| Patent Number |
Title Of Patent |
Date Issued |
| 6413900 |
Metallocene stabilized alumoxane |
July 2, 2002 |
| Stabilized alumoxane solutions are provided as well as a method for producing such solutions. The method generally involves the use of metallocene catalyst component(s) that when mixed with alumoxane solutions reduce the tendency for such solutions to form gels. |
| 6409911 |
Silicoaluminophosphates having an AEL structure and their use as FCC catalysts |
June 25, 2002 |
| Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions and high catalytic cracking activity a method for their preparation and their use as FCC catalysts. More particularly, the new SAPOs have a high silica:alumina ratio and favorable Si atom distribution. |
| 6407292 |
Preparation of alkylated diphenyl oxides |
June 18, 2002 |
| A continuous process for the manufacture of alkylated diphenyl compounds such as diphenyl ether and diphenyl sulfides by alkylating a diphenyl compound such as diphenyl ether with an olefinic alkylating agent by passing a continuous flow of the diphenyl compound and the olefin over a |
| 6407279 |
Integrated process for preparing dialkyl carbonates and diols |
June 18, 2002 |
| An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is first reacted with carbon dioxide in the presence of a carbonation catalyst to provide a co |
| 6403855 |
Synthesis of crystalline silicoaluminophosphates and use in olefin production |
June 11, 2002 |
| This invention is directed to a method of making a crystalline silicoaluminophosphate molecular sieve. The method includes adding to a vessel a mixture comprising a silicon containing composition, an aluminum containing composition, a phosphorus containing composition, and a template |
| 6403773 |
Cationic group 3 catalyst system |
June 11, 2002 |
| A cationic Group 3 or Lanthanide metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by a monoanionic bidentate ancillary ligand and two monoanionic ligands. The ancillary ligand and the transition metal form a metallocycle |
| 6403743 |
Petroleum resins and their production with supported catalyst |
June 11, 2002 |
| Petroleum resins are produced by using a supported halide based Lewis acid polymerization catalyst wherein the Lewis acid is chemically bound to the support and free hydrogen halide and/or alkane formed by the reaction of the Lewis acid with the support has been removed. The more active |
| 6399723 |
Metallocene compositions |
June 4, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##wherein M.sup.1 is selected from the group |
| 6399707 |
Impact copolymer and plastomer blend |
June 4, 2002 |
| A polymeric material suitable for fabrication into an article and particularly a polymeric material suitable for fabrication into an article suitable for receiving paint is provided. The polymeric material may be a blend of impact copolymer and plastomer. The impact copolymer includes |
| 6395847 |
Supported organometallic catalysts and their use in olefin polymerization |
May 28, 2002 |
| The invention is directed to organometallic catalysts prepared by a process comprising a) combining nucleophilic group-containing particulate support material with an arylboron or arylaluminum Lewis acid compound in the presence of a Lewis base compound; b) contacting the product of a) w |
| 6395674 |
Heat treating a molecular sieve and catalyst |
May 28, 2002 |
| Disclosed is a method of heat treating a molecular sieve. The method comprises providing a template-containing molecular sieve, heating the molecular sieve under conditions effective to remove a portion of the template from the molecular sieve, and cooling the heated molecular sieve |
| 6391998 |
Processing olefin copolymers |
May 21, 2002 |
| The invention is directed to essentially saturated hydrocarbon polymer composition comprising essentially saturated hydrocarbon polymers having A) a backbone chain, B) a plurality of essentially hydrocarbyl sidechains connected to A), said sidechains each having a number-average molecula |
| 6391977 |
Impact modifier for thermoplastic polyolefins |
May 21, 2002 |
| The invention relates to a composition of a blend of an ethylene/propylene random copolymer and a low to very low density ethylene/C.sub.4 to C.sub.20 -.alpha.-olefin random copolymer and its use as an impact modifier for polyolefin compositions. The invention further relates to poly |
| 6391817 |
Method for producing a prepolymerized catalyst |
May 21, 2002 |
| A method for controlling fouling in a prepolymerization reactor is disclosed and comprises combining a supported metallocene catalyst system, an alpha olefin monomer feed, and added hydrogen under suitable prepolymerization reaction conditions. This method is also useful for the cont |
