公开(公告)号：US07601664B2

公开(公告)日：2009-10-13

申请号：US10903309

申请日：2004-07-30

Applicant: Linfeng Chen ,  Richard A. Kemp ,  Thomas L. Nemzek

Inventor： Linfeng Chen ,  Richard A. Kemp ,  Thomas L. Nemzek

IPC: B01J31/00

CPC classification number: C08F10/00 ,  C08F4/6574 ,  C08F4/6548 ,  C08F4/685 ,  C08F4/658 ,  C08F4/6565

Abstract: A method of making a solid procatalyst composition for use in a Ziegler-Natta olefin polymerization catalyst composition, said method comprising: contacting a precursor composition comprising a magnesium compound with a titanium halide compound and an internal electron donor in any order, in a suitable reaction medium to prepare a solid procatalyst composition, separating the solid procatalyst from the reaction medium, extracting the solid procatalyst composition by contacting the same one or more times with a liquid diluent at an elevated temperature for a period of time sufficient to prepare a solid procatalyst composition having a decreased titanium content compared to the titanium content of the solid procatalyst composition before said extraction, and recovering the solid procatalyst composition.

Abstract translation: 一种制备用于齐格勒 - 纳塔烯烃聚合催化剂组合物的固体前催化剂组合物的方法，所述方法包括：在合适的反应中以任何顺序将包含镁化合物的前体组合物与卤化钛化合物和内部电子给体接触 培养基以制备固体前催化剂组合物，将固体前催化剂从反应介质中分离出来，通过在高温下将液体稀释剂与液体稀释剂接触一段或者多次，将其固体原料催化剂组合物提取一段时间足以制备固体前催化剂组合物 在所述萃取之前，与固体前催化剂组合物的钛含量相比，钛含量降低，并且回收固体前催化剂组合物。

公开(公告)号：US20090209706A1

公开(公告)日：2009-08-20

申请号：US12390897

申请日：2009-02-23

Applicant: William G. Sheard ,  Jeffrey D. Goad ,  Linfeng Chen

Inventor： William G. Sheard ,  Jeffrey D. Goad ,  Linfeng Chen

IPC: C08L23/16 ,  C08F2/01 ,  C08F210/06

CPC classification number: C08F10/02 ,  B01J8/1809 ,  B01J8/1872 ,  C08F10/06 ,  C08F110/06 ,  C08F210/06 ,  C08F297/083 ,  C08F2400/02 ,  C08L23/10 ,  C08L23/12 ,  C08L23/142 ,  C08L23/16 ,  C08L2207/02 ,  C08L2314/02 ,  C08F2/40 ,  C08F2/001 ,  C08F4/6465 ,  C08F2/34 ,  C08F4/6494 ,  C08F2/00 ,  C08L2666/06 ,  C08F2500/12 ,  C08F2500/24 ,  C08F2500/18 ,  C08F210/16

Abstract: The present disclosure provides a polymerization process for the production of a high melt flow propylene impact copolymer. The process includes contacting an active propylene-based polymer having a melt flow rate greater than about 100 g/10 min with one or more olefins in a polymerization reactor to form the propylene impact copolymer with a melt flow rate greater than about 60 g/10 min. The production of the high melt flow propylene impact copolymer may occur in one or more polymerization reactors, utilizing standard hydrogen concentration, and no visbreaking.

Abstract translation: 本公开内容提供了用于生产高熔体流动丙烯抗冲共聚物的聚合方法。 该方法包括在聚合反应器中将熔体流动速率大于约100g / 10min的活性丙烯基聚合物与一种或多种烯烃接触以形成丙烯冲击共聚物，其熔体流动速率大于约60g / 10 分钟 高熔体流动丙烯抗冲共聚物的生产可以在一个或多个聚合反应器中发生，利用标准氢浓度，不进行减粘裂化。

公开(公告)号：US07491670B2

公开(公告)日：2009-02-17

申请号：US10568930

申请日：2004-09-17

Applicant: Linfeng Chen ,  Richard E. Campbell, Jr.

Inventor： Linfeng Chen ,  Richard E. Campbell, Jr.

IPC: C08F4/642

CPC classification number: C08F10/00 ,  B01J31/0201 ,  B01J31/0272 ,  B01J31/04 ,  B01J31/143 ,  C08F10/06 ,  C08F110/06 ,  C08F4/6496 ,  C08F4/6495 ,  C08F4/6494 ,  C08F4/6465 ,  C08F2500/12 ,  C08F2500/18

Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent (SCA) comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent (ALA) compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl(poly)(oxyalkyl)-(poly)ester derivatives thereof; or inertly substituted derivatives of the foregoing.

