By Condensation Of Entire Cyclic Molecules Or Entire Hydrocarbyl Moieties Thereof, E.g., Polymerization, Etc. Patents (Class 585/422)
-
Publication number: 20030149273Abstract: The present invention relates to a process for preparing polyaryl compounds by coupling aryl halides or aryl sulphonates and reactive aryl compounds in the presence of novel transition metal complexes of N-heterocyclic carbenes which, just like the N-heterocyclic carbenes themselves and the salts from which they are derived, form part of the invention.Type: ApplicationFiled: October 24, 2002Publication date: August 7, 2003Inventors: Hans-Christian Militzer, Ulrich Scholz, Wolfgang A. Herrmann, Christian Gstottmayr
-
Publication number: 20030144565Abstract: he present invention provides a process for natural gas in the form, e.g., of stranded gas or associated gas to transportable liquids. More particularly, the present invention provides a process in which the gas is non-oxidatively converted to aromatic liquid, preferably in proximity to the wellhead, which may be onshore or offshore. In one aspect, the present invention provides integration of separation of wellhead fluids into associated gas and crude with blending of the aromatic liquid derived from the gas with the crude. Alternatively, or in combination, in another aspect, the present invention provides integration of conversion of byproduct hydrogen to power with non-oxidative conversion of gas to aromatic liquid.Type: ApplicationFiled: May 6, 2002Publication date: July 31, 2003Applicant: Conoco Inc.Inventors: Joe D. Allison, Neil Meldrum, Doug S. Jack, Marc J. Ledoux
-
Patent number: 6583260Abstract: Functionalized monomers and polymerized functionalized monomers selected from the group consisting of 2-(N,N-dimethylaminomethyl)-1,3-butadiene, 2-(N,N-diethylaminomethyl)-1,3-butadiene, 2-(N,N-di-n-propylaminomethyl)-1,3-butadiene, 2-(cyanomethyl)-1,3-butadiene, 2-(aminomethyl)-1,3-butadiene, 2-(hydroxymethyl)-1,3-butadiene, 2-(carboxymethy)-1,3-butadiene, 2-(acetoxymethyl)-1,3-butadiene, 2-(2-alkoxy-2-oxoethyl)-1,3-butadiene, 2,3-bis(cyanomethyl)-1,3-butadiene, 2,3-bis(dialkylaminomethyl)-1,3-butadiene, 2,3-bis(4-ethoxy-4-4-oxobutyl)-1,3-butadiene and 2,3-bis(3-cyanopropyl)-1,3-butadiene, and methods for preparing such functionalized diene monomers and polymers.Type: GrantFiled: December 7, 2001Date of Patent: June 24, 2003Assignee: Iowa State University Research Foundation, Inc.Inventor: Valerie V. Sheares
-
Publication number: 20030097030Abstract: A process for producing branched olefins from a mixed linear olefin/paraffin isomerisation feed comprising linear olefins having at least 7 carbon atoms in 5-50% w comprising in a first stage skeletally isomerising linear olefins in the isomerisation feed and in a second stage separating branched and linear molecules wherein branched molecules are substantially olefinic and linear molecules are olefinic and/or paraffinic; novel stages and combinations thereof; apparatus therefor; use of catalysts and the like therein; and use of branched olefins obtained thereby.Type: ApplicationFiled: August 14, 2002Publication date: May 22, 2003Inventor: Peter Arnoldy
-
Publication number: 20030092947Abstract: The present invention relates to a process for the preparation of a biphenyl compound comprising combining a phenyl boronic acid derivative with an halobenzene derivative in the presence of a suitable additive in a suitable organic solvent with a suitable catalyst and a suitable base.Type: ApplicationFiled: October 18, 2002Publication date: May 15, 2003Inventors: John Paul Gardner, William David Miller
-
Publication number: 20030088120Abstract: A method for producing biphenyl and its derivative comprising oxidatively coupling a benzene aromatic compound in the presence of a catalyst comprising a palladium salt, a copper salt, and a bidentate ligand compound capable of forming a complex with the palladium salt via the nitrogen atom and the oxygen atom in the molecule thereof in an atmosphere containing molecular oxygen. In particular, an improved method for selectively producing an asymmetrically substituted biphenyl derivative, such as a 2,3,3′,4′-biphenyltetracarboxylic acid tetraester, which comprises oxidatively coupling a substituted aromatic compound, such as a phthalic diester, in the presence of the catalyst in an atmosphere containing molecular oxygen without replenishing with a ligand.Type: ApplicationFiled: October 2, 2002Publication date: May 8, 2003Inventors: Yasushi Yamamoto, Tetsuro Tsuji, Jun Haruta
