| LANXESS INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120059074 | RECYCLED BUTYL IONOMERS AND RECYCLING PROCESSES - The present invention relates to processes for recycling articles made from butyl ionomers and processes for producing recycled butyl ionomers. The invention further relates to composites comprising recycled butyl ionomers and fillers and articles made from recycled butyl ionomers. The invention also relates to uncured filled articles made from butyl ionomers having certain physical properties. Exemplary fillers include silica, carbon black, talc and clay, particularly onium substituted high aspect ratio nanoclays. | 03-08-2012 |
| 20110301281 | ARBORESCENT POLYMERS AND PROCESS FOR MAKING SAME - The present invention relates to arborescent polymers and to a process for making same. In one embodiment, the present invention relates to arborescent polymers formed from at least one inimer and at least one isoolefin that have been end-functionalized with a polymer or copolymer having a low glass transition temperature (T | 12-08-2011 |
| 20110251320 | NOVEL ELASTOMERIC COMPOSITIONS WITH IMPROVED HEAT RESISTANCE, COMPRESSION SET, AND PROCESSABILITY - An elastomeric composition containing a rubber polymer, an acid acceptor, and a silane-modified needle-like/acircular mineral additive. Compositions according to the present invention have superior heat resistance, compression set resistance, and improved processability (lower compound Mooney) compared to known rubber compositions. | 10-13-2011 |
| 20110184087 | BUTYL RUBBER COMPOUNDS COMPRISING A MIXED MODIFIER SYSTEM - Rubber compounds containing a halobutyl elastomer, at least one additional elastomer, a mineral filler and at least a three component mixed modifier system comprising a silane compound, a phosphine compound and an additive containing at least one hydroxyl group and a functional group containing a basic amine. A process for preparing the compounds is also disclosed. The compounds are particularly useful in tire treads and exhibit improved processability, traction, rolling resistance and wear properties. | 07-28-2011 |
| 20110150712 | ISOOLEFIN-DIOLEFIN PRODUCTION PROCESS AND APPARATUS THEREFORE - In an isoolefin-diolefin rubber production process (e.g. a butyl rubber production process), the cold rubber slurry produced in the reaction vessel is transported from the reaction vessel to the flash tank during which time the cold slurry may be expressed to separate at least part of the cold liquid reaction medium from the isoolefin-diolefin rubber. The separated cold liquid reaction medium is transported off stream, for example by a mechanical filter, where it can be recycled back into the reaction vessel and/or where it can be used to cool a feed stream or streams of the reaction components. The isoolefin-diolefin rubber and the residual liquid reaction medium are transported to a flash tank for further processing. The ability to separate and recycle cold liquid reaction medium makes the process more economical. In one aspect, the slurry may be transported from the reaction vessel to the flash tank by a self-cleaning fully intermeshing co-rotating twin screw extruder, which helps overcome the problem of plugging due to rubber sticking to the surfaces of the slurry transfer apparatus. | 06-23-2011 |
| 20110077326 | FILLED ELASTOMERIC COMPOUNDS - The present invention provides a process for preparing a filled halobutyl elastomer, which includes mixing a halobutyl elastomer, mineral filler and a silylated additive. The present invention also provides a filled halobutyl elastomer containing a mineral filler and a silylated additive. | 03-31-2011 |
| 20100317765 | SILICA-FILLED ELASTOMERIC COMPOUNDS - The present invention relates to silica-filled halogenated butyl elastomers, such as bromobutyl elastomers (BIIR). Further, the present invention also relates to bromobutyl elastomers with improved scorch safety. | 12-16-2010 |
| 20100298476 | BUTYL RUBBER COMPOUNDS COMPRISING A THREE COMPONENT MIXED MODIFIER SYSTEM - Rubber compounds containing a halobutyl elastomer, at least one additional elastomer, a mineral filler and at least a three component mixed modifier system comprising a silane compound, a phosphine compound and an additive containing at least one hydroxyl group and a functional group containing a basic amine. A process for preparing the compounds is also disclosed. The compounds are particularly useful in tire treads and exhibit improved processability, traction, rolling resistance and wear properties. | 11-25-2010 |
