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Stevens James C, Vanderlende Daniel D, Chang Andy C: Isotactic propylene copolymer fibers, their preparation and use. Dow Global Technologies, Stevens James C, Vanderlende Daniel D, Chang Andy C, PLOTECHER Gary R, May 15, 2003: WO/2003/040442 (1 worldwide citation)

Fibers comprising a propylene homopolymer or a copolymer of propylene and at least one of ethylene and one or more unsaturated comonomers exhibit desirable properties. The homopolymers are characterized as having ?13¿C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the pe ...


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BEIGZADEH DARYOOSH , CAMPBELL JR RICHARD E , DEVORE DAVID D , ROMER DUANE R , STEVENS JAMES C , TIMMERS FRANCIS J , TUINSTRA HENDRIK E , VOSEJPKA PAUL C : [de] VERFAHREN ZUR OLEFINPOLYMERISATION UNTER VERWENDUNG EINES MODIFIKATORS, [en] OLEFIN POLYMERIZATION PROCESS USING A MODIFIER, [fr] PROCÉDÉ DE POLYMÉRISATION DOLÉFINE EMPLOYANT UN MODIFICATEUR. DOW GLOBAL TECHNOLOGIES  , April 20, 2016: EP3009459-A1

[en] A process for the copolymerization of ethylene and 1-octene to form a copolymer by contacting a mixture comprising ethylene and 1-octene under polymerization conditions with a catalyst composition comprising a metal complex, a cocatalyst and a polymerization modifier, characterized in that, the ...


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Timmers Francis J, Devore David D, Stevens James C, Rosen Robert K, Patton Jasson T, Neithamer David R: Biscyclopentadienyl diene complexes, their preparation and catalyst compositions containing them. Dow Chemical, May 12, 1999: EP0915098-A2

Biscyclopentadienyl, Group 4 transition metal complexes are formed by contacting a biscyclopentadienyl Group 4 metal halide, hydrocarbyl, hydrocarbyloxy or amide complex with a conjugated diene. When combined with standard activating cocatalysts or activated with an activating technique, the complex ...


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BEIGZADEH DARYOOSH, CAMPBELL JR RICHARD E, DEVORE DAVID D, ROMER DUANE R, STEVENS JAMES C, TIMMERS FRANCIS J, TUINSTRA HENDRIK E, VOSEJPKA PAUL C: Technique for selecting polymerization modifiers, Verfahren zur Auswahl von Polymerisationsmodifikatoren, Technique de sélection de modificateurs de polymérisation. Dow Global Technologies, July 20, 2011: EP2345677-A2

The copolymerization of an olefin with styrene or of ethylene with propylene or with 1-octene is conducted using catalyst compositions comprising a combination of (i) transition metal complex (ii) a co-catalyst and a (iii) polymerization modifier that has been identified by combinatorial analysis to ...


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Stevens James C, Neithamer David R: Metal complex compounds, process for preparation and method of use. Dow Chemical, April 2, 1997: EP0765882-A2

A monocyclopentadienyl or substituted monocyclopentadienyl metal complex containing compound useful as an addition polymerization catalyst corresponds to the formula: CpMXnA wherein: Cp is a single eta -cyclopentadienyl or eta -substituted cyclopentadienyl group optionally covalently bonded to M thr ...


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Stevens James C, Vanderlende Daniel D, Chang Andy C: Isotactic propylene homopolymer fibers and use. Dow Global Technologies, November 22, 2006: EP1724379-A1

A fiber comprising an isotactic propylene homopolymer characterized as having 13 CNMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal intensity.


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Wilson David E, Stevens James C: Process for hydrogenation of polymers.. Dow Chemical, November 14, 1990: EP0397026-A1

Ethylenically unsaturated polymers are hydrogenated by contacting the polymers with bis(alkyl substituted cyclopentadienyl) lanthanide catalysts. It is known to use these catalysts in the polymerization of olefins and also in the hydrogenation of simple olefins. However, it is also known that not al ...


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