Chevron Phillips Chemical Company LP

Ineos Styrolution Group Gmbh

Chevron Philips Chemical Company, LP

Jinping Joe Zhou

Walter H Pace

David A Young

Max P McDaniel

Qing R Yang

Kathy S Clear

Eric D Schwerdtfeger

Carlos A Cruz

Zhihui Gu

Anand Ramanathan

David L Hartsock

Cliff C Pettey

Jay M Chaffin

Charlie Rees

Charles Rees

David Young

Fluorided silica-coated alumina activator-supports have a bulk density from 0.15 to 0.37 g/mL, a total pore volume from 0.85 to 2 mL/g, a BET surface area from 200 to 500 m/g, an average pore diameter from 10 to 25 nm, and from 80 to 99% of pore volume in pores with diameters of greater than 6 nm. Methods of making the fluorided silica-coated alumina activator-supports and using the fluorided silica-coated aluminas in catalyst compositions and olefin polymerization processes also are described. Representative ethylene-based polymers produced using the compositions and processes have a melt index of 0.1 to 10 g/10 min and a density of 0.91 to 0.96 g/cm, and contain from 70 to 270 ppm solid oxide and from 2 to 18 ppm fluorine.

High porosity fluorided silica-coated alumina activator-supports and uses thereof in metallocene-based catalyst systems for olefin polymerization

Fluorided silica-coated alumina activator-supports have a bulk density from 0.15 to g/mL, a total pore volume from 0.85 to 2 mL/g, a BET surface area from 200 to 500 m/g, an average pore diameter from 10 to 25 nm, and from 80 to 99% of pore volume in pores with diameters of greater than 6 nm. Methods of making the fluorided silica-coated alumina activator-supports and using the fluorided silica-coated aluminas in catalyst compositions and olefin polymerization processes also are described. Representative ethylene-based polymers produced using the compositions and processes have a melt index of 0.1 to 10 g/10 min and a density of 0.91 to 0.96 g/cm, and contain from 70 to 270 ppm solid oxide and from 2 to 18 ppm fluorine.

Conjugated diene monovinylarene block copolymers containing an internal conjugated diene block and having superior kink resistance properties are disclosed. These copolymers can be used to produce tubing and other end-use articles, and can be a replacement for flexible PVC.

Styrene-butadiene block copolymers with an internal butadiene block for tubing applications

Polymer compositions containing conjugated diene monovinylarene block copolymers and styrenic thermoplastic elastomers are disclosed. These compositions can be used to produce tubing having superior kink resistance properties, and can be a replacement for flexible PVC in various end-use applications, such as in sheet products, film products, tubing products, and adhesive products.

Blends of styrene-butadiene block copolymer with styrenic thermoplastic elastomers for tubing applications

Conjugated diene monovinylarene block copolymers containing a terminal conjugated diene end block and having superior kink resistance properties are disclosed. These copolymers can be used to produce tubing and other end-use articles, and can be a replacement for flexible PVC.

Styrene-butadiene block copolymers with a terminal butadiene block for tubing applications

Conjugated diene monovinylarene block copolymers having superior kink resistance properties are disclosed. These copolymers can be used to produce tubing and other end-use articles, and can be a replacement for flexible PVC.

Styrene-butadiene block copolymers for tubing applications

Disclosed are cold flow resistant and dimensionally stable compositions containing a diene rubber and a conjugated diene monovinylarene block copolymer, and generally, these compositions have solutions viscosities and cold flows that are less than that of the diene rubber. Methods for reducing cold flow and for storage-stabilizing bales of diene rubbers also are disclosed.

Cold flow resistant compositions containing rubber and a block copolymer

Methods for controlling properties of a conjugated diene monovinylarene block copolymer using a modifier during polymerization are disclosed. For instance, the Shore A hardness of the copolymer can be decreased via the addition of the modifier compound.

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Bartlesville, OK, United States of America

Jinping Joe Zhou