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    Polymerization process providing polyethylene of enhanced optical properties
    64.
    发明申请
    Polymerization process providing polyethylene of enhanced optical properties 审中-公开
    提供增强光学性能的聚乙烯的聚合方法

    公开(公告)号：US20080269441A1

    公开(公告)日：2008-10-30

    申请号：US11796888

    申请日：2007-04-30

    Applicant: Gerhard Guenther ,  David W. Knoeppel ,  Steven D. Gray ,  Tim J. Coffy

    Inventor： Gerhard Guenther ,  David W. Knoeppel ,  Steven D. Gray ,  Tim J. Coffy

    IPC: C08F4/44

    CPC classification number: C08F10/00 ,  C08F210/16 ,  C08F4/69 ,  C08F2/14 ,  C08F210/14 ,  C08F2500/12

    Abstract: A process for the polymerization of ethylene to provide an ethylene polymer of reduced Yellowness Index. A feed stream, comprising an inert hydrocarbon diluent containing ethylene in a minor amount, is supplied to a polymerization reactor. A chromium-based polymerization catalyst and a triethylboron co-catalyst are incorporated into the feed stream within the reactor. The polymerization catalyst will normally be used in an amount within the range of 0.008-0.1 wt. % of the diluent in the feed stream and the triethylboron co-catalyst is incorporated in an amount within the range of 0.1-50 ppm of the diluent. The polymer fluff from the reactor is heated to a temperature sufficient to melt the fluff which is then extruded to produce a polymer product. The Yellowness Index after high temperature aging is at least 5% less than the corresponding Yellowness Index of a corresponding polymer product produced without the triethylboron co-catalyst.

    Abstract translation: 一种聚合乙烯以提供降低黄度指数的乙烯聚合物的方法。 将包含少量乙烯的惰性烃稀释剂的进料流供给到聚合反应器中。 在反应器内的进料流中加入铬基聚合催化剂和三乙基硼助催化剂。 聚合催化剂通常的用量范围为0.008-0.1wt。 进料流和三乙基硼助催化剂中稀释剂的％的掺入量在稀释剂的0.1-50ppm的范围内。 将来自反应器的聚合物绒毛加热到足以熔化绒毛的温度，然后将其挤出以产生聚合物产物。 高温老化后的黄度指数比没有三乙基硼助催化剂生产的相应的聚合物产物的相应黄度指数小至少5％。

    Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use
    65.
    发明授权
    Pretreated and prepolymerized polyolefin catalyst, production thereof and method of use 有权
    预处理和预聚合的聚烯烃催化剂，其生产方法和使用方法

    公开(公告)号：US07365138B2

    公开(公告)日：2008-04-29

    申请号：US11031587

    申请日：2005-01-07

    Applicant: Steven D. Gray ,  Tim J Coffy ,  Edwar S. Shamshoum ,  Hong Chen

    Inventor： Steven D. Gray ,  Tim J Coffy ,  Edwar S. Shamshoum ,  Hong Chen

    IPC: C08F4/654

    CPC classification number: C08F10/00 ,  C08F110/02 ,  C08F4/6492 ,  C08F4/6557

    Abstract: A method of modifying a Ziegler-Natta type polyolefin catalyst comprises contacting the Ziegler-Natta catalyst with olefin monomer to form a prepolymerized catalyst. The prepolymerized catalyst can comprise a reduced number of catalyst particles having a size of 40 microns or less. The prepolymerized catalyst can be used in a polymerization process to produce polymer fluff particles with a reduced number of polymer fluff fines than the Ziegler-Natta type catalyst.

    Abstract translation: 修饰齐格勒 - 纳塔型聚烯烃催化剂的方法包括使齐格勒 - 纳塔催化剂与烯烃单体接触以形成预聚合的催化剂。 预聚合的催化剂可以包含减少数量的具有40微米或更小尺寸的催化剂颗粒。 预聚合的催化剂可用于聚合过程中，以生产具有比齐格勒 - 纳塔型催化剂低的聚合物绒毛数量的聚合物绒毛颗粒。

    Ziegler-Natta catalyst for polyolefins
    66.
    发明授权
    Ziegler-Natta catalyst for polyolefins 有权
    齐格勒 - 纳塔催化剂用于聚烯烃

    公开(公告)号：US06864207B2

    公开(公告)日：2005-03-08

    申请号：US10667546

    申请日：2003-09-22

    Applicant: David W. Knoeppel ,  Tim J. Coffy ,  Henry Enriquez ,  Steven D. Gray

    Inventor： David W. Knoeppel ,  Tim J. Coffy ,  Henry Enriquez ,  Steven D. Gray

    IPC: C08F4/654 ,  C08F4/658 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  B01J31/00 ,  B01J37/00 ,  C08F4/02 ,  C08F4/60

    CPC classification number: C08F10/00 ,  C08F110/02 ,  C08F4/6546 ,  C08F4/651 ,  C08F4/6567 ,  C08F4/6557 ,  C08F2500/12 ,  C08F2500/02 ,  C08F2500/23 ,  C08F2500/07 ,  C08F2500/18 ,  C08F2500/04

    Abstract: A process for making a polyolefin catalyst component, catalyst and polymer resin is disclosed. Controlling the viscosity of a catalyst synthesis solution with the addition of aluminum alkyl alters the precipitation of the catalyst component from a catalyst synthesis solution. The average particle size of the catalyst component increases with an increased concentration of aluminum alkyl in the synthesis solution. The catalyst component can be produced by a process comprising contacting a magnesium alkyl compound with an alcohol and an aluminum alkyl to form a magnesium dialkoxide. Catalyst components, catalysts, catalyst systems, polyolefin, products made therewith, and methods of forming each are disclosed. The reaction products can be washed with a hydrocarbon solvent to reduce titanium species [Ti] content to less than about 100 mmol/L.

