公开(公告)号：US08981132B2

公开(公告)日：2015-03-17

申请号：US14252149

申请日：2014-04-14

申请人： Dow Global Technologies LLC

发明人： Hannah L. Crampton

IPC分类号： C07D303/00 ,  C07D303/08 ,  B01J29/89 ,  B01J37/02 ,  B01J37/06 ,  B01J38/52 ,  C07D301/12

CPC分类号： C07D303/08 ,  B01J29/89 ,  B01J37/0203 ,  B01J37/0209 ,  B01J37/06 ,  B01J38/52 ,  C07D301/12 ,  Y02P20/584

摘要： A pretreated titanium silicalite with MFI structure (TS-1) catalyst which has been pretreated with methanol, and then optionally filtered and optionally air-dried to form a pretreated activated TS-1 catalyst. The activated TS-1 may be used in an epoxidation reaction with no additional methanol added and has equivalent activity to TS-1 used with large excesses of methanol. By removing the need for additional methanol during the reaction, the losses of epichlorohydrin from solvolysis are minimized significantly.

摘要翻译： 具有MFI结构（TS-1）催化剂的预处理的钛硅沸石，其已经用甲醇预处理，然后任选地过滤并任选地空气干燥以形成预处理的活化的TS-1催化剂。 活化的TS-1可以在环氧化反应中使用，没有添加额外的甲醇，并且与使用大量过量的甲醇的TS-1具有同等的活性。 通过在反应期间除去对另外的甲醇的需要，溶剂分解的表氯醇的损失被显着地最小化。

公开(公告)号：US20140309441A1

公开(公告)日：2014-10-16

申请号：US14355865

申请日：2012-11-02

申请人： Dow Global Technologies LLC

发明人： Cesar E. Meza ,  Philip J. Carlberg ,  Hannah L. Crampton

IPC分类号： C07D301/12

CPC分类号： C07D301/12 ,  Y02P20/582

摘要： Embodiments of the present disclosure provide processes and systems for the epoxidation of an olefin using a fixed bed reactor. The fixed bed reactor is maintained at a temperature from 0 to 40 degrees Celsius. The processes and systems regulate a superficial liquid velocity of a non-homogeneous reaction mixture and recycled portion of effluent of the fixed bed reactor.

摘要翻译： 本公开的实施方案提供了使用固定床反应器进行烯烃环氧化的方法和系统。 固定床反应器保持在0至40摄氏度的温度。 方法和系统调节固定床反应器的非均匀反应混合物和再循环部分流出物的表面液体速度。

公开(公告)号：US20180319934A1

公开(公告)日：2018-11-08

申请号：US15770779

申请日：2016-10-19

申请人： Dow Global Technologies LLC

发明人： Troy E. Knight ,  Thomas C. Young ,  Gerald W. Dare ,  Hannah L. Crampton ,  Bruce D. Hook ,  Pasquale Sirignano ,  Daviele Vinci

IPC分类号： C08G65/24 ,  C08G65/12 ,  C08G65/46

CPC分类号： C08G59/04 ,  C08G59/022 ,  C08G59/025 ,  C08G59/22

摘要： Produce diglycidyl-capped polyalkylene glycol by (a) providing epihalohydrin, a polyalkylene glycol that contains and ethylene oxide component and a Lewis acid; (b) coupling the epihalohydrin to the polyalkylene glycol using the Lewis acid as a catalyst to produce a coupling product; (c) stripping 1,4-dioxane from the coupling product; and (d) epoxidation of the coupling product by addition of a base to form diglycidyl-capped polyalkylene glycol in an organic phase.