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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 72695. Отображено 100.
27-05-2010 дата публикации

УСТАНОВКА ПОДГОТОВКИ, ХРАНЕНИЯ И ДОЗИРОВАНИЯ КОМПОНЕНТОВ КАТАЛИТИЧЕСКОЙ СИСТЕМЫ

Номер: RU0000094572U1

1. Установка подготовки, хранения и дозирования компонентов каталитической системы в реакторы полимеризации пропилена, включающая взаимосвязанные между собой узлы: узел подготовки, хранения и дозирования катализатора, узел подготовки, хранения и дозирования сокатализатора и узел подготовки, хранения и дозирования донора, отличающаяся тем, что каждый из узлов: узел подготовки, хранения и дозирования сокатализатора и узел подготовки, хранения и дозирования донора содержит приемную емкость, две функционально эквивалентные и параллельно установленные расходные емкости и два регулирующих клапана, соединенные трубопроводами и арматурой таким образом, что расходные емкости работают на прием и дозирование соответствующего компонента каталитической системы поочередно, но обеспечивая непрерывное раздельное дозирование растворов сокатализатора и донора в реакторы полимеризации пропилена за счет передавливания их азотом, подаваемого из ресивера; а регулирующие клапаны, установленные на линиях раздельной подачи жидких компонентов каталитической системы в реакторы полимеризации пропилена, контролируются массовыми расходомерами и управляются контуром каскадного регулирования. 2. Установка по п.1, отличающаяся тем, что она содержит ресивер, который является общим для узлов подготовки, хранения и дозирования растворов сокатализатора и донора, обеспечивает запас и расход азота для передавливания на стадии дозирования растворов сокатализатора и донора из расходных емкостей в реакторы полимеризации и оборудован контуром автоматического регулирования давления и предохранительным клапаном. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 94 572 (13) U1 (51) МПК C08F 10/06 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (21), (22) Заявка: 2010101569/22, 19.01.2010 (24) Дата начала отсчета срока действия патента: 19.01.2010 (45) Опубликовано: 27.05.2010 9 4 5 7 2 R U Формула полезной модели 1. Установка подготовки, ...

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27-06-2014 дата публикации

ТЕХНОЛОГИЧЕСКАЯ ЛИНИЯ ДЛЯ ПОЛУЧЕНИЯ ПРОТИВОТУРБУЛЕНТНОЙ ПРИСАДКИ НА ОСНОВЕ ПОЛИОЛЕФИНОВ

Номер: RU0000142733U1

Технологическая линия для получения противотурбулентной присадки на основе полиолефинов, характеризующаяся тем, что линия состоит из емкостного полимеризатора, который последовательно соединен трубой с винтовым насосом, а тот, в свою очередь, последовательно соединен трубой с емкостным дегазатором-диспергатором, к которому с помощью трубы последовательно присоединены центробежный аппарат деканторного типа и сборник-усреднитель готового продукта, причём дегазатор-диспергатор на входе снабжен плоскощелевой форсункой с шириной щели 1-4 мм, а также дополнительно оборудован конденсатором паров. Ц 142733 ко РОССИЙСКАЯ ФЕДЕРАЦИЯ 7 ВУ’? 142 733 41 ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ИЗВЕЩЕНИЯ К ПАТЕНТУ НА ПОЛЕЗНУЮ МОДЕЛЬ МЕЭК Восстановление действия патента Дата, с которой действие патента восстановлено: 04.10.2021 Дата внесения записи в Государственный реестр: 04.10.2021 Дата публикации и номер бюллетеня: 04.10.2021 Бюл. №28 Стр.: 1 па ССДСУРЬ ЕП

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05-01-2012 дата публикации

Solid catalyst component and catalyst for polymerization of olefins, and process for production of olefin polymers using same

Номер: US20120004378A1
Автор: Motoki Hosaka
Принадлежит: Toho Titanium Co Ltd

A solid catalyst component for olefin polymerization is produced by causing (a) a solid component that includes magnesium, titanium, a halogen, and an electron donor, (b) an aminosilane compound shown by the following general formula (1), and (c) at least one organosilicon compound selected from an organosilicon compound shown by the following general formula (2-A) and an organosilicon compound shown by the following general formula (2-B) to come in contact with each other. A polymer having high stereoregularity is produced in high yield while achieving a high melt flow rate due to hydrogen by polymerizing an olefin in the presence of a catalyst that includes the solid catalyst component. R 1 n Si(NR 2 R 3 ) 4-n   (1) [CH 2 ═CH—(CH 2 ) 1 ] q SiR 4 4-q   (2-A) R 5 Si(OR 6 ) 4-s   (2-B)

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09-02-2012 дата публикации

Catalyst and process for obtaining catalyst of high activity

Номер: US20120035047A1
Принадлежит: Petroleo Brasileiro SA Petrobras

The present invention relates to a process for obtaining a catalyst of high activity based on a mixture of supports, more specifically, the mixture of supports being Al 2 O 3 plus MgCl 2 , intended for the production of polyolefins. The catalyst of the present invention involves the use of a spherical support based on special alumina that serves as a porous matrix, which is impregnated, by precipitation, with magnesium chloride by dissolving the latter in ethers and/or alcohols.

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16-02-2012 дата публикации

Method of controlling polymer architecture

Номер: US20120041147A1
Принадлежит: Nova Chemicals International SA

Carbon dioxide is used to control the ratio of polymer components in a polyethylene composition made using a combination catalyst comprising a chromium catalyst, a single site catalyst and one or more activators.

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23-02-2012 дата публикации

Sequential Formation of Ziegler-Natta Catalyst Using Non-blended Components

Номер: US20120046429A1
Принадлежит: Fina Technology Inc

Catalyst compositions, methods of forming the same and polymers formed therefrom are described herein. The methods of forming the catalysts generally include contacting an alkyl magnesium compound with a viscosity modifier prior to contact with an alcohol to form a magnesium dialkoxide compound; contacting the magnesium dialkoxide compound with a first titanium alkoxide and a first agent to form a first solution reaction product “A”, wherein the titanium alkoxide and the first agent are non-blended individual components prior to contacting the magnesium dialkoxide; contacting the first solution reaction product “A” with a second titanium alkoxide to form a second solution reaction product “B”; contacting the second solution reaction product “B” with a second agent to form a first solid reaction product “C”; contacting the first solid reaction product “C” with a third agent to form a second solid reaction product “D”; and contacting the second solid reaction product “D” with a reducing agent to limn a catalyst component.

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23-02-2012 дата публикации

Transportable and Safely Packaged Organic Peroxide Formulations

Номер: US20120046430A1
Автор: Philippe Maj
Принадлежит: Arkema France SA

The present invention relate to a packaged peroxide formulation which comprises a container and a liquid peroxide formulation, wherein: said container has a volume of at least 50 litres, said liquid peroxide formulation comprises (i) 51 to 59 wt % of an organic peroxides selected from the group consisting of peroxyesters, their derivatives, and mixtures thereof, and (ii) optionally an additive selected from the group consisting of a phlegmatiser. The invention also relates to a method to safely produce, handle and transport a packaged organic peroxide formulations as defined above.

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15-03-2012 дата публикации

Ethylene-a-olefin copolymer and article

Номер: US20120065352A1
Принадлежит: Sumitomo Chemical Co Ltd

An ethylene-α-olefin copolymer comprising monomer units derived from ethylene and monomer units derived from an α-olefin having 3 to 20 carbon atoms, having a density (d) of 860 to 950 kg/m 3 , having a melt flow rate (MFR) of 0.05 to 100 g/10 min, having a ratio (Mw/Mn) of the weight average molecular weight (Mw) thereof to the number average molecular weight (Mn) thereof of 2 to 10, having a swell ratio (SR) of less than 1.35, and having a g* of 0.50 to 0.75.

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12-04-2012 дата публикации

Process for producing steam using heat recovered from a polymerization reaction

Номер: US20120088892A1
Принадлежит: Total Petrochemicals Research Feluy SA

The present invention relates to a process for producing steam using heat recovered from a polymerization reaction. In particular, the present invention relates to a process for producing steam using heat recovered from a polymerization reaction for producing polyolefin, comprising the steps of: thermally contacting said polymerization reaction with a cooling fluid such that the cooling fluid removes heat from said reaction, thermally contacting at least part of said cooling fluid with at least one absorption cycle thereby transferring heat from the cooling fluid to said absorption cycle, using said absorption cycle to produce steam from a condensate, wherein the cooling fluid is used as a hot source for heating at least one evaporator and at least one generator comprised in said at least one absorption cycle. The present invention also relates to a process for cooling a polymerization reaction using a process as described herein. Said invention also relates to a polyolefin producing unit.

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19-04-2012 дата публикации

Multiple Loop Reactor for Olefin Polymerization

Номер: US20120093693A1
Автор: Hugo Vandaele
Принадлежит: Total Petrochemicals Research Feluy SA

The present invention provides a multiple loop reactor suitable for polymerizing olefins comprising at least two interconnected loop reactors, whereby said connection essentially consists of one or more transfer lines suitable for transferring polymer slurry from a reactor to another reactor and whereby said transfer line extends substantially horizontally. The invention further relates to a process for producing olefin polymers in a multiple loop react or according to the invention. The invention also relates to the use of a transfer line for transferring polymer slurry from a reactor to another reactor in a multiple loop reactor comprising at least two interconnected loop reactors, whereby said transfer line extends substantially horizontally.

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03-05-2012 дата публикации

Polyethylene Composition and Finished Products Made Thereof

Номер: US20120108766A1
Принадлежит: BASELL POLYOLEFINE GMBH

Novel polyethylenes having defined molecular weight distribution and LCB structure are devised, for films or mouldings.

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10-05-2012 дата публикации

Solution polymerization process and procatalyst carrier systems useful therein

Номер: US20120116034A1
Принадлежит: Dow Global Technologies LLC

A procatalyst carrier system which includes one or more paraffinic solvents, one or more paraffin-insoluble procatalysts, and optionally one or more cocatalysts wherein the carrier system is in the form of a slurry is provided. Also provided is a process including selecting one or more paraffin-insoluble organometallic procatalysts; adding the one or more procatalysts to a sufficient quantity of paraffinic solvent to form a slurry of the one or more procatalysts in the paraffinic solvent; introducing one or more first cocatalysts into a polymerization reactor; and introducing the slurry into the polymerization reactor; a reaction product of the process and articles made from the reaction product.

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17-05-2012 дата публикации

Novel combinations of silane electron donors for use in catalyst compositions

Номер: US20120123068A1
Принадлежит: Fina Technology Inc

Disclosed is a process for preparing an olefinic polymer comprising contacting at least one olefinic C3+ monomer and a catalyst composition comprising a Ziegler-Natta catalyst, dicyclopentyl dimethoxysilane as a first electron donor, and a second electron donor selected from the group consisting of methyl trimethoxysilane, methyl triethoxysilane, dimethyl dimethoxysilane, and mixtures thereof, under reaction conditions suitable to form an olefinic polymer. The polymer prepared using this method may exhibit significantly broadened molecular weight distribution than that achieved using any of the silane compounds alone, and may also exhibit desirable melt flow characteristics and xylene solubles levels.

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17-05-2012 дата публикации

Catalytic Systems Made of a Complex of Rare Earths For Stereospecific Polymerisation Of Conjugated Dienes

Номер: US20120123070A1

La present invention relates to a multi-component catalytic system that can be used for the cis-1,4 stereospecific polymerization of conjugated dienes. The system is based on: (i) a rare-earth complex of Formula (II) Ln(A) 3 (B) n , Ln being a rare-earth metal, A a ligand, B a Lewis base or a solvent molecule and n a number from 0 to 3; (ii) an alkylating agent; (iii) a compound based on an aromatic ring and having at least two heteroatoms chosen from the elements O, N, S, P, and corresponding to the Formula (III): in which the R groups each denote hydrogen, an alkyl radical optionally comprising one or more heteroatoms (N, O, P, S, Si) or one or more halogen atoms, a halogen atom, a group based on one or more heteroatoms (N, O, P, S, Si); x and y are integers from 0 to 6; D is a group having a chemical function, one of the atoms of which has a non-bonding pair; L being an atom from column 1 of the Periodic Table.

