Patents for C10G 73 - Recovery or refining of mineral waxes, e.g. montan wax (1,976)
07/1984
07/17/1984US4460453 Solvent dewaxing waxy bright stock using a combination polydialkyl fumarate-vinyl acetate copolymer and polyalkyl (meth-) acrylate polymer dewaxing aid
07/03/1984US4458024 Group 8 and group 6 oxides on zeolite and alumina
06/1984
06/13/1984EP0110651A1 Process for separating wax from mixture of wax and oil or wax, oil and solvent
05/1984
05/29/1984US4451572 Production of surface modified zeolites for shape selective catalysis
05/29/1984US4451353 Solvent dewaxing waxy hydrocarbon distillates using a combination poly acrylate polymer and polymethacrylate polymer dewaxing aid
05/09/1984EP0107917A1 Solvent dewaxing waxy hydrocarbon oil distillates using a combination poly di-alkyl fumarate-vinyl acetate copolymer having pendent carbon side chain length of predominantly C 22 and polyalkyl (meth-)acrylate polymer dewaxing aid
05/08/1984US4447311 Vaporization of autorefrigerant in flotation column, separation of wax from oil, and removal
04/1984
04/24/1984US4444648 Solvent dewaxing with methyl tertiary butyl ether
04/18/1984EP0105631A1 Very low crystallinity catalyst made from crystalline zeolite and process for catalytic dewaxing/pour point reduction of waxy hydrocarbon oils using said catalyst
04/18/1984EP0105529A1 Copolymers, process for their preparation and their use
04/10/1984US4441987 Dewaxing process using agitated heat exchanger to chill solvent-oil and wax slurry to wax filtration temperature
04/04/1984EP0104890A1 Separation of a crystallized component from a slurry
04/04/1984EP0104855A2 Improved hydrodewaxing catalyst and process
03/1984
03/27/1984US4439308 Solvent dewaxing waxy bright stock using a combination polydialkylfumarate-vinyl acetate copolymer and wax-naphthalene condensate dewaxing aid
02/1984
02/14/1984US4431527 Denitrogenation and catalytic cracking using a hydrorefining catalyst of refractory, zeolite, phosporus pentoxide and metal oxide
02/08/1984EP0100115A2 Composite crystalline alumium silicates and their use in a process for dewaxing hydrocarbon oils
02/07/1984CA1161828A1 Mixed alkyl esters of interpolymers for use in crude oils
12/1983
12/27/1983US4422924 Solvent dewaxing waxy hydrocarbons using an alpha olefin polymer-olefin vinyl acetate copolymer composite dewaxing aid
12/06/1983US4419220 Zeolite beta catalyst
11/1983
11/30/1983EP0095303A1 Catalytic dewaxing process
11/08/1983CA1156588A1 Catalytic dewaxing of hydrocarbon oils
11/01/1983CA1156265A1 Process for carrying out catalytic conversions
10/1983
10/04/1983CA1154668A1 Mechanically agitated liquid-vapor contacting apparatus
09/1983
09/27/1983US4406771 Solvent dewaxing waxy hydrocarbon oil distillates using a combination poly di-alkyl fumarate-vinyl acetate copolymer having pendent carbon side chain length of predominantly C22 and polyalkyl(meth-)acrylate polymer dewaxing aid
09/14/1983EP0088603A1 Process for solvent dewaxing hydrocarbon oil using methyl tertiary butyl ether
09/14/1983EP0088458A2 Process for the separation of a liquid mixture
09/14/1983EP0088405A2 Process for the extraction of high quality natural waxes
09/06/1983US4403044 Process for carrying out catalytic conversions
07/1983
07/19/1983US4394251 Hydrocarbon conversion with crystalline silicate particle having an aluminum-containing outer shell
06/1983
06/28/1983US4390414 Selective dewaxing of hydrocarbon oil using surface-modified zeolites
06/22/1983EP0082019A2 Selective dewaxing of hydrocarbon oil using surface modified zeolites
06/14/1983US4388244 Reaction product with polyamine; corrosion inhibitor
06/07/1983CA1147689A1 Solvent dewaxing waxy hydrocarbon oils using a lithium isostearate-acrylic ester polymer dewaxing aid
05/1983
05/31/1983CA1147108A1 Modification of regenerated cellulose membranes for organic liquid permeation and the use of said membranes to recover selected organic liquids
05/24/1983US4384835 Apparatus for the production of beads from molten materials
04/1983
04/12/1983CA1144503A2 Continuous autorefrigerative dewaxing process and apparatus
03/1983
03/22/1983US4377469 Maintaining catalytic activity of sodium aluminosilicates
03/22/1983US4377467 Solvent dewaxing waxy hydrocarbon oils using dewaxing aid
03/22/1983CA1143317A1 Polyvinylpyrrolidone dewaxing aid for bright stocks
03/08/1983US4376035 Process for the separation of saturated hydrocarbons from a hydrocarbon charge containing them
03/01/1983US4375403 Solvent dewaxing process
03/01/1983CA1142112A1 Process for manufacturing lube base stocks
02/1983
02/23/1983EP0072379A1 Mechanically agitated liquid-vapor contacting apparatus
01/1983
01/25/1983CA1140067A1 Continuous autorefrigerative dewaxing process and apparatus
01/11/1983US4368112 Conditioned by series of solvents of decreasing polarity
01/05/1983EP0068199A1 Petroleum or hydrocarbon wax oxidate composition
12/1982
12/21/1982CA1137911A1 Process for the separation of saturated hydrocarbons from a hydrocarbon charge containing them
12/01/1982EP0065704A1 Redox catalyst plus promoter for oxidation of hydrocarbons
11/1982
11/09/1982US4358363 Method for enhancing catalytic activity
11/09/1982US4358362 Method for enhancing catalytic activity
11/08/1982EP0054031A4 Solvent dewaxing process.
