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| Number | Title | Issue Date |
| 7423183 | Oxidation of mercaptoethanol A process for preparing dihydroxyethylene disulfide by reacting mercaptoethanol with oxygen, in which mercaptoethanol is reacted with oxygen or an oxygenous gas in the presence of ammonia and/or amines using copper salts or manganese salts. ... | 09/09/2008 |
| 7351327 | Process for the selective desulfurization of a mid range gasoline cut A process for concurrently fractionating and treating a full range naphtha stream. The full boiling range naphtha stream is first subjected to simultaneous thioetherification and splitting into a light boiling range naphtha, an intermediate boiling range naphtha and... | 04/01/2008 |
| 7304184 | Process for producing allyl-containing compounds An allyl-containing compound represented by following Formula (3): wherein R2, R3, R4, R5 and R6 may be the same as or different from one another and each re... | 12/04/2007 |
| 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 |
| 7192565 | Method of collecting mercaptans contained in a gaseous feed The gaseous feed flowing in through line 1 is contacted in contacting zone ZA with a liquid solvent flowing in through line 2. The solvent comprises between 0.001% and 100% by weight of a liquid olefin. Contacting in zone ZA is carried out in the prese... | 03/20/2007 |
| 7026372 | Enic compounds, sulfur-containing polyenic compound, sulfur-containing polythiol compound, high refractive index photocurable composition and cured product thereof A composition containing 3,3′-thiobis(propane-1,2-dithiol) and one or more enic compounds which composition is photocurable and can give a cured product having a high refractive index and adequate hardness. ... | 04/11/2006 |
| 6930206 | Process and apparatus for catalytic distillations A process for reacting a first component with itself or a second component to produce a third component in which a first material comprising a first component or said first component and a second component is fed to divided wall column having a catalytic distillatio... | 08/16/2005 |
| 6849384 | Photoacid generators, photoresist compositions containing the same and pattering method with the use of the compositions Photoacid generators comprising sulfonium salt compounds represented by the following general formula (2) wherein R1 and R2 represent each an alkyl group optionally having oxo, or R1 and R2 may be cyclized together to form... | 02/01/2005 |
| 6620957 | Process for producing onium salt derivative and novel onium salt derivative The invention provides a high-yield method for producing onium salt derivatives useful as agents, such as acid-generators, employed in chemically amplified resists; and to provide novel onium salt derivatives. Reaction of an onium salt derivative containi... | 09/16/2003 |
| 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 |
| 6451904 | Preparing sterile articles from polymers containing a stabilizer based on a poly (oxyalkylene) Novel polymer stabilizers are disclosed. The novel stabilizers have the general formula (R)q Sn-(MR"-OCH2 -R'CH]m -OT)4-q, P-[(OCH2 -R'CH)m OT]3' ##STR1## wherein M is O or S and... | 09/17/2002 |
| 6051740 | Oxidation of mercaptans to disulfides A process which can be used to produce an organic disulfide is provided. The process comprises contacting a mercaptan in the presence of an oxygen-containing fluid, a catalyst, optionally a cocatalyst, and further optionally a solvent or a surfactant or c... | 04/18/2000 |
| 5919985 | Method for production of sulfide group-containing thiol compound An object is to provide a method for the production of a sulfide group-containing thiol compound which comprises using a solvent capable of effecting the ring-opening addition reaction of an alkylene sulfide to a thiol compound without inducing the alkyle... | 07/06/1999 |
| 5659106 | Catalytic distillation process for mercaptan and olefin removal Mercaptans and olefins are removed from paraffin-rich feed streams through the use of dual zone catalytic distillation in the substantial absence of hydrogen. The mercaptans are reacted with the olefins using a first catalyst such as a sulphonated resin t... | 08/19/1997 |
