Contains Organic Non-metal Containing B Or Si Material Patents (Class 526/125.3)
-
Patent number: 7989383Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent (SCA) comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent (ALA) compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl(poly)(oxyalkyl)-(poly)ester derivatives thereof; or inertly substituted derivatives of the foregoing.Type: GrantFiled: August 4, 2010Date of Patent: August 2, 2011Assignee: Dow Global Technologies LLCInventors: Linfeng Chen, Richard E. Campbell, Jr.
-
Patent number: 7985815Abstract: A polymer comprising a first repeat unit comprising ArhX2 wherein ArhX2 comprises a substituted or unsubstituted heteroaryl group and each X is the same or different and independently comprises a substituted or unsubstituted aryl or heteroaryl group and a second repeat unit that is adjacent to the first repeat unit wherein each X that is part of a main body of the polymer backbone is directly conjugated to the second repeat unit.Type: GrantFiled: April 10, 2002Date of Patent: July 26, 2011Assignee: Cambridge Display Technology LimitedInventors: Richard O'Dell, Carl Towns, Mary McKiernan
-
Patent number: 7977435Abstract: Provided are a propylene polymer compositions comprising a propylene copolymer and a propylene homopolymer polymerized in the presence of the propylene copolymer. The propylene polymer compositions exhibit properties such as broad molecular weight distribution, low crystallinity, high solubles and superior crystallization kinetics and are useful in fast cycle-time processing methods such as injection molding, sheet extrusion, thermoforming, and oriented film fabrication. Also provided is a process for preparing the propylene polymer compositions in the presence of a catalyst and at least two electron donors using sequential or parallel polymerization reaction zones. Finally, articles made from the propylene polymer composition are provided, particularly articles requiring high stiffness, high heat deflection temperature, good fatigue resistance and low temperature impact resistance such as appliance parts.Type: GrantFiled: July 12, 2006Date of Patent: July 12, 2011Inventors: Chon-Yie Lin, Stephen Francis Broadbent
-
Publication number: 20110136981Abstract: The present invention relates to butene-1 copolymers containing up to 40% by mol of ethylene and/or propylene derived units characterized by the following properties: d) Product of the reactivity ratios r1·r2?2; e) Content of butene-1 units in form of isotactic pentads (mmmm)>98%; and f) absence of 4,1 insertions of butene units.Type: ApplicationFiled: January 26, 2011Publication date: June 9, 2011Applicant: BASELL POLIOLEFINE ITALIA S.P.A.Inventors: Giampiero Morini, Fabrizio Piemontesi, Gianni Vitale, Daniele Bigiavi, Anteo Pelliconi, Enea Garagnani, Pietro Baita
-
Patent number: 7951883Abstract: Disclosed is a multimodal, high density, homopolyethylene barrier resin. The resin is preferably made by a multistage process. The process comprises a first stage in which ethylene is homopolymerized in the presence of a Ziegler-Natta catalyst, organoaluminum cocatalyst, alkoxysilane modifier, and hydrogen. The reaction mixture from the first stage is devolatilized to remove all or substantially all of the hydrogen. The polymerization continues in a second stage wherein ethylene is added to the devolatilized reaction mixture to produce the barrier resin. The barrier resin provides films with improved barrier properties.Type: GrantFiled: December 4, 2009Date of Patent: May 31, 2011Assignee: Equistar Chemicals, LPInventors: Sameer D. Mehta, Harilaos Mavridis, Jeffrey C. Haley, Philip J. Garrison, Jeffrey S. Borke
-
Patent number: 7939460Abstract: A production process is provided for an olefin polymerization catalyst component precursor, including the steps of (I) adding an organomagnesium compound to a solution containing a solvent, a Si—O bond-containing silicon compound, and a defined titanium compound, under agitation, and continuing the agitation until a magnesium concentration in a liquid phase of a reaction mixture decreases to 9 ppm by weight or lower, and (II) solid-liquid separating the reaction mixture. A production process is also provided for an olefin polymerization catalyst component using the above precursor. Further, producing process is provided for an olefin polymerization catalyst using the above catalyst component. Still further, a production process is provided for an olefin polymer using the above catalyst.Type: GrantFiled: October 9, 2009Date of Patent: May 10, 2011Assignee: Sumitomo Chemical Company, LimitedInventors: Wataru Hirahata, Shinya Nakahara
-
Patent number: 7893003Abstract: The present disclosure provides a Ziegler-Natta catalyst composition comprising a procatalyst, a cocatalyst and a mixed external electron donor comprising a first selectivity control agent, a second selectivity control agent, and an activity limiting agent. A polymerization process incorporating the present catalyst composition produces a high-stiffness propylene-based polymer with a melt flow rate greater than about 50 g/10 min. The polymerization process occurs in a single reactor, utilizing standard hydrogen concentration with no visbreaking.Type: GrantFiled: February 23, 2009Date of Patent: February 22, 2011Assignee: Dow Global Technologies Inc.Inventor: Linfeng Chen
-
