Two Benzene Rings Bonded Directly To The Same Oxygen, Sulfur, Or Polysulfide Chain Patents (Class 564/430)
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Patent number: 6809119Abstract: The invention relates to BCAT inhibitors and the use thereof for treating or preventing neuronal loss associated with stroke, ischemia, CNS trauma, hypoglycemia and surgery, as well as treating neurodegenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease and Down's syndrome, treating or preventing the adverse consequences of the overstimulation of the excitatory amino acids, treating anxiety, psychosis, convulsions, aminoglycoside antibiotics-induced hearing loss, migraine headache, chronic pain, neuropathic pain, Parkinson's disease, diabetic retinopathy, glaucoma, CMV retinitis, urinary incontinence, opioid tolerance or withdrawal, and inducing anesthesia, as well as for enhancing cognition.Type: GrantFiled: November 26, 2002Date of Patent: October 26, 2004Assignee: Warner-Lambert Company LLCInventors: Lain-Yen Hu, Suzanne Ross Kesten, Huangshu Lei, Todd Robert Ryder, David Juergen Wustrow
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Publication number: 20040049081Abstract: A bis-o-aminophenol has a formula I 1Type: ApplicationFiled: June 27, 2003Publication date: March 11, 2004Inventors: Andreas Walter, Ingo Gnuchtel, Anna Maltenberger, Recai Sezi, Horst Hartmann
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Publication number: 20040048004Abstract: A diaminobenzene derivative represented by the formula (1): 1Type: ApplicationFiled: June 26, 2003Publication date: March 11, 2004Inventors: Kazuyoshi Hosaka, Hideyuki Nawata, Takayasu Nihira
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Patent number: 6664425Abstract: 1,3-Bis(3-aminophenoxy)benzene effective, for example, as a raw material for highly heat-resistant polyimide is produced industrially at a high yield by a reaction between 1,3-difluorobenzene and an alkali metal salt of 3-aminophenol.Type: GrantFiled: September 5, 2002Date of Patent: December 16, 2003Assignee: Mitsui Chemicals, Inc.Inventors: Naoki Tomoshige, Yasuhiro Nukii, Masaru Wada, Koju Okazaki, Hidetoshi Hayashi
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Patent number: 6630540Abstract: This invention relates to covulcanizable anti-aging agents which can be produced by the reaction of p-phenylenediamines, which are optionally substituted, and/or of sterically hindered phenols, with bifunctional alkyl, aryl and/or aralkyl compounds and by subsequent reaction of the products thus obtained with sulfur and/or sulfur donor compounds. The anti-aging agents according to the present invention maintain their efficacy over a long period of time and are distinguished in particular by the fact that in practice, they are hardly extracted from the vulcanized products by water, by oil and/or petrol, or by hydraulic fluids.Type: GrantFiled: May 7, 2001Date of Patent: October 7, 2003Assignee: Bayer AktiengesellschaftInventors: Christian Laue, Markus Oberthür
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Patent number: 6596772Abstract: The invention relates to trifluoromethyl sulfonyl and trifluoromethyl sulfonamido compounds and the physiologically acceptable salts and the prodrugs thereof. These compounds are expected to modulate the activity of protein tyrosine enzymes which are related to cellular signal transduction, in particular, protein tyrosine phosphatase, and therefore are expected to be useful in the prevention and treatment of disorders associated with abnormal protein tyrosine enzyme related cellular signal transduction such as cancer, diabetes, immuno-modulation, neurologic degenerative diseases, osteoporosis and infectious diseases. The invention also relates to the use of compounds containing fluoromethyl sulfonyl groups as phosphate mimics. These mimics may be used to inhibit, regulate or modulate the activity of a phosphate binding protein in a cell.Type: GrantFiled: August 25, 2000Date of Patent: July 22, 2003Assignee: Sugen, Inc.Inventors: Ping Huang, Chung Chen Wei, Peng Cho Tang, Chris Liang, John Ramphal, Bahija Jallal, John Biltz, Sharon Li, Matt Mattson, Gerald McMahon, Marcel Koenig
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Publication number: 20030078454Abstract: 1,3-Bis(3-aminophenoxy)benzene effective, for example, as a raw material for highly heat-resistant polyimide is produced industrially at a high yield by a reaction between 1,3-difluorobenzene and an alkali metal salt of 3-aminophenol.Type: ApplicationFiled: September 5, 2002Publication date: April 24, 2003Inventors: Naoki Tomoshige, Yasuhiro Nukii, Masaru Wada, Hidetoshi Hayashi
