| Patent Number |
Title Of Patent |
Date Issued |
| 6313360 |
Process for the manufacture of 1, 1, 1, 3, 3-pentachloropropane |
November 6, 2001 |
| A process is provided for the production of 1,1,1,3,3-pentachloropropane. The process comprises: (a) producing a product mixture in a reactor by reacting carbon tetrachloride and vinyl chloride in the presence of a catalyst mixture comprising organophosphate solvent, iron metal and ferri |
| 5984993 |
Method and composition for odor control |
November 16, 1999 |
| A method and composition are provided for controlling odor from waste products. The composition comprises a combination of chlorite salt and nitrate salt. The method includes the step of contacting the waste products or their surrounding airspace with the composition. |
| 5843315 |
System and method for recovering aggregate fine size particles |
December 1, 1998 |
| Provided is a novel method and system for recovering aggregate fine size particles from a carrying medium. The method comprises:(a) introducing a feed containing particles to a sand screw, and separating the particles into separate groups of large and fine particles, the fine particles b |
| 5827809 |
Low-residue macroemulsion cleaner with perchloroethylene |
October 27, 1998 |
| A stable, oil-in-water macroemulsion cleaner is provided which has low toxicity, rapid evaporation rate and leaves low residue after use. The cleaner comprises perchloroethylene, water, ethanol and/or ethyl acetate, and non-ionic surfactant. The macroemulsion cleaner can be used to remov |
| 5792893 |
Method for the manufacture of 1,1,1,3,3,3-hexachloropropane |
August 11, 1998 |
| A novel method for manufacturing 1,1,1,3,3,3-hexachloropropane. Tetrachloromethane is reacted with 1,1-dichloroethene in the presence of a catalyst comprising copper and a solvent selected from a C3 to a C5 alkanenitrile. The 1,1,1,3,3,3-hexachloropropane can be separated from the re |
| 5741346 |
Mineral and organic fertilizer |
April 21, 1998 |
| The present invention relates to an agricultural fertilizer prepared from animal waste, rock fines, and optionally other ingredients to improve its performance. The process for preparing this fertilizer is within the scope of this invention. |
| 5683670 |
Method for increasing the production capacity of sulfuric acid plants and processes |
November 4, 1997 |
| A process for removing SO.sub.2 from a gas mixture including SO.sub.3 and SO.sub.2 having a volume ratio of SO.sub.3 to SO.sub.2 greater than 1. The process includes intimately contacting the gas mixture in a contacting zone, removing a stream of purified gas containing less SO.sub.2 tha |
| 5593652 |
Method for increasing the production capacity of sulfuric acid plants and processes |
January 14, 1997 |
| A process for removing SO.sub.2 from a gas mixture including SO.sub.3 and SO.sub.2 having a volume ratio of SO.sub.3 to SO.sub.2 greater than 1. The process includes intimately contacting the gas mixture in a contacting zone, removing a stream of purified gas containing less SO.sub.2 tha |
| 5536891 |
Purification of 1,1,1,-trichloroethane |
July 16, 1996 |
| A process for the purification of 1,1,1-trichloroethane contaminated with at least one undesirable C.sub.1 -C.sub.3 chlorocarbon, for example, 1,2-dichloroethane, 1,2-dichloroethylene and/or trichloroethylene, which process comprises contacting the impure 1,1,1-trichloroethane with a |
| 5426256 |
Minimizing heavy ends production in the manufacture of perchloroethylene from hydrocarbons or pa |
June 20, 1995 |
| Perchloroethylene and hydrogen chloride are made by thermal noncatalytic chlorination of hydrocarbons and/or their partially chlorinated derivatives using carbon tetrachloride as a reactive diluent under conditions which maximize consumption of carbon tetrachloride and minimize the p |
| 5399797 |
Manufacture of perchloroethylene by chlorinating hydrocarbons and partially chlorinated hydrocar |
March 21, 1995 |
| Perchloroethylene and hydrogen chloride are made by noncatalytic thermal chlorination of hydrocarbons and/or their partially chlorinated derivatives by reacting them with chlorine in the presence of hydrogen and carbon tetrachloride as a reactive diluent, under conditions which maxim |
| 5315050 |
Manufacture of perchloroethylene from carbon tetrachloride in the presence of hydrogen |
May 24, 1994 |
| Perchloroethylene and hydrogen chloride are made by thermal noncatalytic pyrolysis of carbon tetrachloride in the presence of elemental hydrogen and chlorine under conditions which maximize consumption of carbon tetrachloride while minimizing the production of heavy ends. |
