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| Number | Title | Issue Date |
| 7763686 | Process for producing polyalkenyl ether Polyalkenyl ether is produced by polymerizing alkenyl ether represented by the following general formula (I): CHR1═CH(OR2) (I) wherein R1 represents a hydrogen atom or a methyl group, R2 represen... | 07/27/2010 |
| 7361619 | Fischer-Tropsch catalyst production Dispersed Active Metal catalyst for hydrogenation reactions is produced by treating a substantially catalytically inactive metal particulate with a solution capable of oxidizing the metal particulate and comprising of at least one compound of a hydrogenation catalys... | 04/22/2008 |
| 7309740 | Biaxially oriented polypropylene film A biaxially stretched polypropylene film of the present invention has high stiffness in the film longitudinal direction and can be manufactured by a conventional longitudinal-transverse sequential biaxial stretching method, since the biaxially stretched polypropylen... | 12/18/2007 |
| 7223519 | Imaging compositions and methods Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be applied to... | 05/29/2007 |
| 7144676 | Imaging compositions and methods Imaging compositions and methods of using the compositions are disclosed. The imaging compositions are sensitive to low levels of energy such that upon application of the low levels of energy the compositions change color or shade. The compositions may be applied to... | 12/05/2006 |
| 7094823 | Composition and method for catalysis using bentonites Maghnia or Mostaganem bentonites, are activated by contacting the Maghnia or Mostaganem bentonite with an acid solution of selected concentration and then drying the Maghnia or Mostaganem bentonite to form an activated bentonite catalyst. This activated bentonite ca... | 08/22/2006 |
| 6977235 | Catalyst systems comprising a calcined chromium catalyst and a non-transition metal cyclopentadienyl cocatalyst According to an embodiment, catalyst systems for polymerizing olefins include a catalyst comprising chromium and a cocatalyst comprising a substituted or unsubstituted non-transition metal cyclopentadienyl compound (Cp). The catalyst also comprises an inorganic oxid... | 12/20/2005 |
| 6838486 | Preparation of metal nanoparticles and nanocomposites therefrom Disclosed are nanocomposites made of guest metal nanoparticles and metal oxide sols made by mixing at least one metal alkoxide, at least one organosilane, at least one boron oxide compound, and a liquid. Also disclosed are dielectric composites containing a dielectr... | 01/04/2005 |
| 6639031 | Coreactive supporting materials for heterogenization of catalysts, cocatalysts and ligands The invention relates to a process for preparing a support material having an increased number of reactive groups and to a process for preparing coreactive surfaces that may have catalytic or cocatalytic properties.... | 10/28/2003 |
| 6632897 | Use of nano-scaled metal oxide particles as polymerization catalysts Described is the use of nanoscale metal oxide particles as catalysts for the thermal and/or photochemical polymerization of species having at least one polymerizable carbon-carbon multiple bond and/or at least one carbon containing ring capable of undergo... | 10/14/2003 |
| 6610802 | Process for synthesis of polymer compositions, polymer compositionS obtainable by the process, and use of the same The present invention relates to a process for synthesis of polymer compositions with reduced catalyst content, wherein ethylenically unsaturated monomers containing less than 0.5 wt % of ethylenically unsaturated monomers with at least one carboxylic gro... | 08/26/2003 |
| 6610400 | Sizing compositions, methods and apparatus for cleaning sized fiber glass strands, yarns and fabrics The disclosed invention relates generally to sizing compositions, methods and apparatus for cleaning sized fiber glass strands, yarns and fabric without the use of high temperature thermal processes. More specifically, the invention relates to sizing comp... | 08/26/2003 |
| 6555640 | Process for producing metal-containing resin and composition thereof Process that is capable of synthesizing a metal-containing resin having a good antifouling property in a short period of time without having such problems associated with the synthesis as gelation. The process for producing a metal-containing resin by con... | 04/29/2003 |
