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61. 发明专利

AT335784T 未知
公开(公告)号：AT335784T
公开(公告)日：2006-09-15
申请号：AT02739472
申请日：2002-05-29
申请人： EXXONMOBIL CHEM PATENTS INC
发明人： DIAS ANTHONY J , TSOU ANDY H , CHUNG DAVID Y , WENG WEIQING
IPC分类号： B60C5/14 , C08K3/00 , C08K3/34 , C08K5/17 , C08L21/00 , C08L23/22 , C08L23/28 , C08L101/00
摘要： The present invention includes blends of a halogenated elastomer such as a butyl rubber or an interpolymer of, on one embodiment, a C4 to C7 isomonoolefin, a para-methylstyrene and a para-(halomethylstyrene), the interpolymer having been pre-mixed with an exfoliating compound and clay, the entire blend forming a nanocomposite in one embodiment. The clay may or may not have undergone an additional exfoliating treatment prior to blending with the halogenated elastomer. The interpolymer/clay mixture forms a distinct phase in the nanocomposite blend of the invention. The blend of the invention has improved air barrier properties and is suitable as an air barrier.

62. 发明专利

CA2572906A1 POLYMERIC NANOCOMPOSITES AND PROCESSES FOR MAKING THE SAME 未知
公开(公告)号：CA2572906A1
公开(公告)日：2006-08-17
申请号：CA2572906
申请日：2005-06-28
申请人： EXXONMOBIL CHEM PATENTS INC
发明人： AYERS JAMES R , KARP KRISS R , JOHNSTON MOLLY W , POOLE BEVERLY J , NEAGU CARMEN , GONG CAIGUO , DIAS ANTHONY J , WENG WEIQING
IPC分类号： C08J3/205 , C08K3/00 , C08L23/20 , C08L25/16 , C08L27/10 , C08L47/00

63. 发明专利

DE60019637D1 未知
公开(公告)号：DE60019637D1
公开(公告)日：2005-05-25
申请号：DE60019637
申请日：2000-12-08
申请人： EXXONMOBIL CHEM PATENTS INC
发明人： WENG WEIQING , MARKEL J , CHANG MAIN , DEKMEZIAN H
IPC分类号： C08F4/659 , C08F4/642 , C08F4/6592 , C08F210/00 , C08F210/06 , C08F210/18
摘要： A method of lowering MFR response of a high melt flow rate polymer producing metallocene catalyst is provided. The method includes contacting the metallocene catalyst with a sufficient quantity of alpha,omega-diene monomer such that when the catalyst composition is contacted with polymerizable reactants under suitable polymerization conditions, the resulting polymer has an MFR rate in the range of 0.1 to 19. Hydrogen and ethylene may also be present in the polymerization. Additionally a catalyst composition is provided which includes a high melt flow rate polymer producing metallocene catalyst and a sufficient quantity of alpha,omega-diene monomers such that when the catalyst composition is contacted with a monomer under polymerization conditions, the resulting polymer has an MFR rate in the range of 0.1 to 19.

64. 发明专利

ES2187005T3 未知
公开(公告)号：ES2187005T3
公开(公告)日：2003-05-16
申请号：ES98906372
申请日：1998-02-06
申请人： EXXONMOBIL CHEM PATENTS INC
发明人： WENG WEIQING , DEKMEZIAN ARMEN H , MARKEL ERIC J , GADKARI AVINASH CHANDRAKANT , DEKONINCK JEAN-MARC
IPC分类号： C08F2/08 , C08F4/64 , C08F10/06 , C08F110/02 , C08F210/18 , C08F255/00 , C08F255/02 , C08F257/02 , C08F290/00 , C08F290/04 , C08F297/08 , C08L23/02 , C08L23/08 , C08L51/06 , C08L55/00
摘要： A polyolefin product is provided which comprises a branched olefin copolymer having an syndiotactic polypropylene backbone, polyethylene branches and, optionally, one or more comonomers. The total comonomer content of the branched olefin copolymer is from 0 to 20 mole percent. Also, the mass ratio of the syndiotactic polypropylene to the polyethylene ranges from 99.9:0.1 to 50:50. Additionally, a process is provided for preparing a branched olefin copolymer which comprises:a) copolymerizing ethylene, optionally with one or more copolymerizable monomers, in a polymerization reaction under conditions sufficient to form copolymer having greater than 40% chain end-group unsaturation;b) copolymerizing the product of a) with propylene and, optionally, one or more copolymerizable monomers, in a polymerization reactor under suitable polypropylene polymerization conditions using a chiral, stereorigid transition metal catalyst capable of producing syndiotactic polypropylene; andc) recovering a branched olefin copolymer.