Publication number: 20110034650Abstract: The invention relates to a catalyst system comprising I. a solid reaction product obtained by reaction of: (a) a hydrocarbon solution comprising (1) an organic oxygen containing magnesium compound or a halogen containing magnesium compound and (2) an organic oxygen containing titanium compound and (b) a mixture comprising a metal compound having the formula MeRnX3-n wherein X is a halogenide, Me is a metal of Group III of Mendeleev's Periodic System of Chemical Elements, R is a hydrocarbon radical containing 1-10 carbon atoms and 0?n?3 and a silicon compound of formula RmSiCl4-m wherein 0?m?2 and R is a hydrocarbon radical containing 1-10 carbon atoms wherein the molar ratio of metal from (b): titanium from (a) is lower then 1:1 and II. an organoaluminium compound having the formula AlR3 in which R is a hydrocarbon radical containing 1-10 carbon atoms.Type: ApplicationFiled: March 10, 2009Publication date: February 10, 2011Inventors: Nicolaas Hendrika Friederichs, Raymond Gerlofsma
-
Patent number: 7884164Abstract: The present invention relates to a catalyst system for olefin polymerization and a method for olefin polymerization using the same. More particularly, the present invention relates to a Ziegler-Natta catalyst system for olefin polymerization comprising a transition metal compound as a main catalyst component, an organic metal compound as a cocatalyst component, and a cyclic organosilane compound, trioxasilocane as an external electron donor, and a method for olefin polymerization using the same. According to the present invention, a polyolefin having improved various properties such as polymerization activity, melt-flow ability, isotacticity, molecular weight distribution and apparent density can be produced.Type: GrantFiled: January 21, 2008Date of Patent: February 8, 2011Assignee: LG Chem, Ltd.Inventors: Nan-Young Lee, Churl-Young Park, Dong-Ryul Im, Jin-Woo Lee, Ro-Mi Lee
-
Patent number: 7858716Abstract: Disclosed is a production method of polypropylene having high MFR value and excellent product qualities with high productivity. The method enables to produce a propylene polymer by a gas phase process where the reaction heat is removed mainly by the heat of vaporization of liquefied propylene. The method is characterized by using a solid catalyst component (A) which is prepared by contacting components (A1), (A2) and (A3) shown below. Further disclosed are: a propylene polymer produced by the method; a propylene polymer composition; and a molded body of the composition. Component (A1): a solid component containing titanium, magnesium and a halogen as essential components. Component (A2): a vinyl silane compound. Component (A3): an organosilicon compound having an alkoxy group (A3a) and/or a compound having at least two ether bonds (A3b).Type: GrantFiled: January 31, 2007Date of Patent: December 28, 2010Assignee: Japan Polypropylene CorporationInventors: Yoshitaka Kobayashi, Takanori Nakashima, Yuusuke Yamada, Iku Kouzai, Youichi Maeda, Kouji Nakayama, Keiji Fukuda
-
Publication number: 20100324240Abstract: The present invention relates to catalysts systems for the polymerization of ethylene and its mixtures with olefins CH2?CHR wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising (A) a solid catalyst component comprising Ti, Mg, halogen, and optionally an electron donor compound in a donor/Ti molar ratio lower than 3, (B) an aluminum alkyl compound and (C) a silicon compound of formula Xm,R1nSi(OR2)4-(m+n)in which X is bromine or fluoride or a halogen containing hydrocarbon group, R1 is a C1-C10 aliphatic or alicyclic group, R2 is C1-C10 alkyl group, m is an integer ranging from 1 to 3, n is 0 or 1 provided that the sum m+n is not higher than 3. The catalyst of the invention is suitably used in (co)polymerization processes of ethylene to prepare (copolymers having narrow Molecular Weight Distribution (MWD) and high activity.Type: ApplicationFiled: March 3, 2009Publication date: December 23, 2010Applicant: Basell Polyolefine Italia s.r.lInventors: Masaki Fushimi, Martin Schneider, Giampiero Morini
-
Patent number: 7851578Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for succinate-containing Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity along with broadened molecular weight distribution.Type: GrantFiled: December 18, 2007Date of Patent: December 14, 2010Assignee: Fina Technology, Inc.Inventors: Kenneth P. Blackmon, Joseph L. Thorman, Shabbir Ahmedbhai Malbari, Michael Wallace
-
Publication number: 20100292420Abstract: The present invention relates to catalysts for the polymerization of ethylene and its mixtures with olefins CH2?CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising (A) a solid catalyst component comprising Ti, Mg, halogen, and optionally an electron donor compound in a donor/Ti molar ratio lower than 3, (B) an aluminum alkyl compound and (C) a silicon compound of formula RmSi(OEt)n in which R is C1-C20 alkyl group, m is an integer ranging from 1 to 3, n is (4-m) with the proviso that when R is equal to, or higher than, C3 m is 1 or 2. 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 activity.Type: ApplicationFiled: August 19, 2008Publication date: November 18, 2010Applicant: Basell Poliolefine Italia s.r.l.Inventors: Masaki Fushimi, Martin Schneider, Giampiero Morini
-
