专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

WO2018164798A1 PROCESS FOR PRODUCING POLYETHYLENE POLYMERS 审中-公开
公开(公告)号：WO2018164798A1
公开(公告)日：2018-09-13
申请号：PCT/US2018/017195
申请日：2018-02-07
申请人： EXXONMOBIL CHEMICAL PATENTS INC.
发明人： BRANDL, Corrine, L. , LAMBERTI, William, A. , BUHLER, Charles, R. , CLEMENTS, Judson, S. , DECKMAN, Harry, W. , MOEBUS, Joseph, A. , DECHELLIS, Marc, L.
IPC分类号： C08F2/34 , C08F210/16 , C08F210/02 , C08F4/659
摘要： A process for producing polyethylene polymers including contacting ethylene and at least one C 3 to C 8 alpha-olefin comonomer with a polymerization catalyst on a particulate support in a fluidized bed polymerization reactor under conditions effective to polymerize at least part of the ethylene and comonomer and produce the polyethylene polymers, wherein the support has a d 10 particle size as measured by laser diffraction of at least 18 microns, is provided.

2. 发明申请

WO2021173326A1 HIGHLY EFFICIENT C6 INERT VENT FOR GAS PHASE POLYETHYLENE PRODUCTION 审中-公开
公开(公告)号：WO2021173326A1
公开(公告)日：2021-09-02
申请号：PCT/US2021/016900
申请日：2021-02-05
申请人： EXXONMOBIL CHEMICAL PATENTS INC.
发明人： SANDELL, David, J. , BRANDL, Corrine, L. , GALLACHER, Jonathan, R.
IPC分类号： C08F2/01 , C08F2/34 , C08F210/16 , B01D5/00 , B01J19/00
摘要： Method of improving the efficiency of polyolefin production comprising: performing a reaction to yield (1) a product stream comprising a polyolefin, and (2) a purge stream, wherein the purge stream comprises unreacted monomers, inert impurities and saturated co-monomers; compressing the purge stream in a first stage compressor to create a first compressed stream; cooling the stream first compressed stream in a cooler to create a cooled stream; directing the cooled stream to a first drum, to create a waste liquid stream and a first drum stream; removing the waste liquid stream from the first drum; compressing the first drum stream in a second stage compressor to create a second compressed stream; condensing the second compressed stream to produce a condensed stream; processing the condensed stream in a second drum to produce a second drum gas stream and a second drum liquid stream; and, sending at least a portion of the second drum liquid stream to a polyolefin reactor.

3. 发明申请

WO2018063764A1 POLYMERIZATION PROCESS 审中-公开
标题翻译：聚合工艺
公开(公告)号：WO2018063764A1
公开(公告)日：2018-04-05
申请号：PCT/US2017/050421
申请日：2017-09-07
申请人： EXXONMOBIL CHEMICAL PATENTS INC.
发明人： BRANDL, Corrine, L. , EHRMAN, Fred, D. , LATTNER, James, R.
IPC分类号： C08F2/00 , C08F2/34 , C08F210/02
摘要： A process including contacting one or more monomers, at least one catalyst system, and at least two condensing agents under polymerizable conditions to produce a polyolefin polymer is provided where the vapor pressure of the condensing agents is ±4 bara of the optimum vapor pressure given by the formula: optimum vapor pressure = 614 - 716*D + 2.338*P + 3.603*ln(MI), where the optimum vapor pressure has units (bara), D is the polyolefin polymer density with units (g/cc), P is the polymerization condition pressure with units (barg), and MI is the polyolefin polymer melt index with units (g/lOmin). The invention also relates to a process where at least three condensing agents are used.
摘要翻译：包括在可聚合条件下使一种或多种单体，至少一种催化剂体系和至少两种缩合剂接触以制备聚烯烃聚合物的方法，其中缩合剂的蒸气压为±10℃; 最佳蒸汽压力为614-716 * D + 2.338 * P + 3.603 * ln（MI），其中最佳蒸汽压力为单位（巴），D为聚烯烃聚合物密度单位为（g / cc），P是单位为（巴）的聚合条件压力，MI为聚烯烃聚合物熔体指数，单位为（g / 10min）。本发明还涉及使用至少三种缩合剂的方法。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式