Class / Patent application number | Description | Number of patent applications / Date published |
502169000 | With metal halide | 8 |
20090036298 | Catalyst Components for the Polymerization of Olefins - Catalysts components for the polymerization of ethylene comprising Ti, Mg, halogen, OR | 02-05-2009 |
20090042720 | Activating supports for metallocene catalysis - The present invention relates to a process for preparing an activating support for metallocene complexes in the polymerisation of olefins comprising the steps of: I) providing a support prepared consisting in particles formed from at least one porous mineral oxide; II) optionally fixing the rate of silanols on the surface of the support; III) functionalising the support with a solution containing a fluorinated functionalising agent; IV) heating the functionalised and fluorinated support of step c) under an inert gas and then under oxygen; V) retrieving an active fluorinated support. That activating support is used to activate a metallocene catalyst component for the polymerisation of olefins. | 02-12-2009 |
20110218098 | Solid catalyst component for olefin polymerization, catalyst for olefin polymerization and process for producing olefin polymer - A solid catalyst component for olefin polymerization in which the molar ratio of residual alkoxy groups to supported titanium is 0.60 or less is obtained by reacting the following compound (a1) with the following compound (b1) at a hydroxyl group/magnesium molar ratio of 1.0 or more, reacting the reaction mixture with the following compound (c1) at a halogen/magnesium molar ratio of 0.20 or more, reacting the resultant reaction mixture with the following compounds (d1) and (e) at a temperature of 120° C. or higher but 150° C. or lower, washing the reaction mixture with an inert solvent, reacting the reaction mixture with the following compound (e) again at the above temperature and washing the reaction mixture with an inert solvent, whereby there can be provided the solid catalyst component for olefin polymerization and a catalyst for olefin polymerization which have high polymerization activity and give an olefin polymer having a less residual Cl content and being excellent in stereoregularity and powder form and a process for producing an olefin polymer,
| 09-08-2011 |
20120046159 | METHOD FOR RECOVERY OF COBALT AND MANGANESE FROM SPENT COBALT-MANGANESE-BROMINE (CMB) CATALYST AND METHOD FOR PRODUCING CMB CATALYST INCLUDING THE RECOVERY METHOD - Disclosed is a method for recovering cobalt and manganese from a spent cobalt-manganese-bromine (CMB) catalyst. The method includes (a) continuously leaching a spent CMB catalyst with sulfuric acid, (b) separating the leachate into a solution and a residue, (c) extracting the solution with a solvent, and (d) washing the extract with water. According to the method, high-purity cobalt and manganese can be recovered in high yield from a spent CMB catalyst while minimizing the amount of impurities. Further disclosed is a method for producing a CMB liquid catalyst from the extract containing cobalt and manganese obtained by the recovery method. | 02-23-2012 |
20120264593 | MANUFACTURING METHOD OF SOLID CATALYST FOR PROPYLENE POLYMERIZATION - Disclosed is a method for preparing a solid catalyst for propylene polymerization, specifically to a method for preparing a solid catalyst for propylene polymerization which can produce a polypropylene having high melt flow rate, a wide molecular distribution and excellent stereoregularity with a high production yield. | 10-18-2012 |
20130035227 | Procatalyst Composition with Substituted 1,2-Phenylene Aromatic Diester Internal Donor and Method - Disclosed are procatalyst compositions having an internal electron donor which include a substituted phenylene aromatic diester and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit high activity and produce propylene-based olefins with broad molecular weight distribution. | 02-07-2013 |
20140005038 | MANUFACTURING METHOD OF SOLID CATALYST FOR PROPYLENE POLYMERIZATION | 01-02-2014 |
20140349842 | PREPARATION METHOD OF POLYESTER SYNTHESIS COMPOSITE CATALYST - A method of preparing a composite catalyst for polyester synthesis includes the steps of: 1) sequentially dissolving a titanium compound, a silicon compound and a tin compound in an organic solvent; 2) adding a water solution of an acidic compound or of an alkaline compound in the compound from step 1) to cause hydrolysis thereof and collecting a precipitate, and washing the hydrolysis precipitate with a deionized water to obtain the composite catalyst. The catalyst is not only effective in polyester production polycondensation, but also has significant catalytic activity in esterification. The produced polyester chips all have a desirable hue. | 11-27-2014 |