11/02/1982US4357232 Method for enhancing catalytic activity
10/1982
10/26/1982US4356080 Solvent deoiling apparatus and process
10/19/1982US4354921 Solvent dewaxing process
10/12/1982US4354003 Synergistic mixture having improved efficiency
10/12/1982CA1133412A1 Production of high v.i. lubricating oil stock
10/05/1982CA1132935A1 Filtration of wax in a solvent dewaxing process
09/1982
09/21/1982CA1132073A1 Solvent dehydration system
09/07/1982CA1131155A1 Dewaxing process
08/1982
08/24/1982CA1130232A1 Solvent dewaxing wax-containing hydrocarbon oils using dewaxing aid
08/18/1982EP0057980A1 Pretreatment of catalytic dewaxing feedstocks
08/04/1982EP0057071A1 Pretreatment of catalytic dewaxing feedstocks
07/1982
07/28/1982EP0056718A2 Pretreatment of catalytic conversion feedstocks
07/13/1982US4339619 Solvent dewaxing waxy hydrocarbon oils using dewaxing aid
06/1982
06/23/1982EP0054031A1 Solvent dewaxing process
06/15/1982US4334978 Precipitating from a hydrocarbon oil-solvent mixture
04/1982
04/06/1982CA1121291A1 Control system and method for a plurality of solvent dewaxing filters
03/1982
03/16/1982US4319962 Continuous autorefrigerative dewaxing apparatus
02/1982
02/16/1982US4315813 Solvent dewaxing waxy hydrocarbon oils using dewaxing aid
02/09/1982US4314886 For dewaxing hydrocarbons
02/09/1982CA1117888A1 Solvent dewaxing waxy hydrocarbon oils using dewaxing aid
02/02/1982CA1117457A1 Catalytic dewaxing with a hydrogen form zeolite l catalyst
01/1982
01/26/1982CA1117064A1 Recovery and recycle of dewaxing aid
01/26/1982CA1117063A1 Dilution chilling dewaxing by modification of tower temperature profile
01/07/1982WO1982000029A1 Solvent dewaxing process
11/1981
11/17/1981CA1112594A1 Methods and rotary continuous vacuum filter, particularly for dewaxing oil
11/10/1981CA1112201A1 Recovering useful oil from wax filter hot washings and dumped slurry
11/10/1981CA1112196A1 Sweating
11/03/1981CA1111797A1 Dilution chilling dewaxing solvent
11/03/1981CA1111781A1 Wax separation process
09/1981
09/30/1981EP0036460A1 A continuous process for dewaxing waxy oil using dewaxing solvent and auto-refrigerant, and apparatus therefor
09/16/1981EP0035807A1 Process for carrying out catalytic conversions
09/01/1981CA1108084A1 Gas oil processing
08/1981
08/18/1981US4284414 Mixed alkyl esters of interpolymers for use in crude oils
08/18/1981CA1107217A1 Process for alkylating waxy hydrocarbons
08/11/1981CA1106859A1 Process for the production of low pour point synthetic oils
06/1981
06/30/1981CA1104082A1 Process for manufacturing refrigeration oils
06/16/1981CA1103187A1 Dewaxing waxy oil by dilution chilling employing static mixing means
06/09/1981CA1102730A1 Processing of crude oils
06/03/1981EP0029778A1 Process for the separation of saturated hydrocarbons from a hydrocarbon feed
05/1981
05/26/1981US4269695 Reclaiming wax contaminated lubricating oils
05/06/1981EP0027841A1 Dewaxing plant
04/1981
04/29/1981EP0027722A2 Process for dewaxing hydrocarbons employing low-speed scraped-surface chillers
04/21/1981US4262790 Controllable flow through heat exchanger
04/21/1981CA1099655A1 Incremental dilution dewaxing process
03/1981
03/31/1981US4259174 Catalytic dewaxing of hydrocarbon oils
03/31/1981US4259169 Process for the separation of n-paraffins from hydrocarbon oils
12/1980
12/10/1980EP0020094A1 An improved solvent extraction process for providing lubricating oil fractions
12/09/1980US4238321 Selective adsorption on a molecular sieve; desorption by hydrogen gas
11/1980
11/12/1980EP0018778A1 Catalytic dewaxing of hydrocarbon oils
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