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| Number | Title | Issue Date |
| 7172741 | Method for reprocessing spent nuclear fuel It is an object to increase a reprocessing speed of spent nuclear fuel and to obtain uranium having a high purity and a plutonium mixture reusable as it is at a low cost through a simple procedure. The spent nuclear fuel 1 is subjected to fluorination ... | 02/06/2007 |
| 7090813 | Method for producing cyclic chlorophosphazene oligomers The present invention provides a method for producing cyclic chlorophosphazene oligomers, in particular the trimer and tetramer, in a high yield and selectivity. The method for producing cyclic chlorophosphazene oligomers involves the reaction between chlorinated ph... | 08/15/2006 |
| 7040195 | Roof rake system A roof rake system comprises a handle having an upper end and a lower end. A head has an interior region, an exterior region, and an intermediate region. The interior region securely receives the lower end of the handle. The exterior region is cylindrically shaped o... | 05/09/2006 |
| 6685904 | Process for making phosphorus halides and oxyhalides Disclosed is a process for producing phosphorous trichloride, phosphorous pentachloride, or phosphorous tribromide by reacting phosphine gas with chlorine gas or bromine gas, in a mixture with hydrogen gas. The phosphine is dried and the reaction is perfo... | 02/03/2004 |
| 6409978 | Method of removing impurities from mineral concentrates A process for removing impurities contained in the crystal lattice of minerals, comprising the steps of forming a mixture of a mineral capable of structurally reorganizing its crystal lattice which contains an impurity in its crystal lattice and a halogen... | 06/25/2002 |
| 6406677 | Methods for low and ambient temperature preparation of precursors of compounds of group III metals and group V elements Processes are provided for preparation of precursors of Group III-V compounds, i.e., nitrides, phosphides, arsenides, antimonides and bismuthides of boron, aluminum, gallium and indium. The precursors are easily converted, e.g., by thermal decomposition, ... | 06/18/2002 |
| 6350891 | Method for making a catalyst composition Phosphonitrile halides are prepared employing the use of disilazanes. The resultant products may be further reacted with cyclosiloxanes to form siloxane containing phosphonitrile halides.... | 02/26/2002 |
| 6309619 | Solid state synthesis of poly(dichlorophosphazene) A method for making poly(dichlorophosphazene) using solid state reactants is disclosed and described. The present invention improves upon previous methods by removing the need for chlorinated hydrocarbon solvents, eliminating complicated equipment and sim... | 10/30/2001 |
| 6306308 | Inorganic composition, process of preparation and method of use A coagulant which is the reaction product of a trivalent metal salt (eg., FeCl3), excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effecti... | 10/23/2001 |
| 6251350 | Process for the manufacture of thiophosphoryl chloride The present invention relates to an improved process for the preparation of thiophosphoryl chloride which is useful as an intermediate for the synthesis of insecticidally active compounds. The improvement comprises the presence in the reaction mixture of ... | 06/26/2001 |
| 6211397 | Process for the preparation of -chloromethylene-triorganylphosphorane derivatives A process for the preparation of -chloromethylene-triorganylphosphorane derivatives I ##STR1## (radicals R are C-organic substituents and A stands for CN or CO-B where B is a C-organic or O-organic radical which is inert under chlorination con... | 04/03/2001 |
| 6090353 | Method of removing impurities from mineral concentrates A process for removing impurities contained in the crystal lattice of minerals, comprising the steps of forming a mixture of a mineral capable of structurally reorganizing its crystal lattice which contains an impurity in its crystal lattice and a halogen... | 07/18/2000 |
| 6019955 | Active nickel hydroxide material having controlled water content An nickel hydroxide positive electrode active material which can be made by an ultrasonic precipitation method. The nickel hydroxide active material is characterized by the composition: ##EQU1## where x, the number of water ligands surrounding each N... | 02/01/2000 |