| 5192733 |
Oxychlorination catalysts comprising copper chloride supported on rare-earth-modified alumina, p |
March 9, 1993 |
| A superior catalyst for the oxychlorination of C.sub.2 hydrocarbon feeds comprises a mixture of copper chloride and alkali metal chloride, especially potassium chloride, and preferably also magnesium chloride, which mixture is deposited on an alumina support that has been thermally s |
| 5114495 |
Use of azeotropic compositions in vapor degreasing |
May 19, 1992 |
| A vapor cleaning process for cleaning soil from solid articles comprising the use of an azeotropic vapor mixture of perchloroethylene and water as the cleaning agent which condenses on the articles and thus cleans them. Liquid perchloroethylene and water are placed in a lower portion of |
| 5113027 |
Oxychlorination process using a catalyst which comprises copper chloride supported on rare-earth |
May 12, 1992 |
| A superior catalyst for the oxychlorination of C.sub.2 hydrocarbon feeds comprises a mixture of copper chloride and alkali metal chloride, especially potassium chloride, and preferably also magnesium chloride, which mixture is deposited on an alumina support that has been thermally s |
| 5098878 |
Oxychlorination catalyst compositions and process of making same |
March 24, 1992 |
| A superior catalyst for the oxychlorination of C.sub.2 hydrocarbon feeds comprises a mixture of copper chloride and alkali metal chloride, for instance, potassium chloride, and preferably also magnesium chloride, which mixture is deposited on an alumina support having a surface area in |
| 4922043 |
Manufacture of methyl chloride by hydrochlorinating methanol, using a split methanol feed |
May 1, 1990 |
| In a process for making methyl chloride by the catalytic hydrochlorination of methanol in the liquid phase, the common formation of unwanted dimethyl ether by-product is reduced by conducting the process in at least two reactors operating in series and by introducing all or substantially |
| 4917544 |
Methods and apparatus for pneumatically transferring a flowable product |
April 17, 1990 |
| Caustic soda beads are transferred from a railcar to a receiving zone by means of an open loop air circuit. Ambient air is compressed in the circuit to a pressure of at least 75 psig in a compressor which simultaneously demoisturizes the air. Thereafter, the air is delivered to a dry |
| 4463200 |
Process for the production of perchloroethylene by catalytic oxychlorination |
July 31, 1984 |
| The production of undesirable 1,1,2-trichloroethane and unsym-tetrachloroethane during the production of perchloroethylene is eliminated or essentially eliminated by an improved oxychlorination reaction. The oxychlorination reaction is carried out in the presence of a copper chloride |
| 4412086 |
Process for separating ferric iron from chlorinated hydrocarbons |
October 25, 1983 |
| Ferric iron is removed from chlorinated hydrocarbons having less than 6 carbon atoms per molecule by intimately contacting the latter with an oil that comprises one or more hydrocarbons having at least 6 concatenated aliphatic carbon atoms per molecule. The hydrocarbon oil is present in |
| 4383715 |
Wall brush |
May 17, 1983 |
| A wall brush for dislodging loose matter from a wall face is disclosed. A plurality of x-shaped scraper elements are disposed in a plurality of beams such that end portions of each scraper element project through flange portions of its beam. An anchor chain flexibly suspends the beams. |
| 4366130 |
Process for removing residual hydrazine from caustic solutions |
December 28, 1982 |
| In a process for manufacturing food-grade caustic such as sodium hydroxide wherein hydrazine or a derivative or salt thereof is used as a corrosion inhibitor, residual hydrazine is removed from the concentrated caustic product solution by oxidation. The oxidation of residual hydrazine is |
| 4331518 |
Bismuth composition, method of electroplating a tin-bismuth alloy and electroplating bath theref |
May 25, 1982 |
| An improved electrotinplating process and acidic electroplating bath therefor is disclosed. The acidic electroplating bath contains tin ions and a chelate salt comprising an acid bismuth sulfate gluconate. An improved electrotinplating process is therefore provided which produces an |
| 4330377 |
Electrolytic process for the production of tin and tin products |
May 18, 1982 |