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Patent number: 6552230Abstract: The invention relates to a process for preparing 2-nitro-5-(phenylthio)anilines of formula (I) wherein R1 represents hydrogen, C1-C8-alkyl, C3-C8-cycloalkyl, C1-C8-alkoxy, or halogen and R2 represents hydrogen, C1-C8-alkyl, C3-C8-cycloalkyl, C1-C8-alkoxy, halogen, or C6-C10-aryl optionally substituted with C1-C8-alkyl, C1-C8-alkoxy, or halogen, by reacting, in a solvent, a 5-chloro-2-nitroaniline of the formula (II) wherein R1 is as defined for formula (I), with a thiophenol of the formula (III) wherein R2 is as defined for formula (I), and ammonia.Type: GrantFiled: December 19, 2000Date of Patent: April 22, 2003Assignee: Bayer AktiengesellschaftInventors: Volker Glock, Willi Streicher, Friedrich-Wilhelm Ullrich
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Patent number: 6380423Abstract: The invention includes colorless compounds having a central core and at least two arms extending from the core. The core can comprise one or more atoms. The at least two arms have the formula In such formula, Z is a segment of one or more atoms; j is an integer from 1 to about 300 and can be different at one of the at least two arms than at another of the at least two arms; Q is an alkyl or aryl group and can vary amongst different alkyl and aryl groups within the colorless compound; and n is an integer greater than 1 and can be different at one of the at least two arms than at another of the at least two arms. In other aspects, the invention encompasses phase change inks incorporating the above-described colorless compound as toughening agent, and methods of printing with such phase change inks.Type: GrantFiled: May 23, 2001Date of Patent: April 30, 2002Assignee: Xerox CorporationInventors: Jeffrey H. Banning, Donald R. Titterington, Wolfgang G. Wedler
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Patent number: 6323243Abstract: The present invention provides compounds that block calcium channels and have the Formula I: and pharmaceutically acceptable salts, esters, and pro-drugs thereof, wherein R1 and R2 are independently H, phenylcyclopentylcarbonyl, C1-C7 alkyl, cyclohexylmethyl, benzyl, C1-C5 alkylbenzyl, or C1-C5 alkoxybenzyl, A is —C(O)— or —CH2—; R3 is H or —CH3; R4 is C1-C4 alkyl or piperidin-1-ylethyl; R5 is phenyl-(CH2)n—, C1-C4 alkylphenyl-(CH2)n—, or halophenyl-(CH2)n—; and n is 1 or 2. The present invention also provides pharmaceutical compositions containing the compounds of Formula I and methods of using them to treat stroke, cerebral ischemia, head trauma, and epilepsy.Type: GrantFiled: October 24, 2000Date of Patent: November 27, 2001Assignee: Warner-Lambert CompanyInventors: Michael Francis Rafferty, Yuntao Song
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Patent number: 6169206Abstract: 4-(N,N-Dialkylamino)aniline compounds of the following general formula (I): wherein R1 represents an alkyl group, an aryl group or a heterocyclic group, R2 to R5 each represent a hydrogen atom or a substituent, and R2 and R3, R1 and R2, or R4 and R5 may form a ring together; a processing composition for color photography, which contains at least one of these compounds; and a color image-forming method wherein at least one of these aniline compounds is used.Type: GrantFiled: January 24, 2000Date of Patent: January 2, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Keizo Kimura, Shigeo Hirano, Hiroshi Kawamoto
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Patent number: 6162832Abstract: A 2-phenoxyaniline derivative represented by the formula: ##STR1## wherein R.sup.1 is a hydrogen atom or a lower alkoxy group, R.sup.2 is a halogen atom or a nitro group, and R.sup.3 is a hydrogen atom or a halogen atom, or a pharmaceutically acceptable salt thereof.Type: GrantFiled: April 10, 2000Date of Patent: December 19, 2000Assignee: Taisho Pharmaceutical Co., Inc.Inventors: Tomomi Ota, Misa Nakanishi, Izumi Aibe, Minoru Taguchi, Kazuyuki Tomisawa