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24-05-2012 дата публикации

Process for the preparation of ethylene polymers with narrow molecular weight distribution

Номер: US20120130031A1
Принадлежит: Basell Poliolefine Italia Srl

Process for the preparation of ethylene polymers having narrow MWD characterized by a F/E ratio lower than 35 carried out in the presence of a catalyst system comprising (a) a solid catalyst component comprising Ti atoms that are substantially in the +4 oxidation state, Mg, Cl, and optionally OR groups and internal donors in which R is a C1-C20 hydrocarbon group, in which the OR/Ti molar ratio is equal to or lower than 0.35 and the internal donor/Ti ratio is lower than 1, (b) an aluminum alkyl compound and (c) a compound selected from alkoxybenzenes of specified formula.

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31-05-2012 дата публикации

Process for the Production of Polyolefins with Broad Molecular Weight Distribution

Номер: US20120136106A2
Принадлежит: Borealis AG

The present invention is directed to a propylene homo- or copolymer having a polydispersity index (PI), determined according ISO 6721-1, of at least 7.0 Pa −1 ; and a tensile modulus, determined according to ISO 527-2, of at least 1600 MPa measured on a test specimen prepared by injection molding according to ISO 1873-2. The present invention is furthermore directed to a process for the production of polyolefins in one or more reactors, wherein in at least one reactor the process comprises the following steps (c) feeding one or more (co)monomers and hydrogen to said at least one reactor, whereby the hydrogen concentration in said at least one reactor is periodically varied; (d) preparing an olefin homo- or copolymer in the presence of an olefin polymerization catalyst; (e) withdrawing the olefin homo- or copolymer from said at least one reactor whereby the following relation is fulfilled P H τ > 2.0 wherein P H is the time of one variation period in said at least one reactor; and τ is the average residence time of the polymer in said at least one reactor.

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07-06-2012 дата публикации

Process for Producing Broader Molecular Weight Distribution Polymers with a Reverse Comonomer Distribution and Low Levels of Long Chain Branches

Номер: US20120141710A1
Принадлежит: Chevron Phillips Chemical Co LP

The present invention provides a polymerization process which is conducted by contacting an olefin monomer and at least one olefin comonomer in the presence of hydrogen and a metallocene-based catalyst composition. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, low levels of long chain branches, and a ratio of Mw/Mn from about 3 to about 6.

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07-06-2012 дата публикации

Catalyst component for the polymerization of olefins

Номер: US20120142873A1
Принадлежит: BASELL POLYOLEFINE GMBH

A solid catalyst component comprising the product of a process comprising (a) reacting a magnesium alcoholate of formula Mg(OR 1 )(OR 2 ) compound, in which R 1 and R 2 are identical or different and are each an alkyl radical having 1 to 10 carbon atoms, with titanium tetrachloride carried out in a hydrocarbon at a temperature of 50-100° C., (b) subjecting the reaction mixture obtained in (a) to a heat treatment at a temperature of 110° C. to 200° C. for a time ranging from 3 to 25 hours (c) isolating and washing with a hydrocarbon the solid obtained in (b), said solid catalyst component having a Cl/Ti molar ratio higher than 2.5.

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07-06-2012 дата публикации

Borohydride Metallocene Complex of a Lanthanide, Catalytic System Including Said Complex, Polymerization Method Using Same and Ethylene/Butadiene Copolymer Obtained Using Said Method

Номер: US20120142905A1

Borohydride metallocene complex of lanthanide, preparation process, catalytic system incorporating borohydride metallocene complex, process for copolymerization of olefins employing catalytic system. The complex corresponds to one or other of formulae A and B: where, in A, two ligands Cp 1 , Cp 2 , each composed of a cyclopentadienyl group, are connected to the lanthanide Ln, such as Nd, and where, in B, a ligand molecule, composed of two cyclopentadienyl groups Cp 1 , Cp 2 connected to one another via a bridge P of formula MR 1 R 2 , M is an element from group IVa, and R 1 and R 2 , which are identical or different, represent an alkyl group comprising from 1 to 20 carbon atoms, is connected to the lanthanide Ln, L is alkali metal, N is molecule of a complexing solvent, x is integral or non-integral number≧0, p is integer≧than 1 and y is integer≧0.

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21-06-2012 дата публикации

Process for Producing Procatalyst Composition with Alkoxyalkyl Ester Internal Electron Donor and Product

Номер: US20120157295A1
Принадлежит: Dow Global Technologies LLC

Disclosed herein are processes for preparing procatalyst compositions with an internal electron donor containing greater than 4.5 wt % of a compounded alkoxyalkyl ester. Also disclosed are catalyst compositions containing the procatalyst composition and polymers, i.e., propylene-based polymers, produced therefrom. The present procatalyst compositions improve catalyst selectivity, catalyst activity, procatalyst morphology and polymer particle morphology, and improve hydrogen response during olefin polymerization.

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05-07-2012 дата публикации

Polyolefin and preparation method thereof

Номер: US20120172548A1
Принадлежит: LG Chem Ltd

A polyolefin has 1) a density in the range of 0.93 to 0.97 g/cm 3 , 2) a BOCD (Broad Orthogonal Co-monomer Distribution) index defined by a given equation in the range of 1 to 5, and 3) a molecular weight distribution (weight average molecular weight/number average molecular weight) in the range of 4 to 10. A supported hybrid metallocene catalyst comprises a first metallocene compound represented by a first given formulae, a second metallocene compound represented by one of three given formulae, and a support.

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26-07-2012 дата публикации

Polyethylene cross-linked with an anthocyanin

Номер: US20120187607A1
Принадлежит: Howmedica Osteonics Corp

A method for manufacturing of ultrahigh molecular weight polyethylene (UHMWPE) for implants, where the implants have been machined out of UHMWPE blocks or extruded rods, has anthocyanin dispersely imbedded in the polyethylene. The implant is then exposed to γ ray or electron beam irradiation in an amount of at least 2.5 Mrad followed by a heat treatment to prevent the implant from becoming brittle in the long term as well as to improve strength and wear. The method includes mixing a powder or granulate resin of UHMWPE with an aqueous liquid that contains anthocyanin in a predetermined amount. The water is evaporated in order to deposit the anthocyanin in a predetermined concentration on the polyethylene particles. The doped UHMWPE particles are compressed into blocks at temperatures in a range of approximately 135° C.-250° C. and pressures in a range of approximately 2-70 MPa. Medical implants are made from the blocks.

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09-08-2012 дата публикации

Halogen Substituted Heteroatom-Containing Metallocene Compounds for Olefin Polymerization

Номер: US20120202956A1
Принадлежит: ExxonMobil Chemical Patents Inc

Halogen substituted metallocene compounds are described and comprise one or more monocyclic or polycyclic ligands that are pi-bonded to the metal atom and include at least one halogen substituent directly bonded to an sp 2 carbon atom at a bondable ring position of the ligand, wherein the or at least one ligand has one or more ring heteroatoms in its cyclic structure. When combined with a suitable activator, these compounds show activity in the polymerization of olefins, such as ethylene and propylene.

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16-08-2012 дата публикации

Ziegler-natta catalysts doped with non-group iv metal chlorides

Номер: US20120208969A1
Автор: David Knoeppel, Lei Zhang
Принадлежит: Fina Technology Inc

Ziegler-Natta catalysts, processes of forming the same and using the same are described herein. The process generally includes contacting a metal component with a magnesium dihalide support material to form a Ziegler-Natta catalyst precursor; contacting the support material with a dopant including a non-Group IV metal halide to form a doped catalyst precursor; and activating the doped catalyst precursor by contact with an organoaluminum compound to form a Ziegler-Natta catalyst.

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23-08-2012 дата публикации

Polymer Compositions for Rotational Molding Applications

Номер: US20120214954A1
Принадлежит: Chevron Phillips Chemical Co LP

A polymer having a density of from about 0.94 g/cm 3 to about 0.96 g/cm 3 and a primary structure parameter 2 (PSP2 value) of greater than about 8.5, wherein an article formed from the polymer has an environmental stress crack resistance of equal to or greater than about 1000 hours when measured in accordance with ASTM D 1693 condition A. A polymer having at least one lower molecular weight component and at least one higher molecular weight component and having a PSP2 value of equal to or greater than about 8.5, wherein an article formed from the polymer has an environmental stress crack resistance of greater than about 1000 hours when measured in accordance with ASTM D 1693 condition A.

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13-09-2012 дата публикации

Process for the preparation of impact resistant propylene polymer compositions

Номер: US20120232221A1
Принадлежит: Basell Poliolefine Italia Srl

A process for the preparation of propylene polymer compositions comprising from 50 to 90% by weight of a propylene polymer fraction insoluble in xylene at 25° C., and from 10 to 50% by weight of an ethylene copolymer fraction soluble in xylene at 25° C., said process being carried out in the presence of a specific catalyst system, is also characterized by the following step: (i) contacting the catalyst components (a), (b) and optionally (c) for a period of time ranging from 0.1 to 120 minutes, at a temperature ranging from 0 to 90° C.; (ii) polymerizing propylene in the optional presence of ethylene and/or C 4 -C 10 alpha olefins producing a propylene (co)polymer being for at least 85% by weight of insoluble in xylene at 25° C. and (iii) in a successive step, carried out in gas-phase, in the presence of the product coming from (ii), polymerizing mixtures of ethylene with a-olefins CH 2 ═CHR in which R is a hydrocarbon radical having 1-10 carbon atoms, to produce an ethylene copolymer. An increased reactivity in the last step is observed.

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13-09-2012 дата публикации

Component Separations in Polymerization

Номер: US20120232231A1
Принадлежит: Chevron Phillips Chemical Co LP

A process for component separation in a polymer production system, comprising separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane and unreacted ethylene, distilling the gas stream into a light hydrocarbon stream, wherein the light hydrocarbon stream comprises ethane and unreacted ethylene, contacting the light hydrocarbon stream with an absorption solvent system, wherein at least a portion of the unreacted ethylene from the light hydrocarbon stream is absorbed by the absorption solvent system, and recovering a waste gas stream from the absorption solvent system, wherein the waste gas stream comprises ethane, hydrogen, or combinations thereof.

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20-09-2012 дата публикации

Process for the polymerisation of olefins

Номер: US20120238714A1
Принадлежит: Ineos Commercial Services UK Ltd

The present invention relates to a process for polymerisation of olefins, in particular gas phase polymerisation of olefins, with the aid of a supported chromium oxide based catalyst.

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27-09-2012 дата публикации

Propylene polymer with improved processability in thermoforming

Номер: US20120242003A1
Принадлежит: Total Petrochemicals Research Feluy SA

The present invention concerns a propylene polymer comprising at least two propylene polymer fractions of different melt flow index and a minor amount of at least one comonomer, said propylene polymer being further characterized by specific ranges for melt flow index, xylene solubles content and recovery compliance. Said propylene polymer is particularly suited for thermoforming. The present invention further concerns a process for producing said propylene polymer as well as its use in thermoforming.

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27-09-2012 дата публикации

Polyolefins Prepared from a Metallocene and a New Single Site Catalyst Components in a Single Reactor

Номер: US20120245021A1
Автор: Abbas Razavi
Принадлежит: Total Petrochemicals Research Feluy SA

The present invention discloses a catalyst system based on a metallocene catalyst component and a new single site catalyst component for the production in a single reactor of improved polyolefins having a bimodal molecular weight distribution.

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04-10-2012 дата публикации

Catalysts

Номер: US20120252993A1
Принадлежит: BOREALIS TECHNOLOGY OY

A complex containing a ligand of formula (I): useful in the formation of olefin polymerization catalysts and their use in olefin polymerization.

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25-10-2012 дата публикации

Catalysts

Номер: US20120271016A1
Принадлежит: Oxford University Innovation Ltd

The present invention relates to novel metallocene catalysts of formula I, which is defined herein. The present invention also provides processes for making these catalysts and their use in olefin polymerisation reactions.

