| Patent Number |
Title Of Patent |
Date Issued |
| 4990656 |
Polyamine substituted dithiocarbamate and process for producing the same |
February 5, 1991 |
| A polyamine substituted dithiocarbamate compound is provided. Also provided are minerals depressant compounds for recovering mineral values from an ore or concentrate wherein the values are recovered in a froth from an aqueous slurry. A process of forming the minerals depressant compound |
| 4895993 |
Promoters for haloalkene isomerization |
January 23, 1990 |
| An isomerization of a haloalkene is conducted in the presence of a mixture of a copper compound and a trithiocarbonic acid derivative or dithiocarbonic acid derivative. |
| 4883585 |
Ore flotation and sulfenyl dithiocarbamates as agents for use therein |
November 28, 1989 |
| A process for the recovery of minerals from an ore or concentrate containing the same wherein the minerals are recovered in a froth from an aqueous pulp containing the ore or concentrate and wherein one or more mineral flotation agents are employed in the aqueous pulp to control the |
| 4877518 |
Ore flotation employing dimercaptothiadiazoles |
October 31, 1989 |
| A process for separating and recovering minerals, such as molybdenum or coal, from ores with which they occur by addition of a dimercaptothiadiazole to an ore flotation process. |
| 4806234 |
Ore flotation |
February 21, 1989 |
| A polyamine substituted dithiocarbamate composition is provided. Also provided are minerals depressant compositions for recovering mineral values from an ore or concentrate wherein the values are recovered in a froth from an aqueous slurry. A process of forming the minerals depressant |
| 4747940 |
Ore flotation and tri-alkali metal-di(carboxyalkyl) dithiocarbamate and triammonium-di(carboxyal |
May 31, 1988 |
| Tri-alkali metal di(carboxyalkyl) dithiocarbamates and triammonium-di(carboxyalkyl) dithiocarbamates which can be characterized by the formula ##STR1## wherein R and R' can be the same or different and are selected from the group consisting of alkylene radicals, preferably alkyle |
| 4702821 |
Ore flotation and di-alkali metal-di(carboxyalkyl)dithiocarbamate and diammonium-di(carboxyalkyl |
October 27, 1987 |
| Carboxyalkyl dithiocarbamates which can be characterized by the formula ##STR1## wherein R is selected from the group consisting of alkylene radicals, wherein R' is selected from the group consisting of hydrogen and methyl and ethyl radicals, R.sup.2 is selected from the group consis |
| 4686033 |
Trithiocarbonates as flotation reagents |
August 11, 1987 |
| The efficiency of metals separation using ore flotation is improved by the use of certain substituted hydrocarbylene trithiocarbonates as suppressants for undesired metals. |
| 4681675 |
Ore flotation |
July 21, 1987 |
| 3-Hydroxytrimethylene sulfides are useful in ore flotation processes as depressants for iron, nickel, lead and/or zinc. |
| 4663082 |
Water-based industrial cleaners |
May 5, 1987 |
| A stable water-based industrial cleaning composition comprising water, an additive comprising a mixture of an alkyl polyoxyalkylene sulfide and an alkyl polyoxyalkylene sulfoxide and at least one builder selected from the group consisting of alkali metal and ammonium salts of ethylenedia |
| 4650568 |
Trithiocarbonates as depressants in ore flotation |
March 17, 1987 |
| Polyhydroxytrithiocarbonates can be used as depressants in ore flotation. |
| 4640789 |
Ore flotation and flotation agents for use therein |
February 3, 1987 |
| Ammonium dialkylaminoalkyl (thiocarbonyldithio) alkanoates, alkali metal dialkylaminoalkyl (thiocarbonyldithio) alkanoates, their use as flotation agents, and a process for the production of these novel compositions are disclosed. N,N-dialkylaminoalkyl mercaptoalkanoate, its use as an |
| 4622131 |
Ore flotation |
November 11, 1986 |