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Patent number: 6156801Abstract: A 2-phenoxyaniline derivative represented by the formula: ##STR1## wherein R.sup.1 is a hydrogen atom, an amino group or an NHCOR.sup.3 group, R.sup.2 is a halogen atom, an amino group, a cyano group, a C.sub.1-6 alkyl group, a C.sub.1-3 perfluoroalkyl group, an NHCOR.sup.3 group, a CH.sub.2 OR.sup.4 group, an OCH.sub.2 R.sup.5 group or a COR.sup.6 group, R.sup.3 is a C.sub.1-6 alkyl group, R.sup.4 is a hydrogen atom or a C.sub.1-6 alkyl group, R.sup.5 is a hydrogen atom, a C.sub.1-6 alkyl group, a C.sub.1-5 aminoalkyl group, a C.sub.2-7 alkoxy-carbonyl group or a carbamoyl group, and R.sup.6 is a C.sub.1-6 alkyl group or a C.sub.3-8 cycloalkyl group which is unsubstituted or substituted by a halogen atom, an amino group, a cyano group or a straight or branched C.sub.1-6 alkyl group; or a pharmaceutically acceptable salt thereof.Type: GrantFiled: September 15, 1999Date of Patent: December 5, 2000Assignee: Taisho Pharmaceutical Co., Ltd.Inventors: Tomomi Ota, Misa Nakanishi, Minoru Taguchi, Kazuyuki Tomisawa
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Patent number: 6069278Abstract: This invention relates the novel diamines, the polyimide oligomers and the polyimides derived therefrom and to the method of preparing the diamines, oligomers and the polyimides. The thermoplastic polyimides derived from the aromatic diamines of this invention are characterized as having a high glass transition temperature, good mechanical properties and improved processability in the manufacture of adhesives, electronic and composite materials for use in the automotive and aerospace industry. The distinction of the novel aromatic diamines of this invention is the 2,2',6,6'-substituted biphenyl radicals which exhibit noncoplanar conformation that enhances the solubility of the diamine as well as the processability of the polyimides, while retaining a relatively high glass transition temperature and improved mechanical properties at useful temperature ranges.Type: GrantFiled: November 23, 1999Date of Patent: May 30, 2000Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Chun-Hua K. Chuang
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Patent number: 6037499Abstract: This invention relates the novel diamines, the polyimide oligomers and the polyimides derived therefrom and to the method of preparing the diamines, oligomers and the polyimides. The thermoplastic polyimides derived from the aromatic diamines of this invention are characterized as having a high glass transition temperature, good mechanical properties and improved processability in the manufacture of adhesives, electronic and composite materials for use in the automotive and aerospace industry. The distinction of the novel aromatic diamines of this invention is the 2,2',6,6'-substituted biphenyl radicals which exhibit noncoplanar conformation that enhances the solubility of the diamine as well as the processability of the polyimides, while retaining a realatively high glass transition temperature and improved mechanical properties at useful temperature ranges.Type: GrantFiled: December 24, 1998Date of Patent: March 14, 2000Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Chun-Hua K. Chuang
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Patent number: 6008413Abstract: A process for purifying 1,3-bis(aminophenoxy benzene) (APB) on a manufacturing scale to at least 99.5% purity comprises the sequential steps of (a) forming the dihydrochloride salt of APB (hereinafter APB-HCl), (b) recrystallizing the APB-HCl from isopropyl alcohol, and (c) converting the APB-HCl to free APB.Type: GrantFiled: January 14, 1999Date of Patent: December 28, 1999Assignee: National Starch and Chemical Investment Holding CorporationInventor: Lawrence J. Scotchie
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Patent number: 5977413Abstract: Disclosed is a method for producing bis(3-amino-4-hydroxyphenyl) compounds, which comprises reducing bis(3-nitro-4-hydroxyphenyl) compounds with hydrazines in the presence of a catalyst. The method produces bis(3-amino-4-hydroxyphenyl) compounds of high quality under mild conditions at high yields. The products can be isolated and purified in a simple manner to have a higher purity. The method is suitable to industrial-scale production of the products.Type: GrantFiled: July 28, 1998Date of Patent: November 2, 1999Assignee: Nippon Kayaku Kabushiki KaishaInventors: Jun-ichiro Tomaru, Kenji Kunikata, Masaki Fujimoto
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Patent number: 5910578Abstract: Azo dyes of the formula ##STR1## where X is oxygen or a radical of the formula NR.sup.6, where R.sup.6 is hydrogen or substituted or unsubstituted C.sub.1 -C.sub.13 -alkyl,R.sup.1 is substituted or unsubstituted C.sub.1 -C.sub.13 -alkyl or substituted or unsubstituted phenyl,Y is hydrogen, halogen or cyano,Z is nitro or additionally cyano when Y is halogen or cyano,R.sup.2 is C.sub.1 -C.sub.4 -alkyl, methoxymethyl or substituted or unsubstituted phenyl,R.sup.3 is hydrogen, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkyl, andR.sup.4 and R.sup.5 are each substituted or unsubstituted C.sub.2 -C.sub.13 -alkyl or C.sub.2 -C.sub.6 -alkenyl,are useful for dyeing or printing synthetic materials and are synthesizable using novel dinitroaminoaromatics as diazo components.Type: GrantFiled: July 15, 1998Date of Patent: June 8, 1999Assignee: BASF AktiengesellschaftInventors: Peter Saling, Erhard Klahr, Helmut Reichelt, Sabine Gruettner-Merten
