| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 04/19/1977 | US4018843 Process for the obtaining of isobutylene of high purity |
| 04/19/1977 | US4018657 Separation of hydrocarbon mixtures by alkyl displacement |
| 04/05/1977 | US4015955 Fluid separation process and membrane |
| 03/29/1977 | US4014950 Process for the purification of liquid sorbents comprising bimetallic salt complexes |
| 03/29/1977 | US4014949 Separation of cyclic compounds with molecular sieve adsorbent |
| 03/29/1977 | US4014665 Membrane process and product |
| 03/15/1977 | US4012456 Method for separation of isobutylene from C4 hydrocarbon fractions |
| 03/15/1977 | US4012289 Acetone separation using sulfolaneas extractive solvent |
| 03/01/1977 | US4010009 Stripping water |
| 02/22/1977 | US4009126 Zinc ferrite, nickel carbonate, sodium hydroxide |
| 02/22/1977 | US4009097 Multistage, hydrocarbons |
| 02/22/1977 | US4009084 Multistage extractive distillation |
| 02/15/1977 | US4008289 Adsorbent treating method |
| 02/01/1977 | US4006197 Process for separating normal paraffins |
| 01/25/1977 | US4004430 Demethanization |
| 01/18/1977 | US4003800 Styrene purification process |
| 01/11/1977 | US4002721 Process improvement in the absorption of acid gas from a feed gas |
| 01/11/1977 | US4002554 Purging, nitric oxide, distillation unit |
| 01/11/1977 | US4002042 Recovery of C2 + hydrocarbons by plural stage rectification and first stage dephlegmation |
| 01/04/1977 | US4001111 Dual temperature gradient elution liquid chromatography |
| 12/28/1976 | US4000248 Synthesis of zeolites |
| 12/28/1976 | US4000059 Hydrocarbon separation process |
| 12/28/1976 | US4000044 Fractionation of immiscible liquids of equal density |
| 12/21/1976 | US3998902 Purification of unsaturated compounds |
| 12/21/1976 | US3998901 Separation of ethylbenzene with an adsorbent comprising sr and k exchanged x or y zeolite |
| 12/14/1976 | US3997620 Process for separating para-xylene |
| 12/14/1976 | US3997619 Process for the separation of ethylbenzene |
| 12/07/1976 | US3996306 Adsorption of para-isomer with a zeolite; potassium, rubidium, and cesium, cations |
| 12/07/1976 | US3996113 Extractive distillation with furfural and alicyclic ketone solvent |
| 12/07/1976 | US3996111 Recovering ethylphenol from decomposition products of diethylbenzene monohydroperoxide |
| 12/07/1976 | US3996030 Fractionation of gases at low pressure |
| 11/30/1976 | US3994986 Method of producing cyclopentene |
| 11/23/1976 | US3993547 Alpha, gamma-bis-diphenylene-beta-phenyl allyl as a polymerization inhibitor for vinyl aromatic compounds |
| 11/16/1976 | US3992471 Process for the separation of 1,3-butadiene by selective adsorption on a zeolite adsorbent |
| 11/16/1976 | US3992469 Effluent fractionation in simulated moving-bed adsorption processes |
| 11/16/1976 | US3992465 Process for manufacturing and separating from petroleum cuts aromatic hydrocarbons of high purity |
| 11/02/1976 | US3989478 Upgrading a methane gas stream |
| 10/26/1976 | US3988385 Hydrogen fluoride; extraction, distillation |
| 10/26/1976 | US3988383 Absorption oils |
| 10/26/1976 | US3988212 Polymerization inhibitor for vinyl aromatic compounds |
| 10/19/1976 | US3987121 Process for separating alpha-pinene from beta-pinene |
| 10/19/1976 | US3987120 Sulfonation with sulfuric acid, hydrolysis |
| 10/19/1976 | US3987119 Production of vinyl chloride from ethane |
| 10/19/1976 | US3986937 Polymerization inhibitor for vinyl aromatic compounds |
| 10/12/1976 | US3985644 Methanol mixtures as solvents for aromatics extraction |
| 10/05/1976 | US3983711 Plural stage distillation of a natural gas stream |
| 09/28/1976 | US3982912 Method for preparation of an improved K-A type zeolite and for separation by adsorption polar and non-polar molecules |
| 09/14/1976 | US3980528 Solvent separation of diolefins from mixtures containing the same |
| 09/07/1976 | US3979475 Hydrofluoric acid |
| 09/07/1976 | US3979474 Sulfuric acid, temperature |
| 09/07/1976 | US3979473 Process for the color stabilization of indene |
