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| Number | Title | Issue Date |
| 7199201 | Synthetic polyisoprene rubber The neodymium catalyst system prepared by the technique of this invention can be used in the polymerization of isoprene monomer into synthetic polyisoprene rubber having an extremely high cis-microstructure content and high stereo regularity. This polyisoprene rubbe... | 04/03/2007 |
| 7179632 | Process for the production of allicin There is disclosed a method for preparing allicin which comprises the following steps: (a) mechanically treating a natural source of alliinase to release alliinase therefrom; (b) contacting the mechanically treated alliinase source with an aqueous solution of allici... | 02/20/2007 |
| 7157533 | Process of obtaining an isoprene-enriched FCC C5 fraction and selective polymerization of isoprene from said fraction A process is described for obtaining from an “FCC” initial C5 fraction which is enriched with isoprene and purified and usable for the selective polymerization of isoprene. A process is also described for obtaining an isoprene homopolymer from a polymerization m... | 01/02/2007 |
| 7115790 | Method for the production of 1-octene by reductive telomerisation The invention relates to a process for preparing 1-octene by telomerization of 1,3-butadiene using a reducing agent in the presence of a telomerization catalyst and partial hydrogenation of the octadiene obtained in this way. ... | 10/03/2006 |
| 7102046 | Process for the arylation of olefins The present invention relates to a process for the arylation of olefins by reaction of haloaromatics or arylsulfonates with olefins in the presence of a palladium catalyst, a bulky nitrogen base and a salt. ... | 09/05/2006 |
| 7091150 | Synthetic polyisoprene rubber The neodymium catalyst system prepared by the technique of this invention can be used in the polymerization of isoprene monomer into synthetic polyisoprene rubber having an extremely high cis-microstructure content and high stereo regularity. This polyisoprene rubbe... | 08/15/2006 |
| 7029724 | Composition and method for forming doped A-site deficient thin-film manganate layers on a substrate A method of forming an A site deficient thin film manganate material on a substrate from corresponding precursor(s), comprising liquid delivery and flash vaporization thereof to yield a precursor vapor, and transporting the precursor vapor to a chemical vapor deposi... | 04/18/2006 |
| 6841711 | Process for making a lube base stock from a lower molecular weight feedstock in a catalytic distillation unit A process for making a lube base stock wherein an olefinic feedstock is contacted with an oligomerization catalyst in a catalytic distillation unit to produce a product having a higher number average molecular weight than the olefinic feedstock. That product is sepa... | 01/11/2005 |
| 6667423 | Process for the production of a diene in three successive stages from a tertiary alkyl ether For the production of a diene a process in three stages comprises a stage a) for decomposition of at least one tertiary alkyl ether in a mixture that contains at least one tertiary olefin, at least one alcohol and at least one residual ether, in the presence o... | 12/23/2003 |
| 6333443 | Process for the production of methylacetylene and propadiene A process for producing methylacetylene and propadiene in a reaction zone which is elongate in one direction (one axis) comprises a heating zone and a cooling zone following said heating zone, in which a gas mixture comprising at least one hydrocarbon con... | 12/25/2001 |
| 6323383 | Synthesis method of chemical industrial raw material and high-octane fuel, and high-octane fuel composition A process for the synthesis of chemical industrial feedstock and high-octane fuel, wherein calcium phosphate which is controlled in the molar Ca/P ratio and/or one which contains an activating metal (M) at a molar (Ca+M)/P ratio of 1 to 2 is used as the c... | 11/27/2001 |
| 5859277 | Silicon-containing solid support linker A compound of the formula ##STR1## where R is a solid support; R1 and R2 are alkyl, unsubstituted alkyl, or phenyl, and where R1 and R2 can be the same or different, for use in solid-phase synthesis.... | 01/12/1999 |
| 5801293 | Method of isomerizing olefins The invention includes a method for skeletal isomerization of C4-5 olefins. The method includes contacting in a FCC zone, at FCC conditions, an n-C4-5 olefins-containing etherification zone raffinate, with an FCC catalyst, where at l... | 09/01/1998 |