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Patent number: 5865854Abstract: The invention provides compositions and methods containing novel bis-(2,4-diaminophenoxy)benzene coupling compounds, and cosmetically acceptable salts thereof, for use with conventional primary intermediate dye compounds and oxidizing agents for the oxidative coloring of human hair. The compositions of the invention may also contain other components typically used in oxidative hair dye preparations to impart intense and lasting coloration to hair.Type: GrantFiled: November 21, 1997Date of Patent: February 2, 1999Assignee: Bristol-Myers Squibb CompanyInventors: Mu-Iii Lim, Yuh-Guo Pan, Linas R. Stasaitis
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Patent number: 5847218Abstract: The invention provides a novel sulfonium salt having a substituted or unsubstituted arylsulfonate anion. The novel sulfonium salt minimizes the influence of deactivation by basic compounds not only at a resist surface, but also at a resist-substrate interface, assists a resist to be configured to a definite pattern profile. When the sulfonium salt has an acid labile group, it is effective for increasing the dissolution contrast between exposed and unexposed areas. The sulfonium salt is useful in a chemically amplified positive resist composition which lends itself to fine patterning and features high resolution.Type: GrantFiled: March 4, 1997Date of Patent: December 8, 1998Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Youichi Ohsawa, Satoshi Watanabe, Junji Shimada, Katsuya Takemura, Shigehiro Nagura, Toshinobu Ishihara
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Patent number: 5840984Abstract: Odor formation during storage of (hydrocarbylthio)aromatic amines due to formation and release of odoriferous sulfur-containing species such as dihydrocarbyldisulfides, is suppressed. To accomplish this, a small amount of N,N-dihydrocarbylhydroxylamine odor-inhibitor (e.g., N,N-diethylhydroxylamine) is blended with the (hydrocarbylthio)aromatic amine. This enables products such as a mixture of 3,5-di(methylthio)-2,4-diaminotoluene and 3,5-di(methylthio)-2,6-diaminotoluene) to be stored for long periods of time with significantly reduced formation and release of odoriferous sulfur-containing species.Type: GrantFiled: June 23, 1997Date of Patent: November 24, 1998Assignee: Albemarle CorporationInventors: Gregory H. Lambeth, Paul L. Wiggins, William R. Brown
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Patent number: 5831127Abstract: A novel bisaminothiophenol compound represented by the following general formula: ##STR1## where Rf is a perfluoroalkylidene group having 1 to 10 carbon atoms, is used as a cross-linking agent for fluorine-containing elastomers having CN groups as cross-linkable groups.Type: GrantFiled: October 23, 1995Date of Patent: November 3, 1998Assignee: Nippon Mektron LimitedInventors: Satoru Saito, Haruyoshi Tatsu, Lev Solomonovich German, deceased, Valerii Romanovich Polishchuk, deceased
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Patent number: 5776951Abstract: The present invention is concerned with diaryl compounds of formula (l) and their use in medical therapy, particularly in the prophylaxis or treatment of a clinical condition for which an ACAT inhibitor is indicated, such as hyperlipidaema or atherosclerosis. The invention also relates to pharmaceutical compositions and processes for the preparation of compounds according to the invention.Type: GrantFiled: April 11, 1996Date of Patent: July 7, 1998Assignee: Glaxo Wellcome Inc.Inventors: Richard James Arrowsmith, John Gordon Dann, Karl Witold Franzmann, Simon Teanby Hodgson, Peter John Wates
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Patent number: 5773469Abstract: The invention relates to diaryl antimicrobial compounds of the general formula: ##STR1## where G, E L, J, q, m, X, Ar, W, p, n and A are as described herein, pharmaceutical compositions containing the compounds, methods for their production and their use in treating bacterial infections.Type: GrantFiled: June 18, 1996Date of Patent: June 30, 1998Assignee: Ortho Pharmaceutical CorporationInventors: Ramesh M. Kanojia, James P. Demers, Dennis J. Hlasta, Sigmond G. Johnson, Dieter H. Klaubert
