Alicyclic Patents (Class 585/20)
-
Patent number: 7589242Abstract: The present invention is drawn to the use of alkanes that are highly transparent to UV wavelengths ranging from about 170 nm to 260 nm in optical couplants, optical cements, optical elements, optical inspection media for semiconductor wafers and devices, and immersion photolithography, particularly at 193 and 248 nm exposure wavelength.Type: GrantFiled: September 14, 2005Date of Patent: September 15, 2009Assignee: E. I. du Pont de Nemours and CompanyInventors: Roger Harquail French, Sheng Peng, Robert Clayton Wheland
-
Publication number: 20090221778Abstract: A file is formed by coating a substrate with a film-forming composition including a compound having an alicyclic hydrocarbon structure and irradiating the coated composition with microwaves having a frequency of 5.8 GHz. An insulating film is formed by irradiating a film including a compound having a siloxane structure with microwave having a frequency of 5.8 GHz. These films possess excellent film properties such as dielectric constant and mechanical strength.Type: ApplicationFiled: February 25, 2009Publication date: September 3, 2009Applicant: FUJIFILM CoporationInventors: Makoto MURAMATSU, Akira ASANO, Kensuke MORITA
-
Publication number: 20090149314Abstract: Catalysts which are prepared by reducing catalyst precursors which comprise a) cobalt and b) one or more elements of the alkali metal group, of the alkaline earth metal group, of the group consisting of the rare earths or zinc or mixtures thereof, the elements a) and b) being present at least partly in the form of their mixed oxides, and a process for the preparation of these catalysts and the use thereof for the hydrogenation of unsaturated organic compounds. Furthermore, a process for regenerating these catalysts by treatment of the catalyst with a liquid is described.Type: ApplicationFiled: March 2, 2007Publication date: June 11, 2009Applicant: BASF SEInventors: Martin Ernst, Thilo Hahn, Johann-Peter Melder
-
Patent number: 7531081Abstract: A lubricating base oil composition having at least 95 wt % saturates, of which saturates fraction between 10 and 30 wt % are cyclo-paraffins and the remainder being n- and iso-paraffins, having a viscosity index of above 120 and a pour point of below ?15° C.Type: GrantFiled: February 13, 2002Date of Patent: May 12, 2009Assignee: Shell Oil CompanyInventors: Mervyn Frank Daniel, Gilbert Robert Bernard Germaine, David John Wedlock
-
Patent number: 7531083Abstract: Cycloalkane base oil, methods of making cycloalkane base oil, and dielectric liquid comprising cycloalkane base oil, the cycloalkane base oil comprising a quantity of isoparaffins and from 50 wt. % to 70 wt. % cycloalkanes having the formula CnH2n wherein n is from 15 to 30, said quantity of isoparaffins being less than 50 wt. % of said cycloalkane base oil.Type: GrantFiled: June 15, 2005Date of Patent: May 12, 2009Assignee: Shell Oil CompanyInventors: Steven Allen Holmes, John Robert Powers, Michael Phillip Smith, Abraham Robert Dekraker
-
Patent number: 7507867Abstract: A bicyclo[2.2.1]heptane derivative represented by following general formula (1): wherein R1 and R2 each represent hydrogen atom or methyl group, and R3 represents methyl group or ethyl group. The derivative is suitable as a high viscosity hydrocarbon base material used for tackfiers for adhesives and process oils for rubber and resins.Type: GrantFiled: June 12, 2002Date of Patent: March 24, 2009Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshiyuki Tsubouchi, Yukio Yoshida, Motohisa Ido
-
Publication number: 20090017243Abstract: Thermally formed thermoplastic articles can be protected from stress cracking in the presence of stress cracking promoting compounds by forming a shaped article comprising a thermoplastic and a liquid hydrocarbon oil composition. We have found that the liquid hydrocarbon oil composition prevents the stress cracking promoting materials from interacting with the polymeric structure of the stressed container to prevent or inhibit stress cracking in such materials. The methods and compositions of the invention are particularly useful in preventing stress cracking in polyethylene terephthalate beverage containers during bottling operations during which the bottle is contacted with aqueous and non-aqueous materials such as cleaners and lubricants that can interact with the polyester to cause stress cracking particularly in the container base.Type: ApplicationFiled: October 31, 2007Publication date: January 15, 2009Applicant: Ecolab Inc.Inventors: Kimberly L. Person Hei, Joy G. Herdt, Minyu Li, Keith Darrell Lokkesmoe, Guang-Jong Jason Wei