Publication number: 20100249330Abstract: Process for the production of propylene polymers having a Melt Flow rate (230° C., 2.16 Kg) higher than 30 g/10? and preferably higher than 50 g/10? and also characterized by having broad molecular weight distribution (MWD) carried out in the presence of a catalyst system comprising (a) a solid catalyst component containing Mg, Ti, halogen and an electron donor compound selected from succinates; (b) an alkylaluminum cocatalyst; and (c) a silicon compound of formula R1Si(OR)3 in which R1 is a branched alkyl and R is, independently, a C1-C10 alkyl.Type: ApplicationFiled: October 2, 2008Publication date: September 30, 2010Applicant: Basell Poliolefine Italia s.r.l.Inventors: Paola Massari, Marco Ciarafoni, Ofelia Fusco, Hirofumi Murakami, Takeshi Nakajima, Shintaro Takemiya
-
Patent number: 7781363Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent (SCA) comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent (ALA) compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl(poly)(oxyalkyl)-(poly)ester derivatives thereof; or inertly substituted derivatives of the foregoing.Type: GrantFiled: January 12, 2009Date of Patent: August 24, 2010Assignee: Dow Global Technologies Inc.Inventors: Linfeng Chen, Richard E. Campbell, Jr.
-
Publication number: 20100130707Abstract: Provided are a catalyst for polymerization of propylene and a method for polymerization of propylene using the same. Specifically, provided are a catalyst for propylene polymerization which comprises titanium tetrachloride, an internal electron donor, and dialkoxy magnesium particles, as a carrier, obtained from the reaction of a halogen compound or nitrogen-halogen compound as a reaction initiator, metal magnesium and an alcohol, and a method for propylene polymerization using the same.Type: ApplicationFiled: October 31, 2007Publication date: May 27, 2010Applicant: SAMSUNG TOTAL PETROCHEMICALS CO., LTD.Inventors: Eun-Il Kim, Young-Joo Lee, Hoe-Chul Jung, Joon-Ryeo Park
-
Patent number: 7718565Abstract: The present invention relates to a method for preparing a solid catalyst for ethylene polymerization and/or copolymerization. More specifically, the present invention relates to a solid titanium catalyst supported in a magnesium support which has an extremely high catalytic activity, advantageous catalyst shape and a simple preparation process, capable of producing a polymer with a high bulk density, a narrow and uniform particle size distribution and a broad molecular weight distribution, and a method for preparation of the same. A silicon-containing magnesium compound is prepared by reacting an electron donor such as a silicon compound containing an alkoxy group of Formula 1, a silicon compound containing an alkoxy group of Formula 2, or a mixture thereof in a magnesium compound solution, and reacted with a titanium compound to obtain the solid catalyst of the present invention.Type: GrantFiled: October 14, 2005Date of Patent: May 18, 2010Assignee: Korea Petrochemical Ind. Co., Ltd.Inventors: Kap-Ku Kang, Byung-Ju Park, Jae-Kwon Jang, Young-Tae Jeong
-
Patent number: 7704910Abstract: A catalyst for olefin polymerization comprising (A) a solid catalyst component prepared by causing (a) a magnesium compound, (b) a tetravalent titanium halide compound, and (c) an electron donor compound to come in contact with each other, (B) an organoaluminum compound of the general formula R1pAlQ3-p, and (C) an oligomer of an organosilicon compound of the following chemical formula; R4—(R2R3SiO)m—R5 can produce olefin polymers having higher stereoregularity and a broader molecular weight distribution in a higher yield than conventional catalysts.Type: GrantFiled: May 17, 2005Date of Patent: April 27, 2010Assignee: Toho Titanium Co., Ltd.Inventors: Motoki Hosaka, Takefumi Yano, Hiroyuki Kono
-
Patent number: 7687426Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing cocatalyst; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 70 to 98 mol percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 30 to 2 mol percent of one or more alkoxysilane compounds containing one or more 5- or 6-membered cyclic groups optionally containing one or more Group 14, 15 or 16 heteroatoms.Type: GrantFiled: June 24, 2008Date of Patent: March 30, 2010Assignee: Dow Global Technologies Inc.Inventors: Jeffery S. Bradley, Linfeng Chen, William G. Sheard, Michael P. Zummallen
-
Patent number: 7678867Abstract: A process for preparing a broad molecular weight polyethylene carried out in the presence of a catalyst system comprising (i) a solid catalyst component comprising Mg, Ti, halogen, and optionally an internal electron donor compound, and (ii) an Al-alkyl cocatalyst said process comprising at least two step of polymerization (a) and (b), in which: in a first step (a) ethylene is polymerized in the presence of a molecular weight regulator in order to produce a ethylene (co)polymer, and in a further step (b), which is carried out in the presence of an external electron donor compound added to this polymerization step as a fresh reactant, ethylene is copolymerized with an alpha olefin of formula CH2?CHR, in which R is a C1-C20 hydrocarbon group, to produce an ethylene copolymer having a molecular weight higher than that of the copolymer produced in step (b).Type: GrantFiled: November 24, 2004Date of Patent: March 16, 2010Assignee: Basell Polyolefine GmbHInventors: Pietro Baita, Massimo Covezzi, Gabriele Mei, Giampiero Morini, Joachim T. M. Pater
-
Patent number: 7678868Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent (SCA) comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent (ALA) compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl(poly)(oxyalkyl)-(poly)ester derivatives thereof; or inertly substituted derivatives of the foregoing.Type: GrantFiled: January 12, 2009Date of Patent: March 16, 2010Assignee: Dow Global Technologies Inc.Inventors: Linfeng Chen, Richard E. Campbell, Jr.
