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| Number | Title | Issue Date |
| 7291577 | Hydrometallurgical process for production of supported catalysts A process for the production of a supported catalyst. The process comprises heating a slurry that comprises a catalyst support and at least one active catalytic ingredient precursor. Gas is introduced to the slurry at a sufficient pressure to reduce the at least one... | 11/06/2007 |
| 7125930 | Block copolymer and polymeric luminescent element A block copolymer comprising two or more blocks and having fluorescence in the solid state, wherein blocks thereof may be the same or different, and in each of the blocks, one or more kinds of repeating units are bonded through conjugated bonds, and bonding between ... | 10/24/2006 |
| 7022792 | Initiation of polymerization by hydrogen atom donation This invention relates to the polymerization of vinylically-unsaturated monomers in the presence of a chain transfer catalysts where the polymerization process is initiated with hydrogen gas or a hydrogen atom donor rather than conventional free radical initiators. ... | 04/04/2006 |
| 6894111 | Organic electrochromic materials and polymers for optical attenuation in the near infrared region The invention provides generally a new type of organic electrochromic Near Infrared (NIR)-active materials capable of absorbing and attenuating the light in the NIR region around 1550 nm and forming thin films on electrodes for variable optical attenuator (VOA) appl... | 05/17/2005 |
| 6699813 | Lanthanide-based catalyst composition for the manufacture of polydienes A catalyst composition that is the combination of or the reaction product of ingredients comprising (a) an lanthanide compound, (b) an alkylating agent, (c) a nickel-containing compound, and optionally (d) a halogen-containing compound, with the proviso t... | 03/02/2004 |
| 6441110 | Method for producing halogen-free reactive polyisobutene A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 50 mol % and an average molecular weight Mn of 280-10000 dalton by the cationic polymerization in the liquid phase of isobutene or h... | 08/27/2002 |
| 6384154 | Preparation of halogen-free, reactive polyisobutene A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 60 mol % and an average molecular weight Mn of 800-3000 dalton by cationic polymerization in the liquid phase of isobutene over an a... | 05/07/2002 |
| 6294624 | Modified diene elastomer and its preparation A modified diene elastomer prepared by a process comprising the steps of polymerizing a diolefin compound containing a conjugated double bond in a liquid phase in the presence of a cobalt compound, an organic aluminum compound containing a halogen atom, a... | 09/25/2001 |
| 6239237 | Group 8, 9 or 10 transition metal catalyst for olefin polymerization Olefin co- or homopolymers having a good molecular weight and short chain branching may be prepared in the presence of a tridentate complex of a Group 8, 9 or 10 metal.... | 05/29/2001 |
| 6235859 | Production process for polyvinyl ether and catalyst used for the process Provided are an industrially advantageous process for producing a polymer of polyvinyl ether at a temperature of not lower than a room temperature for short time, and a catalyst used for the process. The above process is characterized by using an acid cla... | 05/22/2001 |
| 6180739 | Polymerizable cyclodextrin derivatives The polymerizable cyclodextrin derivatives ("PCDs") of this invention relate to cyclodextrin derivatives wherein substantially each molecule of which contains one or more covalently attached polymerizable group or groups, may also contain one or more othe... | 01/30/2001 |
| 5691430 | Process for making vinyl ether polymers A process for polymerizing a vinyl ether monomer which comprises contacting the vinyl ether with an initiator system of silicon dioxide and a one or more metallic oxides.... | 11/25/1997 |
| 5391657 | Method for reducing sheeting and static charges during polymerization of ethylene polymers A method for reducing sheeting during polymerization of an alpha-olefin by feeding either a positive charge generating (MgO, ZnO, Al2 O3, CuO, and mixtures thereof) or a negative charge generating (V2 O5, SiO | 02/21/1995 |
| 5182316 | Fluorescent degree of cure monitors A curable composition, the cure of which can be monitored optically, comprises at least one of a hydride curable silicone, an ethylenically unsaturated compound, and a cationically polymerizable monomer, and as cure monitor dibenzofulvene or derivative th... | 01/26/1993 |
| 5114990 | Process for the production of pigment/plastic premixes There is described a process for the production of pigment/plastic premixes characterized by homogeneous distribution of pigment in a polymer matrix. The invention is based on the polymerization of olefins carried out by means of a process using Ziegler c... | 05/19/1992 |
| 4463117 | Heat stable, polymer-forming composition A heat-stable, polymer-forming composition of a polymerizable material, a transition metal compound, a polymer chain terminator, and, optionally, a preventive antioxidant is disclosed as well as particular uses of such composition.... | 07/31/1984 |
| 4276399 | Supported catalyst from chromium for olefin polymerization Polymerization of 1-olefins is conducted with a supported catalyst consisting essentially of a polymeric hydrocarbon aluminate comprising at least one ##STR1## unit.... | 06/30/1981 |
| 4189402 | Supported catalyst for olefin polymerization Polymerization of 1-olefins is conducted with a supported catalyst consisting essentially of a polymeric hydrocarbon aluminate comprising at least one ##STR1## unit.... | 02/19/1980 |
| 4130505 | Two stage activation of fluorided chromium-containing catalyst Catalyst is produced by first activating a chromium-containing silicon-containing support at calcination temperature, treating with a fluoride compound and thereafter heating at a lower temperature of 300° to 1000°F for about 1 to 20 hours. Catalysts th... | 12/19/1978 |
| 4125698 | Polymerization of ethylenically unsaturated hydrocarbons Method for the polymerization of alpha-olefins, e.g., ethylene and its higher homologs, to produce high molecular weight polymers by contacting the alpha-olefin or an alpha-olefin mixture to be polymerized with a catalyst formed from a mixture of a first ... | 11/14/1978 |
| 3984351 | Olefin polymerization catalyst Olefin polymerization catalysts are prepared by depositing a chromium compound and an aluminum compound on an inorganic support material and heating the support material in a non-reducing atmosphere at a temperature above about 300°C up to the decomposit... | 10/05/1976 |
| 3960826 | Olefin polymerization process An olefin polymerization process for the preparation of polyolefins having relatively low molecular weights and high melt indexes without loss of catalyst activity, utilizing a catalyst comprising a silica xerogel support having a pore volume greater than... | 06/01/1976 |