-
Patent number: 7368615Abstract: A catalyst includes a cyclic imide compound having an N-substituted cyclic imide skeleton represented by following Formula (I): wherein X is an oxygen atom or a hydroxyl group, and having a solubility parameter of less than or equal to 26 [(MPa)1/2] as determined by Fedors method. The catalyst may further comprise a metallic compound. By allowing (A) a compound capable of forming a radical to react with (B) a radical scavenging compound in the presence of the catalyst, an addition or substitution reaction product between the compound (A) and the compound (B) or a derivative thereof can be obtained.Type: GrantFiled: October 5, 2005Date of Patent: May 6, 2008Assignee: Daicel Chemical Industries, Ltd.Inventors: Yasutaka Ishii, Tatsuya Nakano, Shinya Nagano, Naoto Okuyama
-
Patent number: 7329789Abstract: Carotenoids are extracted and/or enriched from a mixture containing such compounds. The extraction/enrichment process involves the use of liquefied or supercritical solvents to extract lipids and carotenoids from carotenoid-containing substrates. The extraction process can also be performed in two steps in which lipids and carotenoids are first removed from a carotenoid-containing substrate with a liquefied or supercritical solvent, and subsequently a liquefied or supercritical gas is used to separate the lipids from the carotenoids. The two step process can be reversed to first extract lipids with the liquefied or supercritical gas, and subsequently use the solvent to extract the carotenoids. The process is also applicable to yield an organic solvent-free product from a carotenoid-containing source that was first extracted using an organic solvent.Type: GrantFiled: October 25, 2002Date of Patent: February 12, 2008Assignee: Phasex CorporationInventors: Hans Schonemann, Anthony Gudinas, Kara Williams, Paula Wetmore, Val Krukonis
-
Patent number: 7244522Abstract: A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a compound selected from the group consisting of hydrocarbyl-substituted cyclopentanes, hydrocarbyl-substituted cyclopentenes, hydrocarbyl-substituted cyclopentadienes, and mixtures or derivatives thereof. The lubricant layer also may be used on a magnetic head for reading and writing information on a magnetic recording medium. The magnetic recording medium and the magnetic head may be used to manufacture computer disk drives, compact disk drives, audio equipment, and video equipment.Type: GrantFiled: October 18, 2005Date of Patent: July 17, 2007Assignee: Shell Oil CompanyInventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
-
Patent number: 7195828Abstract: A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a compound selected from hydrocarbyl-substituted cyclopentanes, hydrocarbyl-substituted cyclopentenes, hydrocarbyl-substituted cyclopentadienes, and mixtures or derivatives thereof and, optionally, one or more additives. The lubricant layer also may be used on a magnetic head for reading and writing information on a magnetic recording medium. The magnetic recording medium and the magnetic head may be used to manufacture computer disk drives, compact disk drives, audio equipment, and video equipment.Type: GrantFiled: October 4, 2001Date of Patent: March 27, 2007Assignee: Shell Oil CompanyInventors: Selda Gunsel, Clifford Venier, I-Ching Chiu
-
Patent number: 7056869Abstract: Hydrocarbon fluids are provided which have ASTM D-86 boiling point ranges within 235° C. to 400° C. and a naphthenic content greater than 60%, the naphthenics containing polycyclic materials, the fluids preferably have an aromatic content below 2% and an aniline point below 100° C. The fluids are particularly useful solvents for printing inks, drilling fluids, metal working fluids and as silicone extenders.Type: GrantFiled: March 6, 2003Date of Patent: June 6, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Pierre-Yves Guyomar, Olaf Peter Rudolf Keipert, Robert A. Verbelen, Gerd Merhof, Els H. Slachmuijlders, André A. Theyskens
-
