| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 526129000 | Silicon present in inorganic oxygen-containing compound | 32 |
| 20080300371 | POLYOLEFIN PRODUCTION - Use of a metallocene compound of general formula Ind | 12-04-2008 |
| 20090062492 | Aluminoxane Catalyst Activators Derived From Dialkylaluminum Cation Precursor Agents, Processes For Making Same, And Use Thereof In Catalysts And Polymerization Of Olefins - Compositions useful for activating catalysts for olefin polymerization, and methods for making same, are provided. Such compositions can be derived from at least: an organoaluminum compound, a carrier, an oxygen source, and, optionally, a Lewis base. | 03-05-2009 |
| 20090131613 | Supported polymerisation catalysts - A method for the preparation of a supported polymerisation catalyst system, comprises: (1) contacting together in a suitable solvent (a) a transition metal polymerisation talyst and (b) a cocatalyst, (2) contacting the mixture from step (1) with a porous support material, and (3) removing the solvent is characterised in that the molar ratio of cocatalyst to transition metal catalyst is <10:1. The preferred polymerisation catalysts are transition metal compounds in particular metallocene complexes. Premixing the catalyst components before addition to the support leads to certain advantages in particular a more facile method of preparation without any loss in activity. | 05-21-2009 |
| 20100029872 | ACIDIC ACTIVATOR-SUPPORTS AND CATALYSTS FOR OLEFIN POLYMERIZATION - This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst composition. In one aspect, this invention encompasses precontacting a metallocene with an olefin or alkyne monomer and an organoaluminum compound, prior to contacting this mixture with the acidic activator-support. | 02-04-2010 |
| 20100317813 | SUPPORTED CATALYST FOR THE PREPARATION OF (CO)MONOMERS OF ETHYLENICALLY UNSATURATED MONOMERS - The present invention is directed to a supported catalyst comprising
| 12-16-2010 |
| 20110105705 | Metallocene Supported Catalyst Composition and a Process for the Preparation of Polyolefin Using the Same - The invention relates to a metallocene supported catalyst composition and a process for the preparation of polyolefin using the same. A metallocene supported catalyst composition according to the invention is prepared by bringing a compound of a group IV transition metal into contact with an inorganic or organic porous carrier treated with an ionic compound. Advantages of a metallocene supported catalyst composition of the invention include an increase in the catalyst activity during polymerization of slurry and an olefin compound in the vapor phase even at a low content of metallocene metal components within the carrier, and an improvement in solving process problems such as fouling, sheeting, plugging or the like. | 05-05-2011 |
| 20110112262 | SUPPORTED METALLOCENE CATALYSTS - Method employing a supported metallocene catalyst composition in the production of an isotactic ethylene propylene co-polymer. The composition comprises a metallocene component supported on a particulate silica support having average particle size of 10-40 microns, a pore volume of 1.3-1.6 ml/g, a surface area of 200-400 m | 05-12-2011 |
| 20110301308 | Increased run length in gas phase reactors - The time between shut downs of a gas phase reactor for the polymerization of polyethylene may be significantly increased if the catalyst used is not prepared by impregnating the support with a solution of catalyst in an electron donor; the reaction is controlled using the addition of activator based on polymer production rate and the recycle stream contains a condensed liquid phase in an amount greater than 13 weight %. Operating the reactor in this manner increase the time between cleaning the cooler (heat exchanger) the bed plate, or both from about 4 to 6 months to not less than about 24 months. | 12-08-2011 |
| 20120095173 | PREPOLYMERIZED CATALYST FOR OLEFIN POLYMERIZATION, METHOD OF PRODUCING THIS PREPOLYMERIZED CATALYST AND METHOD OF PRODUCING OLEFIN POLYMER - A method of producing a prepolymerized catalyst for olefin polymerization comprising a fine powder removal step of removing fine particles from olefin-prepolymerized catalyst particles for olefin polymerization. The prepolymerized catalyst having a low fine particle content is applicable suitably to the field of continuous polymerization of olefins. | 04-19-2012 |
| 20130018157 | SUPPORTED METALLOCENE CATALYSTS - Method employing a supported metallocene catalyst composition in the production of an isotactic ethylene propylene co-polymer. The composition comprises a metallocene component supported on a particulate silica support having average particle size of 10-40 microns, a pore volume of 1.3-1.6 ml/g, a surface area of 200-400 m | 01-17-2013 |
| 20130090438 | PROCESS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYETHYLENE - In a process for producing polyethylene having a molecular weight of at least 3×10 | 04-11-2013 |
| 20130172498 | CATALYST SYSTEMS FOR PRODUCTION OF ALPHA OLEFIN OLIGOMERS AND POLYMERS - Catalyst compositions containing N,N-bis[2-hydroxidebenzyl]amine transition metal compounds are disclosed. Methods for making these transition metal compounds and for using such compounds in catalyst compositions for the polymerization or oligomerization of alpha olefins also are provided. | 07-04-2013 |
| 20130245215 | Catalyst Composition Having Improved Flow Characteristics and Methods of Making and Using the Same - Catalyst compositions for the polymerization of olefins having improved flowability properties are provided. | 09-19-2013 |