| 5993609 | Process for the purification of phosphorus oxychloride A process for the purification of recovered or regenerated phosphorus oxychloride contaminated by reactive organic compounds, by reacting the contaminated phosphorus oxychloride with from 0.1 to 5% by weight of an organic amine, having 1 or 2 tertiary N-a... | 11/30/1999 |
| 5962028 | Carbonated hydroxyapatite compositions and uses Carbonated hydroxyapatite compositions and their preparation are described. The compositions are biologically resorbable and are prepared as flowable masses which can be administered by syringe to set in situ to serve as a support structure, filler, prost... | 10/05/1999 |
| 5952010 | Paste compositions capable of setting into carbonated apatite Carbonated hydroxyapatite compositions and their preparation are described. The compositions are biologically resorbable and are prepared as flowable masses which can be administered by syringe to set in situ to serve as a support structure, filler, prost... | 09/14/1999 |
| 5911962 | Process for the purification of phosphorus oxychloride Impure POCl3 is purified by distillation in the presence of high-boiling nitrogen compounds from the group consisting of the substituted pyridines and pyrimidines, the open-chain and cyclic aliphatic amines, the open-chain and cyclic amidines, ... | 06/15/1999 |
| 5869016 | Production of polyorganophosphazenes having desired molecular weights A method for producing a polyorganophosphazene, such as, for example, polydi(carboxylatophenoxy)phosphazenel!, from polydichlorophosphazene. The polydichlorophosphazene is reacted with at least one nucleophilic reagent at a defined molar ratio of the at... | 02/09/1999 |
| 5855809 | Electrochemically stable electrolytes This invention relates generally to inorganic ionic liquids which function as electrolytes and do not crystallize at ambient temperature. More specifically, this invention is directed to quasi-salt inorganic ionic liquids which comprise the reaction produ... | 01/05/1999 |
| 5824433 | High conductivity electrolyte solutions and rechargeable cells incorporating such solutions This invention relates generally to electrolyte solvents for use in liquid or rubbery polymer electrolyte solutions as are used, for example, in electrochemical devices. More specifically, this invention relates to sulfonyl/phospho-compound electrolyte so... | 10/20/1998 |
| 5733204 | Flex top putter grip A flex top putter grip for use in association with a golf club, the apparatus comprises a golf club grip fabricated of semi-rigid elastomeric materials including a top, a bottom, a front surface, a rear surface and two side surfaces, the side surfaces hav... | 03/31/1998 |
| 5716589 | Method for making reaction products of phosphorus pentachloride and ammonium chloride The reaction of phosphorus pentachloride with ammonium chloride is conducted in the presence of a metal-containing catalyst and carbon dioxide, preferably supercritical carbon dioxide, as a solvent. The product is generally superior in catalytic action fo... | 02/10/1998 |
| 5707597 | Polyhalophosphazene solutions stable against gelation A solution which comprises a polyphosphazene solute, such as a polyhalophosphazene solute, and a stabilizing solvent such as diglyme. Such solution enables the polyphosphazene to remain stable for extended periods of time so that such polyhalophosphazenes... | 01/13/1998 |
| 5498400 | Preparation of thionyl chloride and phosphorus oxyhloride from sulfur dioxide A process to manufacture high purity thionyl chloride and phosphorus oxychloride utilizing a fluctuating flow of sulfur dioxide. Chlorine, sulfur dioxide, and phosphorus trichloride are reacted in a process that limits the amount of sulfuryl chloride and/... | 03/12/1996 |
| 5464600 | Amine catalyzed reaction in the production of thiophosphoryl chloride Disclosed herein is an improved process for preparing a thiophosphoryl chloride comprising reacting sulfur with a phosphorous trichloride, the improvement comprising a catalytic amount of a tertiary amine catalyst.... | 11/07/1995 |
| 5430234 | Process for removing phosphorus and heavy metals from phosphorus trichloride still bottoms residue Unreacted phosphorus and heavy metals, such as arsenic and antimony, are removed in environmentally acceptable form from the non-aqueous still bottoms residue resulting from the production of PCl3, by reacting the residue with an excess of calc... | 07/04/1995 |