Patent number: 7045488Abstract: Cyclic oligomers derivable from the copolymerization of isobutylene and isoprene can be hydrogenated to form 1-(2,2,4-trimethylpentyl)-2-isopropyl-3,3,5,5-tetramethylcyclohexane and related compounds, which are useful in lubricants such as a traction fluids.Type: GrantFiled: May 16, 2002Date of Patent: May 16, 2006Assignee: The Lubrizol CorporationInventors: Stuart L. Bartley, Douglas M. Barr, Richard M. Lange, Craig D. Tipton
-
Patent number: 7015178Abstract: Disclosed is a lubricant base oil composition that comprises (a) from 80 to 98% by mass of a naphthenic synthetic lubricant base oil having a flash point of not lower than 140° C. and (b) from 2 to 20% by mass of an alcohol/fatty acid ester having a flash point of not lower than 150° C. of which the alcohol has a gem-type dimethyl structure, or comprises (a) from 85 to 99% by mass of a naphthenic synthetic lubricant base oil having a flash point of not lower than 140° C. and (c) from 1 to 15% by mass of a mineral oil having a kinematic viscosity at 40° C. of from 0.9 to 9.6 mm2/sec, a boiling point under normal pressure of from 150 to 400° C. and a % CA measured through ring analysis (in n-d-M process) of at most 10%. The lubricant base oil composition has a flash point of not lower than 150° C. and has a high traction coefficient at high temperatures, and its low-temperature flowability characteristic is good. The oil composition is favorable for traction drive fluid.Type: GrantFiled: May 24, 2002Date of Patent: March 21, 2006Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hidetoshi Koga, Hitoshi Hata, Toshiyuki Tsubouchi
-
Publication number: 20040260129Abstract: A polyunsaturated hydrocarbon, 6-(2,7-octadienyl)-1,4-cyclooctadiene. 6-(2,7-Octadienyl)- 1,4-cyclooctadiene is prepared by reacting butadiene-1,3 in the presence of a catalyst system consisting of a nickel complex, an organic phosphite and dialkylaluminum alkoxide, removing unreacted butadiene-1,3 starting material and cyclooctadiene and cyclododecatriene material formed in the reaction from the reaction product obtained, and fractionally distilling 6-(2,7-octadienyl)-1,4-cyclooctadiene from the material obtained after the distillative separation of butadiene-1,3, cyclooctatriene and C12 compounds.Type: ApplicationFiled: April 26, 2004Publication date: December 23, 2004Inventors: Norbert Wilczok, Matthias May, Martin Knaack
-
Patent number: 6828283Abstract: The present invention includes a traction fluid that includes an alkyl bridged dimer of bicycloheptane. Methods of using alkyl bridged dimers of bicycloheptane in traction fluids are also disclosed.Type: GrantFiled: February 5, 2003Date of Patent: December 7, 2004Assignee: Genberal Motors CorporationInventors: Thomas J. Chapaton, Tenneille W. Capehart, James L. Linden
-
Publication number: 20040220432Abstract: The present invention provides a method for extracting carotenoids from green plant materials using supercritical fluid extraction. A first and second supercritical fluid extraction is performed on the green plant composition at two different pressures to obtain two extracts. The first extract includes substantial amounts of &bgr;-carotene. The second extract may have a controlled concentration of &bgr;-carotene, and includes substantial amounts of lutein.Type: ApplicationFiled: February 2, 2004Publication date: November 4, 2004Inventor: Lance B. Crombie
-
Patent number: 6797193Abstract: Process for manufacturing temperature-sensitive polymers utilizing a heat transfer fluid comprising a hydrocarbon fluid selected from aliphatic hydrocarbons, alicyclic hydrocarbons, aliphatic- or alicyclic-substituted aromatic hydrocarbons, or mixtures thereof, the hydrocarbon fluid having a boiling point from 220° C. to 250° C. and a melting point less than 40° C., and temperature-sensitive polymer articles produced therefrom.Type: GrantFiled: April 10, 2002Date of Patent: September 28, 2004Assignee: Solutis, Inc.Inventors: Jerry L. Brown, Patrick P. B. Notte
-
Patent number: 6784328Abstract: The invention relates to a method of selectively producing adamantanes in a production apparatus made of an inexpensive material, not having any negative influence on the natural environment. The method for producing adamantanes includes isomerizing a tricyclic saturated hydrocarbon having at least 10 carbon atoms in the presence of a metal-carrying solid acid catalyst, wherein an unsaturated bond-having compound is made to coexist along with the catalyst during the isomerization.Type: GrantFiled: March 4, 2003Date of Patent: August 31, 2004Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Akio Kojima, Masao Saito