| 6388156 |
Direct selective synthesis of para-xylene by reacting an aromatic compound with a methylating ag |
May 14, 2002 |
| It has been discovered that para-xylene (PX) can be synthesized with improved selectivity by reacting an aromatic compound such as toluene and/or benzene with a reactant(s) such as a combination of hydrogen and carbon monoxide and/or carbon dioxide and/or methanol or methylating agen |
| 6388152 |
Process for producing polypropylene from C3 olefins selectively produced in a fluid catalytic cr |
May 14, 2002 |
| A process for producing polymers from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is introduced into a process unit comprised of a reaction zone, a stripping zone, a catalyst regeneration zone, and |
| 6384158 |
Polymerization catalysts, their production and use |
May 7, 2002 |
| The catalyst system of the invention comprises:I) a catalyst for polymerizing olefins comprising:a) a first component comprising at least one transition metal of Group IV, V or VI and at least two cyclopentadienyl containing rings, said rings each having at least two substituents bonded to e |
| 6384142 |
Propylene impact copolymers |
May 7, 2002 |
| This invention relates to propylene impact copolymer compositions. In particular, these unique and improved compositions can be produced using conventional, commercial-scale processes. |
| 6384138 |
Hot melt pressure sensitive adhesive composition |
May 7, 2002 |
| A hot melt pressure sensitive adhesive for use with oriented polypropylene films is provided. The adhesive composition comprises an elastomeric component which is a blend of styrene-isoprene block copolymers and styrene-butadiene block copolymers mixed with a tackifier component. The |
| 6383439 |
Chemically modified elastomers and blends thereof |
May 7, 2002 |
| This invention relates to grafted ethylene-higher .alpha.-olefin polymers and blends thereof. Preferred grafted ethylene-higher .alpha.-olefin polymers are multimodal EPDM's having 5-40 weight % of a higher molecular weight, higher ethylene content, lower diene content fraction grafted w |
| 6380334 |
Metallocene compositions |
April 30, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.In one embodiment, the metallocenes of the present invention may be represented by the formula: ##STR1##wherein:M i |
| 6380331 |
Metallocene compositions |
April 30, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. In one embodiment, the metallocenes of the present invention may be represented by the formula: ##STR1##wherein:M |
| 6380330 |
Metallocene compositions |
April 30, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##wherein M.sup.1 is selected from the group |
| 6380325 |
Continuous slurry polymerization volatile removal |
April 30, 2002 |
| A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slu |
| 6380316 |
Polyisobutylene copolymers having reactive silyl grafts |
April 30, 2002 |
| A copolymer of isobutylene with 0.5 to 15 mole percent of a conjugated diene (i.e., a butyl rubber) is reacted with a silane having both an alkenyl group as well as at least two silicon-bonded hydrolyzable group, the reaction taking place in the presence of a free-radical generator, to |
| 6380124 |
Metallocene compositions |
April 30, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##whereinM.sup.1 is selected from the group |
| 6380123 |
Metallocene compositions |
April 30, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.In one embodiment, the metallocenes of the present invention may be represented by the formula: ##STR1##wherein:M i |
| 6380122 |
Metallocene compositions |
April 30, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.In one embodiment, the metallocenes of the present invention may be represented by the formula: ##STR1##wherein:M i |
| 6380121 |
Metallocene compositions |
April 30, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.In one embodiment, the metallocenes of the present invention may be represented by the formula: ##STR1##wherein:M i |
| 6380120 |
Metallocene compositions |
April 30, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##wherein M.sup.1 is selected from the group |
| 6376733 |
Process for production of paraxylene |
April 23, 2002 |
| This invention relates to a process and a chemical plant for the production primarily of paraxylene. In particular the process and chemical plant utilise zeolite membranes for enhanced paraxylene production. |
| 6376627 |
Metallocene compositions |
April 23, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##whereinM.sup.1 is selected from the group |
| 6376610 |
Electrical devices including ethylene, alpha-olefin, vinyl norbornene elastomers and ethylene al |
April 23, 2002 |