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Patent number: 5750789Abstract: An unsaturated imide compound represented by formula (1): ##STR1## wherein Q is an alicyclic structure-containing hydrocarbon group having 4-20 carbon atoms; each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.i and R.sub.j represents a hydrogen atom, a halogen atom, a hydrocarbon group having 1-6 carbon atoms or a halogen-containing hydrocarbon group having 1-6 carbon atoms; each of a, b, c, d, e and f represents an integer of 0 to 4 satisfying a+b.ltoreq.4, c+d.ltoreq.4 and e+f.ltoreq.4 and D represents a divalent organic group having 2-24 carbon atoms and an ethylenically unsaturated double bond, a process for producing the unsaturated imide compound of formula (1) and intermediates for producing the unsaturated imide compound of formula (1). The unsaturated imide compound of formula (1) is well soluble in organic solvents and can give cured products excellent in heat resistance, low water absorption and flexibility.Type: GrantFiled: September 29, 1995Date of Patent: May 12, 1998Assignee: Sumitomo Chemical Company LimitedInventors: Yasuhiro Hirano, Yasuhiro Endo, Kazuo Takebe, Mitsuhiro Shibata, Shuichi Kanagawa, Yutaka Shiomi, Masatsugu Akiba, Shinichiro Kitayama
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Patent number: 5696167Abstract: 4-Mercaptobenzoylguanidines of the formula I ##STR1## in which A, R.sub.1, R.sub.2 and R.sub.3 have the meanings given, and the physiologically unobjectionable salts thereof exhibit antiarrhythmic properties and are active as inhibitors of the cellular Na.sup.+ /H.sup.+ antiporter.Type: GrantFiled: January 30, 1996Date of Patent: December 9, 1997Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Rolf Gericke, Manfred Baumgarth, Klaus-Otto Minck, Norbert Beier
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Patent number: 5689004Abstract: Controlled molecular weight imide oligomers and co-oligomers containing pendent phenylethynyl groups (PEPIs) and endcapped with nonreactive or phenylethynyl groups have been prepared by the cyclodehydration of the precursor amide acid oligomers or co-oligomers containing pendent phenylethynyl groups and endcapped with nonreactive or phenylethynyl groups. The amine terminated amide acid oligomers or co-oligomers are prepared from the reaction of dianhydride(s) with an excess of diamine(s) and diamine containing pendent phenylethynyl groups and subsequently endcapped with a phenylethynyl phthalic anhydride or monofunctional anhydride. The anhydride terminated amide acid oligomers and co-oligomers are prepared from the reaction of diamine(s) and diamine containing pendent phenylethynyl group(s) with an excess of dianhydride(s) and subsequently endcapped with a phenylethynyl amine or monofunctional amine.Type: GrantFiled: November 12, 1996Date of Patent: November 18, 1997Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: John W. Connell, Joseph G. Smith, Jr., Paul M. Hergenrother
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Patent number: 5675039Abstract: Disclosed are bis-meta-benzotrifluoride compounds having the general formula ##STR1## where each A is independently selected from the group consisting of NO.sub.2, NH.sub.2, and NH.sub.3.sup.+ Z.sup.-, Z.sup.- is an anion and B is selected from the group consisting of O, CO, S, SO, and SO.sub.2. The diamine compounds are useful as monomers in making polyimides, polyamide-imides, and polyamides.Type: GrantFiled: April 15, 1996Date of Patent: October 7, 1997Inventors: Jeffrey S. Stults, Henry C. Lin, Robert A. Buchanan
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Patent number: 5637119Abstract: Substituted aromatic polyalkyl ethers having the formula: ##STR1## wherein R.sub.1 is a polyalkyl group having an average molecular weight of about 450 to about 5,000;A is nitro, amino, cyano, aminomethyl, N-alkylamino or N-alkylaminomethyl wherein the alkyl group contains from about 1 to about 6 carbon atoms, or N,N-dialkylamino or N,N-dialkylaminomethyl wherein each alkyl group independently contains from about 1 to about 6 carbon atomsx is an integer from about 0 to about 1; and y is an integer from about 0 to about 10 with the proviso that one of x and y must be 0 and the other must be greater than 0.The substituted aromatic polyalkyl ethers of the present invention are useful as fuel additives for the prevention and control of engine deposits.Type: GrantFiled: December 29, 1995Date of Patent: June 10, 1997Assignee: Chevron Chemical CompanyInventor: Richard E. Cherpeck
