| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 526132000 | Contains non-transition elemental metal, hydride thereof, or carbon to non transition metal atom bond | 25 |
| 20130274430 | Bulk Polymerization of Conjugated Dienes Using a Nickel-Based Catalyst System - A process for preparing a polydiene, the process comprising the steps of (i) providing conjugated diene monomer; (ii) charging a nickel-based catalyst system to the conjugated diene monomer; and (iii) charging a modulating Lewis base to the conjugated diene monomer, to thereby polymerize the conjugated diene monomer in the presence of the modulating Lewis base, where said step of charging a modulating Lewis base is separate from said step of charging a nickel-based catalyst, and where said steps of providing conjugated diene monomer, charging a nickel-based catalyst system and charging a Lewis base form a polymerization mixture that includes less than 20% by weight of organic solvent based on the total weight of the polymerization mixture. | 10-17-2013 |
| 20140206828 | METHOD FOR PREPARING SUPPORTED METALLOCENE CATALYST AND METHOD FOR PREPARING POLYOLEFIN USING THE SAME - The present invention relates to a method for preparing a supported metallocene catalyst, and a method for preparing polyolefin using the same, in which the supported metallocene catalyst prepared from the simple process according to the method for preparing the supported metallocene catalyst of the present invention can apply to the polymerization of the polyolefin that is polymerized at low pressure or high pressure; the molecular weight distribution of polyolefin prepared can be easily controlled; and there are effects such that its catalyst activity is significantly higher than that of the existed supported metallocene catalyst, and the molecular weight distribution can be easily controlled. | 07-24-2014 |
| 20150337062 | Ethylene Based Polymer - The instant invention provides an ethylene based polymer. | 11-26-2015 |
| 526133000 | Boron compound is halogen-containing | 22 |
| 20080319148 | Process for producing modified particle; carrier; catalyst component for addition polymerization; process for producing catalyst for addition polymerization; and process for producing addition polymer - A process for producing a modified particle, which comprises the step of contacting a compound (a) defined by the formula, M | 12-25-2008 |
| 20090043058 | Supported clefin polymerization catalyst - A supported catalyst system comprises (a) a dehydrated support material, (b) a transition metal compound, and (c) an activator and is characterised in that the support material has been pretreated with at least two different organoaluminum compounds prior to content with either or both the transition metal-compound or the activator. The preferr transition metal compound is a metallocene and the supported catalyst systems are suitable for the preparation of polymers having broad molecular weight distributions and improved melt strength. | 02-12-2009 |
| 20090054607 | Transition metal complex, catalyst for olefin polymerization, and process for producing olefin polymer with the same - The present invention relates to a transition metal complex represented by the formula (I): | 02-26-2009 |
| 20090124771 | POLYMERIZATION CATALYST AND METHOD FOR PRODUCING POLY-ALPHA-OLEFIN USING THE CATALYST - The present invention provides a polymerization catalyst prepared by bringing (A) a transition metal compound, (B) a solid boron compound capable of forming an ion pair with the component (A), (C) an organoaluminum compound, and (D) one or two or more kinds of compounds selected from an α-olefin, an internal olefin and a polyene into contact with each other, the polymerization catalyst being a polymerization catalyst having high activity or a homogeneous polymerization catalyst having high activity and capable of being easily fed into a polymerization reaction system; and a method for producing a poly-α-olefin by polymerizing an α-olefin having from 3 to 30 carbon atoms by using such a catalyst. | 05-14-2009 |
| 20090286943 | Process For Preparation Of Olefin Polymers - The present invention relates to a preparation method of olefin polymers using a catalyst composition containing a transition metal compound. In detail, the present invention provides a preparation method of olefin polymer using a catalyst composition comprising a transition metal compound, wherein the preparation method comprises introducing a scavenger to a continuous solution polymerization reactor in a specific range of amount to give the olefin polymer with good productivity. | 11-19-2009 |