-
Patent number: 6545156Abstract: Oligomeric compounds and methods of making the compounds having the formula: T&Parenopenst;M—F&Parenclosest;i&Parenopenst;M—F′&Parenclosest;jM (III) wherein i and j are integers from about 0 to 300 and the sum of i and j is greater than 2, wherein the units F, F′ and T are derived from one or more multi-functional carbonyl compounds of general structure DO—CO—CRaRb—(—CRcRd—)n—NH—(Y)m—CO—OD (IV) wherein n is an integer from 1 to 15, m is either 0 or 1; Ra, Rb, Rc, and Rd, are each a hydrogen or a hydrocarbyl group; Y is CO—(CReRf)p, wherein Re and Rf are each a hydrogen or hydrocarbyl group and p is zero or an integer from 1 to 20 or CO—C6H4—, D is a hydrocarbyl group, and M is a moiety derived from one or more diamino or dihydroxy compounds that contain a 4-aminopiperidine radical.Type: GrantFiled: November 3, 2000Date of Patent: April 8, 2003Assignee: Cytec Technology Corp.Inventors: Thomas Patrick Sassi, Ram Baboo Gupta
-
Patent number: 6534690Abstract: A process for the preparation of at least one spherically shaped porous microcomposite is provided which microcomposite comprises a perfluorinated ion-exchange polymer containing pendant sulfonic and/or carboxylic acid groups entrapped within and highly dispersed throughout a network of inorganic oxide, wherein the weight percentage of the perfluorinated ion-exchange polymer in the microcomposite is from about 0.1 to about 90 percent, and wherein the size of the pores in the microcomposite is about 0.Type: GrantFiled: April 26, 2001Date of Patent: March 18, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Mark Andrew Harmer, Qun Sun
-
Publication number: 20030050500Abstract: The present invention encompasses a process for preparing arylolefins by reacting one or more arylamines with one or more organic nitrites, in the presence of one or more olefins which bear at least one hydrogen atom on the double bond and in the presence of acid and in the presence of palladium or one or more palladium compounds.Type: ApplicationFiled: August 12, 2002Publication date: March 13, 2003Inventors: Markus Eckert, Albert Schnatterer, Walter Lange
-
Publication number: 20020137974Abstract: Phosphine oxide and sulfoxide compounds were used with transition metals, preferably palladium and nickel, to produce biaryls, arylthiols, arylphosphine oxides and arylamines via cross-coupling reactions with aryl halides and arylboronic acids, aryl Grignard reagents, thiols, phosphine oxides or amines.Type: ApplicationFiled: July 6, 2001Publication date: September 26, 2002Inventor: George Y. Li
-
Patent number: 6455746Abstract: The invention concerns ultrafine polymetallic particles obtained from reducing a mixture of salts dissolved in an organic solvent by an alkali or alkaline earth metal hydride, at a temperature not higher than the solvent reflux temperature, the mixture of dissolved salts comprising at least a salt of a metal having a standard oxidant potential E°Mn+/M at 25° C. higher than −1.18 V. The invention is applicable to the hydrogenation of olefins and the coupling of halogenated aromatic derivatives.Type: GrantFiled: March 21, 2000Date of Patent: September 24, 2002Assignee: Centre National de la Recherche ScientifiqueInventors: Jean-Marie Dubois, Yves Fort, Olivier Tillement
-
Publication number: 20020107425Abstract: A method for treating a terminal dihalo hydrocarbyl compound with an alkali metal indenide to produce a bis(indenyl) hydrocarbyl compound is described.Type: ApplicationFiled: February 27, 2002Publication date: August 8, 2002Inventor: Daniel A. Gately
-
Patent number: 6420305Abstract: A method for producting a solid acid catalyst is provided which produces a shaped material of a solid acid catalyst containing a sulfureous component but have a high activity and having a practically sufficient handleability and mechanical strength involves the steps of (a) fabricating a support containing a portion of zirconia and/or hydrated zirconia and a portion of alumina and/or hydrated alumina and having a peak diameter in the range of 0.05 to 1 &mgr;m in a pore diameter distribution of 0.05 to 10 &mgr;m; and having a sulfuerous component supported on the support or (b) fabricating a support containing a portion of zirconia and/or hydrated zirconia and a portion of alumina and/or hydrated alumina and including pores having a pore diameter of not less than 0.05 &mgr;m and not more than 1 &mgr;m occupying a pore volume of 0.05 to 0.5 ml/g and pores having a pore diameter of about 1 &mgr;m and not more than 10 &mgr;m occupying a pore volume of below 0.Type: GrantFiled: August 11, 2000Date of Patent: July 16, 2002Assignee: Japan Energy CorporationInventors: Kenji Matsuzawa, Kohjiroh Aimoto, Kazuhiro Seki