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01-11-2012 дата публикации

Emulsion process for improved large spherical polypropylene catalysts

Номер: US20120277090A1
Принадлежит: BASF Corp

Disclosed are spherical magnesium-based catalyst supports and methods of using the same in a Ziegler-Natta catalyst system for the polymerization of an olefin. The spherical magnesium-based catalyst supports are made by reacting a magnesium halide, a haloalkylepoxide, and a phosphate acid ester in an organic solvent that does not have to contain substantial amounts of toluene.

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01-11-2012 дата публикации

Ethylene-based polymer compositions for use as a blend component in shrinkage film applications

Номер: US20120277380A1
Принадлежит: Dow Global Technologies LLC

An ethylene-based polymer composition has been discovered and is characterized by a Comonomer Distribution Constant greater than about 45. The new ethylene-based polymer compositions and blends thereof with one or more polymers, such as LDPE, are useful for making many articles, especially including films.

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01-11-2012 дата публикации

Process of Melt Index Control

Номер: US20120277386A1
Принадлежит: Chevron Phillips Chemical Co LP

A method comprising contacting an olefin in the presence of a catalyst and a melt index modifier (MIM) under conditions suitable to form a polyolefin and recovering the polyolefin, wherein the polyolefin melt index is increased by at least about 25%, wherein the normalized catalyst activity is decreased by less than about 10%, and wherein the MIM is characterized by the general formula R 1 —HC═CH—R 2 or R 3 R 4 C═CH 2 where R 1 , R 2 , R 3 , R 4 are each selected from the group consisting of a non-aromatic organyl group.

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08-11-2012 дата публикации

Bimodal polyethylene for injection stretch blow moulding applications

Номер: US20120282422A1
Принадлежит: Total Petrochemicals Research Feluy SA

A polyethylene resin having a multimodal molecular weight distribution comprising at least two polyethylene fractions A and B, fraction A being substantially free of comonomer and having a lower weight average molecular weight and a higher density than fraction B, each fraction prepared in different reactors of two reactors connected in series in the presence of a Ziegler-Natta catalyst system, the polyethylene resin having a density of from 0.950 to 0.965 g/cm 3 and a melt index MI2 of from 0.5 to 5 g/10 min.

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08-11-2012 дата публикации

Polymerization process in the presence of an antistatic agent

Номер: US20120283369A1
Принадлежит: BASELL POLYOLEFINE GMBH

Process for the polymerization of olefins at temperatures of from −20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst and an antistatic agent, wherein the antistatic agent is an antistatically acting composition comprising a polysulfone copolymer, a polymeric compound comprising basic nitrogen atoms, an oil-soluble sulfonic acid and optionally a solvent and the polysulfone copolymer, the polymeric compound comprising basic nitrogen atoms and the oil-soluble sulfonic acid constitute together at least 1 wt. % of the antistatically acting composition, and wherein the antistatically acting composition, when contacted as solution or suspension in heptane, wherein the solution or suspension has a concentration of about 80 g of the antistatically acting composition per liter of heptane, with a 2 M solution of triethylaluminum in heptane at 0° C., generates less than 5 cm 3 , measured at 23° C. and atmospheric pressure, of ethane per gram of the antistatically acting composition and use of an antistatically acting composition as antistatic agent for the polymerization of olefins at temperatures of from −20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst.

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08-11-2012 дата публикации

High melt strength polyethylene compositions and methods for making the same

Номер: US20120283390A1
Принадлежит: Dow Brasil SA, Dow Global Technologies LLC

The present invention is a method for increasing the melt strength of a polyethylene resin comprising reacting the polyethylene resin with a free radical generator with a decomposition energy in between −50 kJoule/mole and −250 kJoules/mole and a peak decomposition temperature of less than 280 degree C. The resulting resin has increased melt strength with higher ratio of elongational viscosities at 0.1 to 100 rad/s when compared to substantially similar polyethylene resins which have not been reacted with a free radical generator such as an alkoxy amine derivative.

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08-11-2012 дата публикации

Process for the preparation of a multimodal polyolefin polymer with improved hydrogen removal

Номер: US20120283396A1
Принадлежит: BASELL POLYOLEFINE GMBH

Process for the preparation of a multimodal polyolefin polymer at temperatures of from 40 to 150° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst in a first and a second polymerization reactor connected in series, wherein further polymerization reactors can be connected to said reactors upstream or downstream of said reactors, in which in the first polymerization reactor a first polyolefin polymer is prepared in suspension in the presence of hydrogen and in the second polymerization reactor a second polyolefin polymer is prepared in the presence of a lower concentration of hydrogen than in the first polymerization reactor, comprising a) withdrawing from the first polymerization reactor a suspension of solid polyolefin particles in a suspension medium comprising hydrogen; b) feeding the suspension to a flash drum of a lower pressure than that of the first polymerization reactor; c) vaporizing a part of the suspension medium; d) withdrawing a hydrogen-depleted suspension from the flash drum and feeding it to the second polymerization reactor; e) withdrawing gas from the gas-phase of the flash drum and feeding it to a heat exchanger; f) condensing a part of the gas withdrawn from the flash drum; and g) returning the liquid obtained in the heat exchanger to the polymerization process at a point where suspension is present, and apparatus for preparing a multimodal polyolefin polymer according to the process.

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15-11-2012 дата публикации

Process for the gas phase polymerisation of olefins

Номер: US20120289666A1
Принадлежит: Ineos Commercial Services UK Ltd

The present invention relates to a process for the gas phase polymerisation of olefins, and, in particular, to a process for the gas phase polymerisation of olefins with recycle of fines to the reaction zone.

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22-11-2012 дата публикации

Blownfilm grade showing superior stiffness, transparency and processing behaviour

Номер: US20120295994A1
Принадлежит: Borealis AG

Extrusion blown film comprising a polypropylene composition, said polypropylene composition comprises a random propylene copolymer, a high melt strength polypropylene, a polypropylene and optionally a clarifier, wherein • the random propylene copolymer comprises units derived from propylene and at least another C 2 to C 20 α-olefin, • the high melt strength polypropylene has a branching index g′ of less than 1.0, the polypropylene (B) has a MFR 2 (230° C.) of at least 400 g/10 min, • the clarifier comprises at least one α-nucleating agent, and wherein further • the branching index g′ of the random propylene copolymer and the branching index g′ of the polypropylene are higher than the branching index g′ of the high melt strength polypropylene, • the random propylene copolymer has lower melt flow rate MFR 2 (230° C.) than the polypropylene, • the extrusion melt blown film and/or the polypropylene composition (i) fulfill(s) the equation (I) Tm−Tc<30 (I) wherein Tm is the melting tempareture [° C.] making up more than 50% of the total melting enthalpy Hm of the extrusion melt blown film or of the polypropylene composition; Tc is the crystallization temperature [° C.] of the extrusion melt blown film or of the polypropylene composition; and/or (ii) has (have) a melt flow rate MFR 2 (230° C.) of 1.0 to 5.5 g/10 min

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29-11-2012 дата публикации

Propylene polymers with improved properties

Номер: US20120302680A1
Принадлежит: BOREALIS TECHNOLOGY OY

The invention relates to novel propylene polymers with improved properties especially with improved stiffness and impact strength comprising propylene homopolymers or propylene block copolymers with 90.0 to 99.9 wt % propylene and 0.1 to 10 wt % α-olefins with 2 or 4 to 18 carbon atoms, or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are β-nucleated propylene polymers, whereby the β-nucleated propylene homopolymers have an Irτ≧0.98 and the values for tensile modulus and Charpy impact strength as specified herein. The β-nucleated propylene block copolymers are polymers having an IRτ of the propylene homopolymer block of ≧0.98 and the values for tensile modulus and Charpy impact strength as also specified herein. The propylene polymers with an improved property spectrum are suitable for producing molded parts in a pipe system, such as pipes and fittings, inspection chambers, pipe ducting systems, extrusion or compression molded sheets and the like.

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29-11-2012 дата публикации

Magnesium halide adducts, catalyst components and catalysts comprising the same, and preparation processes thereof

Номер: US20120302708A1

A magnesium halide adduct is provided, comprising at least one compound of the formula MgXY, at least one compound of the formula ROH, methanol, at least one modifying agent chosen from DOE and o-hydroxy benzoates, and optionally water. Also provided herein are a catalyst component comprising the magnesium halide adduct, a catalyst for olefin polymerization comprising the catalyst component; the respective processes for preparing the magnesium halide adduct and the catalyst component; use of the magnesium halide adduct for preparing the catalyst component, use of the catalyst component in a catalyst for olefin polymerization and use of the catalyst in olefin polymerization; and a process of olefin polymerization.

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13-12-2012 дата публикации

Modified phosphinimine catalysts for olefin polymerization

Номер: US20120316297A1
Принадлежит: Nova Chemicals International SA

Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.

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27-12-2012 дата публикации

Catalyst Components for the Polymerization of Olefins

Номер: US20120329963A1
Принадлежит: Basell Poliolefine Italia Srl

The present invention relates to catalysts component for the polymerization of ethylene and its mixtures with olefins CH 2 ═CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising Ti, Mg, halogen, and electron donor belonging to 1,2-diethers as internal electron donor compound. The catalyst of the invention is suitably used in (co)polymerization processes of ethylene to prepare (co)polymers having narrow Molecular Weight Distribution (MWD) and high bulk density.

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03-01-2013 дата публикации

Flashline heater system and method

Номер: US20130005929A1
Принадлежит: Chevron Phillips Chemical Co LP

The present embodiments provide a system and method for separation within a polymer production process. Specifically, a flashline heater configured according to present embodiments may provide more time than is required for complete vaporization of liquid hydrocarbons that are not entrained within a polymer fluff produced within a polymerization reactor. Such extra time may allow for liquid hydrocarbons that are entrained within the polymer fluff to be vaporized.

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24-01-2013 дата публикации

Catalysts based on heterocyclic-8-anilinoquinoline ligands

Номер: US20130023635A1
Принадлежит: EQUISTAR CHEMICALS LP

A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises an activator and a Group 4 metal complex. The complex incorporates a dianionic, tridentate heterocyclic-8-anilinoquinoline ligand. In one aspect, a supported catalyst system is prepared by first combining a boron compound having Lewis acidity with excess alumoxane to produce an activator mixture, followed by combining the activator mixture with a support and the dianionic, tridentate Group 4 metal complex. The Group 4 metal complexes are easy to synthesize, support, and activate, and they enable facile production of high-molecular-weight polyolefins.

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31-01-2013 дата публикации

Process for preparing polyolefin

Номер: US20130030132A1
Принадлежит: Total Petrochemicals Research Feluy SA

The invention relates to a process for preparing polyolefin in a loop reactor. The polymer is prepared by polymerizing olefin monomers in the presence of a catalyst to produce a polyolefin slurry while pumping said slurry through said loop reactor by means of a pump. The present process is characterized in that the catalyst is fed in the loop reactor at a distance to the pump. The invention allows production of the polymer with advantageous properties while leading to fewer blockages of the reactor.

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31-01-2013 дата публикации

Ziegler catalyst and method of synthesizing the same

Номер: US20130030134A1
Принадлежит: PETROCHEMICAL RES AND Tech CO

The various embodiments herein disclose a method for making a Zieglaer catalyst including a reaction product of a dispersed magnesium alkoxide or a dispersed mixture of magnesium alkoxide and silica with a transition metal compound of titanium, zirconium, vanadium or chromium, and a chlorine containing organoaluminum mixed together with two additional components comprising a halogen containing silicon compound and aliphatic primary halogenated hydrocarbons respectively. The embodiments also provide a method of polymerization of 1-olefin monomers using the Ziegler catalyst.

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14-02-2013 дата публикации

Propylene-based polymer, articles, and process for producing same

Номер: US20130041113A1
Принадлежит: Linfeng Chen, William G. Sheard

Disclosed are propylene-based polymer compositions and processes for producing same. Polymerization with an improved catalyst composition provides a propylene-based polymer with improved stiffness.

