Formosa Plastics Corporation, U.s.a.

Formosa Plastics Corporation

Formosa Plastic Corporation, U.s.a.

Gapgoung Kong

Chih-Jian Chen

Lei Zhang

Honglan Lu

Demin Xu

Yiqun Fang

Zhongyang Liu

Guangxue Xu

Cyrus C Y Lee

Min-Chi Hsieh

Sun Chueh Kao

The present invention provides phthalate free impact resistant polypropylene copolymer and methods of preparation, which are produced directly from the polymerization reactor system without further compounding of components which significantly alters the physical properties of the resulting polymer. The copolymer according to the present invention possesses both low temperature ductility and high flexural modulus, wherein said polymer is produced in the presence of a phthalate free ZN catalyst comprising urea component.

High ductility, high modulus and phthalate free impact resistant propylene copolymer

Disclosed are a catalyst component for olefin polymerization comprising titanium, magnesium, a halogen, internal donors, in combination with a silane and oxalic acid diamides of the following formula: An olefin polymerization catalyst system consisting of the solid catalyst component, an organoaluminum compound, and an optional external electron donor compound is also disclosed. Employment of both oxalic acid diamides and silane component in the presence of internal electron donors as an elements of solid Ziegler-Natta type catalyst composition enhances stereo-specificity while maintaining excellent catalyst activity and hydrogen response, in which the modified catalyst composition produces polypropylene with good productivity and higher stereo-specificity than catalyst composition without such modification.

Catalyst system for enhanced stereo-specificity of olefin polymerization and method for producing olefin polymer

The present invention relates to a Ziegler-Natta catalyst component for olefin polymerization containing an amide element in combination with one or more internal electron donors. The catalyst components, according to the present invention, are able to produce polypropylene polymers with higher stereo-regularity. The present invention also provides a phthalate-free catalyst system capable of producing polypropylene with an isotacticity that is equal to or higher than catalyst systems containing phthalate derivatives.

Olefin polymerization catalyst components and process for the production of olefin polymers therewith

The present invention relates to a Ziegler-Natta catalyst component for olefin polymerization containing a urea element in combination with one or more internal electron donors. The catalyst components are able to produce polypropylene polymers with higher stereo-regularity. The present invention also provides phthalate-free catalyst system capable of producing polypropylene with an isotacticity that is equal to or higher than catalyst systems containing phthalate derivatives.

A phthalate-free catalyst component for olefin polymerization comprising titanium, magnesium, a halogen, diether, and oxalic acid diamides represented by the following formula (I): and an olefin polymerization catalyst system consisting of the solid catalyst component, an organoaluminum compound, and an optional external electron donor compound. The present catalyst compositions improve diether-based catalyst selectivity while maintaining excellent catalyst activity and hydrogen response. An olefin polymer that has a moderate molecular weight distribution while maintaining higher stereoregularity (isotacticity) over diether-based catalyst, and better than or equal to phthalate-based catalyst can be produced by utilizing the inventive catalyst component.

Catalyst system for olefin polymerization and method for producing olefin polymer

The present invention relates to the use of oxalic acid diamides as modifiers in conjunction with solid Ziegler-Natta type catalyst in processes in which polyolefins such as polypropylene are produced. The modified catalyst compositions produce polypropylene with good productivity and higher sterospecificity than systems without such modification.

Oxalic acid diamides as modifiers for polyolefin catalysts

A process for synthesizing a catalyst component for manufacturing ethylene polymer and co-polymer. The present invention provides a process for synthesizing catalyst component (A), comprising forming a complex by contacting the solid intermediate (B) with an aluminum compound represented by formula XAl(OY), and alkyl metal (C), wherein X is halide, Y is a hydrocarbon group or chelating carbonyl group, and wherein 1 is less than or equal to n which is less than or equal to 3, and then contacting the complex with titanium halide having formula TiXwherein X is halide. Solid intermediate (B) is formed by reacting magnesium metal with alkyl halide in the presence of alkoxy aluminum represented by formula Al(OR), silicon halide represented by formula SiXand alkoxy silane represented by formula Si(OR), wherein Rand Rare an aromatic or aliphatic alkyl group and wherein X is halide. Alkyl metal (C) is synthesized by reacting alkyl aluminum compounds represented by formula AlRwith a secondary amine having formula HNRand then by reacting with alkyl magnesium compounds represented by formula RMgR, wherein R, R, Re and Rare an aromatic or aliphatic alkyl group. The catalyst component is suitable for producing ethylene polymer and co-polymer with narrow molecular weight distribution as well as improved branching compositional distribution.

Catalyst system for producing ethylene (co) polymer with improved branch distribution

A magnesium halide support material for a polyolefin catalysts is disclosed. The magnesium halide of present invention is prepared by reacting magnesium with an alkylhalide in a non-polar hydrocarbon solvent. Preparation of the support does not require the use electron donating solvents and therefore does not require extensive washing to remove the solvent from the support.

Preparation of a magnesium halide support for olefin polymerization and a catalyst composition using the same

A catalyst system for (co)-polymerizing ethylene or ethylene with &#x3b1;-olefin is disclosed. The catalyst system utilizes a catalyst component that contains the product of a reaction of an early transition metal complex such as a titanium alkoxide with a cyclic diene-containing compound such as indene. The catalyst system also utilizes a solid magnesium halide support and an alkylaluminum co-catalyst. The catalyst system of present invention produces polyethylene with a narrow molecular weight distribution and a narrow compositional distribution.

Catalyst system for ethylene (co)-polymerization

Disclosed is a new titanium based catalyst system for (co)-polymerizing ethylene or ethylene with alpha-olefin having 3 to 10 carbons. The catalyst is obtained by contacting a magnesium halide support with an aluminum compound and with a titanium halide compound and then treating the resulting solid with a magnesium-amide complex. The catalyst system is suitable for producing ethylene polymer and co-polymer with narrow molecular weight distribution as well as improved branching compositional distribution.

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Sugar Land, TX, United States of America

Gapgoung Kong