| In an ore flotation process for recovering copper values from an aqueous slurry the improvement comprises a depressant composition of an amino-substituted carboxylic acid derivative or a mercapto-substituted carboxylic acid derivative in combination with a thiocarbonate derivative. |
| 4619760 |
Ore flotation agent from 2-mercaptobenzimidazole and flotation processes therewith |
October 28, 1986 |
| Process for the preparation of ore flotation collectors is disclosed comprising reacting an alkali metal salt of a 2-mercaptobenzimidazole with carbon disulfide. Also disclosed is process for recovery of minerals by flotation employing the novel ore flotation collectors prepared as d |
| 4601818 |
Ore flotation |
July 22, 1986 |
| Mercaptobenzothiazoles are usually employed together with hydrocarbyl trithiocarbonate in flotation processes for the recovery of copper values from an ore containing same. |
| 4595538 |
Tri-alkali metal-di(carboxyalkyl)dithiocarbamate and triammonium-di(carboxyalkyl)dithiocarbamate |
June 17, 1986 |
| Tri-alkali metal di(carboxyalkyl) dithiocarbamates and triammonium-di(carboxyalkyl) dithiocarbamates which can be characterized by the formula ##STR1## wherein R and R' can be the same or different and are selected from the group consisting of alkylene radicals, preferably alkyle |
| 4584118 |
Metal trithiocarbonates as depressants |
April 22, 1986 |
| Metal trithiocarbonates such as Na.sub.2 CS.sub.3 are useful depressant for such sulfided minerals as copper and iron sulfides in molybdenum recovery. |
| 4579651 |
Flotation reagents |
April 1, 1986 |
| A composition and process are provided for the recovery of the values of zinc, molybdenum, copper, lead, iron (pyrite), and iron-containing small amounts of gold or uranium, or both, from ores comprising these mineral sulfides. The aqueous composition is the impure form of an alkali meta |
| 4561984 |
Trithiocarbonate flotation reagents |
December 31, 1985 |
| The efficiency of metals separation using ore flotation is improved by the use of certain substituted hydrocarbylene trithiocarbonates as suppressants for undesired metals. |
| 4561971 |
Ore flotation and flotation agents for use therein |
December 31, 1985 |
| S-Carboalkoxy-S'-alkyl trithiocarbonate, S-carboalkenoxy-S'-alkyl trithiocarbonate, S-carboalkenoxy-S'-alkenyl trithiocarbonate and S-carboalkoxy-S'-alkenyl trithiocarbonate, their use as flotation agents, and a process to make these novel compositions are disclosed. |
| 4556500 |
Flotation reagents |
December 3, 1985 |
| A composition and process are provided for the recovery of the values of zinc, molybdenum, copper, lead, iron (pyrite), and iron-containing small amounts of gold or uranium, or both, from ores comprising these mineral sulfides. The aqueous composition is the impure form of an alkali meta |
| 4554108 |
Alkali carboxyalkyl dithiocarbamates and use as ore flotation reagents |
November 19, 1985 |
| Carboxyalkyl dithiocarbamates which can be characterized by the formula ##STR1## wherein R is selected from the group consisting of alkylene radicals, preferably alkylene radicals each having from 1 to 4 carbon atoms, wherein R' is selected from the group consisting of hydrogen and m |
| 4554068 |
Ore flotation and flotation agents for use therein |
November 19, 1985 |
| Carboxyalkyl dithiocarbamates which can be characterized by the formula ##STR1## wherein R is selected from the group consisting of alkylene radicals, wherein R' is selected from the group consisting of hydrogen and methyl and ethyl radicals, and wherein X is selected from the group |
| 4534857 |
Ore flotation with combined collectors |
August 13, 1985 |
| Sodium diethyl dithiophosphate and sodium ethyl trithiocarbonate are used for the flotation of molybdenum and/or copper containing ores.S-allyl-S'-n-butyl trithiocarbonate and N,N-dimethyl-S-benzyl dithiocarbamate are used for the flotation of molybdenum and/or copper containing ores.Sod |
| 4533467 |
Ore flotation and flotation agents for use therein |
August 6, 1985 |