-
Publication number: 20040152931Abstract: The present invention includes a traction fluid that includes an alkyl bridged dimer of bicycloheptane. Methods of using alkyl bridged dimers of bicycloheptane in traction fluids are also disclosed.Type: ApplicationFiled: February 5, 2003Publication date: August 5, 2004Inventors: Thomas J. Chapaton, Tenneille W. Capehart, James L. Linden
-
Patent number: 6770618Abstract: Trans-2,2,6-trimethylcyclohexyl methyl ketone, including (1S,6R)-2,2,6-trimethylcyclohexyl methyl ketone represented by the formula (1a): and (1R,6S)-2,2,6-trimethylcyclohexyl methyl ketone represented by the formula (1b): are useful components in a perfume composition. A process for producing the same is also described. A unique eucalyptus, mint-like and white floral perfume material is provided using the ketone compounds disclosed in the present invention. The process of the present invention produces the optically active ketone compounds having optical purity up to at least 98.0 % e.e.Type: GrantFiled: June 7, 2001Date of Patent: August 3, 2004Assignee: Takasago International Corp.Inventors: Hideo Ujihara, Shinya Watanabe, Takeshi Yamamoto, Toshimitsu Hagiwara
-
Publication number: 20030216264Abstract: Cyclic oligomers derivable from the copolymerization of isobutylene and isoprene can be hydrogenated to form 1-(2,2,4-trimethylpentyl)-2-isopropyl-3,3,5,5-tetramethylcyclohexane and related compounds, which are useful in lubricants such as a traction fluids.Type: ApplicationFiled: May 16, 2002Publication date: November 20, 2003Applicant: The Lubrizol CorporationInventors: Stuart L. Bartley, Douglas M. Barr, Richard M. Lange, Craig D. Tipton
-
Publication number: 20030215740Abstract: A resist composition comprising a base polymer having sulfone or sulfonate units introduced therein is sensitive to high-energy radiation below 300 nm, is endowed with excellent adherence to substrates while maintaining transparency, and is suited for lithographic microprocessing.Type: ApplicationFiled: March 26, 2003Publication date: November 20, 2003Inventors: Yuji Harada, Jun Hatakeyama, Masaru Sasago, Masayuki Endo, Shinji Kishimura
-
Patent number: 6620982Abstract: A process for producing cyclopentane from by-product streams containing cyclopentene consists of distilling the cyclopentene from the feedstream and then hydrotreating the cyclopentene-containing fraction to cyclopentane. A second distillation step may then be employed to remove the hydrocarbons which are lighter than cyclopentane. The process has particular applicability in the treatment of feedstreams containing neo-hexane. The cyclopentene is easily separated from the neo-hexane in a conventional fractionator.Type: GrantFiled: October 7, 1998Date of Patent: September 16, 2003Assignee: Equistar Chemicals, LPInventor: Richard B. Halsey
-
Patent number: 6521771Abstract: The present invention describes the use of zinc treated with metal hydride in organometallic synthesis.Type: GrantFiled: May 17, 2001Date of Patent: February 18, 2003Assignee: Goldschmidt AGInventors: Georg Frommeyer, Wilfried Knott, Andreas Weier, Jurij Weiss, Dagmar Windbiel
-
Publication number: 20030004090Abstract: The compound according to the formula set forth below 1Type: ApplicationFiled: May 17, 2001Publication date: January 2, 2003Inventors: Anthony T. Levorse, Anubahv P.S. Narula, Edward Mark Arruda, Charles E.J. Beck
-
Patent number: 6491809Abstract: Synthetic oil that contains wholly or partly of dialkylbenzenes and/or partially or totally hydrogenated dialkylbenzenes. The synthetic oil according to the invention can also be used as an oil base or oil base additive and comprises at least one dialkylbenzene and/or at least one partially or totally hydrogenated dialkylbenzene and meets the general chemical formula: R1—A—R2 in which R1 and R2 represent alkyl groups and A is a benzene core and/or a cyclohexane core and/or a cyclohexene core and/or a cyclohexadiene core and is characterized in that it contains between 1 and 20% by weight or ortho isomers and in that at least one of the alkyl groups is attached for the most part to group A by carbon 2 of the aliphatic chain. The two alkyl groups are preferably attached for the most part to group A by carbon 2 of the aliphatic chain.Type: GrantFiled: September 27, 2000Date of Patent: December 10, 2002Assignees: Institut Francais du Petrole, Industrias Venoco C.A.Inventors: Patrick Briot, Alain Forestiere, Serge Gautier, Eric Benazzi, Leon Lew