| 20110207902 | METAL-LIGAND COMPLEXES AND CATALYSTS - The present invention generally relates to metal-ligand complexes, catalysts comprising or prepared from the metal-ligand complexes, processes of catalyzing olefin polymerization reactions with the catalysts to prepare polyolefins, polyolefins prepared thereby, processes of making the metal-ligand complexes and catalysts, and intermediate compounds useful therefor. | 08-25-2011 |
| 20110288250 | Copolymer and Production Process Thereof - A homopolymer having a monomer unit such as an isopropylidene diallylmalonate unit; a process for producing said homopolymer comprising the step of homopolymerising a monomer such as isopropylidene diallylmalonate; a copolymer containing said monomer unit and an ethylene unit and/or α-olefin unit; and a process for producing said copolymer comprising the step of copolymerizing a monomer such as isopropylidene diallylmalonate with at least ethylene and/or an α-olefin. | 11-24-2011 |
| 20120165485 | Method for Control of the Degree of Branch of Polybutadiene with High 1,4-CIS Content - A method for controlling the degree of branching of a 1,4-cis polybutadiene when preparing the 1,4-cis polybutadiene from 1,3-butadiene monomers in a nonpolar solvent using a catalyst system containing a an organonickel compound, alkylaluminum compound, and a boron fluoride complex is carried out by controlling the catalyst combination and a pretreatment condition. The method allows easy control of the degree of branching of the 1,4-cis polybutadiene without having to control the polymerization temperature or to add additional additives. As a result, the processability and the physical properties of the polymer can be optimized. | 06-28-2012 |
| 20120196994 | NOVEL POST METALLOCENE-TYPE TRANSITION METAL COMPOUNDS - The present invention relates to a novel post metallocene-type ligand compound, to a metal compound containing the ligand compound, to a catalytic composition containing the metal compound, and to a method for preparing same, as well as to a method for preparing olefin polymers using the catalytic composition. The present invention provides a catalyst for preparing special polyolefin-based polymers having excellent activity | 08-02-2012 |
| 20120316303 | OLIGOMERISATION OF OLEFINIC COMPOUNDS WITH REDUCED POLYMER FORMATION - The invention relaters to a process for producing an oligomeric product by oligomerisation of at least one olefinic compound, the process including a) providing an activated oligomerisation catalyst by combining, in any order, i) a source of chromium, ii) a ligating compound of the formula I (R | 12-13-2012 |
| 20130281643 | OLEFIN-BASED POLYMERS AND DISPERSION POLYMERIZATIONS - The invention provides a polymerization process comprising polymerizing a reaction mixture comprising one or more monomer types, at least one catalyst, and at least one solvent, to form a polymer dispersion, and wherein the at least one catalyst is soluble in the at least one solvent, and wherein the polymer forms a dispersed phase in the solvent, and wherein the at least one solvent is a hydrocarbon. The invention provides a composition comprising an ethylene-based polymer comprising at least the following properties: a) a weight average molecular weight (Mw(abs)) greater than, or equal to, 60,000 g/mole; and b) a molecular weight distribution (Mw(abs)/Mn(abs)) greater than, or equal to, 2.3. | 10-24-2013 |
| 20130317186 | LONG CHAIN-BRANCHED ETHYLENE-ALPHA OLEFIN COPOLYMER - The present invention relates to an ethylene-alpha olefin copolymer comprising long chain branches (LCB), while having a narrow molecular weight distribution. The ethylene-alpha olefin copolymer can be prepared by a continuous solution polymerization process using an activated catalyst composition containing a Group 4 transition metal compound having a monocyclopentadienyl ligand, to which a quinoline amino group is introduced. | 11-28-2013 |
| 20140039137 | Polyalphaolefins Prepared Using Modified Salan Catalyst Compounds - Disclosed herein are polyalphaolefins and Salan cataylsts, catalyst systems, and processes to produce the polyalphaolefins. | 02-06-2014 |
| 20140073752 | Living Coordinative Chain Transfer Polymerization with Dynamic Counterion Exchange - Disclosed is a method of producing a polyolefin composition comprising contacting a metal alkyl and a first olefin monomer, then adding a first co-catalyst, a second co-catalyst, a pre-catalyst, and a second olefin monomer. The method allows for the production of a series of copolymers with tunable incorporation ratios of the first olefin monomer. The method also allows for the production of polyolefins of low molecular weights and narrow molecular weight distributions. | 03-13-2014 |