Abstract translation: 一种用于丙烯聚合的催化剂组合物，其包含一种或多种齐格勒 - 纳塔前催化剂组合物，其包含一种或多种过渡金属化合物和一种或多种芳族二羧酸内电子给体的酯; 一种或多种含铝助催化剂; 包含至少一种含有至少一个与硅原子键合的C 1-10烷氧基的含硅化合物的选择性控制剂（SCA）和一种或多种包含一种或多种脂族或脂环族羧酸的活性限制剂（ALA）化合物; 烷基 - ，环烷基 - 或烷基（聚）（烷氧基） - （聚）酯衍生物; 或惰性取代的衍生物。

公开(公告)号：US07393806B2

公开(公告)日：2008-07-01

申请号：US10568982

申请日：2004-08-18

Applicant: Jeffery S. Bradley ,  Linfeng Chen ,  William G. Sheard ,  Michael P. Zummallen

Inventor： Jeffery S. Bradley ,  Linfeng Chen ,  William G. Sheard ,  Michael P. Zummallen

IPC: C08F4/642

CPC classification number: B01J31/128 ,  B01J31/0212 ,  B01J31/04 ,  B01J31/143 ,  B01J2231/122 ,  B01J2531/22 ,  B01J2531/46 ,  C08F110/06 ,  C08F4/6494 ,  C08F4/651 ,  C08F4/6465 ,  C08F2500/12 ,  C08F2500/18

Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing cocatalyst; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 70 to 98 mol percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 30 to 2 mol percent of one or more alkoxysilane compounds containing one or more 5- or 6-membered cyclic groups optionally containing one or more Group 14, 15 or 16 heteroatoms.

Abstract translation: 一种用于丙烯聚合的催化剂组合物，其包含一种或多种齐格勒 - 纳塔前催化剂组合物，其包含一种或多种过渡金属化合物和一种或多种芳族羧酸内电子给体的单酯; 一种或多种含铝助催化剂; 和两种或更多种不同选择性控制剂的混合物，所述SCA混合物包含70至98mol％的一种或多种一种或多种芳族单羧酸或其取代衍生物的酯，以及30至2mol％的一种或多种 含有一个或多个任选含有一个或多个第14,15或16个杂原子的5或6元环基团的烷氧基硅烷化合物。

公开(公告)号：US07381779B2

公开(公告)日：2008-06-03

申请号：US10568931

申请日：2004-08-18

Applicant: Richard E. Campbell, Jr. ,  Linfeng Chen

Inventor： Richard E. Campbell, Jr. ,  Linfeng Chen

IPC: C08F4/642

CPC classification number: C08F10/00 ,  C08F4/6494 ,  C08F4/6465

Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 1 to 99 percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 99 to 1 percent of one or more alkoxysilane compounds.

Abstract translation: 一种用于丙烯聚合的催化剂组合物，其包含一种或多种齐格勒 - 纳塔前催化剂组合物，其包含一种或多种过渡金属化合物和一种或多种芳族二羧酸内电子给体的酯; 一种或多种含铝助催化剂; 和两种或更多种不同选择性控制剂的混合物，所述SCA混合物包含1至99％的一种或多种一种或多种芳族单羧酸或其取代衍生物的酯，以及99至1％的一种或多种烷氧基硅烷化合物 。

公开(公告)号：US20070032375A1

公开(公告)日：2007-02-08

申请号：US10568931

申请日：2004-08-18

Applicant: Richard Campbell ,  Linfeng Chen

Inventor： Richard Campbell ,  Linfeng Chen

IPC: B01J31/00

CPC classification number: C08F10/00 ,  C08F4/6494 ,  C08F4/6465

Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 1 to 99 percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 99 to 1 percent of one or more alkoxysilane compounds.