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14-02-2013 дата публикации

Catalyst component for olefin polymerization reaction and catalyst comprising same

Номер: US20130041120A1
Принадлежит: China Petroleum and Chemical Corp

A catalyst component for olefin polymerization comprising magnesium, titanium, halogen and electron donor, wherein the electron donor is selected from at least one of the diol diester compounds, when the diol diester comprised contains a certain amount of isomer with Fischer projection formula as shown in Formula (II), the activity and stereospecificity of the catalyst are greatly improved, especially in the production of polymers with high melt index, the isotactic index of the obtained polymers is improved substantially.

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28-02-2013 дата публикации

Semi continuous process for the synthesis of a catalyst for use in the manufacture of polyolefins

Номер: US20130053521A1
Принадлежит: Reliance Industries Ltd

A semi-continuous process and system thereof, for the synthesis of a narrow particle size distribution Zeigler Natta procatalyst for use in the manufacture of polyolefins. The process comprises: (a) mixing a reaction mixture containing a titanium compound; (b) charging a first reactor with said reaction mixture; (c) removing excess reactants from said first reactor as a filtrate; (d) feeding said filtrate to at least one further reactor; and continuously removing excess reactants from said at least further reactor.

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28-02-2013 дата публикации

Polymerization Process for Producing Bimodal Polymers

Номер: US20130053523A1
Принадлежит: Chevron Phillips Chemical Co LP

Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided.

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28-02-2013 дата публикации

Production of Substituted Phenylene Dibenzoate Internal Electron Donor and Procatalyst with Same

Номер: US20130053525A1
Принадлежит: Dow Global Technologies LLC

The present disclosure is directed to the production of substituted phenylene aromatic diesters and 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate (or “BMPD”) in particular. The processes disclosed herein produce a liquid BMPD product. The liquid BMPD product unexpectedly creates production efficiencies by reducing the number of production steps, reducing the amount and/or number of reagents required for BMPD production. The liquid BMPD product may also be utilized in procatalyst production yielding similar production efficiencies. The procatalyst composition is subsequently used for olefin polymerization.

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07-03-2013 дата публикации

Process for preparing high-reactivity isobutene homo- or copolymers

Номер: US20130059995A1
Принадлежит: Individual

Preparation of high-reactivity isobutene homo- or copolymers with a content of terminal vinylidene double bonds per polyisobutene chain end of at least 50 mol % and a polydispersity of preferably 1.05 to less than 3.5, by polymerizing isobutene or an isobutene-comprising monomer mixture in the presence of an aluminum trihalide-donor complex effective as a polymerization catalyst or of an alkylaluminum halide-donor complex, especially of an aluminum trichloride-donor complex, said complex comprising, as the donor, an organic compound with at least one ether function or a carboxylic ester function.

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14-03-2013 дата публикации

POLYETHYLENE CROSS-LINKED WITH AN ANTHOCYANIN

Номер: US20130064711A1
Принадлежит: HOWMEDICA OSTEONICS CORP.

A method for manufacturing of ultrahigh molecular weight polyethylene (UHMWPE) for implants, where the implants have been machined out of UHMWPE blocks or extruded rods, has anthocyanin dispersely imbedded in the polyethylene. The implant is then exposed to γ ray or electron beam irradiation in an amount of at least 2.5 Mrad followed by a heat treatment to prevent the implant from becoming brittle in the long term as well as to improve strength and wear. The method includes mixing a powder or granulate resin of UHMWPE with an aqueous liquid that contains anthocyanin in a predetermined amount. The water is then evaporated to deposit the anthocyanin in a predetermined concentration on the polyethylene particles. The doped UHMWPE particles are compressed into blocks at temperatures in a range of approximately 135° C.-250° C. and pressures in a range of approximately 2-70 MPa. Medical implants are made from the blocks. 1. A method of making cross-linked ultra-high molecular weight polyethylene material comprising:combining a solution of anthocyanin material and ultra-high molecular weight polyethylene (UHMWPE) powder to form a doped ultra-high-molecular weight polyethylene wherein the anthocyanin is uniformly blended with the UHMWPE powder after drying; andconsolidating the doped powder to form a material having a color from light pink to deep red.2. The method as set forth in wherein the concentration of anthocyanin is between 0.005 and 5% by weight.3. The method as set forth in wherein a pink color is produced by a concentration of 0.005 by weight.4. The method as set forth in wherein the anthocyanin and the UHMWPE powder is blended in a blender prior to drying.5. The method as set forth in wherein the blend is dryed under nitrogen.6. The method of further comprising the step of irradiating the consolidated doped UHMWPE and heating the doped UHMWPE after irradiating.7. The method of further comprising the step of forming the irradiated and heated doped ultra-high ...

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14-03-2013 дата публикации

Olefin gas phase polymerisation

Номер: US20130066027A1
Принадлежит: Saudi Basic Industries Corp

The invention is directed to a process for the gas phase polymerisation of one or more olefin monomers in a fluidised bed reactor in a dry mode or in a (super) condensed mode with a gas stream comprising an inert gas characterised in that the inert gas comprises a mixture of inert components: (1) nitrogen; (2) a gas heat capacity increasing agent (3) a sorption promoting agent and (4) a polymer swelling agent. The inert gas may comprise (1) 5-60% by mol nitrogen (2) 10-90% by mol ethane (3) 1-50% by mol % n-butane and (4) 0.1-10% by mol % n-pentane or iso-pentane.

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21-03-2013 дата публикации

Barrier layer, a process of making a barrier layer and uses thereof

Номер: US20130071672A1

There is provided a barrier layer comprising silicate chemically coupled to a polymer matrix. There is also provided a process for making the barrier layer and uses thereof.

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21-03-2013 дата публикации

Multifunctional chain shuttling agents

Номер: US20130072639A1
Принадлежит: Dow Global Technologies LLC

The invention generally relates to chain shuttling agents (CSAs), a process of preparing the CSAs, a composition comprising a CSA and a catalyst, a process of preparing the composition, a processes of preparing polyolefins, end functional polyolefins, and telechelic polyolefins with the composition, and the polyolefins, end functional polyolefins, and telechelic polyolefins prepared by the processes.

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21-03-2013 дата публикации

Multifunctional chain shuttling agents

Номер: US20130072640A1
Принадлежит: Dow Global Technologies LLC

The invention generally relates to chain shuttling agents (CSAs), a process of preparing the CSAs, a composition comprising a CSA and a catalyst, a process of preparing the composition, a processes of preparing polyolefins, end functional polyolefins, and telechelic polyolefins with the composition, and the polyolefins, end functional polyolefins, and telechelic polyolefins prepared by the processes.

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21-03-2013 дата публикации

OLEFIN POLYMERIZATION CATALYST AND PREPARATION METHOD AND USE THEREOF

Номер: US20130072647A1
Принадлежит: PETROCHINA COMPANY LIMITED

An olefin polymerization catalyst and preparation method and use thereof are provided. The components of the catalyst comprise an active magnesium halide, a titanium compound containing at least one Ti-halide bond loaded on the active magnesium halide, and an internal electron donor selected from one or more silicon esters compounds having formula (I). The method for preparing the catalyst components is that: adding spherical magnesium chloride alcoholate particles and the electron donor into the solution of titanium compound in sequence, and processing with the titanium compound for one or more times to obtain the catalyst. The catalyst system used for the olefin polymerization comprises the catalyst components, a cocatalyst and an external electron donor. The catalyst has high activity for the propylene polymerization, and the activity is 4399 gPP/gTi·h(50° C., 1 h, slurry polymerization at atmospheric pressure), and the isotacticity of the polymer is 98%. 2. The olefin polymerization catalyst according to claim 1 , wherein the estersil compound is selected from diacyl-substituted silane claim 1 , triacyl-substituted silane or tetraacyl silane.3. The olefin polymerization catalyst according to claim 1 , wherein the estersil compound is selected from:diacetyl-(2,3-epoxy-propoxy)-methyl-silane;diacetyl-(2,3-epoxy-propoxy)-ethenyl-silane;triacetyl-(furan-2-carbonyl)-silane;triacetyl-(thiophene-2-carbonyl)-silane;dimethyl-di-(pyridine-2-acetyl)-silane;methyl-chloro-di-(pyridine-2-acetyl)-silane;dichloro-di-(pyridine-2-acetyl)-silane;tetraacetylsilane;diacetyl-dibutyl-silane;diacetyl-tert-butyloxy-n-butyloxy-silane;diacetyl-dimethyl-silane;diacetyl-methyl-ethenyl-silane;diacetyl-methyl-propenyl-silane;dimethyl-di-propanoyl-silane;diacetyl-diethyl-silane;diacetyl-ethyl-ethenyl-silane;diethyl-di-propanoyl- silane;di-isobutyryl-dimethyl-silane;di-chloracetyl-dimethyl-silane;triacetyl-methyl-silane;diacetyl-(2-chloro-ethyl)-methoxy-silane;diacetyl-butoxy-methyl-silane; ...

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28-03-2013 дата публикации

HIGH MOLECULAR WEIGHT POLYETHYLENE FIBERS AND MEMBRANES, THEIR PRODUCTION AND USE

Номер: US20130079483A1
Принадлежит: TICONA GMBH

In a process for producing an elongated polyethylene component, such as a fiber or membrane, polyethylene powder having a molecular weight of at least 3×10g/mol as determined by ASTM 4020 is dissolved in a solvent to produce an extrudable solution. The solution is then extruded through a die to form an elongated component and at least part of said solvent is removed from the elongated component. The polyethylene powder used in the process is produced by polymerizing ethylene in the presence of a catalyst composition comprising a Group 4 metal complex of a phenolate ether ligand. 1. A process for producing an elongated polyethylene component , the process comprising:{'sup': '5', '(a) dissolving a polyethylene powder having a molecular weight of at least 3×10g/mol as determined by ASTM 4020 in a solvent to produce an extrudable solution,'}(b) extruding said solution through a die to form an elongated component and(c) removing at least part of said solvent from said elongated component, wherein said polyethylene powder is produced by polymerizing ethylene in the presence of a catalyst composition comprising a Group 4 metal complex of a phenolate ether ligand.2. The process of wherein the polyethylene powder has a molecular weight of at least 1×10g/mol claim 1 , preferably at least 3×10g/mol claim 1 , and more preferably from 3×10g/mol to 10×10g/mol claim 1 , as determined by ASTM 4020.3. The process of wherein said elongated component is a fiber or a membrane.4. The process of wherein said elongated component stretched at an elevated temperature below the melting point of the polyethylene.5. The process of wherein the Group 4 metal complex is disposed on a particulate support.6. The process of wherein the particulate support has an average particle size claim 5 , d50 claim 5 , of less than 58 microns claim 5 , preferably less than 50 microns claim 5 , more preferably less than 30 microns claim 5 , more preferably from 4 to 20 microns.7. The process of wherein the ...

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04-04-2013 дата публикации

Dynamic Modulation of Metallocene Catalysts

Номер: US20130085232A1
Автор: Ian C. Stewart
Принадлежит: ExxonMobil Chemical Patents Inc

This invention relates to a process to alter comonomer distribution in a copolymer (as compared to a copolymer made absent the Lewis base modifier) comprising contacting ethylene and one or more C 3 to C 40 comonomers; with a catalyst system comprising: 1) a Lewis base modifier; 2) an activator; and 3) a bridged bisindenyl group 4 transition metal metallocene catalyst compound having a hydrogen atom at least one 2 position.