| 5403909 | Catalysts for polycondensation and redistribution of organosiloxane polymers Short-chain linear phosphazenes as well as products of their reactions with water, alcohols and organosiloxanes, and the like, are active catalysts for polycondensation and redistribution of organosiloxane polymers.... | 04/04/1995 |
| 5340557 | 32 P thiophosphate preparation 32 P-Thiophosphates of the general formula: ##STR1## wherein n =1, 2 or 3 and each M, which may be the same or different, is H or a cation, are prepared by heating H332 PO4 or a salt thereof with at least a... | 08/23/1994 |
| 5310529 | Process for preparing phosphorus trichloride There is disclosed an improved process for the preparation of phosphorus trichloride wherein elemental phosphorus is caused to react with chlorine. The improvement comprises continuous, high speed analysis of the contents of the reactor whereby the reacti... | 05/10/1994 |
| 5252306 | Semi-continuous process for preparing phosphorus trichloride There is disclosed an improved process for the semi-continuous production of phosphorus trichloride by the reaction of elemental phosphorus and chlorine in a liquid phosphorus trichloride layer. In accordance with the present invention periodic terminatio... | 10/12/1993 |
| 5230875 | Poly(dichlorophosphazenes)/poly(organophosphazenes) having regulated molecular weights The molecular weights of the poly(dichlorophosphazenes), and of the poly(organophosphazenes) produced therefrom, are controlledly regulated by heating such poly(dichlorophosphazenes) in the presence of an effective molecular weight-regulating amount of ph... | 07/27/1993 |
| 5183649 | Production of phosphorus compounds Chlorophosphorus compounds are produced in a loop apparatus wherein chlorine is added to a recycling medium comprising chlorophosphorus compound and elemental phosphorus.... | 02/02/1993 |
| 5152971 | Production of high molecular weight, essentially uncrosslinked polychlorophosphazenes High molecular weight, essentially uncrosslinked polychlorophosphazenes are prepared by bulk polycondensing a monomer of the formula P2 NXCl2, in which X is an oxygen or sulfur atom, e.g., N-dichlorophosphoryl- or N-dichlorothiophosp... | 10/06/1992 |
| 5147622 | Method for stabilizing phosphorus trichloride The invention relates to a method for the stabilization of phosphorus trichloride, wherein one or more derivatives of dithiocarbamic acids are added to the phsophorus trichloride. As derivatives, salts, esters or thiuram sulfides of the dithiocarbamic aci... | 09/15/1992 |
| 5147621 | Method for stabilizing phosphorus trichloride The invention relates to a method for stabilizing phosphorus trichloride. In order to delay the formation of phosphorus oxychloride in phosphorus trichloride and to reduce it to a minimum value which no longer adversely affects further processing, one or ... | 09/15/1992 |
| 5132389 | Polycondensation of impure P2 NOCl5 into uncrosslinked poly(dichlorophosphazenes) in the presence of PCl5 The polycondensation disrupting effects of the impurities in an impure N-dichlorophosphoryltrichlorophosphazene, P2 NOCl5, or oligomer thereof, are avoided by polycondensing such impure P2 NOCl5 into a high mole... | 07/21/1992 |
| 5030430 | Preparation of phosphates by induction melting Phosphates, e.g., the polyphosphates and halophosphates, are prepared in high purity by melt thermocondensing corresponding precursors thereof, e.g., salts of orthophosphoric, pyrophosphoric or metaphosphoric acid, via electromagnetic induction heating, f... | 07/09/1991 |
| 5006324 | Polymerization of phosphonitrilic chloride High molecular weight phosphonitrillic chloride polymers that are soluble in benzene, toluene and tetrahydrofuran, tetrameric phosphonitrilic chloride, or mixtures thereof at elevated temperatures in the presence of a catalytic amount of an aprotic Lewis ... | 04/09/1991 |
| 4902490 | Essentially pure/colorless P2 NOCl5 Essentially pure and colorless N-(dichlorophosphoryl)trichlorophosphazene [P2 NOCl5 ] is prepared/purified under relatively moderate conditions, by reacting phosphorous pentachloride with ammonium chloride, treating the resulting med... | 02/20/1990 |
| 4867957 | Process for making polyphosphazenes The invention is a continuous polymerization process for producing high molecular weight linear poly(dichlorophosphazene) polymers in dilute solution. Substantially pure cyclic oligomers represented by the formula (NPCl2)n are polyme... | 09/19/1989 |