-
Patent number: 7662901Abstract: The present invention is directed to a high melt flow rate high crystallinity polypropylene homopolymer. The present invention likewise describes a bulk polymerization process using a Ziegler-Natta catalyst to produce the high melt flow rate high crystallinity polypropylene homopolymer according to the invention.Type: GrantFiled: November 30, 2007Date of Patent: February 16, 2010Assignee: Sunoco Chemicals, Inc.Inventors: Craig C. Meverden, Sehyun Kim
-
Patent number: 7619048Abstract: Disclosed is a method for producing a propylene polymer using an alkoxysilane compound comprising a trialkylsilyl group in its molecular structure, specifically a method for easily producing an isotactic propylene polymer with dramatically improved melt flowability, owing to the improved reactivity of hydrogen that is provided as a molecular weight regulator, by specifically using an alkoxysilane compound comprising a trialkylsilyl group in the molecular structure thereof as an external electron donor in propylene polymerization.Type: GrantFiled: May 5, 2006Date of Patent: November 17, 2009Assignee: Samsung Total Petrochemicals Co., Ltd.Inventors: Joon-Ryeo Park, Ho-Sik Chang, Young-Joo Lee, Jin-Kyu Ahn
-
Patent number: 7619049Abstract: Cyclic organosilicon compounds that may be employed as an electron donor for polymerization catalyst systems, polymerization catalyst systems employing the cyclic organosilicon compounds as an electron donor, methods of making the polymerization catalyst systems, and polymerization processes to produce polyolefin are disclosed. The organosilicon compounds, which are useful as electron donors in polymerization catalyst systems for the production of polyolefins, are represented by the following formula: wherein Q1 and Q2 may be identical or different and are each hetero-atoms selected from the group consisting of N, O, S, Si, B, and P, with the proviso that Q1 and Q2 cannot both be N or both be O. R1 and R2 may be identical or different and are each hydrocarbon-based substituents to Q1 and Q2, respectively. The subscripts m and n are independently 0 to 3. R3 is an aliphatic, alicyclic or aromatic group. R4 is a hydrocarbon group with 1 to 6 carbon atoms.Type: GrantFiled: April 13, 2009Date of Patent: November 17, 2009Assignee: Formosa Plastics Corporation, U.S.A.Inventors: Yiqun Fang, Honglan Lu
-
Patent number: 7618913Abstract: A high activity magnesium-based supported catalyst component useful in a catalyst system for the compolymerization of ethylene and alpha-olefin and a process for preparing the catalyst component is described. In the process, alkoxysilane ester is contacted with a halogen-substituted silane to form an organic silicon complex. Optionally, the organic silicon complex is contacted with an aminosilane compound to form an organic silicon complex containing nitrogen. The organic silicon complex containing nitrogen or the organic silicon complex is contacted with a transition metal compound to form an organic silicon complex containing transition metal. The organic silicon complex containing transition metal is then contacted with a substituted aromatic ring nitrogen compound to form a fourth reaction complex, which is then contacted with a magnesium-based composite support that has been prepared in situ by reacting metallic magnesium with an alkyl or aromatic halide to form the catalyst component.Type: GrantFiled: August 31, 2006Date of Patent: November 17, 2009Assignee: Formosa Plastics Corporation, U.S.A.Inventors: Guangxue Xu, Honglan Lu, Chih-Jian Chen
-
Publication number: 20090281259Abstract: The present invention provides a catalyst for propylene polymerization and a method for propylene polymerization using the same, specifically, a catalyst for propylene polymerization, which is prepared by reacting dialkoxy magnesium with titanium halide compound or silane halide compound and internal electron donor in the presence of an organic solvent, and a method for propylene polymerization which can produce polypropylene having 99% or more of iso-tacticity index, by mixing and reacting said catalyst, alkyl aluminum, external electron donor and propylene.Type: ApplicationFiled: September 23, 2005Publication date: November 12, 2009Applicant: SAMSUNG TOTAL PETROCHEMICALS CO., LTD.Inventors: Joon-Ryeo Park, Ho-Sik Chang, Jin-Kyu Ahn, Sang-Yeol Kim
-
Patent number: 7605215Abstract: A process for producing an olefin copolymerization catalyst, comprising the step of contacting, with one another, (A) a solid catalyst component containing a titanium atom, a magnesium atom and a halogen atom, (B) an organoaluminum compound and/or organoaluminumoxy compound, and (C) a nitrogen-containing aromatic heterocyclic compound, whose one or more carbon atoms adjacent to its nitrogen atom are linked to an electron-donating group, or a group containing an electron-donating group; and a process for producing an olefin copolymer using the an olefin copolymerization catalyst.Type: GrantFiled: November 26, 2007Date of Patent: October 20, 2009Assignee: Sumitomo Chemical Company, LimitedInventors: Shinya Nakahara, Shin-ichi Kumamoto