| 6518375 | Catalyst for the production of ethylene polymer and process for producing ethylene polymer A catalyst for the production of an ethylene polymer comprising a specific trivalent alkyl chromium compound, an inorganic oxide solid and optionally an organoaluminum compound (first catalyst), a catalyst for the production of an ethylene polymer compris... | 02/11/2003 |
| 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 |
| 6433237 | Iron-based catalyst composition for producing oligomers of conjugated dienes A catalyst composition that is the combination of or the reaction product of ingredients comprising (a) (i) a halogen-containing iron compound or (ii) an iron-containing compound and a halogen-containing compound, (b) a silyl phosphonate, and (c) an organ... | 08/13/2002 |
| 6403745 | Gradient copolymers, as well as a method for their preparation and their use This invention concerns gradient copolymers, that are obtainable by polymerizing a mixture of olefinically unsaturated monomers that consist of a) 0 to 40% by weight of one or more ethylenically unsaturated ester compounds of formula (I) ##STR1## whe... | 06/11/2002 |
| 6403746 | Method for preparation of a composition that contains polymer ester compounds with long-chain alkyl residues and use of this composition This invention concerns a method for preparation of poly(meth)acrylate composition, in which ethylenically unsaturated monomers are polymerized by means of initiators that have a transferable atomic group, and one or more catalysts that include at least o... | 06/11/2002 |
| 6348554 | Method for preparation of a liquid polymer composition and use of this composition The invention concerns a method for preparation of a liquid polymer composition, where ethylenically unsaturated monomers are polymerized by means of initiators that have a transferable atomic group, and one or more catalysts that contain at least one tra... | 02/19/2002 |
| 6316553 | Process for producing polymers using a composition comprising an organometal compound, a treated solid oxide compound, and an organoaluminum compound A process of using a catalyst composition to polymerize at least one monomer to produce a polymer. The process comprising contacting the catalyst composition, at least one monomer in a polymerization zone under polymerization conditions to produce the pol... | 11/13/2001 |
| 6316235 | Preparation and use of magnetically susceptible polymer particles Polymer particles are formed containing molecular memory recognition sites and magnetically susceptible components. The particles are prepared by co-polymerizing one or more monomers and a cross-linking agent in the presence of at least one imprint molecu... | 11/13/2001 |
| 6265501 | Treatment of metathesis catalysts for olefins in a vibratory helicoidal conveyor A process for treatment of metathesis catalysts for olefins comprises sending the particles of catalysts through at least one vibratory helicoidal conveyor, subject the particles over at least a portion of their path and preferably over a large portion of... | 07/24/2001 |
| 6242543 | Process for producing polyethylenes having a broad molecular weight distribution, and a catalyst system used thereby A process for the polymerization of ethylene and optionally -olefins to form ethylene homopolymer or copolymers having a broad molecular weight distribution, comprising polymerization of 100-80 wt. % of ethylene and 0-20 wt. % of comonomer in the p... | 06/05/2001 |
| 6225421 | Process for the manufacture of a composition comprising ethylene polymers Process for the manufacture of a composition comprising ethylene polymers, in at least two polymerization reactors connected in series, according to which, in a first reactor, from 30 to 70% by weight with respect to the total weight of the composition of... | 05/01/2001 |
| 6111037 | Silica-modified aluminophosphate compositions, catalysts, method of preparing same and polymerization processes An amorphous aluminophosphate composition is provided which exhibits a microstructure of sheets and spheres of silica-modified aluminophosphate. Also provided is a method for preparing the composition comprising mixing an aqueous solution containing alumi... | 08/29/2000 |
| 6077809 | Method for the preparation of a high-porosity adsorbent loaded with crystalline hydrous zirconium oxide A novel high-porosity adsorbent material for selective adsorption of fluoride ions, arsenic ions and phosphate ions as well as a method for the preparation thereof are disclosed. The adsorbent material consists of a porous carrier material such as crossli... | 06/20/2000 |
