知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

256 records (took 0.031 seconds)

    Process for preparing polyether alcohols
    5.
    发明授权
    Process for preparing polyether alcohols 有权
    制备聚醚醇的方法

    公开(公告)号：US09120731B2

    公开(公告)日：2015-09-01

    申请号：US13813300

    申请日：2011-08-08

    Applicant: Achim Loeffler ,  Michael Stoesser ,  Wolfgang Loth ,  Ralf Boehling ,  Sirus Zarbakhsh

    Inventor： Achim Loeffler ,  Michael Stoesser ,  Wolfgang Loth ,  Ralf Boehling ,  Sirus Zarbakhsh

    IPC: C07C41/02 ,  C08G65/26

    CPC classification number: C07C41/02 ,  C08G65/2696

    Abstract: What is proposed is a process for preparing polyether alcohols by conversion of the following reactants: a) one or more alkylene oxides and optionally carbon dioxide and b) one or more H-functional starter substances, in the presence of a catalyst, to form a liquid reaction mixture, in a reaction unit (1), which is characterized in that the reaction unit (1) has internals (2) which form a multitude of microstructured flow channels which bring about multiple splitting of the liquid reaction mixture into component flow paths and recombination thereof in altered arrangement, the multiple splitting and recombination being repeated several times and the microstructured flow channels having a characteristic dimension which is defined as the greatest possible distance of any particle in the liquid reaction mixture from the wall of a flow channel closest to the particle, in the range from 20 to 10 000 μm, the result being that the flow profile of the liquid reaction mixture approximates to ideal plug flow as a result of the microstructured flow channels.

    Abstract translation: 提出的是通过以下反应物的转化来制备聚醚醇的方法：a）一种或多种环氧烷烃和任选的二氧化碳，和b）一种或多种H官能起始物质，在催化剂存在下，形成 液体反应混合物，在反应单元（1）中，其特征在于反应单元（1）具有形成多个微结构流动通道的内部（2），其导致液体反应混合物多次分离成组分流动路径 并且其重组在改变的布置中，多次分裂和重组被重复几次，并且微结构流动通道具有被定义为液体反应混合物中任何颗粒与流动通道的壁最接近的最大可能距离的特征尺寸 颗粒在20至1000000范围内，其结果是液体反应混合物的流动分布近似于id 作为微结构化流动通道的结果，流动的流动。

    CONTINUOUS PROCESS FOR THE PRODUCTION OF LOW MOLECULAR WEIGHT POLYETHERS WITH A DMC CATALYST
    6.
    发明申请
    CONTINUOUS PROCESS FOR THE PRODUCTION OF LOW MOLECULAR WEIGHT POLYETHERS WITH A DMC CATALYST 有权
    用DMC催化剂生产低分子量聚乙烯的连续方法

    公开(公告)号：US20140275633A1

    公开(公告)日：2014-09-18

    申请号：US13826394

    申请日：2013-03-14

    Applicant: BAYER MATERIALSCIENCE LLC

    Inventor： Jack Reese ,  Paul Webb

    IPC: C07C41/02 ,  C07C41/03

    CPC classification number: C07C41/03 ,  C08G65/2609 ,  C08G65/2663 ,  C08G65/2696

    Abstract: Low molecular weight polyoxyalkylene polyether polyols having a hydroxyl content of from about 3.4 to about 12.1% by weight, and OH numbers of from about 112 to about 400 are produced by a continuous process using a DMC catalyst. In the process of the present invention, oxyalkylation conditions are established in a continuous reactor in the presence of a DMC catalyst; alkylene oxide and a low molecular weight starter are continuously introduced into the continuous reactor; a partially oxyalkylated polyether polyol is recovered from the reactor; and the recovered partially oxyalkylated polyether polyol is allowed to further reactor until the unreacted alkylene oxide content of the mixture is reduced to 0.001% or less by weight. The alkoxylation of the present invention must be carried out a pressure sufficiently high to prevent deactivation of the DMC catalyst. Pressures of from 45 to 55 psia are preferred.

