| Patents for C07C 4 - Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms (5,080) |
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| 04/21/1999 | CN1043051C Process for producing hydrowax |
| 04/21/1999 | CN1043037C Hydrodealkylation process |
| 04/14/1999 | EP0908505A1 Anti-aging additive composition for a quench oil circuit in an ethylene production plant and method for operating the circuit |
| 04/07/1999 | EP0906152A1 Hydrocarbon conversion catalyst and its use |
| 03/31/1999 | EP0905110A2 Hydrocarbon cracking process |
| 03/31/1999 | EP0767768B1 Haloalkylation process |
| 03/31/1999 | CN1212677A Processf or preparing parasylene |
| 03/31/1999 | CN1212676A Process for conversion of ethylbenzene |
| 03/24/1999 | EP0785178B1 Process for producing aromatic hydrocarbon |
| 03/18/1999 | WO1999012874A1 Improvements in a method of reclaiming styrene and other products from polystyrene based materials |
| 03/09/1999 | US5879535 Two-stage process for obtaining significant olefin yields from residua feedstocks |
| 03/02/1999 | US5877380 Quench oil viscosity control in pyrolysis fractionator |
| 03/02/1999 | US5877374 Zsm-5, a group viii metal, and a further element selected from magnesium, sodium, barium, potassium, calcium, zinc or phosphorus |
| 03/02/1999 | US5877368 Method for producing aromatic hydrocarbons |
| 03/02/1999 | US5877366 Preheated dicyclopentadiene is introduced into a heated transfer fluid sufficiently below the transfer fluid surface to accomplish substantially complete conversion of said dicyclopentadiene to monomeric cyclopentadiene vapor. |
| 03/02/1999 | US5877362 1,1-diphenylethane is reacted with hydrogen and/or water. |
| 02/24/1999 | EP0897379A1 Process for converting a geminally substituted cyclopentadiene |
| 02/23/1999 | US5874661 Hydrocarbon treatment |
| 02/23/1999 | US5873950 Nickel-based alloy having strengthening carbide phase formed in-situ during pyrolysis to form ethylene; heat, stress and creep resistance |
| 02/03/1999 | EP0894768A1 Process for producing a ferrierite-type zeolite and its use as catalyst for isomerizing a linear olefin to an isoolefin or as catalyst for hydrocracking and hydroisomerizing paraffins |
| 02/02/1999 | US5866745 Catalysts are characterized by low surface area, by non-alumina supports and by the catalytic oxides of the group ivb, vb and vib transition metals. |
| 02/02/1999 | US5866743 Hydrodealkylation processes |
| 01/20/1999 | EP0579776B1 Olefin oligomerization process |
| 01/20/1999 | CN1205249A Modifying method of beta zeolite |
| 01/20/1999 | CN1041714C Process for dehydrogenating light paraffins in a fluidized bed reactor |
| 01/13/1999 | EP0746596B1 Process for producing thermally cracked products from hydrocarbons |
| 01/07/1999 | EP0888187A1 Crystalline metallophosphates |
| 01/05/1999 | US5856613 Catalytic hydrodealkylation |
| 01/05/1999 | US5856609 Aromatic hydrodealkylation process with sulfur oxide containing catalyst |
| 01/05/1999 | US5856608 Hydrotreating catalyst composition and processes therefor and therewith |
| 12/17/1998 | WO1998056877A1 Sequential catalytic and thermal cracking for enhanced ethylene yield |
| 12/17/1998 | WO1998056874A1 Enhanced olefin yield and catalytic process with diolefins |
| 12/17/1998 | WO1998056873A1 Hydrocarbon cracking with positive reactor temperature gradient |
| 12/17/1998 | WO1998056741A1 Heavy aromatics processing |
| 12/17/1998 | WO1998056740A1 Multi-reactor system for enhanced light olefin make |
| 12/17/1998 | WO1998056738A1 Olefin skeletal isomerization process |
| 12/17/1998 | CA2290606A1 Olefin skeletal isomerization process |
| 12/17/1998 | CA2290460A1 Hydrocarbon cracking with positive reactor temperature gradient |
| 12/16/1998 | EP0884103A1 Catalyst based on high-silica zeolite and bismuth and its use for the conversion of aromatic hydrocarbons |
| 12/16/1998 | EP0884101A2 Catalyst comprising at least a hydrogenation metal component and a synthetic clay |
| 12/15/1998 | US5849969 Hydrodealkylation processes |
| 12/15/1998 | US5849176 Process for producing thermally cracked products from hydrocarbons |
| 12/08/1998 | US5846496 Apparatus for manufacturing chemical products |
| 12/03/1998 | WO1998054091A1 Zeolite itq-3 |
| 12/02/1998 | EP0880489A1 Process for production of paraxylene |
| 12/02/1998 | EP0880488A1 Process for conversion of ethylbenzene |
| 11/19/1998 | WO1998051409A1 Improved catalyst composition useful for conversion of non-aromatic hydrocarbons to aromatics and light olefins |
| 11/19/1998 | CA2285209A1 Improved catalyst composition useful for conversion of non-aromatic hydrocarbons to aromatics and light olefins |
| 11/18/1998 | EP0877781A1 Shape selective zeolite catalyst and its use in aromatic compound conversion |
| 11/10/1998 | US5833838 Prevention of coking and carburization during hydrocarbon catalytic cracking by coating steel reactor tube with nonpeeling coating of nonoxidized chromium bonded to surface with carbide intermediate layer |