-
Patent number: 6482966Abstract: A process for producing a crosslink-cyclized cyclopentadiene, comprising the steps of reacting a cyclopentenone with an alkali metal hydride to thereby reduce the cyclopentenone (reduction step A) into a cyclopentenol; and reacting the cyclopentenol with a dehydrating agent to thereby dehydrate the cyclopentenol (dehydration step B) into a crosslink-cyclized cyclopentadiene of the general formula (III): wherein each of R1 and R2 independently represents a hydrogen atom or a linear or branched saturated alkyl group having 1 to 6 carbon atoms, n is an integer of 3 to 10, and the broken line in the 5-membered ring denotes that the 5-membered ring has two double bonds.Type: GrantFiled: January 31, 2001Date of Patent: November 19, 2002Assignee: Honshu Chemical Industry Co., Ltd.Inventor: Keiichi Yokoyama
-
Patent number: 6417418Abstract: A “bridged” bis-cyclopentadienyl complex which can be advantageously used for the formation of a catalytic system active in the (co)polymerization of ethylene and other &agr;-olefins is represented by means of the following formula (II): wherein: M represents a metal selected from titanium, zirconium or hafnium; A′ and A″ each independently represent an anion containing an &eegr;5-cyclopentadienyl ring coordinated to M; R′ or R″ each independently represents a group of an anionic nature &sgr;-bound to the metal M; B represents an unsaturated bivalent organic residue having from 1 to 30 carbon atoms, bound, respectively, to the ring of group A′ and to the —CH2-methylene group by means of carbon atoms.Type: GrantFiled: February 23, 2001Date of Patent: July 9, 2002Assignee: Enichem S.p.A.Inventors: Roberto Santi, Giampietro Borsotti, Gianfranco Longhini, Paolo Biagini, Antonio Proto, Francesco Masi, Viviano Banzi
-
Patent number: 6410810Abstract: A mixture of bis- and tris(fluoroaryl)borane compounds expressed by General Formula (1) below is handled in the form of a slurry made with a hydrocarbon solvent: where each of R1, R2, R3, R4 and R5 independently represents a hydrogen atom, a fluorine atom, a hydrocarbon group, or an alkoxy group provided that at least one of R1-R5 represents a fluorine atom, X represents a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom, and wherein n represents 2 for the bis(fluoroaryl)borane compounds and 3 for the tris(fluoroaryl)borane compounds. Then, a hydrocarbon solution of the (fluoroaryl)borane compounds having a concentration of the tris(fluoroaryl)borane compounds in a range between 1 wt % and 1 wt % is prepared by dissolving the slurry into a hydrocarbon solvent in a virtually air-tight vessel.Type: GrantFiled: February 24, 2000Date of Patent: June 25, 2002Assignee: Nippon Shokubai Co., Ltd.Inventors: Hitoshi Mitsui, Tsunemasa Ueno, Ikuyo Ikeno, Naoko Hirano
-
Patent number: 6319879Abstract: Derivatives of bicyclo[2.2.1]heptane in the invention have a high traction coefficient under high temperature and an excellent viscosity characteristic under low temperature and are useful for the fluid for a traction drive, and a method in the invention produces such derivatives economically and efficiently.Type: GrantFiled: June 28, 1999Date of Patent: November 20, 2001Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yukio Yoshida, Toshiyuki Tsubouchi, Motohisa Ido, Hitoshi Hata
-
Patent number: 6291719Abstract: The present invention relates to a method of catalyzing etherification, esterification, hydration, ether cleavage, isomerization alkylation, or other reactions which are catalyzable with an acid or molecular sieve catalyst. Said reactions are conducted using a novel, dual functional catalyst prepared with active components and a small amount of binder, wherein said dual functional catalyst comprises cylindrical pellets which are molded such that a cross-section or each pellet has a window lattice shape with external teeth, or a star shape with inner spokes.Type: GrantFiled: August 29, 2000Date of Patent: September 18, 2001Assignees: China Petro-Chemical Corporation, Qilu Petro-Chemical Corporation SinopecInventors: Buliang Gao, Jinyong Zhang, Jinshan Wang, Xingren Hao, Zaiqun Yu, Wei Wang
-
