Ribour
David Ribour, Houston, TX US
Patent application number | Description | Published |
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20100125124 | Methods of catalyst activation - A method comprising preparing a multi-component catalyst system comprising a catalyst and a cocatalyst, and adjusting the level of at least one component of the catalyst system to maintain a user-desired level of catalyst activity throughout a process, wherein the component comprises a catalyst activator and wherein the catalyst activator comprises the catalyst or the cocatalyst. A method comprising contacting a polymerization catalyst system comprising a Ziegler-Natta catalyst and a cocatalyst with a catalyst activator at least twice during a polymerization process, wherein the polymerization process is carried out in a reactor system comprising multiple reactor types. | 05-20-2010 |
20100227986 | Methods of Catalyst Activation - A method comprising preparing a multi-component catalyst system comprising a catalyst and a cocatalyst, and adjusting the level of at least one component of the catalyst system to maintain a user-desired level of catalyst activity throughout a process, wherein the component comprises a catalyst activator and wherein the catalyst activator comprises the catalyst or the cocatalyst. A method comprising contacting a polymerization catalyst system comprising a Ziegler-Natta catalyst and a cocatalyst with a catalyst activator at least twice during a polymerization process, wherein the polymerization process is carried out in a reactor system comprising multiple reactor types. | 09-09-2010 |
David Ribour, Lyon FR
Patent application number | Description | Published |
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20100029468 | Controlled Distribution of Active Sites in Ziegler-Natta Catalyst Systems - The present invention provides a method for improving and controlling the activity of Ziegler-Natta catalyst systems. | 02-04-2010 |
20100056736 | Controlled Distribution of Stereospecific Sites in Ziegler-Natta Catalyst Systems - This invention relates to an improved method for improving the tacticity of Ziegler-Natta catalyst systems and for controlling the behaviour of the active stereospecific sites. | 03-04-2010 |
20120149858 | Controlled Distribution of Active Sites in Ziegler-Natta Catalyst Systems - The present invention provides a method for improving and controlling the activity of Ziegler-Natta catalyst systems. | 06-14-2012 |
David Ribour, Mairieux FR
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20140249264 | HIGH-FLUIDITY HETEROPHASIC PROPYLENE COPOLYMER WITH IMPROVED RIGIDITY - Heterophasic propylene copolymers can include a matrix phase and a dispersed phase. The heterophasic propylene copolymers can be characterized by good processability and good mechanical properties, particularly an improved rigidity. The heterophasic propylene copolymers can be well-suited for injection molding applications, particularly for injection molding of thin-walled articles. | 09-04-2014 |
David Ribour, Mons BE
Patent application number | Description | Published |
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20140371397 | HIGH-DENSITY POLYETHYLENE FOR CAPS AND CLOSURES - A high-density polyethylene (HDPE) can be adapted for the manufacture of caps and closures. The caps and closures can be used as screw-on caps for carbonated or still drinks. The high-density polyethylene can have a density of at least 940 kg/m | 12-18-2014 |