| 20100267884 | ARBORESCENT POLYMERS AND PROCESS FOR MAKING SAME - The present invention relates to arborescent polymers and to a process for making same. In one embodiment, the present invention relates to arborescent polymers formed from at least one inimer and at least one isoolefin that have been end-functionalized with a polymer or copolymer having a low glass transition temperature (T | 10-21-2010 |
| 20100249316 | ARBORESCENT POLYMERS AND PROCESS FOR MAKING SAME - The present invention relates to arborescent polymers and to a process for making same. In one embodiment, the present invention relates to arborescent polymers formed from at least one inimer and at least one isoolefin that have been end-functionalized with a polymer or copolymer having a low glass transition temperature (T | 09-30-2010 |
| 20100093932 | PROCESS FOR THE CONTINUOUS HYDROGENATION OF CARBON-CARBON DOUBLE BONDS IN AN UNSATURATED POLYMER - Proposed is a process for the continuous hydrogenation of carbon-carbon double bonds in an unsaturated polymer based on a conjugated diolefin and at least one other copolymerizable monomer to produce a hydrogenated polymer, in the presence of a solvent and a homogeneous or heterogeneous catalyst, wherein said unsaturated polymer, said homogeneous or heterogeneous catalyst and hydrogen are passed through a reactor equipped with static internal elements. | 04-15-2010 |
| 20100093931 | PROCESS FOR THE CONTINUOUS HYDROGENATION OF CARBON-CARBON DOUBLE BONDS IN AN UNSATURATED POLYMER TO PRODUCE A HYDROGENATED POLYMER - Proposed is a process for the continuous hydrogenation of carbon-carbon double bonds in an unsaturated polymer to produce a hydrogenated polymer, said unsaturated polymer being based on a conjugated diolefin and at least one other copolymerizable monomer, in the presence of a homogeneous or heterogeneous catalyst, wherein said unsaturated polymer, hydrogen and said homogeneous or heterogeneous catalyst is passed through a multistage agitated reactor, comprising a cylindrical, elongated shell having closed ends and separated by baffles into a multiplicity of discrete chambers with access from one chamber to another through concentric circular openings, axially centered with said baffles and a continuous rotatable shaft extending concentric with said baffles within said shell with at least one impeller attached thereto positioned in each chamber, said continuous rotatable shaft and said circular openings providing annular openings and said hydrogenated polymer being withdrawn at the opposite end of the multistage agitated reactor at which the feed is introduced. | 04-15-2010 |
| 20100063211 | ARBORESCENT POLYMERS AND PROCESS FOR MAKING SAME - The present invention relates to arborescent polymers and to a process for making same. In one embodiment, the present invention relates to arborescent polymers formed from at least one inimer and at least one isoolefin that have been end-functionalized with a polymer or copolymer having a low glass transition temperature (T | 03-11-2010 |
| 20100059452 | METHOD OF PURIFYING BLOCK COPOLYMERS - The invention relates to block polymers, for example, arborescent copolymer compounds, and to methods of making and purifying such compounds. In one embodiment, the invention relates to arborescent polymer compounds that contain one or more styrene polymeric blocks in combination with one or more isobutylene polymeric blocks. In another embodiment, the invention relates to methods for purifying arborescent polymer compounds that contain at least one styrene polymeric block in combination with at least one isobutylene polymeric block. | 03-11-2010 |