-
Patent number: 6387837Abstract: This invention relates to a process for the free-radical polymerization of monomers in gas phase or suspension processes using a supported, polymerization-initiating system comprising a) one or more polymerization-initiating components which initiate and start free-radical polymerization, b) a support, onto which said polymerization-initiating component is applied, and c) optionally, one or more modifiers which have an influence upon reaction kinetics and/or product properties.Type: GrantFiled: February 3, 1999Date of Patent: May 14, 2002Assignee: Bayer AktiengesellschaftInventors: Michael Dauben, Martin Hoch, Christiane Oppenheimer-Stix, Peter Schertl
-
Patent number: 6344538Abstract: Functionalized monomers and polymerized functionalized monomers selected from the group consisting of 2-(N,N-dimethylaminomethyl)-1,3-butadiene, 2-(N,N-diethylaminomethyl)-1,3-butadiene, 2-(N,N-di-n-propylaminomethyl)-1,3-butadiene, 2-(cyanomethyl)-1,3-butadiene, 2-(aminomethyl)-1,3-butadiene, 2-(hydroxymethyl)-1,3-butadiene, 2-(carboxymethy)-1,3-butadiene, 2-(acetoxymethyl)-1,3-butadiene, 2-(2-alkoxy-2-oxoethyl)-1,3-butadiene, 2,3-bis(cyanomethyl)-1,3-butadiene, 2,3-bis(dialkylaminomethyl)-1,3-butadiene, 2,3-bis(4-ethoxy-4-4-oxobutyl)-1,3-butadiene and 2,3-bis(3-cyanopropyl)-1,3-butadiene, and methods for preparing such functionalized diene monomers and polymers.Type: GrantFiled: May 2, 2000Date of Patent: February 5, 2002Assignee: Iowa State University Research Foundation, Inc.Inventor: Valerie V. Sheares
-
Publication number: 20010039349Abstract: A process for the catalytic coupling of cyclic hydrocarbons with a functionalizing reagent under thermal conditions to functionalize the cyclic hydrocarbon at its secondary or aromatic C—H site.Type: ApplicationFiled: March 1, 2001Publication date: November 8, 2001Inventors: John Frederick Hartwig, Thomas Carl Semple, Huiyuan Chen
-
Publication number: 20010037043Abstract: The present invention relates to a process for preparing bisindenylalkanes of formula I: 1Type: ApplicationFiled: February 22, 2001Publication date: November 1, 2001Inventors: Richard Herman Woudenberg, Faysal Kalmoua
-
Publication number: 20010020104Abstract: The novel two-stage process described here makes it possible to obtain substituted benzyl compounds and toluene derivatives in a simple manner and in high yields by means of Suzuki-type coupling reactions of an aromatic with an organoboron compound, followed by a reduction. The process is particularly useful for preparing ortho-substituted benzyl compounds and toluene derivatives. The process can be applied to both intermolecular and intramolecular coupling reactions. Catalysts used for the coupling reaction are palladium compounds and/or nickel compounds. An advantageous aspect is that only very small amounts of catalyst are required.Type: ApplicationFiled: February 22, 2001Publication date: September 6, 2001Applicant: Clariant GmbHInventors: Steffen Haber, Stefan Scherer, Heinz Georg Kautz, Andreas Meudt, Frank Vollmuller
-
Patent number: 6255549Abstract: A fraction of low bromine number mainly containing a styrenic compound/aromatic compound adduct can be attained, by feeding reaction materials of a styrenic compound and an aromatic compound to a fixed-bed flow reactor packed with a solid acid catalyst in a liquid phase at a temperature in the range of 40 to 350° C. to form a styrenic compound/aromatic compound adduct, in which (1) the feed of reaction materials is stopped when the bromine number of the above fraction is increased up to a predetermined value, (2) a saturated aromatic hydrocarbon having a mean value of the proportion of aromatic ring carbons in a molecule of 55% or more is fed to the reactor in a liquid phase at a temperature higher by 5 to 150° C. than that of the reaction mixture just before the above stopping, and (3) the feed of reaction materials is then restarted to obtain the fraction.Type: GrantFiled: April 19, 2000Date of Patent: July 3, 2001Assignee: Nippon Petrochemicals Company, LimitedInventors: Hideyuki Dohi, Shozo Hayashi
-
