Patents for C10G 73 - Recovery or refining of mineral waxes, e.g. montan wax (1,976)
11/1980
11/11/1980CA1089392A1 Dilchill dewaxing using wash filtrate solvent dilution
10/1980
10/21/1980US4229282 Nickel-tungsten zeolite
10/01/1980EP0016530A1 Catalytic dewaxing of hydrocarbon oils with synthetic offretite
08/1980
08/19/1980US4218263 Process for preparing oxygen-containing waxes
08/12/1980US4217203 Of hydrocarbon oil with solvent, multistage
08/06/1980EP0013834A2 Method of converting a hydrophilic, water-containing regenerated cellulose membrane to a membrane useful for separating organic liquids
08/05/1980US4216075 Continuous, ketone-autorefrigerant solvent for hydrocarbon oils
07/1980
07/09/1980EP0013150A1 Process for dewaxing waxy hydrocarbon oils using ketone dewaxing solvent and a polyvinylpyrrolidone dewaxing aid
06/1980
06/17/1980US4208184 Leather fatting agent
06/11/1980EP0011926A1 Production of high V.I. lubricating oil stock
06/03/1980US4206034 Felted-cloth filter
05/1980
05/20/1980US4203824 Polyvinylpyrrolidone dewaxing aid for bright stocks
05/20/1980CA1077698A1 Dewaxing with a polyol ester aid
04/1980
04/22/1980US4199433 Solvent dewaxing of lubricating oils, stripping solvent from dewaxed oils, deoiled waxes and slack waxes with inert gas in counterflow
04/22/1980US4199431 Oxidation of petrolatums in the presence of halide salts
04/15/1980CA1075629A1 Olefin dicarboxylic copolymers and esters thereof as dewaxing aids
03/1980
03/25/1980CA1074244A1 Hydrodewaxing
03/11/1980US4192733 Solvent dewaxing waxy hydrocarbon oils using dewaxing aid
03/11/1980US4192732 Recovery and recycle of dewaxing aid
03/04/1980US4191631 Ketone solvent, polyalkyl acrylate crystal modifier
02/1980
02/19/1980CA1072036A1 Immiscible coolant in propylene-acetone dewaxing
01/1980
01/29/1980US4186078 Metal oxide hydrogenation catalyst on porous alkali metal aluminum silicate
01/09/1980EP0006665A1 Process for the separation of straight paraffins from a mixture
11/1979
11/27/1979US4176050 Catalytic dewaxing, zeolites
11/20/1979CA1066832A1 Mixed oxidation product on the basis of bark waxes and other waxes
10/1979
10/23/1979CA1064847A1 Mineral oil dewaxing process with dehydration of feed and solvent
09/1979
09/25/1979US4169039 Recovering useful oil from wax filter hot washings and dumped slurry
09/04/1979CA1061732A1 Temporarily immiscible dewaxing
08/1979
08/14/1979CA1060460A1 Hydroxyalkylhydroxy - aromatic condensation products as fuel and lubricant additives
08/07/1979US4163730 Hydroxyalkyl hydroxy-aromatic condensation products as lubricant additives
04/1979
04/24/1979US4151069 Olefin-dicarboxylic anhydride copolymers and esters thereof are dewaxing aids
04/17/1979US4149960 Dewaxing by contacting with an aluminum silicate zeolite catalyst
04/10/1979US4148711 Microcrystalline waxes, colorless
03/1979
03/27/1979US4146461 Dilution chilling dewaxing by modification of tower temperature profile
03/20/1979US4145275 Dilchill dewaxing using wash filtrate solvent dilution
03/20/1979CA1050913A1 Process for the purification of slack waxes
02/1979
02/27/1979CA1049435A1 Method and apparatus for wax deoiling
02/20/1979US4140620 Incremental dilution dewaxing process
02/20/1979US4140619 Wax treating process
02/13/1979US4139494 Catalyst for hydrofining petroleum wax
12/1978
12/05/1978US4128472 Solvent dewaxing process
11/1978
11/07/1978US4124650 Process for the production of low pour point synthetic oils
11/07/1978US4124495 Processing of crude oils
10/1978
10/03/1978CA1039675A1 Urea dewaxing of low n-paraffin content oils
09/1978
09/19/1978US4115245 Solvent dewaxing process
09/19/1978US4115244 Petroleum distillates
09/19/1978US4115243 Solvent dewaxing process
09/19/1978US4115242 Solvent dewaxing process
09/19/1978US4115241 Precipitation, fractionation
09/05/1978US4111790 Dilution chilling dewaxing solvent
08/1978
08/22/1978US4108784 Hydroxyalkyl hydroxy-aromatic condensation products as fuel and lubricant additives
08/15/1978CA1036527A1 Catalytic hydrodewaxing gas oils and other selective hydrocracking
08/08/1978US4105539 Dewaxing with a polymerized polyol ester dewaxing aid
05/1978
05/23/1978US4090950 Without acid treatment and clay contact, catalytic hydrogenation and dewaxing
05/09/1978US4088565 Solvent dewaxing process
05/09/1978US4088564 Dehydrating process for ketone dewaxing solvents
05/02/1978US4087255 Copolymers of ethylene and ethylenically unsaturated monomers, process for their preparation and distillate oil containing said copolymers
04/1978
04/11/1978US4083731 Polishes, chromic and sulfuric acid
03/1978
03/28/1978US4081352 Combination extraction-dewaxing of waxy petroleum oils
01/1978
01/24/1978US4070410 Method of isolating individual normal alkanes from petroleum stock
01/24/1978US4070269 Complexing, slurrying
11/1977
11/29/1977US4060569 Hydrocarbon polymers
10/1977
10/04/1977US4052294 Method of solvent recovery in autorefrigerant/ketone dewaxing processes
09/1977
09/13/1977US4048094 Reactivation of hydrotreating catalyst by operating at a temperature in excess of normal operating temperature
09/13/1977US4048055 Process for regenerating aqueous urea solutions
08/1977
08/16/1977US4042411 Method of processing food paraffins and uses of obtained products
07/1977
07/05/1977US4033855 Mineral oil dewaxing process with dehydration of feed and solvent
03/1977
03/22/1977US4013542 Partial predilution dilution chilling
03/22/1977US4013541 Method and apparatus for wax deoiling
09/1976
09/21/1976US3981850 Process for preparing copolymers of ethylene and vinyl esters or mixtures with other ethylenically unsaturated monomers
09/21/1976US3981789 Apparatus for oil dewaxing
09/07/1976US3979345 Extrusion of a thermoplastic resin mixed with a paraffin wax and calcium fatty acid salt
08/1976
08/03/1976US3972802 Immiscible coolant in propylene-acetone dewaxing
06/1976
06/01/1976US3960703 Process for the purification of slack waxes
05/1976
05/11/1976US3956102 Hydrodewaxing
03/1976
03/23/1976US3945912 Mineral oils, paraffin-urea adducts
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