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    • 165. 发明申请
    • Preparation of polyether alcohols
    • 聚醚醇的制备
    • US20050107643A1
    • 2005-05-19
    • US10712707
    • 2003-11-13
    • Thomas OstrowskiRaimund RuppelEva BaumKathrin Harre
    • Thomas OstrowskiRaimund RuppelEva BaumKathrin Harre
    • C07C43/11C08G65/00C08G65/10C08G65/12C08G65/26
    • C08G65/2663C08G18/4866C08G65/2696
    • The invention relates to a process for the continuous preparation of polyether alcohols by reaction of alkylene oxides with H-functional starter substances in the presence of DMC catalysts, which comprises, at the beginning of the process a) firstly placing initial charge material and DMC catalyst in a reactor, b) metering in alkylene oxide so that the metering rate which is maintained for continuous operation of the reactor is reached in a time of from 100 to 3 000 seconds, c) metering in starter substance during or after step b) so that the metering rate which is maintained for continuous operation of the reactor is reached in a time of from 5 to 500 seconds, d) after the fill level in the reactor which is desired for continuous operation of the reactor has been reached, taking product off continuously from the reactor while at the same time metering in starter substance and alkylene oxides in such an amount that the fill level in the reactor remains constant and metering in DMC catalyst so that the catalyst concentration necessary for continuous operation of the reactor is maintained in the reactor.
    • 本发明涉及一种通过在DMC催化剂存在下使烯化氧与H官能起始物质反应来连续制备聚醚醇的方法,该方法在方法开始时包括:a)首先将初始的电荷材料和DMC催化剂 在反应器中,b)在环氧烷中计量,使得在100至3000秒的时间内达到维持反应器连续操作的计量速率,c)在步骤b)或之后计量起始物质 在5至500秒的时间内达到维持反应器连续运行的计量速率,d)在达到反应器连续运行所需反应器的填充量后,将产品关闭 连续地从反应器中同时在起始物质和环氧烷中计量,使得反应器中的填充水平保持恒定并且在DMC cata中计量 使得在反应器中保持连续操作反应器所需的催化剂浓度。
    • 168. 发明申请
    • Oxytetramethylene glycol copolymer and process for producing the same
    • 氧四亚甲基二醇共聚物及其制备方法
    • US20040049007A1
    • 2004-03-11
    • US10250859
    • 2003-07-09
    • Tamotsu KodamaHaruyuki MinouraYoshiyuki TsunematsuToshihiko FukuzonoSatoshi Furubeppu
    • C08G059/00
    • C08G65/30C08G65/20C08G65/2609C08G65/2696
    • Disclosed is an oxytetramethylene glycol copolymer, which is obtained by copolymerizing tetrahydrofuran and neopentyl glycol and which has a specific number average molecular weight Mn, a specific molecular weight distribution Mn/Mw, a specific neopentyl glycol copolymerization whole ratio Nw and a specific neopentyl glycol copolymerization partial ratio Nh, and a method for producing the same. Also disclosed is a method for purifying an oxytetramethylene glycol copolymer, which comprises adding a fresh tetrahydrofuran to a reaction mixture comprising an oxytetramethylene glycol copolymer and an unreacted diol, wherein the amount of added tetrahydrofuran is not less than the weight of the unreacted diol contained in the reaction mixture, and distilling off the unreacted diol together with the added tetrahydrofuran.
    • 公开了通过四氢呋喃和新戊二醇的共聚获得的氧化四亚甲基二醇共聚物,其具有特定的数均分子量Mn,特定分子量分布Mn / Mw,特定的新戊二醇共聚合比Nw和特定的新戊二醇共聚 部分比例Nh及其制造方法。 还公开了一种用于纯化含氧四亚甲基二醇共聚物的方法,其包括向包含氧化四亚甲基二醇共聚物和未反应的二醇的反应混合物中加入新鲜的四氢呋喃,其中加入的四氢呋喃的量不小于 反应混合物,并与加入的四氢呋喃一起蒸馏出未反应的二醇。
    • 169. 发明申请
    • Activated starter mixtures and the processes related thereto
    • 活化起动​​混合物及其相关工艺
    • US20040014908A1
    • 2004-01-22
    • US10199916
    • 2002-07-19
    • John E. Hayes
    • C08G059/14
    • C08G65/2696C08G18/4866C08G65/2609C08G65/2663
    • The present invention is directed to an activated starter mixture which can be used to prepare polyoxyalkylene polyols. The present invention is also directed to a process for preparing an activated starter mixture, particularly, to a process for preparing an activated starter mixture which is composed of a low molecular weight starter compound. The present invention is also directed to a batch or semi-batch process for the polyaddition of an alkylene oxide on to an activated starter mixture, particularly, on to an activated starter mixture which is composed of a low molecular weight starter compound. The present invention provides an activated starter mixture, particularly, an activated starter mixture which is composed of a low molecular weight starter compound, which rapidly initiates polymerization. The present invention can eliminate the need to synthesize costly high molecular weight starter compounds by KOH catalysis in a separate, dedicated reactor.
    • 本发明涉及可用于制备聚氧化烯多元醇的活化起始混合物。 本发明还涉及一种制备活化起始混合物的方法,特别是制备由低分子量起始化合物组成的活化起始混合物的方法。 本发明还涉及用于将烯化氧加成到活化的起始混合物上的批次或半间歇方法,特别是涉及由低分子量起始化合物组成的活化起始混合物。 本发明提供一种活化的起始混合物,特别是由低分子量起始化合物组成的活化起始物混合物,其快速引发聚合。 本发明可以消除在单独的专用反应器中通过KOH催化合成昂贵的高分子量起始物化合物的需要。