| Diammonium bis(carboxyalkyl)-trithiocarbonate salts, dialkali metal bis(carboxyalkyl)-trithiocarbonate salts, their use as flotation agents, and a process for the production of these novel compositions are disclosed. |
| 4533466 |
Polycarboxylic acid derivatives and uses |
August 6, 1985 |
| Mercapto polycarboxylic acids, especially the trithiocarbonate derivatives thereof and alkali metal salts, are employed as treating agents in mineral recovery operations. |
| 4528141 |
Process for producing trithiocarbonic acid esters |
July 9, 1985 |
| S-Carboalkoxy-S'-alkyl trithiocarbonate, S-carboalkenoxy-S'-alkyl trithiocarbonate, S-carboalkenoxy-S'-alkenyl trithiocarbonate and S-carboalkoxy-S'-alkenyl trithiocarbonate, their use as flotation agents, and a process to make these novel compositions are disclosed. |
| 4521300 |
Ore flotation with combined collectors |
June 4, 1985 |
| S-allyl-S'-n-butyl trithiocarbonate and N,N-dimethyl-S-benzyl dithiocarbamate are used for the flotation of molybdenum and/or copper containing ores.Sodium isopropyl xanthate and sodium n-butyl trithiocarbonate are used for the flotation of lead. |
| 4518492 |
Ore flotation with combined collectors |
May 21, 1985 |
| S-carbalkoxy-S'-alkyl trithiocarbonate and n-dodecyl mercaptan are used for flotation of copper, nickel and iron-containing ores. S-carbalkoxy-S'-alkyl trithiocarbonate, n-dodecyl mercaptan and poly(propylene glycol) are used for the flotation of copper, nickel and iron-containing or |
| 4515687 |
Ore flotation and flotation agents for use therein |
May 7, 1985 |
| Ammonium dialkylaminoalkyl (thiocarbonyldithio) alkanoates, alkali metal dialkylaminoalkyl (thiocarbonyldithio) alkanoates, their use as flotation agents, and a process for the production of these novel compositions are disclosed. N,N-dialkylaminoalkyl mercaptoalkanoate, its use as an |
| 4514293 |
Ore flotation and flotation agents for use therein |
April 30, 1985 |
| Ammonium N-carboxyalkyl-S-carboalkoxy dithiocarbamates, alkali metal N-carboxyalkyl-S-carboalkoxy dithiocarbamates, their use as flotation agents, and a process for the production of these novel compositions are disclosed. |
| 4511465 |
Ore flotation with combined collectors |
April 16, 1985 |
| A composition comprising a mixture containing both the following compounds in substantial quantities(a) S-allyl-S'-n-butyl trithiocarbonate; and(b) a compound selected from the group consisting of N,N,S-triethyl dithiocarbamate, N,N-diethyl-S-n-butyl dithiocarbamate, and mixtures thereof |
| 4510050 |
Metal trithiocarbonates as depressants |
April 9, 1985 |
| Metal trithiocarbonates such as Na.sub.2 CS.sub.3 are useful depressant for such sulfided minerals as copper and iron sulfides in molybdenum recovery. |
| 4482480 |
Polycarboxylic acid derivatives and uses |
November 13, 1984 |
| Mercapto polycarboxylic acids, especially the trithiocarbonate derivatives thereof and alkali metal salts, are employed as treating agents in mineral recovery operations. |
| 4462898 |
Ore flotation with combined collectors |
July 31, 1984 |
| Sodium diethyl dithiophosphate and sodium ethyl trithiocarbonate are used for the flotation of molybdenum and/or copper containing ores.S-allyl-S'-n-butyl trithiocarbonate and N,N-dimethyl-S-benzyl dithiocarbamate are used for the flotation of molybdenum and/or copper containing ores.Sod |
| 4459237 |
Trithiocarbonates |
July 10, 1984 |
| The efficiency of metals separation using ore flotation is improved by the use of certain substituted hydrocarbylene trithiocarbonates as suppressants for undesired metals. |
| 4439314 |
Flotation reagents |
March 27, 1984 |
| A blend of certain xanthates with mercaptan/glycol combinations produce collector compositions which yield improved results in ore flotation. |
| 4424123 |
Ore flotation using fulvenes |
January 3, 1984 |
| Fulvene and hydrocarbyl substituted fulvenes are disclosed as mineral collectors for ore flotation processes, particularly for molybdenum sulfide recovery. |
| 4424122 |
Gold flotation with mercaptan and imidazoline |