Patent number: 6239324Abstract: The invention provides a chain diene compound with desirable regioselectivity, in the presence of a specific ruthenium compound. This chain diene compound is a promising raw material for terpene. It has a structure represented by the general formula (IX): wherein R1 represents H, a C1-C6 alkyl group which may be substituted or a C2-C6 alkenyl group which may be substituted, R2 represents a phenyl group which may have a C1-C4 alkyl group or a C1-C12 acyloxy group which may have a phenyl group or a naphthyl group, or a benzyl group or R2 is a hydroxy group which reversibly forms an aldehyde group through shifting of the position of the double bond adjacent to said hydroxy group. The chain diene compound is produced by reacting 2-substituted-1,3-butadienes with terminal olefins in the presence of a ruthenium compound in a hydrophilic solvent.Type: GrantFiled: August 26, 1999Date of Patent: May 29, 2001Assignee: Takasago International CorporationInventors: Mitsuhiko Fujiwhara, Takenobu Nishikawa, Yoji Hori, Toshimitsu Hagiwara, Hisao Iwai, Takashi Miura
-
Patent number: 6172273Abstract: A composition is prepared by a method which comprises mixing a first solid material comprising a platinum group metal, a rhenium component, a porous carrier material and, optionally, a halogen component and a second solid material comprising silica and bismuth. The thus-obtained composition is employed as a catalyst in the conversion of hydrocarbons to aromatics. In an alternate embodiment, hydrocarbons are converted to aromatics by sequentially contacting the hydrocarbons with the first solid material and then the second solid material.Type: GrantFiled: February 23, 2000Date of Patent: January 9, 2001Assignee: Phillips Petroleum CompanyInventors: An-hsiang Wu, Charles A. Drake
-
Patent number: 6100373Abstract: Functionalized diene monomers and polymerized functionalized diene monomers including 2-cyanomethyl-1,3-butadiene, 2-acetoxymethyl-buta-1,3-diene, dimethyl-(2-methylene-but-3-enyl)-amine, 2-dimethylaminomethyl-1,3-butadiene, 2-di-n-propylaminomethyl-1,3-butadiene, 3-methylene-pent-4-enoic acid, 3-methylene-pent-4-enoic acid ethyl ester, bis-2,3-[N,N-diethylaminomethyl]-1,3-butadiene, ethyl-5,6-dimethylenedecanediote, and cyano- 5,6-dimethylenedecanediote. Methods for synthesizing such functionalized diene monomers and polymers are also provided.Type: GrantFiled: August 24, 1998Date of Patent: August 8, 2000Assignee: Iowa State University Research Foundation, Inc.Inventor: Valerie V. Sheares
-
Patent number: 6072021Abstract: This invention concerns a process for the copolymerization of formaldehyde with cyclic ethers, the process comprising combining in a hydrocarbon solvent a cyclic ether, a cationic initiator comprising an anion formed from tetraphenyl borate derivatives, and mixtures thereof, and a cation, and anhydrous formaldehyde. These initiators provide high activity, high cyclic ether incorporation rates, and stability while minimizing the production of by-products.Type: GrantFiled: October 21, 1998Date of Patent: June 6, 2000Assignee: E. I. du Pont de Nemours and CompanyInventors: Douglas John Adelman, Richard Beckerbauer
-
Patent number: 5939595Abstract: A process for preparing diarylethanes of the general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each hydrogen or C.sub.1 -C.sub.8 -alkyl, by reacting aromatic compounds of the general formula II ##STR2## where R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 have the abovementioned meanings, with styrenes of the general formula III ##STR3## where R.sup.1 has the abovementioned meanings, at from -20 to 300.degree. C. under from 1 to 100 bar in the presence of heterogeneous catalysts, wherein beta-zeolites or mordenites are used as heterogeneous catalysts.Type: GrantFiled: April 26, 1996Date of Patent: August 17, 1999Assignee: BASF AktiengesellschaftInventors: Eugen Gehrer, Klemens Massonne, Hermann Gausepohl, Martin Fischer, Christopher William Rieker, Lorenz Siggel
-
Patent number: 5866733Abstract: Diarylethanes of the formula I ##STR1## where R.sup.1 is hydrogen or C.sub.1 -C.sub.8 -alkyl, are prepared by reacting benzene with a styrene of the formula III ##STR2## where R.sup.1 has the abovementioned meanings, by a process in which the reaction is carried out batchwise or continuously in the liquid or supercritical phase at from 150.degree. to 350.degree. C. and from 5 to 200 bar in the presence of a strongly acidic large-pore zeolite.Type: GrantFiled: July 12, 1996Date of Patent: February 2, 1999Assignee: BASF AktiengesellschaftInventors: Eugen Gehrer, Klemens Massonne, Wolfgang Harder
-