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04-04-2013 дата публикации

FUNCTIONALIZED ETHYLENE/ALPHA-OLEFIN INTERPOLYMER COMPOSITIONS

Номер: US20130085234A1
Принадлежит: Dow Global Technologies LLC

The invention relates to functionalized interpolymers derived from base olefin interpolymers, which are prepared by polymerizing one or more monomers or mixtures of monomers, such as ethylene and one or more comonomers, to form an interpolymer products having unique physical properties. The functionalized olefin interpolymers contain two or more differing regions or segments (blocks), resulting in unique processing and physical properties. 1. A composition comprising:a multi-block interpolymer that comprises, in polymerized form, at least 50 mole percent ethylene, and one or more copolymerizable comonomers, the multi-block interpolymer havinga comonomer content of a TREF fraction which elutes between 40° C. and 130° C. greater than or equal to the quantity (−0.2013)T+20.07 where T is the numerical value of the peak elution temperature of the TREF fraction being compared, measure in ° C.; andwherein the multi-block interpolymer is functionalized with at least one compound selected from the group consisting of radically graftable unsaturated compounds containing at least one heteroatom.2. The composition of wherein the comonomer content of a TREF fraction which elutes between 40° C. and 130° C. greater than or equal to the quantity (−0.2013)T+21.07 where T is the numerical value of the peak is elution temperature of the TREF fraction being compared claim 1 , measure in ° C.3. The composition of wherein the comonomer content of the TREF fraction elutes between 60° C. and 95° C.4. The composition of wherein the multi-block interpolymer has a density from 0.855 g/cc to 0.935 g/cc.5. The composition of wherein the multi-block interpolymer has a melt temperature claim 1 , Tm claim 1 , from 113° C. to 125° C.6. The composition of wherein the multi-block interpolymer has an Mw/Mn from 1.7 to 3.5.7. The composition of wherein the multi-block interpolymer has an I/Ifrom 6.0 to 9.1.8. The composition of wherein the multi-block interpolymer comprises hard blocks and soft blocks ...

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04-04-2013 дата публикации

OLEFIN-BASED POLYMER AND PREPARATION METHOD THEREOF

Номер: US20130085246A1
Принадлежит: LG Chem Ltd

The present invention relates to an olefin-based polymer which exhibits superior processability and superior adhesive properties and therefore is desirably applicable to a hot-melt adhesive (HMA) or the like, and a preparation method thereof. The olefin-based polymer has a molecular weight distribution (Mw/Mn, PDI) of 2˜3, and a density of 0.85 to 0.88 g/cm, and satisfies the relation of Tc−Tm>0, wherein Tc (° C.) is a crystallization temperature and Tm (° C.) is a melting point. 1. An olefin-based polymer having a molecular weight distribution (Mw/Mn , PDI) of 2˜3 and a density of 0.85 to 0.88 g/cm , and satisfying the relation of Tc−Tm>0 , wherein Tc (° C.) is a crystallization temperature and Tm (° C.) is a melting point.2. The olefin-based polymer according to claim 1 , wherein its weight average molecular weight (Mw) is 1 claim 1 ,000 to 80 claim 1 ,000.3. The olefin-based polymer according to claim 1 , wherein its weight average molecular weight (Mw) is 1 claim 1 ,000 to 30 claim 1 ,000 claim 1 , its melt index under a load of 2.16 kg is more than 500 g/10 min claim 1 , and its zero shear viscosity is 20 Pa*S or less.4. The olefin-based polymer according to claim 1 , wherein its crystallization temperature Tc (° C.) is 60 to 90° C. claim 1 , and its melting point Tm (° C.) is 50 to 70° C.5. (Original The olefin-based polymer according to claim 1 , wherein it is an ethylene-alpha olefin copolymer.6. The olefin-based polymer according to claim 5 , wherein the alpha olefin includes one or more selected from the group consisting of 1-butene claim 5 , 1-pentene claim 5 , 4-methyl-1-pentene claim 5 , 1-hexene claim 5 , 1-heptene claim 5 , 1-octene claim 5 , 1-decene claim 5 , 1-undecene claim 5 , 1-dodecene claim 5 , 1-tetradecene claim 5 , 1-hexadecene claim 5 , and 1-eicosene.7. The olefin-based polymer according to claim 5 , wherein the molar ratio of ethylene: alpha olefin is 1:100 to 100:1.9. The preparation method according to claim 8 , wherein the olefin- ...

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18-04-2013 дата публикации

BIMODAL POLYETHYLENE COMPOSITION AND ARTICLES MADE THEREFROM

Номер: US20130096266A1
Принадлежит: Dow Global Technologies LLC

The invention relates to a polyethylene composition with a bimodal molecular weight distribution and articles made therefrom, such as high topload blow moldings and transmission and distribution pipes. The composition comprises a low-molecular-weight (LMW) ethylene homopolymer component and a homogeneous, high-molecular-weight (HMW) ethylene interpolymer component, wherein the LMW component is characterized as having a molecular weight distribution, MWD, of less than about 8. The composition is characterized as having a bimodal molecular weight distribution, and a ductile-brittle transition temperature, T, of less than −20° C. In some embodiments, the HMW component is characterized by a reverse comonomer distribution. 154-. (canceled)55. A polyethylene composition comprising a low molecular weight (LMW) ethylene homopolymer component , and a high molecular weight (HMW) ethylene interpolymer component , andwherein the high molecular weight component has a reverse comonomer distribution.56. The composition of claim 55 , wherein claim 55 , for the high molecular weight component claim 55 , the molar comonomer content of interpolymer fractions having a Mw greater than claim 55 , or equal to claim 55 , 300 claim 55 ,000 g/mole claim 55 , is at least 25 percent higher than the molar comonomer content of interpolymer fractions having a Mw less than claim 55 , or equal to claim 55 , 100 claim 55 ,000 g/mole.57. The composition of claim 55 , wherein the high molecular weight component has a Mw/Mn less than 4.8.58. The composition of claim 55 , wherein the high molecular weight component has a Mw from about 100 claim 55 ,000 to about 600 claim 55 ,00 g/mole.59. The composition of claim 55 , wherein the composition has a Mw/Mn less than 20. This application claims priority to U.S. Provisional Patent Application Ser. No. 60/313,357 filed on Aug. 17, 2001, and is related to U.S. Provisional Application Ser. No. 60/313,176 filed Aug. 17, 2001, the disclosures of which are ...

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25-04-2013 дата публикации

Process for preparing isobutene homopolymers or copolymers

Номер: US20130102748A1
Принадлежит: BASF SE

Preparation of isobutene homopolymers or copolymers having a number average molecular weight of from 500 to 5 000 000 by polymerization of isobutene or an isobutene-comprising monomer mixture in the presence of a Lewis acid or a complex comprising a Lewis acid as polymerization catalyst, wherein the polymerization is carried out in the presence of at least one hemiacetal or full acetal which can be obtained by protic acid-catalyzed reaction of at least one C 1 -C 12 -hydrocarbyl alcohol with at least one aldehyde or ketone having from 1 to 12 carbon atoms.

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02-05-2013 дата публикации

Propylene random copolymer, method for its preparation, and compositions and articles containing the same

Номер: US20130108814A1

The present invention relates to a propylene-butene-1 random copolymer which has a butene-1 content of 1-6 mol % and a relative dispersity of butene-1, as determined according to NMR method, of greater than 98.5%. The propylene-butene-1 random copolymer of the present invention has a high relative dispersity of butene-1, as well as better transparency and heat resistance, so that it is more suitable for packaging food that may be edible after heating. Moreover, the copolymer has a lower xylene solubles content at room temperature. In addition, the present invention further relates to a method for preparing the copolymer and to a composition and an article comprising the copolymer.

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09-05-2013 дата публикации

Catalyst component

Номер: US20130116393A1
Принадлежит: Borealis AG

The invention refers to a process for preparing a Group 2 metal/transition metal olefin polymerisation catalyst component in particulate form free of conventional phthalate electron donors and the use thereof in a process for polymerising olefins.

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16-05-2013 дата публикации

Pump for loop reactor

Номер: US20130123442A1
Принадлежит: Total Research and Technology Feluy SA

The present invention relates the use of a pump in a loop reactor for the production of polyethylene, as well as a reactor comprising such pump and methods for producing polyolefin by means of such reactor. The pump according to the invention is characterized in that it is an axial flow impeller circulation pump, wherein the impeller comprises 6 blades and wherein the pump is fixed on a spring supported frame. Use of the pump according to the present invention allows for preparation of homogeneous polyethylene products that meet high quality standards from the complicated ethylene polymerization mixtures while at the same time being produced with low energy consumption.

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23-05-2013 дата публикации

FUNCTIONALIZED HYDROPHILIC AND LUBRICIOUS POLYMERIC MATRIX AND METHODS OF USING SAME

Номер: US20130129953A1
Автор: Lee William
Принадлежит: AST Products, Inc.

Compositions are provided herein comprising a base polymer having engrafted with a secondary polymeric matrix having hydrophilic and lubricious copolymer brushes. Each copolymer brush further comprises functional groups immobilized along the surface of the brush in a plurality of layers, the functional groups conferring hydrophilic and lubricious properties to the base polymer. These polymer compositions are useful for e.g., fabricating devices for delivery of intraocular lenses (IOLs) as well as improving the hydrophilic properties of contact lenses. 1. A medical device comprising: a base polymer having one or more engrafted surfaces , the engrafted surfaces comprising an engrafted hydrophilic and lubricious copolymer matrix.2. The medical device of claim 1 , wherein the base polymer has a substantially tubular geometry defining a lumen claim 1 , where the luminal surface comprises an engrafted hydrophilic and lubricious copolymer matrix.3. The medical device of claim 1 , wherein the base polymer has a substantially concave surface and a substantially convex surface claim 1 , and the substantially concave surface and substantially convex surface tube both include an engrafted hydrophilic and lubricious copolymer matrix.6. The method of claim 5 , wherein the base polymer is a hydrophobic bulk matrix selected from the group consisting of polypropylene claim 5 , polycarbonate claim 5 , polyethylene claim 5 , acrylbutadienestyrene claim 5 , polyamide claim 5 , polychlorotrifluoroethylene claim 5 , polytetrafluoroethylene claim 5 , polyvinyl chloride claim 5 , polyvinyldene fluoride claim 5 , polyvinylchloride claim 5 , polydimethylsiloxane claim 5 , polyethylene terephthalate claim 5 , ethylene tetrafluoroethylene claim 5 , ethylene chlortrifluoroethylene claim 5 , perfluoroalkoxy claim 5 , styrene claim 5 , polymethylpentene claim 5 , polymethylmetyacrylate claim 5 , polystyrene claim 5 , polyetheretherketone claim 5 , tetrafluoroethylene claim 5 , polyurethane claim ...

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23-05-2013 дата публикации

Graft polymer to which combined nitrogen molecules are grafted

Номер: US20130131279A1

The present invention relates to a modified polymer obtained by grafting of a compound comprising at least one group Q and at least one group A, bonded together by at least, and preferably, one “spacer” group Sp in which: Q comprises a dipole containing at least, and preferably, one nitrogen atom, capable of being grafted onto the polymer chain by [1,3]-dipolar cycloaddition, A comprises an associative group comprising at least one nitrogen atom, Sp is an atom or a group of atoms forming a bond between Q and A.

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30-05-2013 дата публикации

Modification of propylene polymers

Номер: US20130137834A1
Принадлежит: POLYMERS CRC LTD

The invention relates to a process for increasing the melt flow index of a propylene polymer, the process comprising melt mixing the propylene polymer in the presence of aqueous hydrogen peroxide.

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30-05-2013 дата публикации

SELF-ASSEMBLED MULTI-NUCLEAR CATALYST FOR OLEFIN POLYMERIZATION

Номер: US20130137841A1
Автор: Luo He Kuan
Принадлежит:

A self-assembled olefin polymerization catalyst comprising a transition metal complex according to formula (I) A-[(L(MX)(MX-L(MX)MX—B)-MX)-(L(MX)(MX-L(MX)-MX-A′)MX)w]-B (I) wherein each M is independently a transition metal selected from the group consisting of Group 3-11 of the periodic table; each X is independently selected from the group consisting of H, halogen, CN, optionally substituted N(R), OH, optionally substituted C-Calkyl, optionally substituted C-Calkoxy, wherein Ris independently selected from the group consisting of optionally substituted C-Calkyl, optionally substituted C-Caryl and halogen; A is nothing, L(MX)MX—, or MXL(MX)MX—; A′ is nothing, -L(MX)MX, or -L(MX); B is nothing, -L(MX)h or -L(MX)MX; g is 0 or an integer of at least 1; h is 0 or an integer of at least 1; p is 0 or an integer of at least 1; q is 0 or an integer of at least 1; r is 0 or an integer of at least 1; t is 0 or an integer of at least 1; u is 0 or an integer of at least 1; v is 0 or an integer of at least 1; w is an integer of at least 1; y is an integer of at least 1; z is an integer of at least 1; n is an integer selected from 0-6, wherein n is selected depending on the valency of M such that the net charge of each M nucleus is zero or all ligand binding positions of M are occupied; Land Lare independently selected ligands, wherein Land Lare different, each of Land Lhaving at least two linked coordination units, wherein each coordination unit binds to a different transition metal atom. 140-. (canceled)42. The self-assembled olefin polymerization catalyst according to claim 41 , wherein the optionally substituted hydrocarbon claim 41 , hetero-hydrocarbon or Si-containing backbone to which the metal-coordinating moieties W and Y are bonded is selected from the group consisting of an optionally substituted C-Caryl group claim 41 , an optionally substituted C-Cheteroaryl group and an optionally substituted Si group.44. The self-assembled olefin polymerization catalyst according ...