Abstract translation: 一种用于丙烯聚合的催化剂组合物，其包含一种或多种齐格勒 - 纳塔前催化剂组合物，其包含一种或多种过渡金属化合物和一种或多种芳族二羧酸内电子给体的酯; 一种或多种含铝助催化剂; 和两种或更多种不同选择性控制剂的混合物，所述SCA混合物包含1至99％的一种或多种一种或多种芳族单羧酸或其取代衍生物的酯，以及99至1％的一种或多种烷氧基硅烷化合物 。

公开(公告)号：US07141635B2

公开(公告)日：2006-11-28

申请号：US10514608

申请日：2003-05-20

Applicant: Linfeng Chen ,  Thomas L. Nemzek

Inventor： Linfeng Chen ,  Thomas L. Nemzek

IPC: C08F4/42 ,  C08F210/00

CPC classification number: C08F10/06 ,  C08F10/00 ,  C08F110/06 ,  C08F210/06 ,  Y10S526/901 ,  C08F4/6465 ,  C08F4/6492 ,  C08F4/6495 ,  C08F4/6494 ,  C08F2/001 ,  C08F2500/12 ,  C08F2500/17 ,  C08F210/16

Abstract: A catalyst composition for the polymerization of olefins and process for the use thereof, comprising the combination of one or more Ziegler-Natta catalysts, comprising one or more transition metal compounds, one or more aluminum containing cocatalyts, and a mixture of different selectivity control agents, including in said mixture of selectivity control agents at least one normally dominating selectivity control agent and one normally dominated selectivity control agent, characterized in that the individual selectivity control agents are present in the mixture in relative amounts to each other and relative to the one or more transition metal compounds, such that the effect of the selectivity control agents on the resulting polymer properties is not determined solely or substantially solely by the normally dominating selectivity control agent.

公开(公告)号：US10647790B2

公开(公告)日：2020-05-12

申请号：US13172969

申请日：2011-06-30

Applicant: Ping Cai ,  Jan W. Van Egmond ,  Matthew J. Fedec ,  Jeffrey D. Goad ,  Robert C. Brady, III ,  Linfeng Chen

Inventor： Ping Cai ,  Jan W. Van Egmond ,  Matthew J. Fedec ,  Jeffrey D. Goad ,  Robert C. Brady, III ,  Linfeng Chen

IPC: C08F10/06 ,  C08F110/06 ,  C08F210/06

Abstract: The present invention relates to an improvement for gas-phase olefin polymerization process having relatively high bed bulk density. The improvement involves the use of mixed external electron donors when polymerizing propylene in a gas-phase reactor having a polymer bed with a bulk density greater than 128 kg/m3, optionally with one or more comonomers, wherein the mixed electron donor system comprises at least a first external electron donor and a second external electron donor, and wherein the first external electron donor is a carboxylate compound.

公开(公告)号：US10207238B2

公开(公告)日：2019-02-19

申请号：US13025532

申请日：2011-02-11

Applicant: Linfeng Chen

Inventor： Linfeng Chen

IPC: B01J8/18 ,  C08F10/02 ,  C08F10/06 ,  C08F110/06 ,  C08F4/649 ,  B01J31/02 ,  B01J31/12 ,  B01J31/14 ,  B01J31/22 ,  C08F210/06

Abstract: The present disclosure provides a Ziegler-Natta catalyst composition comprising a procatalyst, a cocatalyst and a mixed external electron donor comprising a first selectivity control agent, a second selectivity control agent, and an activity limiting agent. A polymerization process incorporating the present catalyst composition produces a high-stiffness propylene-based polymer with a melt flow rate greater than about 50 g/10 min. The polymerization process occurs in a single reactor, utilizing standard hydrogen concentration with no visbreaking.

公开(公告)号：US20140046009A1

公开(公告)日：2014-02-13

申请号：US13996300

申请日：2011-12-02

Applicant: Linfeng Chen ,  Tak W. Leung ,  Tao Tao

Inventor： Linfeng Chen ,  Tak W. Leung ,  Tao Tao

IPC: C08F4/76 ,  C08F4/52

CPC classification number: C08F4/76 ,  C08F4/52 ,  C08F10/00 ,  C08F110/06 ,  Y02P20/52 ,  C08F2500/12 ,  C08F2500/04 ,  C08F4/6493 ,  C08F4/651

Abstract: Disclosed herein are catalyst compositions and polymers, i.e., propylene-based polymers, produced therefrom. The present catalyst compositions contain an internal electron donor of an alkoxyalkyl 2-propenoate and optionally a mixed external electron donor. The present catalyst compositions improve catalyst selectivity and polymer stiffness. Polypropylene homopolymer produced from the present catalyst composition has a xylene solubles content less than 4 wt % and a TMF greater than 172.0° C.

Abstract translation: 本文公开了催化剂组合物和聚合物，即由其制备的基于丙烯的聚合物。 本催化剂组合物含有2-丙烯酸烷氧基烷基酯和任选的混合的外电子给体的内电子给体。 本催化剂组合物改善催化剂选择性和聚合物刚度。 由本催化剂组合物制备的聚丙烯均聚物的二甲苯可溶物含量小于4wt％，TMF大于172.0℃。