    Abstract translation: 通过使用DMC催化剂的连续方法制备羟基含量为约3.4至约12.1重量％，OH数为约112至约400的低分子量聚氧化烯聚醚多元醇。 在本发明的方法中，在DMC催化剂存在下，在连续反应器中建立烷氧基化条件; 环氧烷和低分子量引发剂连续引入连续反应器中; 从反应器回收部分烷氧基化的聚醚多元醇; 将回收的部分烷氧基化聚醚多元醇进一步加入反应器中，直到混合物的未反应的烯化氧含量降低至0.001重量％以下。 本发明的烷氧基化必须进行足够高的压力以防止DMC催化剂失活。 压力为45至55psia是优选的。

    PROCESS FOR THE PRODUCTION OF LOW MOLECULAR WEIGHT IMPACT POLYETHERS
    7.
    发明申请
    PROCESS FOR THE PRODUCTION OF LOW MOLECULAR WEIGHT IMPACT POLYETHERS 审中-公开
    生产低分子量重力聚合物的方法

    公开(公告)号：US20130345476A1

    公开(公告)日：2013-12-26

    申请号：US13528909

    申请日：2012-06-21

    Applicant: Jack R. Reese

    Inventor： Jack R. Reese

    IPC: C07C41/02 ,  C07C41/03

    CPC classification number: C07C41/03 ,  C08G65/2609 ,  C08G65/2663 ,  C08G65/2696 ,  C08G65/30 ,  C07C43/11

    Abstract: This invention relates to an improved continuous process for the production of low molecular weight polyoxyalkylene polyether polyols. These polyoxyalkylene polyether polyols have a hydroxyl content of from about 3.4 to about 12.1% by weight, and may also be characterized as having an OH number of from about 112 to about 400. The process comprises establishing oxyalkylation conditions in a continuous reactor in the presence of a DMC catalyst; continuously introducing alkylene oxide and a low molecular weight starter into the continuous reactor; recovering a partially oxyalkylated polyether polyol from the reactor; and allowing the recovered partially oxyalkylated polyether polyol to further reactor until the unreacted alkylene oxide content of the mixture is reduced to 0.001% or less by weight.

    Abstract translation: 本发明涉及用于生产低分子量聚氧化烯聚醚多元醇的改进的连续方法。 这些聚氧化烯聚醚多元醇具有约3.4至约12.1重量％的羟基含量，并且还可以表征为具有约112至约400的OH值。该方法包括在存在下在连续反应器中建立烷氧基化条件 的DMC催化剂; 将环氧烷和低分子量起始剂连续引入连续反应器中; 从反应器中回收部分烷氧基化聚醚多元醇; 并将回收的部分烷氧基化聚醚多元醇进一步反应，直到混合物的未反应的烯化氧含量降低至0.001重量％以下。

    PROCESS FOR PREPARING POLYETHER ALCOHOLS
    8.
    发明申请
    PROCESS FOR PREPARING POLYETHER ALCOHOLS 有权
    制备聚醚醇的方法

    公开(公告)号：US20130131389A1

    公开(公告)日：2013-05-23

    申请号：US13813300

    申请日：2011-08-08

    Applicant: Achim Loeffler ,  Michael Stoesser ,  Wolfgang Loth ,  Ralf Boehling ,  Sirus Zarbakhsh

    Inventor： Achim Loeffler ,  Michael Stoesser ,  Wolfgang Loth ,  Ralf Boehling ,  Sirus Zarbakhsh

    IPC: C07C41/02

    CPC classification number: C07C41/02 ,  C08G65/2696

    Abstract: What is proposed is a process for preparing polyether alcohols by conversion of the following reactants: a) one or more alkylene oxides and optionally carbon dioxide and b) one or more H-functional starter substances, in the presence of a catalyst, to form a liquid reaction mixture, in a reaction unit (1), which is characterized in that the reaction unit (1) has internals (2) which form a multitude of microstructured flow channels which bring about multiple splitting of the liquid reaction mixture into component flow paths and recombination thereof in altered arrangement, the multiple splitting and recombination being repeated several times and the microstructured flow channels having a characteristic dimension which is defined as the greatest possible distance of any particle in the liquid reaction mixture from the wall of a flow channel closest to the particle, in the range from 20 to 10 000 μm, the result being that the flow profile of the liquid reaction mixture approximates to ideal plug flow as a result of the microstructured flow channels.

    Abstract translation: 提出的是通过以下反应物的转化来制备聚醚醇的方法：a）一种或多种环氧烷烃和任选的二氧化碳，和b）一种或多种H官能起始物质，在催化剂存在下，形成 液体反应混合物，在反应单元（1）中，其特征在于反应单元（1）具有形成多个微结构流动通道的内部（2），其导致液体反应混合物多次分离成组分流动路径 并且其重组在改变的布置中，多次分裂和重组被重复几次，并且微结构流动通道具有被定义为液体反应混合物中任何颗粒与流动通道的壁最接近的最大可能距离的特征尺寸 该颗粒在20至1000000m范围内，结果是液体反应混合物的流动分布近似于id 作为微结构化流动通道的结果，流动的流动。

Patent Agency Ranking