| Tin ions are provided to the electrolyte-containing cathode compartment of an electrolysis cell in which the anode and cathode compartments are separated by a cationic permselective membrane. The anolyte is generally a mineral acid or tin salt thereof. Operation of the electrolysis cell |
| 4307261 |
Process for separating ferric iron from chlorinated hydrocarbons |
December 22, 1981 |
| Ferric iron is removed from chlorinated hydrocarbons having less than 6 carbon atoms per molecule by intimately contacting the latter with an oil that comprises one or more hydrocarbons having at least 6 carbon atoms per molecule. The hydrocarbon oil is present in an amount sufficient to |
| 4291009 |
Catalytic process for the production of alkali metal stannates |
September 22, 1981 |
| Tin salts, such as, for example, alkali metal stannates, are produced by contacting at elevated temperatures an aqueous alkaline solution, such as for example, alkali metal hydroxide solutions, with a tin-containing material in the presence of a reaction promotor comprising the combinati |
| 4289587 |
Stabilization of chlorinated phenols |
September 15, 1981 |
| Chlorinated phenols, e.g. pentachlorophenol, are stabilized against degradation, including degradation to chlorinated dibenzo-p-dioxins, caused by heat and other adverse conditions, by combining with them stabilizing amounts of at least one stabilizer selected from the group consisti |
| 4282178 |
Use of hydrazine compounds as corrosion inhibitors in caustic solutions |
August 4, 1981 |
| The addition of a small amount of hydrazine or a derivative or salt thereof serves to inhibit the corrosive effect of caustic such as sodium hydroxide on metal surfaces during the manufacture of the caustic or in processes using same. For instance, aqueous sodium hydroxide solutions havi |
| 4234403 |
Electrolytic process for the production of stannous chloride products |
November 18, 1980 |
| A mixture of stannic and chloride ions having a chloride to tin ratio of at least 4:1 (e.g., stannic anion complexes) is provided to the cathode compartment of an electrolysis cell in which the anode and cathode compartments are separated by a cationic permselective membrane. The ano |
| 4162205 |
Method of electroplating tin and alkaline electroplating bath therefor |
July 24, 1979 |
| An improved electrotinplating process and electroplating bath therefor is disclosed. The electroplating bath contains tin ions, an alkali metal hydroxide, and a bismuth compound selected from the group consisting of at least one alkali metal bismuth salt of a linear polyhydroxymonocarbox |
| 4016047 |
Separation and recovery of polychlorinated phenols |
April 5, 1977 |
| Polychlorinated phenols (e.g., pentachlorophenol) of improved color are made by vacuum distilling polychlorinated phenols containing dark color-forming impurities in the presence of a color inhibitor such as free radical-acting substances (e.g., free radical-acting compounds of the p |
| 4010017 |
Recovery of hydrogen chloride from chlorinated hydrocarbons such as chloromethanes |
March 1, 1977 |
| High purity hydrogen chloride is recovered from a gaseous product stream consisting essentially of hydrogen chloride and at least one chlorinated hydrocarbon of from one to two carbon atoms, such as the chloromethanes, by a process which has significantly lowered refrigeration requiremen |
| 3989807 |
Low temperature catalytic oxidation of chlorinated compounds to recover chlorine values using ch |
November 2, 1976 |
| Substantially all of the chlorine values, e.g., chlorine, are recovered from reactant feeds of chlorinated organic compounds, e.g., hexachlorobenzene and hexachlorobutadiene, by an improved process involving catalytic oxidation at temperatures below 500.degree. C and more typically b |
| 3989806 |
Low temperature catalytic oxidation of chlorinated organic compounds to recover chlorine values |
November 2, 1976 |
| Substantially all of the chlorine values, e.g., chlorine, are recovered from reactant feeds of chlorinated organic compounds, e.g., hexachlorobenzene and hexachlorobutadiene, by catalytic oxidation at temperatures below about 500.degree. C through the use of transition metal-containi |
| 3975348 |
Water-extended polyesteramide resins and methods for their production |
August 17, 1976 |
| Water-extended polyesteramides are produced by forming a water-in-oil emulsion of the polyesteramide and thereafter curing the polyesteramide emulsion. When halogen-containing polyesteramides are used, a synergistic fire-retardancy effect is achieved. Substantially water-insoluble metal |