    Abstract translation: 公开了一种制备聚烯烃催化剂组分，催化剂和聚合物树脂的方法。 通过添加烷基铝来控制催化剂合成溶液的粘度改变了催化剂组分从催化剂合成溶液中的沉淀。 催化剂组分的平均粒度随着合成溶液中烷基铝浓度的增加而增加。 催化剂组分可以通过包括使烷基镁化合物与醇和烷基铝接触以形成二烷氧基镁的方法来制备。 公开了催化剂组分，催化剂，催化剂体系，聚烯烃，由其制备的产品，以及各自形成的方法。 可以用烃溶剂洗涤反应产物以将钛物质[Ti]含量降低至小于约100mmol / L。

    Polyolefin catalysts, production thereof and method of use
    67.
    发明授权
    Polyolefin catalysts, production thereof and method of use 有权
    聚烯烃催化剂，其生产方法和使用方法

    公开(公告)号：US06846887B2

    公开(公告)日：2005-01-25

    申请号：US10370365

    申请日：2003-02-18

    Applicant: Steven D. Gray ,  Tim J. Coffy ,  Edwar S. Shamshoum ,  Hong Chen

    Inventor： Steven D. Gray ,  Tim J. Coffy ,  Edwar S. Shamshoum ,  Hong Chen

    IPC: C08F10/00 ,  C08F110/02 ,  C08F4/654 ,  C08F4/655

    CPC classification number: C08F10/00 ,  C08F110/02 ,  C08F4/6492 ,  C08F4/6557

    Abstract: A method of modifying a Ziegler-Natta type polyolefin catalyst comprises contacting the Ziegler-Natta catalyst with olefin monomer to form a prepolymerized catalyst. The prepolymerized catalyst can comprise a reduced number of catalyst particles having a size of 40 microns or less. The prepolymerized catalyst can be used in a polymerization process to produce polymer fluff particles with a reduced number of polymer fluff fines than the Ziegler-Natta type catalyst.

    Abstract translation: 修饰齐格勒 - 纳塔型聚烯烃催化剂的方法包括使齐格勒 - 纳塔催化剂与烯烃单体接触以形成预聚合的催化剂。 预聚合的催化剂可以包含减少数量的具有40微米或更小尺寸的催化剂颗粒。 预聚合的催化剂可用于聚合过程中，以生产具有比齐格勒 - 纳塔型催化剂低的聚合物绒毛数量的聚合物绒毛颗粒。

    Magnesium-diketonate complex derived polyolefin catalysts, method of making same, method of polymerizing with same
    68.
    发明授权
    Magnesium-diketonate complex derived polyolefin catalysts, method of making same, method of polymerizing with same 失效
    碳酸二乙酯复合衍生的聚烯烃催化剂，其制备方法，聚合方法

    公开(公告)号：US06790804B2

    公开(公告)日：2004-09-14

    申请号：US10186262

    申请日：2002-06-27

    Applicant: Steven D. Gray ,  Tim J. Coffy ,  Edwar S. Shamshoum

    Inventor： Steven D. Gray ,  Tim J. Coffy ,  Edwar S. Shamshoum

    IPC: B01J3100

    CPC classification number: C08F10/00 ,  C08F4/6546 ,  C08F4/651 ,  C08F4/657 ,  C08F4/6548

    Abstract: A process of forming a polyolefin catalyst component includes contacting a metal compound of the formula MR2 with a diketone to form a metal bis(diketonate) having the formula M(OCRCR′CRO)2, wherein M is a Group IIA or Group VIIB metal, and wherein R and R′ are each hydrocarbyls or substituted hydrocarbyls having from 1 to 20 carbons atoms. Catalyst components, catalysts, polyolefin polymers, catalysts systems, and methods of preparing same are disclosed.

    Abstract translation: 形成聚烯烃催化剂组分的方法包括使式MR2的金属化合物与二酮接触以形成具有式M（OCRCR'CRO）2的金属双（二酮），其中M为IIA族或VIIB族金属， 并且其中R和R'各自为烃基或具有1至20个碳原子的取代烃基。 公开了催化剂组分，催化剂，聚烯烃聚合物，催化剂体系及其制备方法。

    Apparatus, and associated method, for reporting a measurement summary in a radio communication system
    70.
    发明授权
    Apparatus, and associated method, for reporting a measurement summary in a radio communication system 有权

    公开(公告)号：US06675012B2

    公开(公告)日：2004-01-06

    申请号：US09944420

    申请日：2001-08-31

    Applicant: Steven D. Gray

    Inventor： Steven D. Gray

    IPC: H04Q720

    CPC classification number: H04W72/08 ,  H04L1/201 ,  H04W24/10 ,  H04W84/12

    Abstract: Apparatus, and an associated method, for generating a message summary field. The message summary field indicates whether 802.11-formatted data packets are communicated upon a frequency range to which a mobile station operable in an IEEE 802.11 radio communication system is tuned. An indicator indicates whether an 802.11 data packet is detected. And, a reporter generates a measurement summary which includes a measurement summary field populated with a value indicating the determination. Subsequent analysis of the value of the field of the measurement summary is utilized pursuant to dynamic frequency selection operations.

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