| 5792891 | Integrated process for the production of tame An alkene skeletal isomerization process is employed in an integrated process for the production of tertiary ether, e.g., tertiary amyl methyl ether (TAME) from the reaction of isoamylenes (iC5= 's) with methanol in the presence of a... | 08/11/1998 |
| 5728917 | Polymer depolymerization using ruthenium and osmium carbene complexes Disclosed are ruthenium and osmium carbene compounds which are stable in the presence of a variety of functional groups and which can be used to catalyze olefin metathesis reactions on unstrained cyclic and acyclic olefins. Specifically, the present inven... | 03/17/1998 |
| 5698752 | Selective hydrogenation process A selective hydrogenation of an alkyne in an olefin-containing fluid is provided which comprises contacting the fluid and hydrogen gas with a catalyst in the presence of at least one sulfur compound, under reaction conditions effective to produce at least... | 12/16/1997 |
| 5672803 | Method for making trans non-conjugated diolefins A method is provided for selectively producing a trans-geometrical isomer of non-conjugated diolefins. The method comprises treating a starting non-conjugated diolefin isomer or mixture of isomers, a first mono-olefin and a second mono-olefin with a metat... | 09/30/1997 |
| 5659101 | Catalytic system and process for the production of polydiolefins A catalytic system to polymerize diolefinic monomers consists of a lanthanide salt, an organometallic compound of a metal belonging to groups I, II and III of the periodic table of elements and an organometallic compound of boron. The polymers obtained ar... | 08/19/1997 |
| 5648583 | Process for converting exo-isomers of alkyl substituted cyclopentadienes to endo-isomers Exo-isomers of polyalkylcyclopentadienes are converted to endo-isomers by contacting the exo-isomers with an acid such as aqueous HCl.... | 07/15/1997 |
| 5510550 | Selective acetylene hydrogenation A catalyst composition comprising palladium, silver and a support material (preferably alumina) is contacted at a relatively low temperature (of up to about 60° C.) with a liquid composition comprising an effective reducing agent (preferably an alkali me... | 04/23/1996 |
| 5430213 | Process for producing 1,4-dienes Pure 1,4-dienes are produced at high rates of reaction by reacting a conjugated diene and an alpha monoolefin at a temperature below 70° C. in the presence of a catalyst consisting essentially of a 1,3-bis(diphenylphosphino)propane ligand of Co(II)(acety... | 07/04/1995 |
| 5416258 | Methods for inhibiting ethylenically unsaturated monomers Methods and compositions are provided for inhibiting the polymerization of butadiene-containing streams during elevated temperature processing thereof or during storage or shipment of monomer containing product. The composition comprises a combination of ... | 05/16/1995 |
| 5354937 | 2-tert-amyl compounds Tert-amyl compounds of the general formula I ##STR1## and novel processes for preparing 2-tert-amylbutadiene by dehydrating 3,4,4-trimethylhex-1-en-3-ol at from 100° to 350° C. and from 0.01 to 50 bar on acidic catalysts, its preparation by partial... | 10/11/1994 |
| 5304699 | Process for the removal of green oil from a hydrocarbon stream Disclosed is a process for removing hydrogenation by-products which comprises the use of an extractive distillation tower operated in combination with a solvent stripper, hydrocarbon purge and a water wash column. By the arrangement of the various feeds t... | 04/19/1994 |
| 5245098 | Process for preparation of non-conjugated diolefins The monomer 5-methyl-1,4-hexadiene (5-MHD), uncontaminated with 4-methyl-1,4-hexadiene (4-MHD), or other hydrocarbons, is obtained by reacting 1-chloro-2-methylpropene with allylmagnesium bromide in equimolar amounts under gentle reflux at atmospheric pre... | 09/14/1993 |
| 5238998 | Toner and developer compositions with liquid glass resins A toner composition comprised of multiblock or liquid glass resin particles with a glass transition temperature of between from about 20° C. to about 65° C., and pigment particles.... | 08/24/1993 |
| 5113033 | Ruthenium salt and aluminum halide catalyst system for codimerization of alpha monoolefins and conjugated diolefins A catalyst system for codimerization of alpha-monoolefins and conjugated diolefins to yield 1,4-dienes. The catalyst system includes at least one ruthenium salt and at least one aluminum halide. Suitable aluminum halides include both alkyl aluminum halide... | 05/12/1992 |
