Class 568/72 - And a reactant having carbon to carbon unsaturation

Subclass of Class 568 - Organic compounds -- part of the class 532-570 series
Definition: Processes wherein the compound is prepared by reacting hydrogen
No. of patents: 24
Last issue date: 01/19/2010

Number	Title	Issue Date
7649116	Formation of olefins from methyl mercaptan A process is disclosed for the production of olefins including ethylene, propylene and butenes from methyl mercaptan. The process comprises a reaction whereby methyl mercaptan produces the olefin and hydrogen sulfide by pyrolysis. The reaction is carried out at an e...	01/19/2010
7381847	Methyl mercaptan to olefins A process is disclosed for the production of olefins including ethylene, propylene and butenes from methyl mercaptan. The process comprises a reaction whereby methyl mercaptan decomposes to produce the olefin and hydrogen sulfide. The reaction is carried out at an e...	06/03/2008
7339083	Catalytic method of producing alkyl mercaptans by adding hydrogen sulphide to an olefin The process for preparing a mercaptan from an olefin and hydrogen sulphide is carried out in the presence of hydrogen and a catalyst composition comprising a strong acid, such as a heteropolyacid, and at least one metal belonging to group VIII of the Periodic Table....	03/04/2008
7235697	Use of H2S-containing offgas streams for preparing sulfur-containing products The present invention relates to a process for preparing sulfur-containing compounds of the general formula I in which Q, R1 and R2 are each independently defined as follows: Q:...	06/26/2007
7217843	Method of making 2-thiols A process for selectively making 2-thiols from alpha olefins is described. The process includes contacting a linear or branched alpha olefin having with H2S in the presence of a catalyst and recovering the 2-thiol from a product mixture. The catalyst incl...	05/15/2007
6544936	Process for manufacturing sulphurized olefins To manufacture sulphurated products deriving from olefin(s) by sulphurization using sulphur and hydrogen sulphide, the reaction is carried out in the presence of a zeolite....	04/08/2003
6472354	Process for manufacturing sulphurized olefins To manufacture sulphurated products derived from olefin(s) by sulphurization using sulphur and hydrogen sulphide, the reaction is carried out in the presence of a solid acid catalyst and of a solid basic catalyst....	10/29/2002
6365676	Poly-perfluoroalkyl substituted polyamines as grease proofing agents for paper and foam stabilizers in aqueous fire-fighting foams The invention concerns a process for the reaction of a perfluoroalkyl iodide of the formula CF3 (CF2)h --I, where h is an integer from 4 to 18, with a compound having a terminal olefinic group, which comprises conducting s...	04/02/2002
6162952	Production of mercaptans using heterogeneous acidic catalysts Disclosed is a method of making a mercaptan by reacting hydrogen sulfide with an olefin in the presence of a heterogeneous acidic catalyst. The catalyst can be made by calcining a mixture of a hydroxide, such as Zr(OH)4 or Ti(OH)4, w...	12/19/2000
6054418	Process for sulfurizing unsaturated fatty substances by elementary sulfur in the presence of amino compounds A process for sulfurizing a composition of unsaturated fatty ester is described in which said composition is reacted with elemental sulfur in the presence of a promoter that consists of at least one compound with an amine group and in the presence of wate...	04/25/2000
5453544	Process for making tertiary-thiols A process for making t-butylthiol by reacting hydrogen sulfide and an olefin having a carbon number of 3 to 15 in the presence of a HZSM-5, HZSM-12, or MCM-22 zeolite catalyst. The reaction takes place under autogenous pressure conditions and a temperatur...	09/26/1995
5352838	Selective production of ethyl mercaptan A process for selectively producing ethyl mercaptan from a reactant mixture such as, for example, refinery fuel gas mixture is provided which comprises contacting, in the presence of a catalyst such as, for example, oxides of cobalt and molybdenum support...	10/04/1994
4937385	Process for the manufacture of dialkyl disulfides and polysulfides A process is disclosed for continuously preparing dialkyl disulfides and dialkyl polysulfides by reacting at elevated temperature and in the presence of a solid, particulate catalyst an alkene and hydrogen sulfide in a first reaction zone, and then passin...	06/26/1990
4891445	Synthesis of tertiary mercaptans from isobutylene homopolymers The invention relates to the synthesis of tertiary mercaptans from isobutylene homopolymers and from hydrogen sulphide by means of heterogeneous catalysis. In the processs according to the invention, the reaction is carried out at a temperature below 45°...	01/02/1990
4612398	Alkyl mercaptan process A process for making alkyl mercaptans in high yield while minimizing the formation of dialkyl sulfides is conducted by reacting an olefin with hydrogen sulfide in an inert solvent (e.g. CH2 Cl2) containing a Lewis Acid catalyst (e.g....	09/16/1986
4582939	Mercaptan production Catalytic process for the production of mercaptans by contacting unsaturated hydrocarbons with hydrogen sulfide in the presence of a sulfonic acid cation exchange resin catalyst....	04/15/1986
4565893	Process of synthesis of mercaptans from olefins and hydrogen sulphide by heterogeneous catalysis Process for the synthesis of a mercaptan from an olefin, by the action of hydrogen sulphide thereon, in the presence of a catalyst comprising a cation exchange resin, characterized in that this resin is dry and that the reaction is effected at a temperatu...	01/21/1986
4511753	Selective removal of vinylidene olefin from olefin mixtures Vinylidene olefins are selectively removed from a mixture of olefins containing vinylidene olefins by reacting the mixture with either hydrogen sulfide or a hydrocarbyl mercaptan and then distilling the resultant mixture to obtain a substantially vinylide...	04/16/1985
4347385	Process for the separation of sulfur compounds from water Sulfur compounds are separated from aqueous mixtures containing same by employing a stripper having at least two stripping sections with at least a portion of the stripper kettle product being recycled to the lower stripping section. The process is partic...	08/31/1982
4347384	Production of mercaptans Trifluoromethylsulfonic acid has been found to be an extremely useful catalyst for the manufacture of mercaptans from olefins or viscous polyolefins and hydrogen sulfide. Also a novel process for the preparation of mercaptans is disclosed which proven com...	08/31/1982
4119550	Sulfurized compositions Sulfurized compositions are prepared by the reaction of unsaturated compounds and a mixture of sulfur and hydrogen sulfide under superatmospheric pressure, followed by removal of low boiling materials. They are useful as lubricant additives....	10/10/1978
4119549	Sulfurized compositions Sulfurized compositions are prepared by the reaction of unsaturated compounds and a mixture of sulfur and hydrogen sulfide under superatmospheric pressure and in the presence of a catalyst, followed by removal of low boiling materials. They are useful as ...	10/10/1978
4000078	Reaction product of 1,5,9-decatriene and hydrogen sulfide as lubricant anti-wear additives Improved anti-wear additives for lubricants are provided which additives comprise the reaction product obtained by the reaction of 1,5,9-decatriene and hydrogen sulfide. Lubricating oil compositions containing said additives are also provided....	12/28/1976
3963785	Mercaptans by addition of hydrogen sulfide to olefins in presence of carbon disulfide In a method for preparing mercaptans by the addition of hydrogen sulfide to olefins in the presence of sulfactive catalysts a method is provided for increasing the total conversion of reactants to mercaptans by including carbon disulfide in the reaction m...	06/15/1976

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Class 568/72 - And a reactant having carbon to carbon unsaturation