Patent number: 6284936Abstract: It has been discovered that the polymerization of vinyl aromatic compounds, such as styrene, may be inhibited by the addition of a composition that contains an alkyl-dihydroxyarene, a hydrogen transfer agent, and a stable nitroxide. In another, preferred embodiment of the invention, these three components are blended in an organic amine.Type: GrantFiled: December 21, 2000Date of Patent: September 4, 2001Assignee: Baker Hughes IncorporatedInventor: Muslim D. Shahid
-
Patent number: 6242393Abstract: A traction drive fluid comprises a tractant selected from the specific types of hydrocarbons, carboxylates and carbonate, optionally an effective amount of a base oil selected from a mineral oil and a synthetic oil and additives selected from a viscosity index improver, a ashless dispersant, a phosphorus-containing additive, a friction adjusting agent, a metallic detergent, an oxidation inhibitor, a polar additive, a corrosion inhibitor, a rubber swelling agent, a antifoamer and a colorant.Type: GrantFiled: April 8, 1999Date of Patent: June 5, 2001Assignee: Nippon Mitsubishi Oil CorporationInventors: Noboru Ishida, Junya Kohno, Shinichi Shirahama, Tetsuo Okawa
-
Patent number: 6191330Abstract: Disclosed is a traction drive fluid which comprises (A) one or more than two compounds selected from the group consisting of saturated polycyclic hydrocarbon compounds represented by the formulae: wherein R1 and R2 are each independently hydrogen or a methyl group, provided that the case where both R1 and R2 are a methyl group at the same time is excluded, and R3 and R4 are each independently hydrogen or a methyl group; wherein R5 and R6 are each independently hydrogen or a methyl group, provided that the case where both R5 and R6 are a methyl group at the same time is excluded, R7 and R8 are each independently hydrogen or a methyl group; and wherein R9, R10 and R11 are each independently hydrogen or a methyl group.Type: GrantFiled: September 16, 1999Date of Patent: February 20, 2001Assignees: Nippon Mitsubishi Oil Corporation, San-Petrochemical Co., Ltd.Inventors: Mitsuo Matsuno, Shinichi Shirahama, Tetsuo Okawa, Takashi Kiyota
-
Patent number: 6153804Abstract: A process for producing cyclopentane and cyclopentene by fractional distillation of partly hydrogenated pyrolysis gasoline, in which(a) partly hydrogenated pyrolysis gasoline is fractionally distilled in a first distillation column,(b) a C.sub.5 hydrocarbon mixture containing at least 40% of cyclopentane and cyclopentene is taken off from the distillation column as a sidestream at a suitable tray, and(c) the C.sub.5 hydrocarbon mixture is further fractionally distilled into cyclopentane and cyclopentene in a second distillation column.Type: GrantFiled: March 18, 1997Date of Patent: November 28, 2000Assignee: BASF AktiengesellschaftInventors: Ulrich Kanne, Jurgen Heners, Thomas Krug
-
Patent number: 6126857Abstract: The invention relates to bisalkenylbicyclohexanes of the formula I ##STR1## in which R.sup.1, R.sup.2 and Z are as defined in claim 1, and to their use in liquid-crystalline media.Type: GrantFiled: October 1, 1997Date of Patent: October 3, 2000Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Volker Reiffenrath, Harald Hirschmann
-
Patent number: 6086782Abstract: Heat transfer fluid compositions comprising (a) a terpene component, comprising at least one terpene; and (b) an alkylbenzene component, comprising at least one alkylbenzene; wherein the components are provided in an effective amount such that the 5resultant composition retains the liquid phase at temperatures in the range from about 0.degree. F. to below about -120.degree. F., preferably from about 0.degree. F. to about -175.degree. F.Type: GrantFiled: July 2, 1996Date of Patent: July 11, 2000Assignee: Advanced Fluid Technologies, Inc.Inventors: James T. Hsu, Kenneth F. Wieland, Satish Mohapatra, Daniel J. Loikits
-
Patent number: 6028237Abstract: The present invention relates generally to novel methods for the synthesis of cyclopropylacetylene which is a reagent in the asymmetric synthesis of (S)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-ben zoxazin-2-one which is a useful human immunodeficiency virus (HIV) reverse transcriptase inhibitor.Type: GrantFiled: December 15, 1997Date of Patent: February 22, 2000Assignee: DuPont Pharmaceuticals CompanyInventor: Rodney Lawrence Parsons, Jr.