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30-05-2013 дата публикации

Polypropylene grids manufactured with a beta nucleation additive, the method of manufacture and uses thereof

Номер: US20130137843A1
Принадлежит: Individual

Integral polymer grids, such as geogrids, are made by stretching and orienting a polypropylene starting sheet material having a defined pattern of holes or depressions in which the polypropylene is at least 50%, and preferably up to about 80%, beta crystals caused by adding a beta nucleating agent to the polypropylene, preferably in concentrations between about 10 ppm to about 100 ppm. Such beta nucleated polypropylene grids exhibit increased yield and break tensile strengths, increased 2% and 5% tensile strengths, increased modulus characteristics, increased torsional stiffness, increased impact strength, and increased grid junction strength. Methods for manufacturing the beta nucleated polypropylene mesh grids are disclosed, along with applications for stabilizing particulate material in civil engineering structures, and the like.

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13-06-2013 дата публикации

ETHYLENE-BASED POLYMER COMPOSITIONS

Номер: US20130150537A1
Принадлежит: Dow Global Technologies LLC

The present invention provides an ethylene-based polymer composition characterized by a Comonomer Distribution Constant in the range of from greater than 45 to less than 400, wherein the composition has less than 120 total unsaturation unit/1,000,000C, and method of producing the same. 1(A) polymerizing ethylene and optionally one or more α-olefins in the presence of a first catalyst to form a semi-crystalline ethylene-based polymer in a first reactor or a first part of a multi-part reactor; and(B) reacting freshly supplied ethylene and optionally one or more α-olefins in the presence of a second catalyst comprising an organometallic catalyst thereby forming an ethylene-based polymer composition in at least one other reactor or a later part of said multi-part reactor, wherein the catalyst of (A) and (B) can be the same or different and each is a metal complex of a polyvalent aryloxyether corresponding to the formula:. A polymerization process comprising:{'sup': '3', 'where Mis Ti, Hf or Zr, preferably Zr;'}{'sup': '4', 'sub': '9-20', 'Aris independently in each occurrence a substituted Caryl group, wherein the substituents, independently in each occurrence, are selected from the group consisting of alkyl; cycloalkyl; and aryl groups; and halo-, trihydrocarbylsilyl- and halohydrocarbyl-substituted derivatives thereof, with the proviso that at least one substituent lacks co-planarity with the aryl group to which it is attached;'}{'sup': '4', 'sub': '2-20', 'Tis independently in each occurrence a Calkylene, cycloalkylene or cycloalkenylene group, or an inertly substituted derivative thereof;'}{'sup': '21', 'Ris independently in each occurrence hydrogen, halo, hydrocarbyl, trihydrocarbylsilyl, trihydrocarbylsilylhydrocarbyl, alkoxy or di(hydrocarbyl)amino group of up to 50 atoms not counting hydrogen;'}{'sup': 3', '3', '3', '21, 'Ris independently in each occurrence hydrogen, halo, hydrocarbyl, trihydrocarbylsilyl, trihydrocarbylsilylhydrocarbyl, alkoxy or amino of up ...

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20-06-2013 дата публикации

IN SITU FORMATION OF HYDROXY CHAIN END FUNCTIONAL POLYOLEFINS

Номер: US20130158206A1
Принадлежит: THE UNIVERSITY OF SOUTHERN MISSISSIPPI

Provided herein are methods for preparing a telechelic polymer of formula I 2. The compound of claim 1 , wherein Ris in the 3-position of the pyrrole ring.3. The compound of claim 1 , wherein Ris in the 2-position of the pyrrole ring.4. The compound of claim 1 , wherein Ris a divalent polyisobutylene group.5. The compound of claim 1 , wherein Rand Rare hydrogen.6. The compound of claim 1 , wherein m is 2 or 3.10. The compound of claim 1 , wherein p is 1 or 2.12. The compound of claim 11 , wherein Ris in the 3-position of the pyrrole ring.13. The compound of claim 11 , wherein Ris in the 2-position of the pyrrole ring.14. The compound of claim 11 , wherein Ris a divalent polyisobutylene group.15. The compound of claim 11 , wherein Rand Rare hydrogen.16. The compound of claim 11 , wherein m is 2 or 3.20. The compound of claim 11 , wherein Ris tert-butyl.21. The method of claim 11 , where p is 1 or 2. This application is a divisional application of U.S. patent application Ser. No. 12/534,081, filed Jul. 31, 2009, the disclosure of which is incorporated herein by reference int its entirety.Provided herein are methods for the preparation of hydroxy-terminated polyolefins via in situ functionalization of quasiliving polyolefins.Hydroxy-terminated polymers, that is, polymers containing hydroxy end groups, are useful intermediates in the preparation of high-performance polymer products. Such intermediates can be useful, for example, in the production of fuel or lube oil additives, thermoplastic elastomers such as polyurethanes, poly(urethane-urea)s, or polyamides, network polymers, star branched polymers, and block copolymers. Thus, there is a need for hydroxyl-terminated polymers, as well as convenient methods of producing the same.Prior methods for synthesizing hydroxy-terminated polyisobutylene have involved post-polymerization modification of telechelic polyisobutylene, for example, by hydroboration oxidation of olefin-terminated polyisobutylene. Described herein are ...

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20-06-2013 дата публикации

MODIFIED ZIEGLER-NATTA CATALYST SYSTEMS

Номер: US20130158215A1
Принадлежит:

This invention relates to modified Ziegler-Natta catalyst systems that have an excellent activity in homo- or co-polymerisation of ethylene and alpha-olefins and are able to produce polymers having reduced molecular weight distribution and improved incorporation of hexene with respect to conventional Ziegler-Natta catalyst systems. 1. A method for modifying a Ziegler-Natta catalyst by introducing on the surface of a precatalyst composed of a magnesium dichloride , or on the surface of a conventional Ziegler-Natta catalyst , composed of magnesium dichloride , titanium tetrachloride and optionally an internal Lewis base , either a solution containing a chloride MCln wherein M is selected from Groups 3 , 4 , 5 or 6 of the Periodic Table and n is the valency of M and wherein the solution containing MCln is hot TiCl4 , or a solid chloride MCln followed by addition of TiCl4 , or a titanium halide wherein the halogen is not chlorine , characterised in that said modification results in changing the Ti active site electronic environment.2. The method of wherein MCln is at least partially soluble in hot TiCl4.3. The method of wherein M is selected from Ta claim 1 , Nb claim 1 , Zr claim 1 , Y or Nd claim 1 , preferably Ta or Nb claim 1 , more preferably Ta.4. The method of wherein the precatalyst support is MgCl.5. The method of wherein the molar ratio MCl/MgClranges between 0.015 and 0.2 claim 1 , preferably between 0.02 and 0.1.6. The method of wherein the non-chlorine halogen is Br or I claim 1 , preferably Br.7. The method of wherein the molar ratio TiX/MgClranges between 0.015 and 0.2 claim 6 , preferably between 0.02 and 0.1.8. The method of wherein the modifying reaction is carried out at a temperature ranging between room temperature and 130° C. claim 1 , preferably from 70° C. to 120° C. claim 1 , for a period of time of from 1 to 3 hours.9. The method of wherein the temperature of the impregnation temperature is increased in order to increase the activity of the ...

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25-07-2013 дата публикации

POLYETHYLENE EXTRUDED ARTICLES

Номер: US20130190466A1
Принадлежит: BASELL POLYOFINE GmbH

Extruded articles, particularly films, comprising an ethylene polymer obtained by a polymerization process carried out in the presence the products obtained by contacting the following components: (a) a solid catalyst component comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and optionally one or more internal electron donor compounds, (b) an aluminum hydrocarbyl compound, (c) optionally an external electron donor compound, and (d) a polyalcohol partially esterified with carboxylic acids with alkyl groups having at least 10 carbon atoms. 3. The extruded article according to claim 1 , wherein the polyalcohol is selected among the compounds obtained by the partial esterification of glycerin with saturated fatty acids having at least ten carbon atoms4. The extruded article according to claim 1 , wherein the polyalcohol is selected among the monoesters of glycerin.5. The extruded article according to claim 1 , wherein the polyalcohol is glycerol monostearate.6. The extruded article according to claim 1 , wherein the polyethylene is a linear low density polyethylene.7. The extruded article according to claim 1 , being a film.8. A polymerization process for preparing a polyethylene for use in extruded articles production claim 1 , such polymerization process being preferably carried out in one or more polymerization reactors at least one of which operates in gas phase claim 1 , wherein the improvement comprises the use of a polyalcohol partially esterified with alkyl groups having at least 10 carbon atoms.9. The polymerization process according to claim 8 , for preparing a linear low density polyethylene for use in the production of films.10. Use of a polyalcohol partially esterified with alkyl groups having at least 10 carbon atoms in a polymerization process for preparing a polyethylene.11. The use according to claim 10 , wherein such process is carried out in one or more polymerization reactors claim 10 , of which at least one ...

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01-08-2013 дата публикации

METHOD FOR SECONDARY MOLDING OF POLYMER NANO ORIENTED CRYSTAL MATERIAL

Номер: US20130196168A1
Принадлежит:

A method for secondary-molding a polymer nano oriented crystal material in accordance with an embodiment of the present invention includes the steps of: heating the polymer nano oriented crystal material so that the polymer nano oriented crystal material changes into a mobile phase or a melt having a dense entanglement network structure; molding the polymer nano oriented crystal material which changed into the mobile phase or the melt including the dense entanglement network in the step; and cooling the polymer nano oriented crystal material, which has undergone the step, until the polymer nano oriented crystal material changes into an ordered phase. 1. A method for secondary-molding a polymer nano oriented crystal material , comprising the steps of:(1) heating the polymer nano oriented crystal material so that the polymer nano oriented crystal material changes into (a) a mobile phase or (b) a melt having a dense entanglement network structure;(2) molding the polymer nano oriented crystal material which changed into (a) the mobile phase or (b) the melt having the dense entanglement network structure in the step (1); and(3) cooling the polymer nano oriented crystal material, which has undergone the step (2), until the polymer nano oriented crystal material changes into an ordered phase.2. The method according to claim 1 , wherein the polymer nano oriented crystal material comprises polymer nano oriented crystals having a crystal size d of not more than 300 nm and an orientation function fc of not less than 0.7 claim 1 , the orientation function fc representing a degree of orientation of polymer chains in crystals.3. The method according to claim 1 , wherein:the polymer nano oriented crystal material comprises a cylindrical high order structure; andthe cylindrical high order structure comprises a bundle of strings each of which is constituted by nano oriented crystal particles connected together.4. The method according to claim 1 , wherein the polymer nano oriented ...

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01-08-2013 дата публикации

Polymerization Process to Make Low Density Polyethylene

Номер: US20130197168A1
Принадлежит:

A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising a chain transfer agent system (CTA system) and ethylene into a first autoclave reactor zone operating at polymerization conditions to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; and B. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone and operating at polymerization conditions, and, optionally, (2) freshly injecting, a second feed into the second reactor zone to produce a second zone reaction product, with the proviso that at least one of the first reactor zone product and the freshly injected feed comprises a CTA system with a transfer activity of Z2; and with the proviso that the ratio of Z1:Z2 is greater than 1. 1. A high pressure polymerization process to form an ethylene-based polymer , the process comprising the steps of:A. Injecting a first feed comprising a chain transfer agent system (CTA system) and ethylene into a first autoclave reactor zone operating at polymerization conditions to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; andB. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone and operating at polymerization conditions, and, optionally, (2) freshly injecting, a second feed into the second reactor zone to produce a second zone reaction product, with the proviso that at least one of the first reactor zone product and the freshly injected feed comprises a CTA system with a transfer activity of Z2; andwith the proviso that the ratio of Z1:Z2 is greater than 1.2. The process of claim 1 , further comprising one or more steps of transferring a zone reaction product ...