| Elastomeric polymers including ethylene, alpha-olefin and vinyl norbornene are shown to have improved extrusion characteristics, improved electrical properties, improved cure characteristics compared to ethylene, alpha-olefin, non-conjugated diene elastomeric polymers containing non- |
| 6376598 |
Thermoplastic blend |
April 23, 2002 |
| The invention generally relates to thermoplastic blends having improved properties. Optionally, these blends may be dynamically vulcanized. More specifically, this invention is directed to a composition comprising a blend of chloromethylated(styrene-isobutylene)copolymer and a thermo |
| 6376413 |
Metallocene compositions |
April 23, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.In one embodiment, the metallocenes of the present invention may be represented by the formula: ##STR1##wherein: M |
| 6376412 |
Metallocene compositions |
April 23, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##whereinM.sup.1 is selected from the group |
| 6376411 |
Metallocene compositions |
April 23, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##wherein M.sup.1 is selected from the group |
| 6376410 |
Metallocene compositions |
April 23, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##whereinM.sup.1 is selected from the group |
| 6376409 |
Metallocene compositions |
April 23, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##wherein M.sup.1 is selected from the group |
| 6376408 |
Metallocene compositions |
April 23, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##wherein M.sup.1 is selected from the group |
| 6376407 |
Metallocene compositions |
April 23, 2002 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##whereinM.sup.1 is selected from the group |
| 6374889 |
Tire sidewall compositions |
April 23, 2002 |
| Rubber blends of brominated isobutylene/para-methylstyrene copolymers of 9.5 to 20 weight percent aromatic monomer content and 0.2 to 1.0 mole percent benzylic bromine content. The blends have good cure characteristics, good adhesion and flex crack resistance, as well as ozone resist |
| 6372858 |
Solid nucleophilic reagent for conversion of benzylic halogen functionality on polymers to other |
April 16, 2002 |
| A solid nucleophilic reagent for the conversion of benzylic halogen functionality on polymers to other functionalities, and methods of making and using the same. |
| 6372847 |
Polyolefin compositions having improved low temperature toughness |
April 16, 2002 |
| Disclosed are blends of a propylene-based polymer, an elastomer, and optionally an ethylene-based polymer, having improved low temperature toughness. The elastomer is preferably a copolymer of ethylene, one or more C.sub.3 -C.sub.20 .alpha.-olefin comonomers, and optionally one or mo |
| 6368999 |
Highly active supported catalyst compositions |
April 9, 2002 |
| This invention relates to metallocene catalyst compositions which are highly active for the polymerization of olefins, particularly prochiral .alpha.-olefins. The catalyst compositions contain at least one metallocene, and least one activator and a support that has been fluorided usi |
| 6368545 |
High clarity polyolefin multilayer blown coextruded film |
April 9, 2002 |
| At least two techniques can be used separately or together to achieve higher clarity in multilayer blown coextruded films. In a first technique, the core layer is extruded at a higher temperature than the skin layer or layers. In the second technique, the core layer has a higher density |
| 6368028 |
Conveying systems for compacted, friable solids |
April 9, 2002 |
| A gas conveying system capable of conveying a solids material without pushing or compressing the solids material. The system comprising: at least one conduit assembly comprising a conduit, a lance assembly disposed about a first end of the conduit which is capable of removing the solids |
| 6365767 |
Process for co-production of dialkyl carbonate and alkanediol |
April 2, 2002 |
| A method is provided for co-producing dialkyl carbonate and alkanediol by reacting alkylene carbonate with alkanol in the presence of a zeolite catalyst which contains alkali metal, alkaline earth metal, or a combination thereof present in excess of a stoichiometric amount. |
| 6362294 |
Reduced oxidation state transition metal compounds useful as olefin polymerization catalysts |
March 26, 2002 |
| This invention is directed to reduced oxidation state Group 4-6 metal compounds, preferably the first row metals in those groups, suitable for activation as polymerization catalysts and characterized by comprising a substituted hydrotris(pyrazolyl)borate ancillary ligand and a plurality |
| 6362239 |
Catalysts and processes using them |
March 26, 2002 |
| Co-precipitated CoCuMn and CoCuMg catalysts are used in Fischer-Tropsch synthesis. |
