61
Stevens James C, Neithamer David R: Composes complexes, metalliques; procede de fabrication et methode dutilisation, Metal complex compounds, process for preparation and method of use. The Dow Chemical Company, The Dow Chemical Company, SMART & BIGGAR, December 4, 2001: CA2025332

A monocyclopentadienyl or substitutedmonocyclopentadienyl metal complex containing compounduseful as an addition polymerization catalystcorresponds to the formula: CpMX n+ A-wherein: Cp is a single ~5-cyclopentadienyl or ~5-substituted cyclopentadienyl group optionally covalentlybanded to M through ...


62
Frazier Kevin A, Vosejpka Paul A, Boone Harold W, Stevens James C: High activity olefin polymerization catalyst and process. Dow Global Technologies, February 8, 2006: EP1622947-A1

Group 4 metal complexes useful as addition polymerization catalysts of the formula: Gis a group containing from 1 to 40 atoms not counting hydrogen; T is a divalent bridging group of from 10 to 30 atoms not counting hydrogen, selected from mono- or di-aryl-substituted methylene or silylene groups or ...


63
Stevens James C, Vanderlende Daneil D: Polypropylene solution polymerization process. Dow Global Technologies, February 11, 2009: EP2021378-A2

A process for polymerization of propylene, optionally ethylene, and further optionally one or more C4-30 a-olefins and/or one or more conjugated or nonconjugated dienes under continuous, solution polymerization conditions to prepare a high molecular weight polymer or interpolymer, said process compr ...


64
Konze Wayde V, Stevens James C, Vanderlende Daniel D: High efficiency solution polymerization process. Dow Global Technologies, February 18, 2009: EP2024400-A2

A process for polymerization of propylene, optionally ethylene, and further optionally one or more C4-30 a-olefins and/or one or more conjugated or nonconjugated dienes under continuous, solution polymerization conditions to prepare a high molecular weight polymer or interpolymer, said process compr ...


65

66
Carnahan Edmund M, Chen Eugene Y, Jacobsen Grant B, Stevens James C: Modified alumoxane catalyst activator. Dow Chemical, July 19, 2000: EP1019415-A1

A catalyst activator particularly adapted for use in the activation of metal complexes of metals of Group 3-10 for polymerization of ethylenically unsaturated polymerizable monomers, especially olefins, comprising: a composition comprising a mixture of aluminum containing Lewis acids said mixture co ...


67
Stevens James C, Vanderlende Daniel D: Isotactic propylene copolymers, their preparation and use. Dow Global Technologies, August 11, 2004: EP1444276-A1

Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) <13?C NMR peaks corresponding to a regio-error at about 14.6 and about 15.7 ppm, the peaks of about equal i ...


68
Arriola Daniel J, Carnahan Edmund M, Cheung Yunwa W, Devore David D, Graf David D, Hustad Phillip D, Kuhlman Roger L, Li Pi Shan Colin, Poon Benjamin C, Roof Gordon R, Stevens James C, Stirn Pamela J, Wenzel Timothy T: Catalyst composition comprising shuttling agent for ethylene multi-block copolymer formation. Dow Global Technologies, December 6, 2006: EP1727841-A2

A composition for use in forming a multi-block copolymer from a single polymerizable monomer, said copolymer containing therein two or more segments or blocks differing in branching index, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admi ...


69
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 cross reference statement. Dow Global Technologies, March 21, 2007: EP1763542-A2

A combinatorial method for identifying a catalyst composition for use in the homogeneous addition polymerization of an olefin monomers, said catalyst composition comprising a transition metal compound, a cocatalyst and a polymerization modifier, as well as catalyst compositions and improved olefin p ...


70
Howard James J, Baldwin Bernard A, Stevens James C, Zornes David R, Graue Arne, Kvamme Bjorn: Production of free gas by gas hydrate conversion. Conocophillips Co, Graue Arne, Kvamme Bjorn, July 18, 2007: EP1807604-A2

A method for releasing gas from a gas hydrate without melting the gas hydrate by substituting the gas with a releasing agent that forms a more stable hydrate structure than the gas.