| 20130274429 | ACTIVATING SUPPORTS - Activating supports may be suitably prepared by the following procedure (a) providing a porous mineral oxide support material, (b) treating the support with a phosphorus-containing compound, (c) treating the support from step (b) with an organometallic compound, (d) heating the functionalized support from step (c) under an inert gas and then under an atmosphere comprising oxygen, (e) fluorinating the support with a fluorinating agent, and (f) recovering an activating support. The activating supports are suitable used in combination with single site catalysts for the polymerization of olefins. The supports are most preferably used in combination with metallocene complexes. The preparative route for the activating supports provides for supported polymerization catalyst systems having excellent activities. | 10-17-2013 |
| 20140148565 | HIGH PERFORMANCE ZIEGLER-NATTA CATALYST SYSTEMS, PROCESS FOR PRODUCING SUCH SUPPORTED CATALYSTS AND USE THEREOF - A method for making a solid catalyst component for use in a Ziegler-Natta catalyst includes combining in a hydrocarbon solvent a porous particulate support with a hydrocarbon soluble organomagnesium compound to form a suspension. The organomagnesium compound is halogenated followed by addition of an alcohol and the mixture is then reacted with a titanium compound followed by a reaction with at least one diether compound to form the solid catalyst component. Afterwards the reaction product is extracted with a mixture of a titanium compound and a hydrocarbon solvent. The solid catalyst component recovered is combined with an aluminum cocatalyst to form a Ziegler-Natta catalyst system for the polymerization of olefins. In particular, the catalyst system including a diether internal electron donor may have an activity and hydrogen response suitable for the production of propylene polymers having a molecular weight distribution (PI(GPC)) in the range from about 5.75 to about 9. | 05-29-2014 |
| 20140221585 | NOVEL COPOLYMERS - A copolymer of ethylene and an alpha-olefin, said copolymer having a (a) density>0.930 g/cm | 08-07-2014 |
| 20140296456 | Catalyst Systems for Production of Alpha Olefin Oligomers and Polymers - Catalyst compositions containing N,N-bis[2-hydroxidebenzyl]amine transition metal compounds are disclosed. Methods for making these transition metal compounds and for using such compounds in catalyst compositions for the polymerization or oligomerization of alpha olefins also are provided. | 10-02-2014 |
| 20140378632 | MODIFIED PHOSPHINIMINE CATALYSTS FOR OLEFIN POLYMERIZATION - Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound. | 12-25-2014 |
| 20150065668 | Racemo Selective Metallation Process - This invention relates to racemic bridged bis(indenyl)metallocene transition metal compounds, rac-directing metallation reagents and a process to produce the racemic bridged bis(indenyl)metallocene transition metal compounds using the rac-directing metallation regents. | 03-05-2015 |
| 20150094433 | MODIFIED PHOSPHINIMINE CATALYSTS FOR OLEFIN POLYMERIZATION - Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound. | 04-02-2015 |
| 20150099856 | MODIFIED PHOSPHINIMINE CATALYSTS FOR OLEFIN POLYMERIZATION - Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound. | 04-09-2015 |
| 20150141596 | Catalyst Systems Comprising Pyridyldiamido Transition Metal Complexes and Chain Transfer Agent and Use Thereof - Pyridyldiamido transition metal complexes are disclosed for use in alkene polymerization with chain transfer agent. | 05-21-2015 |
| 20150315304 | Modified Catalyst Supports - supported catalyst system may include a titanated silica-containing catalyst support having at least 0.1 wt % of Ti and a specific surface area of from 150 m | 11-05-2015 |
| 20150329652 | Synthesis of Aryl Coupled BIS Phenoxides and Their Use in Olefin Polymerization Catalyst Systems With Activator-Supports - Disclosed herein are methods of making bis(phenol) ligand compounds and transition metal bis(phenolate) compounds. The transition metal bis(phenolate) compounds can be used as components in catalyst systems for the polymerization of olefins. | 11-19-2015 |
| 20150361200 | Multiple Catalyst System and Polymerization Process For Use Thereof - This invention relates to a catalyst system comprising a half sandwich chromocene compound featuring a tethered N-donor, with an alumoxane and consequent supportation on silica produces a catalyst that produces ultra-high molecular weight polyethylene and that further supportation of a catalyst capable of producing linear low density polyethylene produces a multiple-catalyst system on the same support, capable of producing polyethylene with a bimodal molecular weight distribution and excellent molecular weight. | 12-17-2015 |
| 20160108145 | PROCESSES FOR PREPARING SOLID METALLOCENE-BASED CATALYST SYSTEMS - Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods can include contacting a solid metallocene compound, an activator-support, and an organoaluminum compound, resulting in catalyst systems with increased catalytic activity as compared to catalyst systems utilizing a solution of the metallocene compound. | 04-21-2016 |
| 20160152742 | PREPARATION METHOD OF CATALYST FOR POLYOLEFIN POLYMERIZATION AND PREPARATION METHOD OF POLYOLEFIN | 06-02-2016 |
| 20190144571 | (Di)Silicon Bridged Metallocenes that Produce Polyethylene with Broad Molecular Weight Distribution and High Molecular Weight | 05-16-2019 |
| 20190144577 | Iron Tridentate Carbene Single Site Catalysts | 05-16-2019 |
| 20190144578 | Polymerization Processes | 05-16-2019 |
| 20190144579 | Polymerization Processes | 05-16-2019 |
| 20190144580 | Polymerization Processes | 05-16-2019 |