| 10/08/1998 | WO1998043932A1 Low pressure hydrodealkylation of ethylbenzene and xylene isomerization |
| 10/08/1998 | CA2283724A1 Low pressure hydrodealkylation of ethylbenzene and xylene isomerization |
| 09/22/1998 | US5811623 Converting linear olefins to branched olefins and separating olefins from paraffins |
| 09/16/1998 | CN1039807C Process for reducing the degree of branching of branched olefins |
| 09/15/1998 | US5807799 Catalyst composition and process therewith |
| 09/09/1998 | CN1192770A Shape selective zeolite catalyst and its use in aromatic compound conversion |
| 09/09/1998 | CN1039698C Process for catalytic partial oxidation of hydrocarbons |
| 09/08/1998 | US5804689 Process for recovering acetylene from hydrocarbons by thermal cracking |
| 09/01/1998 | US5800696 Adding organosilicon silylating agent to feedstock |
| 09/01/1998 | US5799626 Methods for using styrene oil (as heat transfer fluid, hydraulic fluid, lubricant) |
| 08/06/1998 | WO1998033587A1 A method of providing heat |
| 08/04/1998 | US5789642 Hydrocarbon conversion catalyst composition and processes therefor and therewith |
| 07/29/1998 | EP0855218A1 Dealuminated IM-5 type zeolit |
| 07/22/1998 | EP0804287B1 Catalyst for oxidative dehydrogenation of paraffinic hydrocarbons and use of this catalyst |
| 07/15/1998 | EP0519050B1 Method and device for manufacturing chemicals |
| 07/14/1998 | US5779881 Phosphonate/thiophosphonate coking inhibitors |
| 07/08/1998 | EP0852256A1 Phosphonate/thiophosphonate coking inhibitors |
| 07/08/1998 | CN1186839A Improved zeolite material and use thereof in conversion of non-aromatic hydrocarbons to aromatics and light olefins |
| 06/25/1998 | WO1998027031A1 Two-stage process for obtaining significant olefin yields from residua feedstocks |
| 06/25/1998 | CA2274454A1 Two-stage process for obtaining significant olefin yields from residua feedstocks |
| 06/09/1998 | US5763725 Process for the production of ethylene by non-catalytic oxidative cracking of ethane or ethane rich C2 -C4 paraffins |
| 06/09/1998 | US5763724 Method of manufacturing chemical products |
| 06/09/1998 | US5763721 Hydrodealkylation of C9+ aromatic compounds |
| 05/28/1998 | WO1998022213A1 Dealuminised nu-86 zeolite and its use in the conversion of hydrocarbons |
| 05/28/1998 | CA2271091A1 Dealuminised nu-86 zeolite and its use in the conversion of hydrocarbons |
| 05/27/1998 | EP0844224A1 Process for the preparation of C3 and C4 olefins from a feedstock comprising C4 to C7 olefins |
| 05/20/1998 | EP0842239A1 Method for monomer recovery |
| 05/20/1998 | CN1182117A Method for inhiting rate of coke formation during zeolite catalyzed aromatization of hydrocarbons |
| 05/13/1998 | EP0841387A2 Method for inhibiting the rate of coke formation during the zeolite catalyzed aromatization of hydrocarbons |
| 05/13/1998 | EP0841092A2 Zeolite material and the use thereof in the conversion of non-aromatic hydrocarbons to aromatics and light olefins |
| 05/13/1998 | EP0840771A1 Method for controllably decomposing hydrocarbon polymers |
| 05/12/1998 | CA2217145A1 An improved zeolite material and the use thereof in the conversion of non-aromatic hydrocarbons to aromatics and light olefins |
| 05/06/1998 | EP0839782A1 Process for the inhibition of coke formation in pyrolysis furnaces |
| 04/29/1998 | EP0623101B1 Hydrocarbon conversion |
| 04/28/1998 | US5744674 Catalyst and process for the conversion of heavy aromatics to light aromatics |
| 04/23/1998 | WO1998016468A1 Hydrocarbon conversion using large crystal zeolite catalyst |
| 03/31/1998 | CA2066103C Process for the vapor-phase thermal cracking of dicyclopentadiene and a process for the manufacture of high purity dicyclopentadiene |
| 03/25/1998 | EP0737178B1 Recovery of reactants and products in production of alkenyl bridged ring compounds |
| 03/18/1998 | CN1037780C Process for the preparation of lower olefins |
| 03/17/1998 | US5728909 Depolymerization with basic material and source of copper |
| 03/11/1998 | CN1037667C Catalyst for preparing lower alkene by catalytic conversion of light hydrocarbon, its preparing process and use thereof |
| 02/24/1998 | CA2015209C Production of olefins |
| 02/03/1998 | US5714660 Catalyst composition and processes therefor and therewith |
| 02/03/1998 | US5714659 Catalyst composition and processes therefor and therewith |
| 01/29/1998 | DE19630138A1 Recovery of olefin(s) from poly:olefin(s) |
| 01/28/1998 | EP0820496A2 Methods for using styrene oil (as heat transfer fluid, hydraulic fluid, lubricant) |
| 01/28/1998 | CN1171454A Strengthenable ethylene pyrolysis alloy |
| 01/21/1998 | CN1037094C Method and equipment for producing styrene using waste polystyrene |
| 01/21/1998 | CN1037093C Mdethod and equipment for producing styrene using waste polystyrene |
| 01/14/1998 | EP0818417A1 Zeolite itq-1 |