| 09/07/1976 | US3979280 Separation of unsaturated compounds from liquid hydrocarbon mixtures containing same |
| 08/31/1976 | US3977203 Liquid extraction with a polar solvent |
| 08/17/1976 | US3975172 Recovery of gaseous components from scrubbing liquid |
| 08/10/1976 | US3974085 Cupric and mercuric chloride, hydrochloric acid |
| 08/03/1976 | US3972692 Process for removing acid from hydrocarbons |
| 07/13/1976 | US3969223 Olefin separation process |
| 07/13/1976 | US3969196 Process for the separation of mixtures of substances |
| 07/06/1976 | US3967937 Absorption process method and apparatus |
| 06/29/1976 | US3966984 Method of reducing air pollution by recovering d-limonene from citrus pulp processing operation |
| 06/29/1976 | US3966834 Membrane of vinyl halide, vinyl acetate, ethylene, tetrafluoroethylene homo or copolymers |
| 06/29/1976 | US3966589 Process for the separation of aromatic hydrocarbons from a mixed hydrocarbon feedstock |
| 06/29/1976 | US3966445 Freeze refining method |
| 06/29/1976 | US3966417 Apparatus for contacting alkylate containing alkyl fluoride with hydrogen fluoride |
| 06/22/1976 | US3965206 Production of stilbene and styrene |
| 06/22/1976 | US3964979 Nitric oxide |
| 06/22/1976 | US3964978 Nitrogen dioxide |
| 06/15/1976 | US3963795 Xylene |
| 06/08/1976 | US3962366 Isomerization and separation of cymenes from mixtures containing same |
| 06/01/1976 | US3960976 Method for the separation of hydrocarbons |
| 06/01/1976 | US3960910 Removal of h2o and ammonia using a copper-aluminum-aromatic hydrocarbon complex |
| 06/01/1976 | US3960520 Adsorption, ortho- and meta-xylene |
| 06/01/1976 | US3959978 Separation process by fractional crystallization |
| 05/25/1976 | US3959395 Dinitrophenol from styrene tar, alkali metal or ammonium hydroxide |
| 05/18/1976 | US3957896 Process for preparing 2,6-dimethylnaphthalenes |
| 05/11/1976 | US3956415 Plural stage distillation with intermediate indirect heat exchange, of feed streams comprising ethylene and methane |
| 05/04/1976 | US3954895 Method of separating and recovering alkenylbenzenes and unreacted alkylbenzenes from the alkenylation reaction product |
| 05/04/1976 | US3954665 Catalyst for the dimerization of diolefins using the reductive properties of metal carbonyls |
| 04/27/1976 | US3953324 Removal of solvent |
| 04/27/1976 | US3953301 Continuous, distillation |
| 04/27/1976 | US3953300 Process for separating a high purity vinyl aromatic hydrocarbon from hydrocarbon mixtures containing the same |
| 04/20/1976 | US3951621 Process for separating one or more components of a gaseous mixture |
| 04/13/1976 | US3950448 Detergent-grade alkylate production |
| 04/06/1976 | US3949012 Hydrocarbon upgrading process |
| 04/06/1976 | US3948758 Production of alkyl aromatic hydrocarbons |
| 03/30/1976 | US3947506 Recovery of isoprene |
| 03/30/1976 | US3947504 Separation and recovery of 3-methyl-3-butene-1-ol |
| 03/23/1976 | US3945912 Mineral oils, paraffin-urea adducts |
| 03/16/1976 | US3944628 Methylnaphthalenes by complexing with silver trifluoromethane sulfonate |
| 03/16/1976 | US3944483 Distillative recovery of aromatics with water addition in azeotropic proportions |
| 03/09/1976 | US3943185 Diolefin production and purification |
| 03/09/1976 | US3943184 Aromatic hydrocarbon isomer separation process |
| 03/09/1976 | US3943183 Aromatic hydrocarbon isomer separation process by adsorption |
| 03/09/1976 | US3943182 Process for the separation of ethylbenzene by selective adsorption on a zeolitic adsorbent |
| 03/09/1976 | US3942957 Production of combustible gases |
| 03/02/1976 | US3941871 Crystalline silicates and method of preparing the same |
| 02/17/1976 | US3939221 Fractional distillation, aluminosilicate adsorbent |
| 02/03/1976 | US3936509 Process for separating dimethyl naphthalenes comprising 2,6-dimethyl naphthalenes as main component |
| 01/20/1976 | US3933599 Distillation |
| 01/13/1976 | US3932533 Process for the recovery of pure alpha-bisabolol |