| 5534634 | Process for preparing trifluoroethyl sulfur compounds from thiolates and 1-chloro-2,2,2-trifluoroethane Process for preparing trifluoroethyl sulfur compounds from thiolates and 1-chloro-2,2,2-trifluoroethane. The invention relates to the preparation of trifluoroethyl sulfur compounds of the formula RSCH2 CF3 by reacting 1-chloro-2,2,2-... | 07/09/1996 |
| 5463134 | Paraffin treating process for mercaptan and olefin removal Contaminants such as mercaptans, oxygenates and olefins are removed from paraffin-rich feed streams through the use of catalytic distillation performed using an acid catalyst such as a sulphonated resin in the substantial absence of hydrogen. The mercapta... | 10/31/1995 |
| 5338468 | Sulfurized olefins A procedure for the incorporation of sulfur into olefins which produces a non-staining, low odor, EP-active gear oil additive by reacting an olefin such as isobutylene with elemental sulfur in the presence of an aqueous solution of a strong base such as a... | 08/16/1994 |
| 5324858 | New sulfured compounds New sulfurized compounds, their preparation and their use are described. They correspond to the general formula: {[R--SX --(CH2)n --]z CH3-z --(CH2)P --}2 Sy, in... | 06/28/1994 |
| 5321163 | Multi-purpose catalytic distillation column and eterification process using same A multi-purpose distillation column reactor is disclosed which may be used for the production of tertiary amyl methyl ether from the reaction of the isoamylenes contained in a light naphtha with methanol. Two reaction distillation zones are disposed above... | 06/14/1994 |
| 5304683 | Conversion of alkyl mercaptan to dialkyl sulfide and catalyst therefor A process for converting at least one alkyl mercaptan to a dialkyl sulfide can be carried out by contacting the alkyl mercaptan, and optionally an alkene, with an alumina catalyst under conditions sufficient to substantially covert the alkyl mercaptan to ... | 04/19/1994 |
| 5266727 | Purification of alkyl sulfides A process for purifying alkyl sulfides by absorption of the organosulfur impurities on an absorbent. The absorber is a copper salt deposited on a high surface area support. The purified alkyl sulfide is useful as an extractant for palladium.... | 11/30/1993 |
| 5208357 | Chiral metallocene compounds and preparation thereof by attachment of chiral center There are provided enantiomerically enhanced chiral substituted cyclopentadienyl ligands and compounds thereof, and a process for their making comprising contacting a substituted fulvene or derivative thereof with an enantiomerically enhanced or pure nucl... | 05/04/1993 |
| 5099054 | Organoclay triphase catalysts In a method of carrying out organic conversions via heterogeneous phase transfer catalysis by contacting immiscible liquid phases containing respective substances capable of interacting, with a solid catalyst to promote the transfer of reactive species fr... | 03/24/1992 |
| 5091419 | Diurea derivatives useful as medicaments and processes for the preparation thereof Diurea derivatives are provided which are represented by the following general formula and salts thereof: ##STR1## The above compounds inhibit acyl-coenzyme A cholesterol acyl-transferase (ACAT enzyme), and thereby control the accumulation of cholest... | 02/25/1992 |
| 5082945 | Process for the preparation of perhaloalkylthioethers The present invention relates to a process for the preparation of perhaloalkylthioethers by bringing a perhaloalkyl halide, preferably a bromide or an iodide, into contact with a disulphide in the presence of zinc and of sulphur dioxide or of a dithionite... | 01/21/1992 |
| 5043268 | Substrates and inhibitors for prenyl cysteine methyltransferase enzymes Compounds of the formula: ##STR1## in which: R1 is alkyl of 1 to 3 carbon atoms; R2 is --COX; wherein X is hydroxy, methyl, amino, thio, H--N--(alkyl of 1 to 3 carbon atoms), N--(alkyl of 1 to 3 carbon atoms)2, or hal... | 08/27/1991 |