-
Publication number: 20090259006Abstract: Disclosed is a production method of polypropylene having high MFR value and excellent product qualities with high productivity. The method enables to produce a propylene polymer by a gas phase process where the reaction heat is removed mainly by the heat of vaporization of liquefied propylene. The method is characterized by using a solid catalyst component (A) which is prepared by contacting components (A1), (A2) and (A3) shown below. Further disclosed are: a propylene polymer produced by the method; a propylene polymer composition; and a molded body of the composition. Component (A1): a solid component containing titanium, magnesium and a halogen as essential components. Component (A2): a vinyl silane compound. Component (A3): an organosilicon compound having an alkoxy group (A3a) and/or a compound having at least two ether bonds (A3b).Type: ApplicationFiled: January 31, 2007Publication date: October 15, 2009Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Yoshitaka Kobayashi, Takanori Nakashima, Yuusuke Yamada, Iku Kouzai, Youichi Maeda, Kouji Nakayama, Keiji Fukuda
-
Publication number: 20090253873Abstract: A catalyst for polymerization of olefins and a process for producing an olefin polymer or copolymer are disclosed. The catalyst comprises (a) a solid catalyst component obtained by causing an organosilicon compound (b) represented by the formula, [CH2?CH—(CH2)n]qSiR34-q, and an organoaluminum compound to come in contact with a solid component comprising magnesium, titanium, halogen, and an electron donor compound, or a solid catalyst component obtained by causing a magnesium compound, two types of titanium compounds, an electron donor compound, and an organosilicon compound to come in contact with each other, and (B) an organoaluminum compound. The process for producing an olefin polymer or copolymer comprises polymerizing olefins in the presence of the catalyst. The catalyst has a high catalytic activity, exhibits excellent hydrogen response, and can produce polymers with high stereoregularity and a broad molecular weight distribution at a high yield.Type: ApplicationFiled: December 2, 2005Publication date: October 8, 2009Applicant: TOHO CATALYST CO., LTDInventors: Motoki Hosaka, Maki Sato
-
Publication number: 20090253874Abstract: A solid catalyst component for polymerization of olefins, a catalyst for polymerization of olefins, and a method for producing an olefin polymer are provided. The solid catalyst component (A) is obtained by causing a solid component (a) containing magnesium, titanium, and a halogen atom to come in contact with an organosilicon compound (b) shown by the formula, [CH2=CH—(CH2)n]qSiR14-q. A catalyst for polymerization of olefins (B) is formed from an organoaluminum compound shown by the formula R2rAlQ3-r. A process for producing an olefin polymer comprises polymerizing olefins in the presence of the catalyst. By using the catalyst, a polymer which has high catalyst activity and stereoregularity and is excellent in maintaining activity can be obtained in a high yield.Type: ApplicationFiled: August 28, 2006Publication date: October 8, 2009Inventors: Motoki Hosaka, Hiroyuki Kono
-
Publication number: 20090182103Abstract: Disclosed is a method for polymerization and copolymerization of olefin characterized by polymerizing or copolymerizing olefins in the presence of: (A) a prepolymerized catalyst obtained by prepolymerizing olefins in the presence of (a) a solid complex titanium catalyst prepared by the following steps, (b) an aluminum alkyl and halogenated aluminum, and (c) an electron donor, wherein the steps comprises: (i) preparing a magnesium compound solution by dissolving a magnesium halide compound into an oxygen-containing solvent mixture of a cyclic ether and one or more alcohols; (ii) preparing a carrier by firstly reacting the resulted magnesium compound solution with a titanium halide compound at ?10-30° C.Type: ApplicationFiled: March 26, 2007Publication date: July 16, 2009Applicant: SAMSUNG TOTAL PETROCHEMICALS, LTD.Inventors: Ho-Sik Chang, Chung-Byun Yang
-
Publication number: 20090171044Abstract: Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of an olefin containing a solid titanium catalyst component having a substantially spherical shape and containing an internal electron donor, a support made by contacting substantially equal molar amounts of a magnesium compound and an epoxy compound in the presence of an aprotic solvent and subsequent treatment with a halogenating agent to provide a magnesium based catalyst support. The catalyst system can further contain an organoaluminum compound and an organosilicon compound. Also disclosed are methods of polymerizing or copolymerizing an alpha-olefin. The methods involve contacting an olefin with a catalyst system containing the solid titanium catalyst component.Type: ApplicationFiled: December 31, 2007Publication date: July 2, 2009Applicant: BASF CATALYSTS LLCInventor: Michael D. Spencer
