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| Number | Title | Issue Date |
| 7219804 | Flotation processing including recovery of soluble nonferrous base metal values A method of flotation processing ores and other mineral materials containing soluble nonferrous base metal and sulfide minerals involves dissolving the soluble nonferrous base metal and precipitating the soluble nonferrous base metal in the form of a floatable preci... | 05/22/2007 |
| 6815571 | Method for producing ethylene polymers in a high-pressure process A process for preparing ethylene polymers by the high-pressure method comprises dissolving one or more free-radical initiators in one or more ketones of the formula I where R1 and R2 are identical... | 11/09/2004 |
| 6362377 | Waxes A process for modifying a wax comprising treating a wax to introduce a hydroxyl functionality, said treating being selected from the group consisting of grafting with an allyl alcohol, oxidizing the wax and hydrogenating the oxidized wax, reacting the wax... | 03/26/2002 |
| 6107530 | Use of polyolefin waxes in solvent pastes The present invention relates to the use of polyolefin waxes synthesized by means of metallocene catalysts for the preparation of solvent-containing pastes. The pastes prepared in this way have a significantly higher paste hardness and an improved heat st... | 08/22/2000 |
| 6063880 | Process for the preparation of a polyolefin wax If a catalyst consisting of an aluminoxane and a metallocene of the formula I ##STR1## in particular R5 R6 C (Ind)2 or R5 R6 C (Ind)2 Zr(CH3)2, is employed for th... | 05/16/2000 |
| 5750813 | Process for the preparation of polyolefin waxes A process for the preparation of a polyolefin wax by polymerization or copolymerization of olefins or diolefins in suspension and in the presence of a catalyst. The process utilizes a metallocene and a cocatalyst, wherein the metallocene is a compound of ... | 05/12/1998 |
| 5723705 | Process for the preparation of polyolefin waxes in the presence of a metallocene catalyst and a co-catalyst A process for the preparation of a polyolefin wax by polymerization or co-polymerization of olefines or diolefins at a temperature of -40° to 100° C. at a pressure of 0.5 to 120 bar, in suspension and in the presence of a metallocene catalyst and a co-c... | 03/03/1998 |
| 5345019 | Method of hydrocracking paraffins emanating from the Fischer-Tropsch process using catalysts based on H-Y zeolite A method of hydrocracking charges emanating from the Fischer-Tropsch process, in which: (a) hydrogen is reacted with the charge in contact with a catalyst 1 in a first reaction zone, the said catalyst 1 comprising at least one alumina-based matrix and at ... | 09/06/1994 |
| 5306860 | Method of hydroisomerizing paraffins emanating from the Fischer-Tropsch process using catalysts based on H-Y zeolite For Hydroisomerizering charges emanating from the Fischer-Tropsch process: a) hydrogen is reacted with the charge in contact with a catalyst 1 in a first reaction zone, the catalyst 1 comprising at least one alumina-based matrix and at least one hydro-dehydrog... | 04/26/1994 |
| 5245110 | Process for producing and utilizing an oxygen enriched gas This invention comprises a method and apparatus for obtaining from air an oxygen enriched gas mixture containing at least 40 mole % nitrogen. The apparatus comprises a gas turbine, an oxygen separation unit which is in fluid communication with the turbine... | 09/14/1993 |
| 5157189 | Conversion of light hydrocarbons to higher hydrocarbons A process is disclosed for catalytically converting light hydrocarbons, such as natural gas, to saturated or unsaturated higher molecular weight hydrocarbons, such as ethylene, propylene, ethyl benzene, and styrene. The process employs gaseous catalyst or... | 10/20/1992 |
| 5081322 | Polypropylene wax and process for the production thereof Polyolefin waxes are obtained in high yield by copolymerizing propylene with small amounts of other olefins in the presence of a catalyst composed of a metallocene of the formula I: ##STR1## and an alumoxane. The waxes are produced as compact, spheri... | 01/14/1992 |
| 4962248 | 1-olefin stereoblock polymer wax, and a process for the preparation thereof 1-Olefin stereoblock polymer waxes having a very narrow molecular weight distribution are obtained by means of a catalyst which comprises a metallocene compound containing cyclopentadienyl radicals substituted by chiral groups, and an aluminoxane, in the ... | 10/09/1990 |
| 4124753 | Process for the preparation of ethylene polymer telomer waxes employing non-toxic 2-t-butylazo-2-cyanobutane at about 140° C giving high production rates and lower reactor fouling In the production of ethylene polymer and copolymer telomer waxes by vapor phase polymerization at elevated temperatures and pressures in the presence of a free radical initiator, improved production rates of more linear wax products with reduced reactor ... | 11/07/1978 |
| 4060569 | Hydrocarbon polymers This invention relates to hydrocarbon polymers having lower penetration or greater hardness (H), greater viscosities (V), higher molecular weights (MW), but having melting points (MP) and congealing points (CP) which are essentially no higher, but prefera... | 11/29/1977 |
| 4049893 | Hydrogenated waxy olefin and process of making same This invention relates to a substantially hydrogen saturated hydrocarbon product formed by the hydrogenation of waxy polyethylene alpha-olefin having an average molecular weight of about 350 to about 900. The hydrogenation is conducted at pressures rangin... | 09/20/1977 |
| 3997624 | Polyethylene waxes Low molecular weight ethylene homo and copolymer waxes are prepared at pressures below 1000 psi and at temperatures below 120° C. using free radical catalysts having 10-hour half-lifes at not over 60° C.... | 12/14/1976 |
| 3933934 | Fabrication of atactic waxes of polyolefin Atactic waxes and method for preparing same by polymerization of polyolefin alone or in combination with other monoolefins of the formula CH2 = CHR in which R is hydrogen or an alkyl radical having from 2 to 8 carbon atoms in which the polymeri... | 01/20/1976 |