Patent number: 5755956Abstract: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a catalyst containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst and a nonacidic large-pore molecular sieve. The use of this bed of catalyst results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.Type: GrantFiled: December 13, 1996Date of Patent: May 26, 1998Assignee: UOPInventors: Leonid B. Galperin, Paula L. Bogdan, Edwin Paul Boldingh
-
Patent number: 5744666Abstract: A process for preparing an alkynyl fulvene group containing compound and said compound is provided. Said process comprises reacting an alkynyl ketone compound with a cyclopentadienyl-type compound.Type: GrantFiled: December 6, 1996Date of Patent: April 28, 1998Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Bernd Peifer, Helmut G. Alt
-
Patent number: 5728908Abstract: A process for preparing a bridged ligand, where said bridged ligand has an alkynyl group, and said bridged ligand is provided. Said process comprises reacting an alkynyl fulvene containing compound with an alkali metal salt of a cyclopentadienyl-type compound.Type: GrantFiled: December 6, 1996Date of Patent: March 17, 1998Assignee: Phillips Petroleum CompanyInventors: M. Bruce Welch, Bernd Peifer, Helmut G. Alt
-
Patent number: 5644018Abstract: Mesophase pitch that has a softening point of no more than 250.degree. C., a pyridine-insolubles content of no more than 50% and a n-heptane solubles content of 3-10%, with the n-heptane solubles experiencing a weight loss of no more than 15% at 450.degree. C. as measured by thermogravimetry is produced by polymerizing a condensed polycyclic aromatic hydrocarbon or a substance containing it in the presence of HF and BF.sub.3. This mesophase pitch is suppressed satisfactorily in its tendency to smoke during spinning and, additionally, it has a low enough softening point to exhibit outstanding spinnability. Hence, the pitch allows for high-volume spinning to be performed continuously for a prolonged time without causing extensive fouling of the surface of spinning nozzles.Type: GrantFiled: June 30, 1995Date of Patent: July 1, 1997Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takashi Kojima, Yasuhiro Hirai, Takafumi Yoshimura
-
Patent number: 5545786Abstract: Nitroxyl inhibitors in combination with some oxygen reduce the premature polymerization of vinyl aromatic monomers during the manufacturing processes for such monomers. Even small quantities of air used in combination with the nitroxyl inhibitors result in vastly prolonged inhibition times for said monomers.Type: GrantFiled: February 3, 1995Date of Patent: August 13, 1996Assignee: Ciba-Geigy CorporationInventors: Roland A. E. Winter, Volker H. von Ahn
-
Patent number: 5449450Abstract: Hydrocarbon conversion processes are described which use novel microporous compositions. These compositions have a three-dimensional microporous framework structure of ZnO.sub.2, PO.sub.2 and M'O.sub.2 tetrahedral units, and an intracrystalline pore system. The M' metal is selected from the group consisting of magnesium, copper, gallium, aluminum, germanium, cobalt, chromium, iron, manganese, titanium and mixtures thereof. Examples of the hydrocarbon conversion processes include hydrocracking, hydrotreating and hydrogenation.Type: GrantFiled: December 15, 1993Date of Patent: September 12, 1995Assignee: UOPInventor: Robert L. Bedard
-
Patent number: 5202514Abstract: Benzyltoluene/dibenzyltoluene oligomers essentially devoid of contaminating amounts of chlorine values, well adapted as dielectric liquids, are prepared by (a) condensing benzyl chloride with toluene or with lower benzyltoluene oligomers in the presence of a catalytically effective amount of ferric chloride, and then (b) directly dechlorinating the crude product of condensation, e.g., by contacting same with sodium methylate.Type: GrantFiled: December 28, 1990Date of Patent: April 13, 1993Assignee: AtochemInventors: Raymond Commandeur, Daniel Missos
-
Patent number: 5194619Abstract: The compounds of the formula I or Ia ##STR1## in which R.sup.1 is alkyl, aryl, alkoxy, alkenyl, arylalkyl, alkylaryl, aryloxy, fluoroalkyl, halogenoaryl, alkynyl, trialkylsilyl or a heteroaromatic radical,R.sup.2, R.sup.3 and R.sup.4, in addition to hydrogen, have the meanings given under R.sup.1 andR.sup.5 is hydrogen, alkyl, fluoroalkyl or alkenyl, can be obtained in a one-stage process by reaction of a compound II ##STR2## with (substituted) cyclopentadiene in the presence of a base. The compounds I and Ia are suitable as ligands for metallocene complexes which are used as catalysts in olefin polymerization.Type: GrantFiled: February 14, 1992Date of Patent: March 16, 1993Assignee: Hoechst AktiengesellschaftInventors: Dieter Reuschling, Jurgen Rohrmann, Gerhard Erker, Reiner Nolte, Michael Aulbach, Astrid Weiss
