scharf , Willibald Schoenleben
IPC分类号： C07C211/10 , C07C67/00 , C07C209/00 , C07C209/16 , C07C211/09 , C07C211/65 , C07C213/00 , C07C213/04 , C07C215/08 , C07C215/14 , C07D295/088 , C07C65/01
CPC分类号： C07D295/088
摘要： In preparing or reacting alkanolamines, especially at high temperatures, the use of substantially nickel-free alloy steels prevents corrosion and discoloration.
摘要翻译： 在制备或反应链烷醇胺时，特别是在高温下，使用基本上不含镍的合金钢可防止腐蚀和变色。
-
9.发明授权Separation of heteropoly compounds from polyethers, polyesters and polyether esters 失效从聚醚，聚酯和聚醚酯中分离杂多化合物
公开(公告)号：US5951829A
公开(公告)日：1999-09-14
申请号：US809688
申请日：1997-03-27
摘要： A method of separating heteropoly compounds from mixtures of polyethers, polyesters and/or polyether esters, a protic component and heteropoly compounds, wherein the protic component is removed from the mixture and subsequently separating off the heteropoly compound as a separate phase. The polymer phase which remains is preferably brought into further contact with a solid adsorbent that is capable of adsorbing heteropoly compounds.
摘要翻译： PCT No.PCT / EP95 / 03955 371日期1997年3月27日 102（e）1997年3月27日PCT PCT 1995年10月6日PCT公布。 出版物WO96 / 11221 日期1996年04月18日从聚醚，聚酯和/或聚醚酯的混合物中分离杂多化合物的方法，质子成分和杂多化合物，其中将质子成分从混合物中除去，随后将杂多化合物分离出来， 。 保留的聚合物相优选与能够吸附杂多化合物的固体吸附剂进一步接触。
-
公开(公告)号：US4851580A
公开(公告)日：1989-07-25
申请号：US925234
申请日：1986-10-31
IPC分类号： C07B61/00 , B01J23/00 , B01J23/72 , B01J23/78 , C07C67/00 , C07C209/00 , C07C209/14 , C07C209/16 , C07C211/03 , C07C211/05 , C07C211/08
CPC分类号： C07C209/16
摘要： A process for the preparation of tertiary alkylamines having a total of up to 9 carbon atoms by reacting a dialkylamine with a C.sub.2 -C.sub.4 -alcohol in the presence of a hydrogenation/dehydrogenation catalyst which contains essentially only copper as the hydrogenating/dehydrogenating catalytic metal is proposed, wherein the reactants(a) are present in the liquid phase,(b) contain alkali metal and/or alkaline earth metal oxides and/or hydroxides and(c) are reacted in a molar ratio of dimethylamine to alcohol of from 1:10 to 10:1 and(d) in the presence of the water formed during the reaction.
摘要翻译： 在氢化/脱氢催化剂存在下，通过使二烷基胺与C 2 -C 4醇反应来制备总共多达9个碳原子的叔烷基胺的方法，其基本上仅含有铜作为氢化/脱氢催化金属， 提出，其中反应物（a）存在于液相中，（b）含有碱金属和/或碱土金属氧化物和/或氢氧化物，和（c）以二甲胺与醇的摩尔比1： 10至10：1和（d）在反应期间形成的水的存在下。
-
-
-
-
-
-
-
-
-
搜索结果
11 条记录 (耗时 0.028 秒)