Patent classifications
C08F4/64189
Supported Catalyst Systems and Methods of Using Same
This invention relates to a catalyst system including the reaction product of a support (such as a fluorided silica support that preferably has not been calcined at a temperature of 400° C. or more), an activator and at least two different transition metal catalyst compounds; methods of making such catalyst systems, polymerization processes using such catalyst systems and polymers made therefrom.
C1,C2-bridged ligands and catalysts
The present disclosure provides catalyst compounds including a nonsymmetric bridged amine bis(phenolate), catalyst systems including such, and uses thereof. Catalyst compounds, catalyst systems, and processes of the present disclosure can provide high comonomer content and high molecular weight polymers having narrow Mw/Mn values, contributing to good processability for the polymer itself and for the polymer used in a composition.
Catalyst systems comprising activator, polymerization processes using same, and products made therefrom
This invention relates to a polymerization catalyst system comprising group 8 or 9 containing non-coordinating anion activator, a polymerization catalyst compound, optional support, and optional scavenger. Preferably, the activator comprises a compound represented by the formula: H.sub.s(L).sub.mM where M is a group 8 or 9 metal, s is 0 or 1, m 1, 2, 3, or 4, each L ligand is independently C≡O, NR.sub.3, PR.sub.3, where each R, independently is halogen, haloalkyl, or haloaryl) or optionally two or more L ligands may together form a multiply-valent ligand complex. Further, this invention relates to anon-coordinating anion activator represented by the formula: [Z.sub.d].sup.+[H.sub.sL.sub.mM].sup.d−, where M, s, m, L, are as defined above, d is 1, 2, or 3 and Z is (L′-H) or a reducible Lewis acid; L′ is a neutral Lewis base; H is hydrogen, and (L′-H) is a Bronsted acid. This invention also relates to a process for making a polymeric product comprising contacting a C2-C40 alpha-olefin feed with the polymerization catalyst system to obtain a polymerization reaction mixture; and obtaining a polymer product from the polymerization reaction mixture.
Catalyst systems comprising activator, polymerization processes using same, and products made therefrom
This invention relates to a polymerization catalyst system comprising group 8 or 9 containing non-coordinating anion activator, a polymerization catalyst compound, optional support, and optional scavenger. Preferably, the activator comprises a compound represented by the formula: H.sub.s(L).sub.mM where M is a group 8 or 9 metal, s is 0 or 1, m 1, 2, 3, or 4, each L ligand is independently C≡O, NR.sub.3, PR.sub.3, where each R, independently is halogen, haloalkyl, or haloaryl) or optionally two or more L ligands may together form a multiply-valent ligand complex. Further, this invention relates to anon-coordinating anion activator represented by the formula: [Z.sub.d].sup.+[H.sub.sL.sub.mM].sup.d−, where M, s, m, L, are as defined above, d is 1, 2, or 3 and Z is (L′-H) or a reducible Lewis acid; L′ is a neutral Lewis base; H is hydrogen, and (L′-H) is a Bronsted acid. This invention also relates to a process for making a polymeric product comprising contacting a C2-C40 alpha-olefin feed with the polymerization catalyst system to obtain a polymerization reaction mixture; and obtaining a polymer product from the polymerization reaction mixture.
Polyolefin compositions
A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.
Polyolefin compositions
A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.
Metallocene-catalyzed polyalpha-olefins
Unsaturated and hydrogenated polyalpha-olefin products can be made with a high selectivity toward vinylidenes and tri-substituted vinylenes combined, a high selectivity toward vinylidenes, and a low selectivity toward 1,2-di-substituted vinylenes by using a catalyst system comprising a metallocene compound having the following structure in the polymerization reaction: ##STR00001##
Metallocene-catalyzed polyalpha-olefins
Unsaturated and hydrogenated polyalpha-olefin products can be made with a high selectivity toward vinylidenes and tri-substituted vinylenes combined, a high selectivity toward vinylidenes, and a low selectivity toward 1,2-di-substituted vinylenes by using a catalyst system comprising a metallocene compound having the following structure in the polymerization reaction: ##STR00001##
Catalyst Systems Including Salan Catalyst and Non-Coordinating Anion Type Activator Containing Cation Having Alkyl Groups and uses Thereof
The present disclosure provides a catalyst system having a salan catalyst compound and borate or aluminate activators comprising cations having alkyl groups and methods for polymerizing olefins using such catalyst systems. In still another embodiment, the present disclosure provides a polymerization process comprising a) contacting one or more olefin monomers with a catalyst system comprising: i) an activator as described herein, ii) a catalyst compound as described herein, and iii) optional support.
Catalyst Systems Including Salan Catalyst and Non-Coordinating Anion Type Activator Containing Cation Having Alkyl Groups and uses Thereof
The present disclosure provides a catalyst system having a salan catalyst compound and borate or aluminate activators comprising cations having alkyl groups and methods for polymerizing olefins using such catalyst systems. In still another embodiment, the present disclosure provides a polymerization process comprising a) contacting one or more olefin monomers with a catalyst system comprising: i) an activator as described herein, ii) a catalyst compound as described herein, and iii) optional support.