-
Patent number: 5136114Abstract: The invention relates to a new process for the preparation of geminal diarylalkanes of the formula ##STR1## by Friedel-Crafts alkylation of aromatic compounds with specific aliphatic halogen compounds (addition compounds of CCl.sub.4 , to .alpha.-olefins), to new geminal diarylalkanes and the aralkyl compounds resulting as intermediates.Type: GrantFiled: April 30, 1990Date of Patent: August 4, 1992Assignee: Bayer AktiengesellschaftInventor: Dieter Arlt
-
Patent number: 5066779Abstract: The present invention discloses a process for producing a raw material pitch for carbon materials containing a slight amount of ash, the comprising steps of adding aluminum chloride to naphthalene or its derivative as a catalyst; polymerizing said naphthalene or its derivative at a temperature of 100.degree. to 330.degree. C., adding water to the polymer, under stirring if necessary; maintaining the mixture in an emulsified state for a predetermined time under stirring, breaking an emulsion, removing a water layer from the polymer.Type: GrantFiled: January 30, 1990Date of Patent: November 19, 1991Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Ikuo Seo, Tooru Oono, Yosinobu Murakami
-
Patent number: 5053547Abstract: A compound of formula (I) ##STR1## its isomers and its salts in which --R.sub.1, R.sub.3 and R.sub.4 are each independently hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, halogen, C.sub.1 -C.sub.8 -acyloxy or hydroxyl;--R' is hydrogen or C.sub.1 -C.sub.6 -alkyl;--R" is either a polyene chain or a benzene ring are useful in cosmetics and in the treatment of various dermatological and other complaints.Type: GrantFiled: November 14, 1989Date of Patent: October 1, 1991Assignee: L'OrealInventors: Gerard Lang, Jean Maignan, Serge Restle, Braham Shroot
-
Patent number: 5037994Abstract: A regioselective nitration process for diphenyl compounds which can be carried out at about ambient temperature in which each ring of the diphenyl compound is selectively nitrated in the para position to form the corresponding di(4-nitrophenyl) compound. Such compounds as diphenyl carbonate, 2,2-diphenylpropane, 2,2-diphenylhexafluoropropane, diphenyl sulfide, diphenyl ketone, diphenyl sulfone, and the like can be converted to an isomeric mixture containing an enhanced amount of the corresponding di(4-nitrophenyl) compound, which mixture may be reduced or purified and reduced to the di(4-aminophenyl) analogues for use in the manufacture of polyamides, polyimides, and polyamide-imides.Type: GrantFiled: February 8, 1990Date of Patent: August 6, 1991Assignee: Amoco CorporationInventors: Allen B. Mossman, Weilong L. Chiang
-
Patent number: 5017729Abstract: Phenol is produced in a recycle manner by (a) reacting benzene with propylene to synthesize cumene, (b) oxidizing the cumene of step (a) into cumene hydroperoxide, (c) acid cleaving cumene hydroperoxide into phenol and acetone, (d) hydrogenating the acetone of step (c) into isopropanol, (e) dehydrating the isopropanol of step (d) into propylene, and (f) recycling the propylene of step (e) to step (a). It is also possible to take propylene from step (e). The acetone by-product produced upon preparation of phenol is converted into propylene which is useful by itself for any other uses or recycled to the phenol producing process.Type: GrantFiled: September 5, 1989Date of Patent: May 21, 1991Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Hiroshi Fukuhara, Fujihisa Matsunaga
-
Patent number: 5008460Abstract: Synthetic lubricating oils having a predetermined alkylaromatic structure are prepared from a mixture of mono- or dialkenyl benzene with an aliphatic olefin by free-radical reaction in the presence of ditertiary-butyl peroxide, for example. Equivalent napthalene derivatives may be substituted for the dialkenyl benzene. The oils that are formed exhibit a high Viscosity Index, and a low pour point. The viscosity of the synthetic lube stock produced may be controlled by changing the amount of peroxide used.Type: GrantFiled: May 30, 1989Date of Patent: April 16, 1991Assignee: Mobil Oil Corp.Inventors: William E. Garwood, Quang N. Le, Joosup Shim, Stephen S. Wong
-