65. 发明专利

DE69808243T2 未知
公开(公告)号：DE69808243T2
公开(公告)日：2003-05-08
申请号：DE69808243
申请日：1998-02-06
申请人： EXXONMOBIL CHEM PATENTS INC
发明人： MARKEL J , WENG WEIQING , DEKMEZIAN H , PEACOCK J
IPC分类号： C08F2/08 , C08F4/64 , C08F10/06 , C08F110/02 , C08F210/18 , C08F255/00 , C08F255/02 , C08F257/02 , C08F290/00 , C08F290/04 , C08F297/08 , C08L23/02 , C08L23/08 , C08L51/06 , C08L55/00
摘要： A polyolefin product is provided which comprises a branched olefin copolymer having an syndiotactic polypropylene backbone, polyethylene branches and, optionally, one or more comonomers. The total comonomer content of the branched olefin copolymer is from 0 to 20 mole percent. Also, the mass ratio of the syndiotactic polypropylene to the polyethylene ranges from 99.9:0.1 to 50:50. Additionally, a process is provided for preparing a branched olefin copolymer which comprises:a) copolymerizing ethylene, optionally with one or more copolymerizable monomers, in a polymerization reaction under conditions sufficient to form copolymer having greater than 40% chain end-group unsaturation;b) copolymerizing the product of a) with propylene and, optionally, one or more copolymerizable monomers, in a polymerization reactor under suitable polypropylene polymerization conditions using a chiral, stereorigid transition metal catalyst capable of producing syndiotactic polypropylene; andc) recovering a branched olefin copolymer.

66. 发明专利

DE69808243D1 未知
公开(公告)号：DE69808243D1
公开(公告)日：2002-10-31
申请号：DE69808243
申请日：1998-02-06
申请人： EXXONMOBIL CHEM PATENTS INC
发明人： MARKEL J , WENG WEIQING , DEKMEZIAN H , PEACOCK J
IPC分类号： C08F2/08 , C08F4/64 , C08F10/06 , C08F110/02 , C08F210/18 , C08F255/00 , C08F255/02 , C08F257/02 , C08F290/00 , C08F290/04 , C08F297/08 , C08L23/02 , C08L23/08 , C08L51/06 , C08L55/00
摘要： A polyolefin product is provided which comprises a branched olefin copolymer having an syndiotactic polypropylene backbone, polyethylene branches and, optionally, one or more comonomers. The total comonomer content of the branched olefin copolymer is from 0 to 20 mole percent. Also, the mass ratio of the syndiotactic polypropylene to the polyethylene ranges from 99.9:0.1 to 50:50. Additionally, a process is provided for preparing a branched olefin copolymer which comprises:a) copolymerizing ethylene, optionally with one or more copolymerizable monomers, in a polymerization reaction under conditions sufficient to form copolymer having greater than 40% chain end-group unsaturation;b) copolymerizing the product of a) with propylene and, optionally, one or more copolymerizable monomers, in a polymerization reactor under suitable polypropylene polymerization conditions using a chiral, stereorigid transition metal catalyst capable of producing syndiotactic polypropylene; andc) recovering a branched olefin copolymer.

67. 发明专利

BR9916426A 未知
公开(公告)号：BR9916426A
公开(公告)日：2001-09-04
申请号：BR9916426
申请日：1999-12-15
申请人： EXXONMOBIL CHEM PATENTS INC
发明人： MARKEL ERIC J , WENG WEIQING , DEKMEZIAN ARMENAG H
IPC分类号： C08F4/642 , C08F4/659 , C08F4/6592 , C08F10/06 , C08F210/06 , C08F210/16
摘要： Branched ethylene-propylene compositions which have improved melt strength and shear thinning are provided. The weight average branching index g' for the higher molecular weight region of the ethylene-propylene composition is less than 0.95. Additionally, a novel process is provided for efficiently producing a branched ethylene-propylene composition comprising: a) contacting propylene monomers and ethylene monomers in a reactor with an inert hydrocarbon solvent or diluent and a catalyst composition comprising one or more single site catalyst compounds capable of producing an ethylene-propylene polymer at a temperature from about 50° C. to about 180° C., wherein the ratio in the reactor of the propylene and ethylene monomers to the inert hydrocarbon solvent or diluent is less than 2.0, and further, wherein the propylene and ethylene monomers and the inert hydrocarbon solvent or diluent comprise no more than 90 percent of the total contents of the reactor; and b) recovering a branched ethylene-propylene composition, wherein the weight average branching index g' for the higher molecular weight region of the ethylene-propylene composition is less than 0.95.

68. 发明专利

BR9913647A 未知
公开(公告)号：BR9913647A
公开(公告)日：2001-06-05
申请号：BR9913647
申请日：1999-08-16
申请人： EXXONMOBIL CHEM PATENTS INC
发明人： WENG WEIQING , MARKEL ERIC J , DEKMEZIAN ARMENAG H , ARJUNAN PALANISAMY
IPC分类号： C08L23/00 , C08F2/06 , C08F4/645 , C08F4/659 , C08F10/06 , C08F110/06 , C08L23/10 , C08L23/12
摘要： Branched polypropylene compositions which have improved melt strength and good processability are provided. The branched polypropylene compositions of the present invention have a polydispersity of less than 4.0 and a melt point greater than 90° C. Further, the weight average branching index g of the polypropylene compositions is less than 0.95. Additionally, a novel process is provided for efficiently producing a branched polypropylene composition comprising:a) contacting propylene monomers in a reactor with an inert hydrocarbon solvent or diluent and a catalyst composition comprising one or more single site catalyst compounds capable of producing stereospecific polypropylene at a temperature from about 40° C. to about 120° C., wherein the ratio in the reactor of the propylene monomers to the inert hydrocarbon solvent or diluent is less than 9.0, and further, wherein the propylene monomers and the inert hydrocarbon solvent or diluent comprise at least 50 weight percent of the total contents of the reactor; andb) recovering a branched polypropylene composition having a polydispersity of less than or equal to 4.0 and a melting point greater than 90° C. wherein the weight average branching index, g, of the branched polypropylene composition is less than 0.95.

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