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01-08-2013 дата публикации

Enhanced Catalyst Performance for Production of Vinyl Terminated Propylene and Ethylene/Propylene Macromers

Номер: US20130197180A1
Принадлежит: ExxonMobil Chemical Patents Inc.

This invention relates to a transition metal catalyst compound represented by the structure: 132.-. (canceled)33. A polymer of propylene having an Mn of more than 30 ,000 g/mol and at least 30% allyl chain ends (relative to total unsaturation).34. The polymer of claim 33 , where the polymer has an isobutyl chain end to allylic vinyl group ratio of 0.8:1 to 1.3:1.0 claim 33 , optionally less than 1400 ppm aluminum.35. The polymer of claim 33 , wherein the polymer has at least 50% allyl chain ends (relative to total unsaturation).36. The polymer of claim 33 , wherein the polymer has at least 70% allyl chain ends (relative to total unsaturation).37. The polymer of claim 33 , wherein the polymer has at least 90% allyl chain ends (relative to total unsaturation).38. The polymer of claim 33 , wherein the polymer has at least 95% allyl chain ends (relative to total unsaturation).39. The polymer of claim 33 , wherein the polymer has an Mn of more than 30 claim 33 ,000 g/mol up to 100 claim 33 ,000 g/mol.40. The polymer of claim 33 , wherein the polymer has an Mn of more than 30 claim 33 ,000 g/mol up to 60 claim 33 ,000 g/mol.41. The polymer of claim 33 , wherein the polymer has an Mn of more than 30 claim 33 ,000 g/mol up to 40 claim 33 ,000 g/mol.42. The polymer of claim 33 , wherein the polymer has an Mn of more than 30 claim 33 ,000 g/mol up to 60 claim 33 ,000 g/mol and comprises 90 to 40 mol % propylene and 10 to 60 mol % of ethylene claim 33 , wherein the copolymer has at least X % allyl chain ends (relative to total unsaturations) claim 33 , where: 1) X=(−0.94 (mol % ethylene incorporated)+100).43. The polymer of claim 33 , wherein the polymer has an Mn of more than 30 claim 33 ,000 g/mol up to 60 claim 33 ,000 g/mol and comprises less than 40 and greater than 30 mol % propylene and greater than 60 and less than 70 mol % of ethylene claim 33 , wherein the copolymer has at least 45% allyl chain ends (relative to total unsaturations).44. The polymer of claim 33 , ...

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08-08-2013 дата публикации

Process for the activation of a supported chromium oxide based catalyst

Номер: US20130203947A1
Принадлежит: Ineos Commercial Services UK Ltd

The present invention relates to a process for the activation of a supported chromium oxide based catalyst.

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08-08-2013 дата публикации

PROCESS FOR THE PREPARATION OF HIGH PURITY PROPYLENE POLYMERS

Номер: US20130203948A1
Принадлежит: BASELL POLIOLEFINE ITALIA S.R.L.

A process for the preparation of high purity propylene polymers carried out in the presence of a catalyst comprising the product obtained by reacting:—an organo-aluminium compound, with—a solid catalyst component comprising Mg, Ti and electron donor compound selected from specific diolesters, said process being carried out employing an organo-aluminum/propylene ratio equal to or lower than 1.75 mmole/kg. 2. The process according to in which the process is carried out at organo-aluminum/propylene ratio lower than 0.9 mmol/kg.3. The process according to in which in the donor of formula (A) R1 and R4 are independently selected from C1-C15 alkyl groups claim 1 , C6-C14 aryl groups claim 1 , C3-C15 cycloalkyl groups claim 1 , and C7-C15 arylalkyl or alkylaryl groups.4. The process according to in which R1 and R4 are selected from C1-C10 alkyl groups.5. The process according to in which R1 and R4 are both methyl.6. The process according to in which R2-R3 groups independently are selected from hydrogen or C1-C10 alkyl groups.7. The process according to in which both R2 and R3 groups claim 1 , are hydrogen.8. The process according to in which R groups are selected from C1-C15 alkyl groups claim 1 , C6-C14 aryl groups claim 1 , C3-C15 cycloalkyl groups claim 1 , and C7-C15 arylalkyl or alkylaryl groups.9. The process according to in which R groups are selected from C1-C5 alkyl groups.10. The process according to in which the index n ranges from 1 to 3.11. The process according to in which n is 1 and the substituent R is in position 4 of the benzoate ring.12. The process according to in which the organo-aluminum compound is an alkyl-Al compound.13. The process according to in which the alkyl-Al compound is a trialkyl-aluminum selected from triethylaluminum claim 1 , triisobutylaluminum claim 1 , tri-n-butylaluminum claim 1 , tri-n-hexylaluminum claim 1 , tri-n-octylaluminum and mixture thereof.14. The process according to in which the external electron donor is selected from ...

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15-08-2013 дата публикации

RESIN COMPOSITE MATERIAL AND METHOD FOR PRODUCING RESIN COMPOSITE MATERIAL

Номер: US20130210955A1
Принадлежит:

Provided is a resin composite material in which a carbon material with a graphene structure is dispersed in a synthetic resin and which has a high mechanical strength and a low linear expansion coefficient and a method for producing the resin composite material. A resin composite material contains a synthetic resin and a carbon material with a graphene structure dispersed in the synthetic resin, wherein the synthetic resin is grafted onto the carbon material and the grafting ratio thereof onto the carbon material is 5% to 3300% by weight. A method for producing a resin composite material includes the steps of: preparing a resin composite containing a synthetic resin and a carbon material with a graphene structure dispersed in the synthetic resin; and grafting the synthetic resin onto the carbon material concurrently with or after the step of preparing the resin composite. 1. A resin composite material containing a synthetic resin and a carbon material with a graphene structure , the carbon material being dispersed in the synthetic resin , wherein the synthetic resin is grafted onto the carbon material and the grafting ratio thereof onto the carbon material is 5% to 3300% by weight.2. The resin composite material according to claim 1 , further containing a resin of a different type from the synthetic resin.3. The resin composite material according to or claim 1 , wherein the carbon material with a graphene structure is flaked-graphite or carbon nanotubes.4. The resin composite material according to or claim 1 , wherein the synthetic resin is a thermoplastic resin.5. The resin composite material according to claim 4 , wherein the thermoplastic resin is a polyolefin.6. The resin composite material according to claim 4 , wherein the thermoplastic resin is an amorphous resin.7. A method for producing a resin composite material claim 4 , the method comprising the steps of:preparing a resin composite containing a synthetic resin and a carbon material with a graphene ...

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15-08-2013 дата публикации

Modified catalyst supports

Номер: US20130211018A1
Принадлежит: Total Research and Technology Feluy SA

The invention covers a supported catalyst system prepared according to a process comprising the following step: i). impregnating a silica-containing catalyst support having a specific surface area of from 150 m 2 /g to 800 m 2 /g, preferably 280 m 2 /g to 600 m 2 /g, with one or more titanium compounds of the general formula selected from R n Ti(OR′) m and (RO) n Ti(OR′) m , wherein R and R′ are the same or different and are selected from hydrocarbyl groups containing from 1 to 12 carbon and halogens, and wherein n is 0 to 4, m is 0 to 4 and m+n equals 4, to form a titanated silica-containing catalyst support having a Ti content of at least 0.1 wt % based on the weight of the Ti-impregnated catalyst support wherein the supported catalyst system further comprises an alumoxane and a metallocene.

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15-08-2013 дата публикации

Method for preparing polypropylene using transition metal compound containing thiophene-fused cyclopentadienyl ligand

Номер: US20130211021A1
Принадлежит: Lotte Chemical Corp

The present invention relates to a preparation method for polypropylene that comprises polymerizing a propylene monomer in the presence of a catalyst comprising a novel transition metal compound. Using the novel transition metal compound as a catalyst, the preparation method for polypropylene according to the present invention can not only acquire high catalytic activity for polymerization to achieve high efficiency of the process but allow it to easily control the fine-structure characteristics of the polymer, thereby providing polypropylene having desired properties with ease.

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15-08-2013 дата публикации

SUPPORTED CATALYST FOR OLEFIN POLYMERIZATION AND PREPARATION METHOD FOR POLYOLEFIN USING THE SAME

Номер: US20130211023A1
Автор: Lee Bun-Yeoul
Принадлежит: LOTTE CHEMICAL CORPORATION

The present invention relates to a supported catalyst for olefin polymerization to which a novel transition metal compound and a co-catalyst compound are bound, and a preparation method for polyolefin using the supported catalyst. The transition metal compound bound to the catalyst of the present invention provides high activity for olefin-based monomers in heterogeneous reaction as well as in homogeneous system. Particularly, a polyolefin with higher molecular weight can be prepared by using the supported catalyst containing the transition metal compound bound to a support, rather than using the novel transition metal compound in a non-supported status, or the conventional transition metal compound in a supported or non-supported status. 2. The supported catalyst for olefin polymerization as claimed in claim 1 , wherein M is titanium (Ti) claim 1 , zirconium (Zr) claim 1 , or hafnium (Hf);{'sup': 1', '2, 'Qand Qare independently methyl or chlorine;'}{'sup': 1', '2', '3', '4', '5, 'R, R, R, R, and Rare independently hydrogen or methyl; and'}{'sup': 6', '7', '8', '9', '10', '11', '12', '13, 'R, R, R, R, R, R, R, and Rare independently hydrogen.'}3. The supported catalyst for olefin polymerization as claimed in claim 2 , wherein at least one of Rand Ris methyl; and Ris methyl.4. The supported catalyst for olefin polymerization as claimed in claim 1 , wherein the co-catalyst compound is at least one selected from the group consisting of compounds represented by the following formula 6 claim 1 , 7 claim 1 , or 8:{'br': None, 'sup': '61', 'sub': 'a', '—[Al(R)—O]—\u2003\u2003[Formula 6]'}{'sup': '61', 'sub': 1', '20', '1', '20, 'wherein Ris independently a halogen radical, a C-Chydrocarbyl radical, or a halogen-substituted C-Chydrocarbyl radical; and'} {'br': None, 'sup': '71', 'sub': '3', 'D(R)\u2003\u2003[Formula 7]'}, 'a is an integer of 2 or above,'}{'sup': '71', 'sub': 1', '20', '1', '20, 'claim-text': {'br': None, 'sup': +', '−', '+', '−, 'sub': 4', '4, '[L-H][Z(A)] ...

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22-08-2013 дата публикации

Melt blown media for air filtration

Номер: US20130212993A1
Принадлежит: Borealis AG

Melt-blown fiber (MBF) comprising a propylene copolymer (PP), wherein the melt-blown fiber (MBF) and/or the propylene copolymer (PP) has/have (a) a melt flow rate MFR 2 (230° C.) measured according to ISO 1133 of at least 300 g/10 min, (b) a comonomer content of 1.5 to 6.0 wt.-%, the comonomers are ethylene and/or at least one C 4 to C 12 α-olefin, (c) <2,1> regiodefects of more than 0.4 mol.-% determined by 13 C-NMR spectroscopy.

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22-08-2013 дата публикации

Oligomeric light stabilizers with a specific functionalization

Номер: US20130216752A1
Принадлежит: BASF SE

A compound of the formula (I) wherein m and n are independently of one another a number from 1 to 50; the ratio of m/n is 1:10 to 10:1, the recurring units X can have the same definition or different definitions, the recurring units Y can have the same definition or different definitions and the recurring units X and Y can have a random, alternating or block distribution; the recurring unit X is a group of the formula (I-a) and the recurring unit Y is a group of the formula (I-b) the radicals R 1 independently of one another are C 1 -C 12 alkyl or C 3 -C 12 cycloalkyl; the radicals R 2 and R 4 are independently of one another C 12 -C 30 alkyl; the radicals R3 are independently of one another hydrogen, C 1 -C 12 alkyl or C 3 -C 12 cycloalkyl.

