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Recent developments in olefin polymerizations with transition metal catalysts
Discovery of effective homogeneous transition metal catalysts for olefin polymerization must
be one of the most dramatic technologies for polymer synthesis in the 1980s. Especially …
be one of the most dramatic technologies for polymer synthesis in the 1980s. Especially …
A Comprehensive Review on Controlled Synthesis of Long‐Chain Branched Polyolefins: Part 1, Single Catalyst Systems
Polyolefins (POs) are the largest polymer product in the world. The innovation in converting
commodity olefin monomers to highly value added high‐performance POs has been and will …
commodity olefin monomers to highly value added high‐performance POs has been and will …
Dual metallocene catalysts for polymerization of bimodal polymers
Q Yang, KC Jayaratne, MD Jensen… - US Patent …, 2009 - Google Patents
This invention relates to catalyst compositions, methods, and polymers encompassing at
least one first Group 4 metal locene compound comprising bridging m-cyclopentadienyl type …
least one first Group 4 metal locene compound comprising bridging m-cyclopentadienyl type …
Acidic activator-supports and catalysts for olefin polymerization
MD Jensen, GR Hawley, MP McDaniel, T Crain… - US Patent …, 2007 - Google Patents
US7294599B2 - Acidic activator-supports and catalysts for olefin polymerization - Google
Patents US7294599B2 - Acidic activator-supports and catalysts for olefin polymerization …
Patents US7294599B2 - Acidic activator-supports and catalysts for olefin polymerization …
Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching
Q Yang, MD Jensen, JL Martin, MG Thorn… - US Patent …, 2009 - Google Patents
This invention relates to catalyst compositions, methods, and polymers encompassing at
least one Group 4 metallocene compound comprising bridging m-cyclopentadienyl-type …
least one Group 4 metallocene compound comprising bridging m-cyclopentadienyl-type …
Long-chain branching in metallocene-catalyzed polyethylenes investigated by low oscillatory shear and uniaxial extensional rheometry
A Malmberg, C Gabriel, T Steffl, H Münstedt… - …, 2002 - ACS Publications
This paper explores shear and extensional rheological behavior of unimodal, metallocene-
catalyzed polyethylenes with low contents of long-chain branching (LCB). The polymers …
catalyzed polyethylenes with low contents of long-chain branching (LCB). The polymers …
Synthesis and characterization of long chain branched isotactic polypropylene via metallocene catalyst and T-reagent
Long chain branched isotactic polypropylenes (LCBPP) prepared via the combination of rac-
Me2Si (2-Me-4-Ph-Ind) ZrCl2/MAO catalyst and ap-(3-butenyl) styrene (T-reagent) were …
Me2Si (2-Me-4-Ph-Ind) ZrCl2/MAO catalyst and ap-(3-butenyl) styrene (T-reagent) were …
Influence of type and content of various comonomers on long-chain branching of ethene/α-olefin copolymers
One polyethylene and nine ethene/α-olefin copolymers differing in amount (0.4− 2.9 mol%)
and molar mass of the comonomer were characterized by NMR, SEC-MALLS, and rheology …
and molar mass of the comonomer were characterized by NMR, SEC-MALLS, and rheology …
Triple-detector GPC characterization and processing behavior of long-chain-branched polyethylene prepared by solution polymerization with constrained geometry …
Fourteen long-chain branched (LCB) polyethylene (PE) samples were prepared by a
constrained geometry catalyst. The PE samples had average branching frequencies of 0.06 …
constrained geometry catalyst. The PE samples had average branching frequencies of 0.06 …
Dual metallocene catalysts for polymerization of bimodal polymers
Q Yang, KC Jayaratne, MD Jensen… - US Patent …, 2011 - Google Patents
This invention relates to catalyst compositions, methods, and polymers encompassing at
least one first Group 4 metal locene compound comprising bridging m-cyclopentadienyl type …
least one first Group 4 metal locene compound comprising bridging m-cyclopentadienyl type …