-
Patent number: 7531607Abstract: A process for producing at least two different propylene polymer grades, in which process the isotacticity of the polymer is changed while keeping the melt flow rate of the polymer at a predetermined level during a transition of production from a first polymer grade to a second. The process is carried out in a polymerization arrangement comprising at least one polymerization reactor, where propylene is polymerized, optionally with comonomers, under polymerization conditions in the presence of hydrogen as a molecular weight controlling agent and a Ziegler-Natta catalyst system. The catalyst system comprises a catalyst component and an external donor. During a transition of production from the first polymer grade to the second, the external donor is changed, but the hydrogen feed is kept at a predetermined level.Type: GrantFiled: December 17, 2004Date of Patent: May 12, 2009Assignee: Borealis Technology OyInventor: Torvald Vestberg
-
Patent number: 7491670Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; a selectivity control agent (SCA) comprising at least one silicon containing compound containing at least one C1-10 alkoxy group bonded to a silicon atom, and one or more activity limiting agent (ALA) compounds comprising one or more aliphatic or cycloaliphatic carboxylic acids; alkyl-, cycloalkyl- or alkyl(poly)(oxyalkyl)-(poly)ester derivatives thereof; or inertly substituted derivatives of the foregoing.Type: GrantFiled: September 17, 2004Date of Patent: February 17, 2009Assignee: Dow Global Technologies Inc.Inventors: Linfeng Chen, Richard E. Campbell, Jr.
-
Patent number: 7470764Abstract: It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films with improved properties. The catalyst systems of the invention provide for controlled chain defects/defect distribution and thus a regulated microtacticity. Consequently, the curve of storage modulus (G?) v. temperature is shifted such that the film achieves the same storage modulus at a lower temperature enabling faster throughput of polypropylene film through a high-speed tenter.Type: GrantFiled: January 31, 2007Date of Patent: December 30, 2008Assignee: Fina Technology, Inc.Inventors: Kenneth Paul Blackmon, David J. Rauscher, Michael Ray Wallace
-
Patent number: 7465776Abstract: High melt flow rate high crystallinity polypropylene homopolymer are produced in a bulk polymerization process using a Ziegler-Natta catalyst containing a combination of two internal electron donors and selected external donors. The high melt flow rate, high crystallinity polypropylene homopolymers produced according to the current invention display improved flexural modulus and tensile yield stress when nucleated.Type: GrantFiled: May 30, 2007Date of Patent: December 16, 2008Assignee: Sunoco, Inc. (R&M)Inventors: Craig Meverden, Andrew Schnitgen, Sehyun Kim
-
Publication number: 20080293898Abstract: Disclosed is a catalyst for olefin polymerization, comprising: Component [A]: a prepolymer obtained by olefin prepolymerization on solid titanium catalyst component having an average particle size of 25 to 70 ?m produced by contacting of a solid component (i) having an average particle size of 26 to 75 ?m, containing magnesium, titanium, halogen, and an electron donor (c3), and being free from detachment of titanium by washing with hexane at 25° C., a polar compound (ii) having a dipole moment of 0.50 to 4.Type: ApplicationFiled: June 24, 2005Publication date: November 27, 2008Applicant: MITSUI CHEMICALS, INC.Inventors: Masashi Higuchi, Shuji Matsumura, Yoshio Sasaki, Kiyomi Morita, Satoshi Hashizume
-
Patent number: 7452947Abstract: A process for the preparation of a silicon containing transition metal compound that includes the steps of (a) non-hydrolytic sol-gel condensation of a silane of formula LxSiQn wherein L is a ?-bonded ligand, Q is an anionic ligand, and x+n=4 with a halogenated silane (or siloxane) and an alkoxysilane, (b) optionally alkylation, (c) deprotonation and (d) addition of a transition metal compound. The process allows for the preparation of transition metal compounds which may suitably be used with cocatalysts for the polymerization of olefins, in particular for such processes carried out in the gas phase.Type: GrantFiled: August 14, 2003Date of Patent: November 18, 2008Assignee: BP Chemicals LimitedInventors: Henri Cramail, Alain Deffieux, Cedric Dever, Sergio Mastroianni
-
Patent number: 7393806Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more monoesters of aromatic carboxylic acid internal electron donors; one or more aluminum containing cocatalyst; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 70 to 98 mol percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 30 to 2 mol percent of one or more alkoxysilane compounds containing one or more 5- or 6-membered cyclic groups optionally containing one or more Group 14, 15 or 16 heteroatoms.Type: GrantFiled: August 18, 2004Date of Patent: July 1, 2008Assignee: Dow Global Technologies Inc.Inventors: Jeffery S. Bradley, Linfeng Chen, William G. Sheard, Michael P. Zummallen