| 5113032 | Process for producing olefins from natural gas Process for producing olefins from natural gas, the natural gas (2) is mainly fractionated (1) into methane (3) and higher hydrocarbons (4), the latter being then mainly fractionated (17, 20) into propane (9) and ethane (7). The methane (3), admixed with ... | 05/12/1992 |
| 5025108 | Process for producing olefins from natural gas Process for producing olefins from natural gas. The natural gas is fractionated (1). The methane (3) mixed with oxygen (6) crosses the oxidizing reactor (5), receives the C2 + hydrocarbons (7) and the mixture crosses the pyrolysis reactor (8). ... | 06/18/1991 |
| 5025111 | Production of non-conjugated diolefins Non-conjugated diolefins having the formula: ##STR1## wherein R3 and R4 are either hydrogen, alkyl or substituted alkyl and n is an integer, are produced by the process comprising reacting a diolefin having the formula: ##S... | 06/18/1991 |
| 4996340 | Intramolecular migration reactions A novel migratory insertion reaction is disclosed utilizing organoaluminum compounds. An intramolecular transfer of a carbon group from the aluminum complex E-1-halo-1-alkenyl)trialkylalanate occurs to produce an E-alkenyl(alkoxy)dialkylalanate or an E-di... | 02/26/1991 |
| 4992609 | Phosphonium salts and processes for production of and uses for the same Novel phosphonium salts of the general formula ##STR1## wherein R1 and R2 each is a hydrogen atom or a hydrocarbon group of 1 to 12 carbon atoms which may optionally be substituted; R3 is a hydrogen atom or a hydrocar... | 02/12/1991 |
| 4943670 | Preparation of conjugated dienes A process for the preparation of a compound of general formula ##STR1## in which R1 represents a hydrogen atom or a methyl group, one of R2 and R3 represents a hydrogen atom and the other of R2 and R3 | 07/24/1990 |
| 4843178 | Compositions possessing pheromone-like activity The present invention relates to a process for producing an E,Z-9-alkenyl-1-aldehyde component which comprises: (a) disproportionating cyclooctene and an -olefin in the presence of a suitable disproportionation catalyst under disproportionation conditio... | 06/27/1989 |
| 4762962 | Process for the isomerization of branched dienes This invention relates to a process for the isomerization of branched dienes which comprises contacting at isomerization conditions a branched diene with a boron phosphate catalyst wherein the initial ratio of phosphorus (P) to boron (B) is less than 1.0 ... | 08/09/1988 |
| 4636573 | Hindered silicon ester stabilizers Compounds of the formulae I and II ##STR1## wherein R1, R2, R3, R4 and R5 are independently hydrogen, alkyl of 1 to 18 carbon atoms, cycloalkyl of 5 to 8 carbon atoms, phenyl, phenyl substituted ... | 01/13/1987 |
| 4604480 | Method for the preparation of sulfones and compounds containing carbon chains having conjugated unsaturation and the compounds resulting from such method A method for the preparation of a first sulfone compound of the formula: ##STR1## wherein Ra is ##STR2## where Rb is Br and Rc is H except that Rb and Rc together may be an electron pair whe... | 08/05/1986 |
| 4571443 | Process for effecting oxidative dehydrodimerization Certain benzylic and allylic compounds are catalytically oxidatively dehydrodimerized wherein the molecular oxygen oxidant is separated from the substrate by a gas impervious catalyst membrane that conducts oxide ions from the surface of the catalyst memb... | 02/18/1986 |
| 4554375 | Co-preparartion of 2,7-octadienyl formate, 1,6-octadiene and 4 vinylcyclohexane from butadiene using a platinum catalyst A method for preparing 2,7-octadienyl formate by reacting 1,3-butadiene with formic acid in the presence of a platinum(II) catalyst is described. The platinum(II) catalyst is preferably platinum acetylacetonate. A reaction temperature between 50° and 150... | 11/19/1985 |
| 4536604 | Butadiene reductive dimerization using a platinum catalyst and polymeric amine promoter A method for preparing 1,6-octadiene by reacting 1,3-butadiene with formic acid in the presence of a platinum(II) catalyst and a polymeric tertiary amine catalyst is described. The combination of a platinum(II) catalyst such as platinum acetylacetonate wi... | 08/20/1985 |