Patent number: 4986893Abstract: Disclosed herein is a process for producing a substantially quinoline-soluble and optically anisotropic pitch for carbon materials, which process comprises the steps of (1) polymerizing naphthalene by heating at a temperature of not higher than 330.degree. C. for 0.5 to 100 hours in the presence of Lewis acid catalyst, (2) removing said catalyst from the reaction mixture, (3) subjecting said reaction mixture to thermal treatment at a temperature of 390.degree. to 450.degree. C. for 1 to 5 hours under a pressure of not less than an atmospheric pressure so as to produce neither a quinoline-insoluble pitch nor optically anisotropic pitch, thereby carrying out aromatization of the polymerizate of naphthalene, and (4) heating the thus treated material at a temperature of 350.degree. to 380.degree. C. for 3 to 10 hours under a reduced pressure while flowing an inert gas, thereby removing the volatile components for said material, and the pitch produced by the process.Type: GrantFiled: January 4, 1990Date of Patent: January 22, 1991Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Ikuo Seo, Saburou Takahashi, Tooru Ohono
-
Patent number: 4956508Abstract: The invention relates to a process for preparing a polyalkyl perylene which consists in subjecting the corresponding polyalkyl 1,1'-dinaphthalene derivative to a cyclodehydrogenation reaction, by means of an alkali metal. It also relates to the polyalkyl perylene obtained, and to the organic material derived therefrom exhibiting an electron spin resonance spectrum.Type: GrantFiled: February 8, 1989Date of Patent: September 11, 1990Assignee: Thomson-CSFInventors: Philippe Michel, Alexandre Moradpour, Paul Penven
-
Patent number: 4950823Abstract: A process and apparatus are disclosed for the production of gasoline from a C.sub.4.sup.- fuel gas containing ethene and propene and catalytic reformate containing C.sub.6 to C.sub.8 aromatics. The C.sub.4.sup.- fuel gas is contacted with debutanized catalytic reformate over a zeolite catalyst under process conditions to convert ethene and propene in the C.sub.4.sup.- fuel gas to C.sub.5.sup.+ aliphatic and aromatic hydrocarbon gasoline and to convert C.sub.6 to C.sub.8 aromatics in the reformate to C.sub.7 to C.sub.11 aromatic hydrocarbon gasoline. Reformer fractionation system containing debutanizer column and separator stabilizes effluent gasoline and recycles unconverted light aromatics.Type: GrantFiled: July 3, 1989Date of Patent: August 21, 1990Assignee: Mobil Oil Corp.Inventors: Mohsen N. Harandi, Hartley Owen
-
Patent number: 4929784Abstract: Optionally substituted benzyl-benzenes can be prepared by reaction of a benzyl alcohol of the formula ##STR1## with a benzene of the formula ##STR2## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently of one another denote hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, fluorine or chlorine, where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another may also represent hydroxyl and R.sup.5 may additionally be C.sub.5 -C.sub.8 -alkyl,R.sup.6 represents hydrogen or one of the groups ##STR3## R.sup.8 denotes hydrogen or hydroxymethyl, in a ratio of 1 mole of benzene to 0.8-5 moles of benzyl alcohol in the presence of an amount of activated bleaching earth of 0.05-5% by weight, relative to the amount of benzyl alcohol, at a temperature between 90.degree. C. and 140.degree. C. in the presence of a diluent.Type: GrantFiled: October 11, 1989Date of Patent: May 29, 1990Assignee: Bayer AktiengesellschaftInventors: Kurt Klinkmann, Michael Herzhoff, Gerhard Burmeister
-
Patent number: 4925996Abstract: A process is disclosed for converting a feedstock containing ethylene to produce heavier hydrocarbons in the gasoline or distillate boiling range including the steps of contacting the olefins feedstock with a first siliceous crystalline molecular sieve at an elevated temperature and relatively low pressure under conditions which maximize the conversion of ethylene to C.sub.3 -C.sub.4 olefins and C.sub.5 + hydrocarbons, separating C.sub.3 -C.sub.4 olefins from the C.sub.5 + hydrocarbons, and contacting the separated C.sub.3 -C.sub.4 olefins with a second siliceous crystalline molecular sieve at moderate temperatures under conditions favorable for conversion of the C.sub.3 -C.sub.4 olefins to heavier hydrocarbons in the gasoline or distillate boiling range.Type: GrantFiled: December 16, 1985Date of Patent: May 15, 1990Assignee: Atlantic Richfield CompanyInventor: Harry Mazurek
-