-
Patent number: 7381779Abstract: A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of aromatic dicarboxylic acid internal electron donors; one or more aluminum containing cocatalysts; and a mixture of two or more different selectivity control agents, said SCA mixture comprising from 1 to 99 percent of one or more esters of one or more aromatic monocarboxylic acids or substituted derivatives thereof, and from 99 to 1 percent of one or more alkoxysilane compounds.Type: GrantFiled: August 18, 2004Date of Patent: June 3, 2008Assignee: Dow Global Technologies IncInventors: Richard E. Campbell, Jr., Linfeng Chen
-
Patent number: 7365136Abstract: The present invention concerns a high melt strength propylene polymer or copolymer suitable for manufacturing foams and thermoformed product exhibiting a melt strength of at least 3 g and comprising a high molar mass portion and a low or medium molar mass portion. The polymers are produced by subjecting propylene and optionally other olefins to polymerization in a plurality of polymerization reactors connected in series, employing different amounts of hydrogen as a molar mass modifier in at least two of the reactors, and carrying out the polymerization reaction in the presence of a catalyst system capable of catalyzing the formation of a high molar mass polymerization product having a MFR2 of less than 0.1 g/10 min and a low or medium molar mass polymerization product having a MFR2 of more than 0.5 g/10 min.Type: GrantFiled: March 8, 2005Date of Patent: April 29, 2008Assignee: Borealis Technology OyInventors: Paivi Huovinen, Ali Harlin, Pirjo Jaaskelainen, Amir Karbasi, Nina Manner
-
Patent number: 7351678Abstract: The invention relates to the use of nitrogenous aluminium organyl complexes of general formula (I) as co-catalysts in heterogeneous polymerisation reactions of propene. In said formula: R, R?, R1 and R1? independently of one another represent branched or unbranched C1-C7 alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl or alkynyl; R2 represents unsubstituted, monoalkylated or polyalkylated and/or monofluorinated or polyfluorinated aromatic hydrocarbons from group (II); R3 and R4 independently of one another represent CH2, CF2 oder C(R1)2; m stands for 0, 1 or 2; n stands for 0, 1 or 2; o stands for 0 or 1, all independently of one another.Type: GrantFiled: September 11, 2002Date of Patent: April 1, 2008Assignee: Merck Patent GmbHInventors: Kartin Köhler, Herbert Schumann, Birgit Corinna Wassermann, Wilfried Wassermann, Katharina Lange, Sebastian Dechert, Markus Hummert, Stefan Schutte, Walter Kaminsky, Andrea Eisenhardt, Björn Heuer, Andre Laban
-
Patent number: 7348381Abstract: Provided herein are propylene polymers which are capable of being used as thermoplastic polyolefins just as they emerge from the reactor system described, without further compounding of components which substantially modify the physical properties of the polymers, as such compounding is required of polymers of the prior art. Polymers according to the invention unexpectedly possess both low temperature ductility and high flexural modulus, which properties were related in inverse proportion to one another in the polymers of the prior art.Type: GrantFiled: October 9, 2002Date of Patent: March 25, 2008Assignee: Flint Hills Resources, LPInventors: Bill R. Bodiford, Lixin Sun, Gerald Cummings, Pierre Donaldson, George Allen
-
Patent number: 7345122Abstract: Disclosed is a process for the preparation of a high stereospecific (isotactic) polybutylene polymer comprising the step of polymerizing a reactive monomer, 1-butene, which is used or is not used as a solvent, in the presence of catalyst and inert gas. According to the present invention, it is possible to prepare a high stereospecific polybutylene polymer in much higher activity than that of any other known processes for the preparation of a high stereospecific polybutylene polymer. The high stereospecific polybutylene polymer according to the present invention is a homopolymer of 1-butene, or a copolymer containing a-olefin and up to 40% by weight of a comonomer, wherein titanium in the catalyst residues is not detected in the ppm level, stereospecificity (Isotactic Index, mmmm %) determined by 13C-NMR is 96 or more, molecular weight distribution (Mw/Mn) is 3-6, and molecular weight distribution (Mw/Mn) can be controlled to 8 or more.Type: GrantFiled: March 31, 2004Date of Patent: March 18, 2008Assignee: Ylem Technology Holdings, Inc.Inventors: Seung Pyo Hong, Min Kyu Park, Deok Kyeong Kim, Seok Joong Hwang
-