January 3, 1984 |
| A composition comprising a mercaptan, an imidazoline and a frother has been found to synergistically increase gold recovery over the recovery achievable with mercaptan and imidazoline alone. |
| 4416770 |
Selective mineral recovery |
November 22, 1983 |
| Recovery of copper and iron from ores is enhanced by adding beta-mercaptoethanol as a depressant to a froth flotation process. Flotation of sulfides of zinc and lead is reduced. |
| 4372844 |
Aromatic and benzothiophene extender oil composition for ore floatation |
February 8, 1983 |
| An extender oil characterized as having a viscosity at 100.degree. F. in a range of about 40 to about 250 SUS and an aromatic content in the range of about 60 to about 85 wt % of the total collector composition of which about 10 to about 20 wt % of the total collector composition is chos |
| 4250067 |
Copolymer-oil blends stabilized with asphalt |
February 10, 1981 |
| A method for hot melt blending a stablized composition of rubbery polymer and extender oil by dissolving asphalt in the extender oil prior to dissolving rubbery copolymer in the mixture. Preferably up to about 10 weight percent asphalt is dissolved in the extender oil prior to addition |
| 4217259 |
Asphaltic concrete compositions comprising diene/vinyl aromatic copolymers |
August 12, 1980 |
| Improved asphalt-containing compositions having excellent flexural fatigue test characteristics are prepared by incorporating into the mix during its preparation at least one diene/vinyl aromatic copolymer, said copolymer being a radial teleblock copolymer wherein the teleblock copolymer |
| 4211013 |
Gauge |
July 8, 1980 |
| A gauge suitable for use with specimens of various lengths provides very accurate measurement of small changes in the length of a given specimen. |
| 4196115 |
Blends of different conjugated diene/monovinyl aromatic copolymers in bituminous based roofing a |
April 1, 1980 |
| A radial conjugated diene/monovinyl aromatic copolymer having a weight average molecular weight (M.sub.w) above 200,000 and a conjugated diene/monovinyl aromatic ratio of 50/50 to 85/15 is used together with a conjugated diene/monovinyl aromatic copolymer having an M.sub.w below 200, |
| 4172061 |
Asphaltic concrete compositions comprising hydrogenated diene/vinyl aromatic copolymers |
October 23, 1979 |
| Improved asphalt-containing compositions having excellent flexural fatigue test characteristics are prepared by incorporating into the mix during its preparation at least one hydrogenated diene/vinyl aromatic copolymer. |
| 3993496 |
Emulsified asphalt emulsion fortified with asbestos fibers |
November 23, 1976 |
| A method for coating a fabric with an asphalt emulsion containing asbestos fibers, the fibers having been pretreated with a non-ionic surface active agent to yield a stable emulsion containing asphalt and fortifying asbestos fibers, useful as a sealant composition which will not extrude |
| 3960719 |
Coalescence filter for oil-water dispersions |
June 1, 1976 |
| A filtering medium composed of a fabric made from an oleophilic fiber-forming polymer and having a high ratio of surface area to unit weight is used in coalescing oil dispersed in water thereby facilitating separation of oil droplets dispersed in water. In one embodiment a capcoated, |
| 3953974 |
Impervious barrier comprising polyolefin fabric, asphalt and asbestos |
May 4, 1976 |
| An impervious cover structure is produced by laying a polyolefin fabric fused on one side only, fused side against the surface to be covered, and the unfused side is coated with a mixture containing asphalt and asbestos fibers. |
| 3931439 |
Modified asphalt hydraulic sealer |
January 6, 1976 |
| Cut-back asphalt, when modified by the addition of a small amount of a butadiene-styrene block copolymer, a hydrogenated butadiene-styrene copolymer, or mixtures thereof, or an ethylene-vinyl acetate copolymer, provides an effective hydraulic sealant when applied to a nonwoven fabric. |