| 20140249283 | BORANE ACTIVATED TITANIUM CATALYST SYSTEM COMPRISING GUANIDINE AND DIENE LIGANDS - The invention relates to a catalyst system for the polymerization of olefms comprising a metal complex of formula and an activating cocatalyst, wherein M is titanium, Cy is a cyclopentadienyl-type ligand, D is a diene, L is a guanidinate-containing ligand of the formula wherein each A is independently selected from nitrogen or phosphorous and R, R | 09-04-2014 |
| 20140288250 | PROCESS FOR PREPARATION OF CYCLIC AND ACYCLIC DIENE COPOLYMER AND RUBBER COMPOSITION - A process for preparing a copolymer of an acyclic conjugated diene and a cyclic conjugated diene using a polymerization catalyst system comprising a transition metal compound or a lanthanide metal compound, an alkylating agent, and an inorganic halide alcoholate, and rubber compositions and tires comprising the same. The copolymer contains at least 90% acyclic conjugated diene monomer, has a number average molecular weight of between 40,000 and 300,000, and has a cis-bond content of at least 92% | 09-25-2014 |
| 20150094434 | PROCESS FOR PRODUCING OLEFIN POLYMER - To provide a process for producing an olefin polymer, which makes it possible to use, as a solvent for use in the catalyst preparation and the like, an aliphatic hydrocarbon solvent instead of an aromatic hydrocarbon solvent causing large environmental burden, and which has good olefin polymerization activity. A process for producing an olefin polymer, characterized by having a step comprising feeding an olefin polymerization catalyst solution, which is obtained by mixing a metallocene compound, a compound that reacts with the metallocene compound to form an ion pair and at least one compound selected from an organoaluminum compound and an organoaluminum oxy compound with a saturated hydrocarbon solvent, to a polymerization reactor and solution-polymerizing an olefin in the polymerization reactor. | 04-02-2015 |
| 20150094435 | TRANSITION METAL COMPOUND, CATALYTIC COMPOSITION INCLUDING THE SAME, AND METHOD FOR PREPARING POLYMER USING THE SAME - The present specification describes a transition metal compound having a novel structure, a catalytic composition including the same, and a method for preparing a polymer using the same. | 04-02-2015 |
| 20150141597 | Boron-Bridged Bis-Indenyl Metallocene Catalyst Systems and Polymers Produced Therefrom - Disclosed herein are catalyst compositions containing boron bridged, bis-indenyl metallocene compounds with an alkenyl substituent. These catalyst compositions can be used for the polymerization of olefins. For example, ethylene copolymers produced using these catalyst compositions can be characterized by a density less than 0.92 g/cm | 05-21-2015 |
| 20150337060 | POLYMERISATION PROCESS - A process for the preparation of a propylene homopolymer comprising polymerising propylene in the presence of a catalyst comprising: (i) a metallocene complex of a group (IV) metal said metallocene comprising at least two cyclopentadienyl type ligands; (ii) a boron cocatalyst; and (iii) an aluminoxane cocatalyst; said catalyst being in solid form, preferably in solid particulate form, and being free from an external carrier; preferably wherein the melting point of the propylene polymer is controlled by adjusting the amount of or nature of the boron cocatalyst. | 11-26-2015 |
| 20160130372 | CATALYST COMPOSITION, A METHOD FOR PREPARING THE SAME, AND A METHOD FOR PREPARING POLYOLEFIN USING THE SAME - This disclosure relates to a catalyst composition that can prepare polyolefin having high molecular weight, a method for preparing the same, and a method for preparing polyolefin using the same. The dinuclear metallocene compound included in the catalyst composition according to the present invention is a dinuclear metallocene compound with a new structure, and, unlike a single-site catalyst, has high accessibility to a substrate, and thus, can provide a multi-site catalyst with high activity. | 05-12-2016 |
| 20160159949 | SOLUTION POLYMERIZATION PROCESS - A Solution polymerization process for the (co) polymerization of ethylene is conducted in the presence of i) a phosphinimine catalyst; ii) a co catalyst, and iii) a long chain amine modifier. | 06-09-2016 |