Publication number: 20080058198Abstract: A high activity magnesium-based supported catalyst component useful in a catalyst system for the compolymerization of ethylene and alpha-olefin and a process for preparing the catalyst component is described. In the process, alkoxysilane ester is contacted with a halogen-substituted silane to form an organic silicon complex. Optionally, the organic silicon complex is contacted with an aminosilane compound to form an organic silicon complex containing nitrogen. The organic silicon complex containing nitrogen or the organic silicon complex is contacted with a transition metal compound to form an organic silicon complex containing transition metal. The organic silicon complex containing transition metal is then contacted with a substituted aromatic ring nitrogen compound to form a fourth reaction complex, which is then contacted with a magnesium-based composite support that has been prepared in situ by reacting metallic magnesium with an alkyl or aromatic halide to form the catalyst component.Type: ApplicationFiled: August 31, 2006Publication date: March 6, 2008Inventors: Guangxue Xu, Honglan Lu, Chih-Jian Chen
-
Patent number: 7329714Abstract: The present invention relates to a method of polymerizing olefin containing the step of pre-polymerization. More precisely, according to the method of the present invention, the reaction speed and temperature are regulated for pre-polymerization of a catalyst and then the pre-polymerized catalyst is added for the polymerization of propylene. Propylene having an improved molecular weight distribution, hydrogen reactivity and tacticity is produced.Type: GrantFiled: January 18, 2007Date of Patent: February 12, 2008Assignee: LG Chem, Ltd.Inventors: Nan-young Lee, Churl-young Park, Jin-woo Lee, Yi-young Choi, So-young Park
-
Patent number: 7276463Abstract: A catalyst having a high catalyst activity, which enables the production of an ?-olefin polymer improved in stereoregularity by decreasing an amorphous component, and a production method for the ?-olefin polymer, are developed. Described are a catalyst for polymerizing ?-olefin comprising a combination of (A) a solid catalyst component containing magnesium, titanium and a halogen as an essential component, which may contain if necessary, a silicon compound, an organoaluminum compound, and an electron donor; (B) an organoaluminum compound; and (C) a compound containing a C(?O)N bond such as an amide or an urea; which may further contain if necessary, (D) a silicon compound or a diether compound; and a production method for an ?-olefin polymer using the same.Type: GrantFiled: September 9, 2003Date of Patent: October 2, 2007Assignee: Japan Polypropylene CorporationInventors: Toshihiko Sugano, Kouji Nakayama, Shigeyuki Matsunami
-
Publication number: 20070208147Abstract: The present invention relates to a method of polymerizing olefin containing the step of pre-polymerization. More precisely, according to the method of the present invention, the reaction speed and temperature are regulated for pre-polymerization of a catalyst and then the pre-polymerized catalyst is added for the polymerization of propylene. Propylene having an improved molecular weight distribution, hydrogen reactivity and tacticity is produced.Type: ApplicationFiled: January 18, 2007Publication date: September 6, 2007Applicant: LG CHEM, LTD.Inventors: Nan-young LEE, Churl-young PARK, Jin-woo LEE, Yi-young CHOI, So-young PARK
-
Patent number: 7244794Abstract: The present invention relates to a method for producing a propylene polymer having a very high melt flowability, specifically to a method for producing an isotactic propylene polymer having a dramatically improved melt flowability with a relatively high production yield in convenient way, by improving the reactivity of hydrogen that is served as a molecular weight controlling agent in propylene polymerization.Type: GrantFiled: June 21, 2005Date of Patent: July 17, 2007Assignee: Samsung Total Petrochemicals Co., Ltd.Inventors: Joon-Ryeo Park, Young-Joo Lee, Jin-Kyu Ahn, Ho-Sik Chang
-
Patent number: 7238758Abstract: The invention has an object to provide a catalyst for polymerizing or copolymerizing an ?-olefin, catalyst constituent thereof, and method of polymerizing ?-olefins with the catalyst, for production of ?-olefin polymers or copolymers with high hydrogen response, high polymarization reaction rate, high stereoregularity and excellent melt fluidity. The invention discloses a catalyst constituent of the catalyst for polymerizing or copolymerizing an ?-olefin, represented by Formula 37 or 38: Si(OR1)3(NR2R3)Formula 37 (where in Formula 37, R1 is a hydrocarbon group with 1 to 6 carbon atoms; R2 is a hydrocarbon group with 1 to 12 carbon atoms or hydrogen; and R3 is a hydrocarbon group with 1 to 12 carbon atoms) RNSi(OR1)3Formula 38 (where in Formula 38, R1 is a hydrocarbon group with 1 to 6 carbon atoms; and RN is a cyclicl amino group).Type: GrantFiled: August 19, 2003Date of Patent: July 3, 2007Assignee: Ube Industries, Ltd.Inventors: Motozo Yoshikiyo, Toshifumi Fukunaga, Hiroshi Sato, Toshikazu Machida, Hiroyuki Ikeuchi, Takefumi Yano, Yasuhiro Tanaka