olefin polymerization components

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US5153158A - Solid catalyst components for olefin ...

The present invention relates to solid catalyst components for olefin polymerization formed by prepolymerizing at least two types of α-olefin on an olefin polymerization catalyst comprising a solid...

Structure–performance relationship in Ziegler–Natta olefin ...

Core-shell MgO/MgCl 2 /TiCl 4 catalysts as model Ziegler-Natta catalysts. First structure-performance relationship in Ziegler-Natta olefin polymerization. Single-crystal MgO core thinly covered by MgCl 2 /TiCl 4 catalytic components. The MgO/MgCl 2 /TiCl 4 catalysts were poreless and non-fragmentable. Proportional relation between surface area ...

Heterogenized Bifunctional Catalysts in Olefin Polymerization ...

Abstract. Investigation of the earlier developed bifunctional catalysts (BFC) which consist of the chromium containing ompounds or titanium-magnesium catalyst modified by nickel- (or zirconium-) aluminum oligodienyl complexes revealed that in the gas phase polymerization of ethylene two processes take place simultaneously - oligomerization of ethylene and its co-polymerization with the ...

FI Catalyst for Polymerization of Olefin | IntechOpen

However theoretical calculations on ethylene polymerization with a metallocene catalyst have provided clues about how to design highly active catalysts. Polymerization olefin catalyst components has been depicted in Figure 8 including a metal ligand(s) a growing polymer chain a coordinated olefin and a cocatalyst [40-42].

JP4602484B2 - Components and catalysts for olefin ...

polymerization solid catalyst Prior art date 1997-06-09 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number JP50148899A Other languages Japanese (ja) Other versions

JP4306807B2 - Olefin polymerization components and catalysts ...

Olefin polymerization components and catalysts Download PDF Info Publication number JP4306807B2. JP4306807B2 JP50148799A JP50148799A JP4306807B2 JP 4306807 B2 ...

Mechanism for Olefin Polymerization Essay - 1669 Words

Mechanism for Olefin Polymerization Chain Propagation: Cossee-Arlman Mechanism = good basic mechanism. Cossee et al. J. Catal. 1964 3 80 & 99. 12-

Transition metal compounds catalyst components and catalysts ...

A transition metal compound represented by the general formula (2) or (3) described below a catalyst component for olefin polymerization comprising said transition metal compound a catalyst component for olefin polymerization using said transition metal compound and (C) and/or (D) described below and a process for producing an olefinic polymer wherein olefins are homopolymerized or olefins ...

Olefin Polymerization - polymerdatabase.com

Stereospecific Catalytic Polymerization of α-Olefins α-olefins are often polymerized in the presence of stereospecific catalysts such as metallocenes or Ziegler-Natta catalysts . 1 These catalysts are able to restict the addition of monomer molecules to a specific regular orientation ( tacticity ).

Stabilized Vanadium Catalyst for Olefin Polymerization by ...

with prior heterogeneous vanadium catalysts for olefin polymerization[67] which could greatly inform mechanistic analysis and catalyst optimization. To evaluate ethylene polymerization both 1 and 2 were treated with ethylene under slurry phase conditions with modified methylaluminoxane-12 (MMAO-12) as acocatalyst (Table 3).

Olefin polymerization Ziegler-Natta catalyst components and ...

This invention relates (1) to Ziegler-Natta catalyst components for olefin polymerization employing specific forms of organosilicon compounds as an element of the solid catalyst composition in conjunction with one or more internal donor compounds (2) to methods of making such polymerization catalyst systems and (3) to polymerization processes for producing polyolefins particularly polypropylene that exhibit substantially higher stereo-regularity and activity.

Supporting information Polymerization Paramagnetic Metal ...

Paramagnetic Metal-hydrides: the Ti(III)-H in Homogeneous Olefin Polymerization Enrico Salvadoria Mario Chiesa*a Antonio Buonerbab Alfonso Grassib a Dr E. Salvadori Prof M. Chiesa Department of Chemistry University of Turin Via Pietro Giuria 7 Torino 10125 Italy E-mail: [email protected] b Dr A. Buonerba Prof A. Grassi

Polyolefin - Wikipedia

An alpha-olefin (or α-olefin) is an alkene where the carbon-carbon double bond starts at the α-carbon atom i.e. the double bond is between the #1 and #2 carbons in the molecule. Alpha-olefins such as 1-hexene may be used as co-monomers to give an alkyl branched polymer (see chemical structure below) although 1-decene is most commonly used ...

DK0553805T3 - Components and catalysts for polymerization of ...

Catalyst components for olefin polymerization WO2020069847A1 (en) 2018-10-01: 2020-04-09: Basell Poliolefine Italia S.R.L. Precursors and catalyst components for the polymerization of olefins...

Weakly Coordinating Al- Nb- Ta- Y- and La-Based ...

Weakly Coordinating Al- Nb- Ta- Y- and La-Based Perfluoroaryloxymetalate Anions as Cocatalyst Components for Single-Site Olefin Polymerization. Matthew V. Metz Yimin Sun Charlotte L. Stern and ; Tobin J. Marks

EP0135973A2 - Olefin polymerization catalyst components and ...

An olefin polymerization catalyst component is obtained by halogenating a magnesium compound of the formula MgR'R" wherein R'is an alkoxide or aryloxide group and R" is an alkoxide or aryl-oxide...

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olefin polymerization components