-
Patent number: 6002062Abstract: Ethynylcyclopropane is prepared from (1,1-dimethoxyethyl)cyclopropane by a two-stage elimination of methanol. Ethynylcyclopropane is an intermediate in the synthesis of pharmaceutically active ingredients, for example, antiviral agents.Type: GrantFiled: December 4, 1998Date of Patent: December 14, 1999Assignee: Lonza AGInventors: Dominique Michel, Paul Hanselmann
-
Patent number: 5998683Abstract: A method for producing a cyclopentane product which comprises the following steps: (a) cracking dicyclopentadiene to form a cyclopentadiene-rich stream and a higher boiling liquids stream; (b) separating the cyclopentadiene-rich stream from the higher boiling liquids stream; (c) diluting the cyclopentadiene-rich stream with recycled saturates such that the cyclopentadiene content is limited to between about 5-50%; (d) conducting a first hydrogenation of the cyclopentadiene-rich stream in the presence of hydrogen and a first catalyst, and at a temperature (i.e., preferably between about 26 to 94.degree. C., more preferably in the range between about 37 to 66.degree. C.Type: GrantFiled: July 24, 1997Date of Patent: December 7, 1999Assignee: Exxon Chemicals Patents Inc.Inventors: James R. Lattner, C. Harry McMullen, Leonel E. Sanchez, Steven E. Silverberg, Tronze-I Dennis Wu
-
Patent number: 5955639Abstract: A copolymer of ethylene and an alpha-olefin having an ethylene content of from 30 to 90 mole %, a number average molecular weight of from 300 to 30,000 and a molecular weight distribution defined by a Q value (the ratio of the weight average molecular weight to the number average molecular weight) of not more than 3 and a Z value (the ratio of the maximum value of the molecular weight to the minimum value of the molecular weight when the molecular weight is measured by gel permeation chromatography) of from 15 to 200. The said copolymer can be produced by a process comprising copolymerizing ethylene with an alpha-olefin in the liquid phase in the presence of a polymerization catalyst composed of a combination of a soluble vanadium compound and an organoaluminum compound in the co-presence of hydrogen, characterized in that(a) the copolymerization is carried out in a continuous manner,(b) the concentration of the vanadium compound in the polymerization system is maintained at 0.Type: GrantFiled: July 29, 1993Date of Patent: September 21, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Hidekuni Oda, Tatuo Kinoshita, Akiyoshi Shimizu
-
Patent number: 5952537Abstract: The process of invention reacts an alkynyl halide with a mixture that includes a dialkylaminomagnesium halide or a bis(dialkylamino)magnesium compound to produce a cycloalkylacetylene compound. Preferably, the dialkylaminomagnesium halide compound is of the general formula R.sub.2 NMgX (where R is a linear, branched, or cyclic alkyl substituent or R.sub.2 N represents a heterocyclic alkyl amine and X is Cl, Br, or I) and the bis(dialkylamino)magnesium compound is of the general formula (R.sub.2 N).sub.2 Mg (where R is a linear, branched, or cyclic alkyl substituent or R.sub.2 N represents a heterocyclic alkylamine). In a preferred method of the invention, the reaction is conducted at moderate temperatures for a period of about 12 to 24 hours. The reaction mixture preferably includes tetrahydrofuran (THF), or a hydrocarbon, or a hydrocarbonether mixture.Type: GrantFiled: March 13, 1998Date of Patent: September 14, 1999Assignee: Wiley Organics, Inc.Inventors: Kurt R. Stickley, David B. Wiley
-
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: 5847247Abstract: The specification discloses terpene-based solvent compositions which comprise diterpenes as a major component and a minor amount of monoterpenes. The mixtures exhibit solvent properties similar to monoterpenes but have flash points high enough to be classified as combustible rather than flammable materials.Type: GrantFiled: March 18, 1996Date of Patent: December 8, 1998Assignee: Arizona Chemical CompanyInventors: Alexander J. Conte, Bobby G. Johnson, Raymond H. Jones, Claude F. Phillips, Jr.