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22-08-2013 дата публикации

Process for olefin polymerisation using group 4 metallocene as catalysts

Номер: US20130217845A1
Принадлежит: Borealis AG

A process for the preparation of a random propylene copolymer comprising polymerising propylene and at least one C2-10 alpha olefin (especially ethylene) in the presence of a catalyst; wherein said catalyst comprises: (i) a complex of formula (I): wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′ 2 C—, —R′ 2 C—CR′ 2 —, —R′ 2 Si—, —R′ 2 Si—SiR 2 —, —R′ 2 Ge—, wherein each R′ is independently a hydrogen atom, C1-C20-hydrocarbyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; each R 1 is a C4-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring, optionally containing one or more heteroatoms belonging to groups 14-16, or is a C3-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring where the β-atom is an Si-atom; n is 0-3; each R 18 is the same or different and may be a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; each R 4 is a hydrogen atom or a C1-6-hydrocarbyl radical; each W is a 5 or 6 membered aryl or heteroaryl ring wherein each atom of said ring is optionally substituted with an R 5 group; each R 5 is the same or different and is a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; and optionally two adjacent R 5 groups taken together can form a further mono or multicyclic ring condensed to W optionally substituted by one or two groups R 5 ; and (ii) a cocatalyst comprising an organometallic compound of a Group 13 metal.

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29-08-2013 дата публикации

Cyclopenta[b]Fluorenyl Transition Metal Compound, Catalyst Composition Containing the Same, and Method of Preparing Ethylene Homopolymer or Copolymer of Ethylene and alpha-Olefin Using the Same

Номер: US20130225834A1

The present invention relates to a new transition metal compound based on cyclopenta[b]fluorenyl group, a transition metal catalyst composition containing the same and having high catalytic activity for preparing an ethylene homopolymer or a copolymer of ethylene and one α-olefin, a method of preparing an ethylene homopolymer or a copolymer of ethylene and α-olefin using the same, and the prepared ethylene homopolymer or the copolymer of ethylene and α-olefin.

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19-09-2013 дата публикации

Preparation of a solid catalyst system

Номер: US20130245212A1
Принадлежит: Borealis AG

Process for the preparation of a solid catalyst system comprising the steps of generating an emulsion by dispersing a liquid clathrate in a solution wherein (i) the solution constitutes the continuous phase of the emulsion and (ii) the liquid clathrate constitutes in form of droplets the dispersed phase of the emulsion, solidifying said dispersed phase to convert said droplets to solid particles and optionally recovering said particles to obtain said catalyst system, wherein the liquid clathrate comprises a lattice being the reaction product of aluminoxane, an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, and a further compound being effective to form with the aluminoxane and the organometallic compound the lattice, and a guest being an hydrocarbon compound, and the solution comprises a silicon fluid and a hydrocarbon solvent.

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26-09-2013 дата публикации

Process and apparatus for the polymerisation of olefins

Номер: US20130253148A1
Принадлежит: Ineos Commercial Services UK Ltd

The present invention relates to a process for the gas-phase polymerisation of olefins in a fluidised bed reactor, which process comprises: a) passing a fluidising gas comprising one or more olefin monomers through a fluidised bed of polymer particles in the presence of a polymerisation catalyst, b) withdrawing a first gaseous stream comprising solid particles from the top of the reactor, c) passing the first gaseous stream to a gas/solids separator, separating solid particles therefrom, and forming a second gaseous stream comprising residual solid particles, d) passing at least a portion of the second gaseous stream to one or more heat exchangers to remove the heat of reaction, and e) recycling at least a portion of the cooled stream from step (d) as the fluidising gas in step (a), characterised in that the rate of fouling of the one or more heat exchangers is such that i) the increase in pressure drop across the heat exchangers is equivalent to less than 5% per year, and/or ii) the decrease in heat transfer of the heat exchangers is equivalent to less than 5% per year.

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03-10-2013 дата публикации

Polymerization process and raman analysis for olefin-based polymers

Номер: US20130261224A1
Принадлежит: Dow Global Technologies LLC

The invention provides a process for monitoring and/or adjusting a dispersion polymerization of an olefin-based polymer, the process comprising monitoring the concentration of the carbon-carbon unsaturations in the dispersion using Raman Spectroscopy. The invention also provides a process for polymerizing an olefin-based polymer, the process comprising polymerizing one or more monomer types, in the presence of at least one catalyst and at least one solvent, to form the polymer as a dispersed phase in the solvent; and monitoring the concentration of the carbon-carbon unsaturations in the dispersion using Raman Spectroscopy.

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10-10-2013 дата публикации

Polymers, Polymer Blends, and Articles Made Therefrom

Номер: US20130266786A1
Принадлежит: ExxonMobil Chemical Patents Inc

Polymer compositions including an ethylene-based polymer having a melt index of from about 0.1 g/10 min to about 5.0 g/10 min; a melt index ratio of from about 15 to about 30; a weight average molecular weight (Mw) of from about 20,000 to about 200,000; a molecular weight distribution (Mw/Mn) of from about 2.0 to about 4.5; and a density of from 0.900 to 0.920 g/cm 3 . Films having a thickness of 1 mil show a difference between the maximum seal strength and the minimum seal strength over the ranges of temperatures between 95.0° C. and 140.0° C. of ≦1.00×10 2 grams/cm.

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10-10-2013 дата публикации

Porous Oxide Microparticles and Composites Thereof and Methods of Making and Using Same

Номер: US20130267408A1
Принадлежит: University of Maryland, College Park

Provided are substantially spherical, porous oxide microparticles having a plurality of substantially spherical voids, substantially spherical, porous oxide-organic polymer composite microparticles having a plurality of substantially spherical organic polymer domains. The microparticles can be made using a microdispersive suspension polymerization step to make microparticles having an organic polymer shell and a plurality of discrete substantially spherical organic nanoparticles. The microparticles can be used as polymerization catalyst supports. 1) A substantially spherical , porous oxide microparticle having a longest linear dimension of 5 to 350 microns , the microparticle comprising a plurality of discrete substantially spherical voids having a longest linear dimension of 30 nanometers to 300 nanometers and a surface area of 200 to 600 m/g ,wherein the oxide of the microparticle is selected from silicon oxide, titanium oxide, zirconium oxide, and combinations thereof and the oxide is porous.2) The substantially spherical claim 1 , porous oxide microparticle of claim 1 , comprising:a catalyst covalently bonded to at least a portion of a surface of the microparticle, and, optionally, a co-catalyst covalently bonded to at least a portion of a surface of the microparticle.3) The substantially spherical claim 2 , porous oxide microparticle of claim 2 , wherein the catalyst is an olefin polymerization catalyst.4) The substantially spherical claim 3 , porous oxide microparticle of claim 3 , wherein the olefin polymerization catalyst is a metallocene catalyst and the co-catalyst is an aluminum alkyl compound.5) A substantially spherical claim 3 , porous oxide-organic polymer composite microparticle having a longest linear dimension of 1 micron to 2 millimeters claim 3 , the microparticle having a polymer shell claim 3 , and a plurality of discrete substantially spherical organic polymer domains having a longest linear dimension of 30 nanometers to 300 nanometers that ...

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17-10-2013 дата публикации

PROCESS FOR MONITORING THE POLYMERIZATION OF ETHYLENE OR ETHYLENE AND COMONOMERS IN A TUBULAR-REACTOR AT HIGH-PRESSURES

Номер: US20130274424A1
Принадлежит: BASELL POLYOLEFINE GMBH

Process for monitoring the polymerization of ethylene or ethylene and comonomers in the presence of free-radical polymerization initiator at pressures in the range of from 160 MPa to 350 MPa and temperatures in the range of from 100° C. to 350° C. in a tubular reactor with one or more reaction zones, which is equipped with cooling jackets for cooling the tubular reactor with a cooling medium, comprising the steps of a) measuring as process parameters the temperature profile and the pressure of the reaction medium and the flow and temperature profile of the cooling medium along the reactor, b) monitoring the feeds of ethylene, if present comonomer, free-radical polymerization initiator and chain-transfer agent to all reaction zones, c) calculating, based on the measured process parameters and on a model for the polymerization process, concentrations for free-radical polymerization initiator, chain-transfer agent, ethylene and, if present, comonomers at at least so many positions along the reactor, that at least one calculation is carried out all 10 s for a volume unit flowing through the reactor, d) calculating, based on the measured process parameters and the calculated concentrations, the cooling power, the generation of heat, and the concentration of radicals, e) calculating, based on the calculated data of the cooling power, of the generation of heat, and of the concentration of radicals, the potential of a thermal runaway of the reaction mixture at the positions along the reactor which have the highest temperatures, and f) outputting an alarm signal if the calculated value for the potential of a thermal runaway exceeds a predefined value and process for polymerizing ethylene or ethylene and comonomers comprising such a monitoring process. 1. A process for monitoring the polymerization of ethylene or ethylene and comonomers in the presence of free-radical polymerization initiator at pressures in the range of from 160 MPa to 350 MPa and temperatures in the range ...

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17-10-2013 дата публикации

Process for controlling the relative activity of active centers of catalyst systems comprising at least one late transition metal catalyst component and at least one ziegler catalyst component

Номер: US20130274427A1
Принадлежит: BASELL POLYOLEFINE GMBH

A method of controlling the polymer composition of an ethylene copolymer in a process for preparing ethylene copolymers by copolymerizing ethylene and at least one other olefin in the presence of a polymerization catalyst system comprising at least one late transition metal catalyst component (A) having a tridentate ligand which bears at least two ortho, ortho′-disubstituted aryl radicals, at least one Ziegler catalyst component (B), and at least one activating compound (C) by varying the polymerization temperature, a process for copolymerizing ethylene and at least one other olefin in the presence of such a polymerization catalyst system comprising utilizing the controlling method, a method for altering the polymer composition of an ethylene copolymer obtained by copolymerizing ethylene and at least one other olefin in the presence of such a polymerization catalyst system by varying the polymerization temperature and a method for transitioning from one ethylene copolymer grade to another by using the method for altering the polymer composition.

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31-10-2013 дата публикации

Catalyst Composition with Alkoxyalkyl Ester Internal Electron Donor and Polymer from Same

Номер: US20130289231A1
Принадлежит:

Disclosed herein are catalyst compositions and polymers, i.e., propylene-based polymers, produced therefrom. The present catalyst compositions include an internal electron donor with a compounded alkoxyalkyl ester and optionally a mixed external electron donor. The present catalyst compositions improve catalyst selectivity, improve catalyst activity, and/or improve hydrogen response. Propylene-based polymer produced from the present catalyst composition has a melt flow rate greater than 10 g/10 min. 1. (canceled)4. The process wherein Rand Rare selected from a C-Calkene group with the structure (II){'br': None, 'sub': 11', '12, 'C(H)=C(R)(R)\u2003\u2003(II)'}{'sub': 11', '12', '11', '12', '1', '18, 'wherein Rand Rare the same or different, each of Rand Ris selected from the group consisting of hydrogen and a C-Chydrocarbyl group.'}5. The process of wherein the procatalyst composition comprises greater than 10 wt % of the alkoxyalkyl ester.6. The process of comprising a mixed external electron donor (M-EED) comprising an activity limiting agent (ALA) and a selectivity control agent (SCA).7. The process of comprising a mixed external electron donor (M-EED) comprising an activity limiting agent (ALA) claim 6 , a first selectivity control agent (SCA1) claim 6 , and a second selectivity control agent (SCA2).8. A polymerization process comprising:contacting, under polymerization conditions, propylene and optionally one or more comonomers with a catalyst composition comprising a procatalyst composition with a greater than 4.5 wt % of a compounded alkoxyalkyl ester, a cocatalyst, and an external electron donor; andforming a propylene-based polymer.9. The process of wherein the catalyst composition comprises a mixed external electron donor (M-EED) comprising an activity limiting agent (ALA) claim 8 , a first selectivity control agent (SCA1) claim 8 , and a second selectivity control agent (SCA2) claim 8 , the process comprisingforming a propylene-based polymer comprising an ...

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