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7166676 |
Process for preparing copolymers and blend compositions containing the same
A process for the preparation of blends including an ethylene copolymer by copolymerizing ethylene and at least one comonomer selected from a compound represented by the formula H 2 C═CHR wherein...
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7153909 |
High density ethylene homopolymers and blend compositions
Blend compositions containing a novel homopolymer, the use of which allows the incorporation of more comonomer in the additional components of the blend (for the same overall density) resulting in...
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6846884 |
Control of resin properties
A method for controlling resin properties during the production of polyolefins is provided. The method utilizes coordinated manipulation of reaction temperature in combination with a secondary...
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6812289 |
Cast stretch film of interpolymer compositions
This invention relates to cast films prepared from interpolymer compositions comprising; (A) a substantially linear ethylene/α-olefin interpolymer present in the composition in an amount of from...
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6610408 |
TPO blends containing multimodal elastomers
Thermoplastic polyolefin blends having improved resistance to fluids such as petroleum fuels after being painted with flexible coatings such as polyurethanes paints and the like are disclosed....
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6451894 |
TPO blends containing multimodal elastomers
Molded articles of thermoplastic polyolefin blends having improved resistance to fluids such as petroleum fuels after being painted with flexible coatings such as polyurethane paints and the like...
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6420516 |
Finishing design to increase the polymer content in an olefin solution polymerization process
The polymer recovery capacity of solution polymerization units is increased by flashing a polymer solution exiting olefin polymerization reactors to produce a concentrated polymer solution having a...
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6130300 |
Low aluminum and magnesium Z-N solution catalysts
The present invention provides a Ziegler-Natta catalyst useful in solution processes for the polymerization of olefins having a low amount of aluminum and magnesium. The catalysts of the present...
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6084042 |
Mixed titanium-vanadium catalysts for solution ethylene polymerization
The present invention provides a Ziegler-Natta catalyst based on titanium and vanadium useful in solution processes for the polymerization of olefins having a low amount of aluminum and magnesium....
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5869575 |
Ethylene interpolymerizations
Processes for polymerizing ethylene/α-olefin interpolymer compositions are disclosed. The interpolymer compositions have a controlled composition and a controlled molecular weight distribution....
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5844045 |
Ethylene interpolymerizations
Processes for polymerizing ethylene/α-olefin interpolymer compositions are disclosed. The interpolymer compositions have a controlled composition and a controlled molecular weight distribution....
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5792534 |
Polyolefin film exhibiting heat resistivity, low hexane extractives and controlled modulus
The subject invention provides a polymer mixture having high heat resistivity, low hexane extractive and controllably lower or higher modulus. The mixture is comprised of at least one first...
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5773106 |
Polyolefin compositions exhibiting heat resistivity, low hexane-extractives and controlled modulus
The subject invention provides a polymer mixture having high heat resistivity, low hexane extractive and controllably lower or higher modulus. The mixture is comprised of at least one first...
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5747594 |
Polyolefin compositions exhibiting heat resistivity, low hexane-extractives and controlled modulus
The subject invention provides a polymer mixture having high heat resistivity, low hexane extractive and controllably lower or higher modulus. The mixture is comprised of at least one first...
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5015511 |
Linear low density ethylene interpolymers for injection molding
Improved injection-molded LLDPE articles, especially those having a wall thickness in the range of about 0.15 mm to as much as 1.5 mm, are prepared using an LLDPE containing a sufficient amount of...
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4673662 |
Catalysts for the polymerization and copolymerization of propylene and polymerization processes using these catalysts
The present invention relates to catalysts which can be used for the polymerization and copolymerization of propylene with other alpha-olefins, characterized in that they comprise a support...
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4657882 |
Supported olefin polymerization catalyst produced from a magnesium alkyl/organophosphoryl complex
A solid hydrocarbon-insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics, comprises the product formed by (a)...
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4612300 |
Novel catalyst for producing relatively narrow molecular weight distribution olefin polymers
Polymers of α-olefins having a relatively narrow molecular weight distribution are prepared by employing a Ziegler-Natta magnesium halide supported catalyst containing both titanium and vanadium.
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4581342 |
Supported olefin polymerization catalyst
A solid-hydrocarbon insoluble, alpha-olefin polymerization catalyst component with superior activity, stereospecificity and morphology characteristics, comprises the product formed by (a)...
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4547475 |
Magnesium halide catalyst support and transition metal catalyst prepared thereon
An improved magnesium halide catalyst support is prepared by combining a magnesium component represented by the general formula R 2 Mg.xAlR' 3 wherein R is a hydrocarbyl or a hydrocarbyloxy...
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4536484 |
Process for preparation of a transition metal component for a catalytic system of polymerization of olefins
A process for preparation of a transition metal component of a catalytic system for the polymerization of olefins, wherein an organo-magnesium-aluminum reaction product is formed by bringing into...
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4511703 |
Catalysts for the polymerization and copolymerization of propylene and polymerization processes using these catalysts
The present invention relates to catalysts which can be used for the polymerization and copolymerization of propylene with other alpha-olefins, characterized in that they comprise a support...
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4497904 |
Catalysts for the polymerization and copolymerization of ethylene and polymerization processes using these catalysts
The present invention relates to catalysts for the polymerization and copolymerization of ethylene, characterized in that they comprise a support based on magnesium chloride and possibly on...
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4490475 |
Process for the preparation of supports based on magnesium chloride for the preparation of catalysts for the polymerization of alpha-olefins and the supports obtained
The present invention relates to catalyst supports for the polymerization and co-polymerization of alpha-olefins, especially ethylene and propylene, consisting essentially of magnesium chloride,...
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4487846 |
Process for the preparation of catalyst supports for the polymerization of alpha-olefins and the supports obtained
The present invention relates to catalyst supports for the polymerization and co-polymerization of alpha-olefins, especially ethylene and propylene, consisting essentially of magnesium chloride,...
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4478952 |
Supported catalyst for olefin polymerization
A method for the preparation of supported Ziegler-Natta catalysts comprising contacting a transition metal alkoxide and/or siloxide compound with a magnesium-containing reagent. The magnesium...
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4380508 |
Ultra high efficiency catalyst for polymerizing olefins
Compositions consisting of the reaction product or complex resulting from the mixing of (1) a mixture of a transition metal compound such as a tetraalkoxy titanium compound with a non-metallic...
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