-
Patent number: 5763700Abstract: A pesticidal compound, suitable for combating soil borne insect pests has formula I: ##STR1## in which formula: Ar.sub.A represents a phenyl or naphthyl group optionally substituted by one or more groups selected from halogen, alkoxy, haloalkoxy, methylenedioxy, C.sub.1 -C.sub.6 alkyl and C.sub.1 -C.sub.6 haloalkyl; andAr.sub.B represents a phenoxy, phenyl, benzyl or benzoyl-substituted phenyl group which is optionally further substituted;the configuration of the aryl cyclopropyl group and the group CH.sub.2 Ar.sub.B about the double bond being mutually trans.Type: GrantFiled: March 16, 1995Date of Patent: June 9, 1998Assignee: British Technology Group LimitedInventors: Bhupinder Pall Singh Khambay, Mu-Guang Liu
-
Patent number: 5723709Abstract: Terpene dimer compositions are provided which dry into a hard, tack free film upon exposure to air. The compositions include a terpene dimer having the molecular formula C.sub.20 H.sub.32 and contain at least one double bond. The terpene dimer is derived from a naturally occurring monoterpene, or mixtures thereof, having the molecular formula C.sub.10 H.sub.16. In an another embodiment the compositions, in addition to the terpene dimer, include isomers of the monoterpenes. The compositions are substantially free of higher terpene oligomers having molecular formulas greater than C.sub.20 H.sub.32. Processes for making the terpene dimer compositions are also provided. Advantageous utilization of these compositions is as a diluent, solvent or component in coating, adhesive, alkyd or ink formulations, as an environmentally safe non-toxic material.Type: GrantFiled: July 9, 1996Date of Patent: March 3, 1998Assignee: Arizona Chemical CompanyInventors: Claude Frank Phillips, Jr., James William Booth
-
Patent number: 5545790Abstract: A catalytic process for the dimerization of norbornene and/or norbornadiene using a reduced valence state Group VIB metal oxide as the catalyst, preferably Cr(II) on a porous support such as silica. The product norbornene dimer or norbornadiene dimer is obtained in high yield and high stereospecificity at greater than 90 weight percent of the exo-trans-exo stereoisomer. The norbornene dimer is useful as a high energy density fuel. The norbornadiene dimer can be further functionalized to yield novel chemical intermediates or polymerized or copolymerized with other olefins. The norbornadiene dimer can also be hydrogenated for high energy fuel applications.Type: GrantFiled: December 9, 1993Date of Patent: August 13, 1996Assignee: Mobil Oil CorporationInventors: Margaret M. Wu, Yusheng Xiong
-
Patent number: 5516884Abstract: Synthesis and characterization of polycarbynes, a new class of carbon-based random network polymers. The network backbones of the polymers are composed of tetrahedrally hybridized carbon atoms, each bearing one substituent and linked via three carbon-carbon single bonds into a three-dimensional continuous random network backbone. Silicon, germanium, tin, lead, Group 13 through Group 16 elements, lanthanides, and Group 4 metals can be incorporated into the polymer backbone. The atomic-level carbon network backbone confers unusual properties on the polymers, including thermal decomposition to form diamond or diamond-like carbon.Type: GrantFiled: March 9, 1994Date of Patent: May 14, 1996Assignee: The Penn State Research FoundationInventor: Patricia A. Bianconi