| 5965675 | Polymerization processes A polymerization process is provided comprising contacting under polymerization conditions a catalyst, a taming agent, ethylene and optionally a comonomer, wherein the catalyst comprises chromium oxide, titanium oxide and an inorganic refractory oxide, wh... | 10/12/1999 |
| 5962608 | Polymers made with metal oxide sols In one embodiment, the present invention relates to a polymer prepared from a mixture containing a polymerization material and a polycondensation product of a partially hydrolyzed chelated metal oxide precursor. In another embodiment, the present inventio... | 10/05/1999 |
| 5508362 | Chromium catalyst compositions and polymerization processes therewith Chromium catalyst compositions are provided. These chromium catalyst compositions comprise at least two chromium catalyst systems that have a certain amount of chromium and a support that comprises silica and titania. the supports have certain pore volume... | 04/16/1996 |
| 5486584 | Chromium catalyst compositions Chromium catalyst compositions are provided. Theses chromium catalyst compositions can be used to polymerized olefins. The resulting polymerization product can have improved properties.... | 01/23/1996 |
| 5283300 | Process for preparing polyolefin fluff using metallocene catalyst Olefin polymers and copolymers having controlled morphology are prepared by bulk or slurry polymerization using metallocene catalysts in the presence of an alumoxane cocatalyst. Prepolymerization at a temperature of -10° C. to +35° C. during 1.5 to 3.5 ... | 02/01/1994 |
| 5216102 | Process for producing polyacetylene The present invention provides a process for producing a polyacetylene. In the present process for producing a polyacetylene, acetylene is polymerized with a Ziegler-Natta catalyst consisting of a trialkylaluminum and an alkyl titanate, wherein there is used, ... | 06/01/1993 |
| 5013768 | Photopolymerizable coating composition and process for forming a coating having a stereoscopic pattern A photopolymerizable coating composition comprising: (A) 100 parts by weight of a vehicle consisting essentially of a urethaneacrylate oligomer; (B) from 0.1 to 5 parts by weight of an acylphosphine oxide compound as a photoinitiator; (C) from 1 to 100 parts b... | 05/07/1991 |
| 4954562 | Water absorbent resins Improved water-absorbing, crosslinked acrylate resins are prepared by aqueous polymerization of (A) acrylic acid neutralized 70 to 100 mole percent for example with ammonia and/or caustic alkali and/or an amine; with (B) acrylamide in a mole ratio of 70 t... | 09/04/1990 |
| 4923935 | Process for producing polyethylene of ultrahigh molecular weight A process for producing polyethylene of ultrahigh molecular weight having an intrinsic viscosity of 10-30 dl/g at 135° C. in decalin is disclosed which comprises at least the following two stages of polymerization reaction: (a) a first reaction stage whe... | 05/08/1990 |
| 4444962 | Polymerization process using catalysts with acid gelled aluminum phosphate base Aluminum orthophosphate is prepared by combining a source of phosphate ions with an aluminum salt to form a concentrated mass, combining with sufficient neutralizing agent to partially neutralize, and aging until gellation occurs. The resulting aluminum p... | 04/24/1984 |
| 4442274 | Polymerization process using a phosphate containing support for vanadium catalyst A supported vanadium catalyst comprising a vanadium compound on a phosphate-containing base. This catalyst in conjunction with an organoaluminum cocatalyst is capable of giving good activity and producing a polymer having broad molecular weight distributi... | 04/10/1984 |
| 4239872 | Olefine polymerization with supported catalysts Polymerization catalysts are prepared by impregnation of a silica or aluminum support with a vanadium, titanium and/or chromium salt decomposable upon calcination to the oxide, calcining the impregnated support at about 500°-700° C., impregnating the ca... | 12/16/1980 |
| 4184979 | Catalyst and process of preparing the catalyst A catalyst for polymerizing one or more 1-olefins and prepared by the process of (1) forming an initial mixture of a finely divided support such as silica and a chromium+3 compound of either of the formulas ##STR1## or Cr(OOCR)3... | 01/22/1980 |
| 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 |