Patent number: 4891126Abstract: Pitch that is obtained from a condensed polycyclic aromatic hydrocarbon and the content of an optically anisotropic phase in which is substantially 100% is disclosed. This mesophase pitch has a H/C atomic ratio of 0.5-1.0, contains naphthenic carbon in an amount of at least 7% of the total carbon, and has a softening point of 180.degree.-400.degree. C. Fibers melt-spun from this mesophase pitch can be converted to carbon or graphite fibers having high strength and modulus of elasticity by a heat treatment which consists of heating to a temperature of 250.degree.-300.degree. C. in an air atmosphere, then heating to 1,000.degree. C. or higher in an inert gas atmosphere. Such mesophase pitch is produced by polymerizing a condensed polycyclic aromatic hydrocarbon for 5-300 minutes at a temperature of 180.degree.-400.degree. C. and at a pressure of 5-100 atmospheres in the presence of 0.1-20 moles of HF and 0.05-1 mole of BF.sub.3 per mole of the condensed polycyclic aromatic hydrocarbon.Type: GrantFiled: November 22, 1988Date of Patent: January 2, 1990Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Isao Mochida, Yukio Sakai, Hiroyuki Otsuka
-
Patent number: 4835272Abstract: A process for formation of a base, which comprises reacting an acetylide compound with a salt. The acetylide compound has the following formula:(R--C.tbd.C--).sub.n Mwherein R is a monovalent group selected from the group consisting of an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group and a heterocyclic group, each of which may have one or more substituent groups; M is an n-valent transition metal atom; and n is 1, 2 or 3. The salt is composed of an anion having an affinity for the transition metal (M) (the affinity of the anion for the transition metal is more than that of the acetylide anion (R--C.tbd.C.crclbar.)), and a cation derived from one selected from the group consisting of an alkali metal, an alkaline earth metal, ammonia and an organic base. A light-sensitive material containing the acetylide compound and the salt is also disclosed.Type: GrantFiled: July 16, 1987Date of Patent: May 30, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Kozo Sato, Shunichi Ishikawa, Ken Kawata
-
Patent number: 4789455Abstract: A process for producing pitch useful as a starting material for the manufacture of a carbon material is provided. The pitch is produced by polymerizing a condensed nuclear aromatic compound or a material containing the same. The polymerization is carried out in the presence of a hydrogen fluoride/boron trifluoride catalyst system. The condensed nuclear aromatic compounds which may be used in this process are naphthalene, anthracene, phenanthrene, acenaphthene, acenaphthylene, pyrene and mixtures thereof.Type: GrantFiled: July 24, 1987Date of Patent: December 6, 1988Assignee: Mitsubishi Gas Chemical Co. Inc.Inventors: Isao Mochida, Susumu Fujiyama, Yukio Sakai, Hiroyuki Otsuka
-
Patent number: 4719190Abstract: Method of preparing a hydrocarbon conversion and polymerization catalyst comprising reacting an adsorbent containing surface hydroxyl groups with a Lewis acid in a halogenated organic solvent.Type: GrantFiled: October 22, 1986Date of Patent: January 12, 1988Assignee: University of FloridaInventors: Russell S. Drago, Edward E. Getty
-
Patent number: 4689436Abstract: Alkenyl-aromatic hydrocarbon derivatives are prepared by reaction of an aromatic hydrocarbon with an alkenyl-aromatic hydrocarbon in the presence of a heteropoly acid and/or a salt thereof.Type: GrantFiled: May 9, 1986Date of Patent: August 25, 1987Assignee: Idemitsu Kosan Company LimitedInventors: Tomiyasu Minokami, Yoshinori Saito, Toshiyuki Tsubouchi
-
Patent number: 4607116Abstract: Provided is a process for preparing a diaryl or a mixture of diaryls represented by any or a combination of the following formulae (II), (III) and (V), characterized in that a diaryliodonium salt represented by the following formula (I) is reacted in a solvent in the presence of a transition metal catalyst and a reducing metal at a temperature in the range of room temperature to 100.degree. C.:[Ar.sub.1 -I.sup..sym. -Ar.sub.2 ]X.sup..crclbar. (I)Ar.sub.1 -Ar.sub.1 (II)Ar.sub.1 -Ar.sub.2 (III)Ar.sub.2 -Ar.sub.2 (IV)wherein Ar.sub.1 and Ar.sub.2, which may be alike or different, are each an aryl group which may have a substituent group or groups and X.sup..crclbar. is a counter ion which is inert to said reaction.Type: GrantFiled: March 8, 1984Date of Patent: August 19, 1986Assignee: Nippon Petrochemicals Company LimitedInventors: Yasuo Yamazaki, Takehiko Suzuki, Masaharu Uchiyama