| 20100048838 | ISOOLEFIN-DIOLEFIN PRODUCTION PROCESS AND APPARATUS THEREFORE - In an isoolefin-diolefin rubber production process (e.g. a butyl rubber production process), the cold rubber slurry produced in the reaction vessel is transported from the reaction vessel to the flash tank during which time the cold slurry may be expressed to separate at least part of the cold liquid reaction medium from the isoolefin-diolefin rubber. The separated cold liquid reaction medium is transported off stream, for example by a mechanical filter, where it can be recycled back into the reaction vessel and/or where it can be used to cool a feed stream or streams of the reaction components. The isoolefin-diolefin rubber and the residual liquid reaction medium are transported to a flash tank for further processing. The ability to separate and recycle cold liquid reaction medium makes the process more economical. In one aspect, the slurry may be transported from the reaction vessel to the flash tank by a self-cleaning fully intermeshing co-rotating twin screw extruder, which helps overcome the problem of plugging due to rubber sticking to the surfaces of the slurry transfer apparatus. | 02-25-2010 |
| 20100036037 | POLYMERIZATION PROCESS FOR PREPARING BUTYL RUBBER NANOCOMPOSITES - A polymerization process for preparing a silica-filled butyl rubber polymer. A quaternary onium ion substituted silaceous nanoclay is dispersed in the organic polymerization fluid prior to polymerization of an isoolefin monomer and a multiolefin monomer in the fluid. The resulting silica-filled polymer comprises butyl rubber intercalated with silica from the silaceous nanoclay. The rate of polymerization is substantially unaffected by addition of the nanoclay to the polymerization fluid. The resulting silica-filled polymers exhibit improved impermeability as compared with non-filled polymers. | 02-11-2010 |
| 20100010140 | PEROXIDE CURABLE RUBBER COMPOUND CONTAINING HIGH MULTIOLEFIN HALOBUTYL IONOMERS - The present invention relates to a peroxide curable rubber nanocomposite compound comprising a peroxide curative, a nanoclay and a high multiolefin halobutyl ionomer prepared by reacting a halogenated butyl polymer having a high mol percent of multiolefin with at least one nitrogen and/or phosphorus based nucleophile. The resulting high multiolefin halobutyl ionomer comprises from about 2 to 10 mol % multiolefin. The present invention is also directed to a shaped article comprising the rubber compound. | 01-14-2010 |
| 20090281248 | HYDROGENATION OF DIENE-BASED POLYMER LATEX - The present invention relates to a process for the hydrogenation of the carbon-carbon double bonds in a diene-based polymer latex in the absence of any organic solvent by a catalytically active system prepared in-situ based on a first main catalyst component and a secondary water-insoluble catalyst component. | 11-12-2009 |
| 20090270563 | HYDROGENATION OF DIENE-BASED POLYMERS - The present invention relates to a process for the hydrogenation of the carbon-carbon double bonds in diene-based polymers in bulk form by treatment of said diene-based polymer with hydrogen in the presence of an iridium containing catalyst and in the absence of any organic solvent. | 10-29-2009 |
| 20090270562 | HYDROGENATION OF DIENE-BASED POLYMERS - The present invention relates to a process for the selective hydrogenation of the carbon-carbon double bonds in diene-based polymers in bulk form by treatment of the polymer with hydrogen in the presence of a platinum group metal containing catalyst and in the absence of any organic solvent. | 10-29-2009 |
| 20090258996 | HYDROGENATION OF DIENE-BASED POLYMER LATEX - The present invention relates to a process for the selective hydrogenation of the carbon-carbon double bonds in a diene-based polymer latex using a water-soluble catalyst and simultaneously a water-insoluble co-catalyst. | 10-15-2009 |
| 20090203850 | HALOBUTYL ELASTOMERS - The present invention relates to the modification of butyl elastomers, particularly halobutyl elastomers, under solvent free conditions with a phase transfer catalyst in the presence of an alkyl metal salt of an oxygen or sulfur-based nucleophile. | 08-13-2009 |
| 20090189118 | Liquid Maleated Butyl Rubber - The present invention relates to a grafted liquid polymer comprising a polymer of a C | 07-30-2009 |
| 20090018289 | PROCESS FOR PRODUCTION OF HIGH-ISOPRENE BUTYL RUBBER - The present invention relates to a continuous process for producing polymers at conversions ranging from 50% to 95% having a Mooney viscosity of at least 25 Mooney-units and a gel content of less than 15 wt. % containing repeating units derived from at least one isoolefin monomer, more than 4.1 mol % of repeating units derived from at least one multiolefin monomer and optionally further copolymerizable monomers in the presence of AlCl | 01-15-2009 |