| 5024847 | Sulfur containing acyclic terpenes This invention provides oxygen or sulfur containing compounds possessing fruity, floral, or woody odors. These compounds may be used to fragrance or flavor a variety of consumer products such as tobacco products, foodstuffs, beverages, gums, mouthwashes, ... | 06/18/1991 |
| 4964957 | Purification of high boiling alkyl sulfides A process for preventing the substantial decomposition of an alkyl sulfide compound at high temperatures comprising combining a non-reactive basic compound with the alkyl sulfide compound prior to subjecting the resultant mixture to the high temperatures.... | 10/23/1990 |
| 4963535 | Nonirritant cosmetic compositions containing a foaming surfactant and a nonionic surfactant containing two fatty chains Cosmetic compositions for cleaning hair, the skin or for removing make-up from the face or from the eyes, containing (a) a foaming surface-active agent, (b) an aqueous, hydroalcoholic or oily carrier and (c) a nonfoaming, nonionic product, poorly soluble ... | 10/16/1990 |
| 4927972 | Catalytic process for the production of mercaptans from thioethers A catalytic process for the production of mercaptans from thioethers, which comprises reacting a thioether, in which the sulfur atom of the thioether function is bonded, on the one hand to a tertiary carbon atom and, on the other hand, to a primary or sec... | 05/22/1990 |
| 4722803 | Self-compatibilizing polyester polyol blends based on dimethyl terephthalate residues Fluorocarbon blowing agent compatible polyol blends are provided comprising reaction products of a combination of (a) a residue from the manufacture of dimethyl terephthalate, (b) a low molecular weight diol compound, (c) a nonionic surfactant compound, (... | 02/02/1988 |
| 4666711 | Non-ionic surface-active agents and compositions in which they are present The invention relates to non-ionic surface-active agents which correspond to the formula ##STR1## in which R denotes a linear or branched, saturated or unsaturated aliphatic radical containing 4 to 20 carbon atoms, R1 denotes (1) a, p... | 05/19/1987 |
| 4618722 | Preparation of organic sulfides A process for preparing dihydrocarbyl sulfides comprises the step of simultaneously contacting (a) a dialkyl sulfoxide, preferably dimethyl sulfoxide, with (b) a hydrocarbyl halide, particularly an alkyl or alkenyl bromide, and (c) a metal carboxylate, pr... | 10/21/1986 |
| 4568767 | Process for the manufacture of dialkyl sulfides A process is provided for the preparation of dialkyl sulfides by reacting alkenes and hydrogen sulfide at elevated temperature in the presence of a Type X, Y or L zeolite containing from about 5 to 15 percent by weight of alkali metal, expresed as Me... | 02/04/1986 |
| 4565707 | Flavoring with dialkylthioalkenes, dialkylthioalkylcycloalkenes and monoalkylthioalkenylcycloalkenes Described are dialkylthioalkenes, dialkylthioalkylcycloalkenes and monoalkylthioalkenylcycloalkenes defined according to the generic structure: ##STR1## as well as the genus defined according to the structure: ##STR2## wherein R represents ... | 01/21/1986 |
| 4564476 | Aryl fatty acid leukotriene synthesis inhibitors Aryl fatty acid compounds of the formula (I) ##STR1## wherein R1, R2, R3, X, and Y are as defined herein are novel and useful in the treatment of allergic and inflammatory disorders.... | 01/14/1986 |
| 4563302 | Sulfurized olefin process A sulfurized olefin of improved solubility in lubricating oil is made by reacting sulfur monochloride with a monoolefin (e.g. isobutylene) to form an adduct which is reacted with sodium sulfide, sodium hydrosulfide, sulfur and alkyl mercaptan (e.g. tert-b... | 01/07/1986 |
| 4537994 | Sulfide metathesis Interchange reactions between organosulfides and mercaptans are promoted by the use of catalysts containing tungsten and molybdenum oxide.... | 08/27/1985 |
| 4490558 | Preparation of thioethers Thioethers are prepared by a process wherein an alkali metal mercaptide is reacted with an alcohol and carbon monoxide or with a formate, and are useful starting materials for the preparation of dyes, crop protection agents, drugs and rubber auxiliaries.... | 12/25/1984 |