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Patent number: 5625089Abstract: Anilines of the formula ##STR1## where rings A and B may each be benzofused,X is a bridge member,R.sup.1 and R.sup.2 are each hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, hydroxysulfonyl, carboxyl, C.sub.1 -C.sub.4 -alkoxycarbonyl or C.sub.1 -C.sub.4 -alkylsulfonyl,R.sup.3 is hydrogen, amino, C.sub.1 -C.sub.4 -alkanoylamino or nitro, andY is vinyl or a radical of the formula C.sub.2 H.sub.4 --Q, where Q is a group detachable under alkaline reaction conditions.Type: GrantFiled: February 28, 1996Date of Patent: April 29, 1997Assignee: BASF AktiengesellschaftInventor: Manfred Patsch
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Patent number: 5599993Abstract: Four phenylethynyl amine compounds--3 and 4-aminophenoxy-4'-phenylethynylbenzophenone, and 3 and 4-amino-4'-phenylethynylbenzophenone--were readily prepared and were used to endcap imide oligomers. Phenylethynyl-terminated amide acid oligomers and phenylethynyl-terminated imide oligomers with various molecular weights and compositions were prepared and characterized. These oligomers were cured at 300.degree. C. to 400.degree. C. to provide crosslinked polyimides with excellent solvent resistance, high strength and modulus and good high temperature properties. Adhesive panels, composites, films and moldings from these phenylethynyl terminated imide oligomers gave excellent mechanical performance.Type: GrantFiled: January 20, 1995Date of Patent: February 4, 1997Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventors: Paul M. Hergenrother, Robert G. Bryant, Brian J. Jensen, Stephen J. Havens
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Patent number: 5569784Abstract: A novel sulfonium salt having at least one substituted aromatic group having acid labile groups and at least one nitrogenous aromatic group is provided. A chemically amplified, positive resist composition comprising the sulfonium salt as well as an alkali soluble resin and a dissolution inhibitor in an organic solvent has solved the PED problem.Type: GrantFiled: January 27, 1995Date of Patent: October 29, 1996Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Satoshi Watanabe, Junji Shimada, Youichi Ohsawa, Katsuya Takemura, Toshinobu Ishihara, Kazumasa Maruyama
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Patent number: 5545444Abstract: The present invention is to provide new diamino compounds useful for raw materials for production of liquid crystal aligning films that have excellent aligning properties and uniform and high pretilt angles over the whole display surface of wide substrates without afterimage phenomenons.Type: GrantFiled: June 6, 1995Date of Patent: August 13, 1996Assignee: Chisso CorporationInventors: Minoru Nakayama, Toshiya Sawai, Shizuo Murata
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Patent number: 5440009Abstract: A method for recovering cyclic oligomers from a poly(arylene sulfide) polymer or poly(arylene sulfide) polymerization reaction mixture is provided in which the cyclic oligomers are maintained in a solution comprising a suitable solvent and the cyclic oligomers; then the solution is contacted with water to cause the formation of a suspension; then the suspension is acidified to cause the flocculation of cyclic oligomers which can then be more easily recovered.Type: GrantFiled: December 30, 1993Date of Patent: August 8, 1995Assignee: Phillips Petroleum CompanyInventors: Carlton E. Ash, William A. St. Laurent
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Patent number: 5434308Abstract: A method of dehydrogenating 3-amino-2-cyclohexene-1-one with a supported palladium or palladium-platinum catalyst in a solvent in the presence of base to produce 3-aminophenol and its use directly without purification to produce 3,4'-oxydianiline.Type: GrantFiled: January 18, 1994Date of Patent: July 18, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: Stephen E. Jacobson
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Patent number: 5430195Abstract: The present invention is to provide new diamino compounds useful for raw materials for production of liquid crystal aligning films that have excellent aligning properties and uniform and high pretilt angles over the whole display surface of wide substrates without afterimage phenomenons.Type: GrantFiled: October 25, 1994Date of Patent: July 4, 1995Assignee: Chisso CorporationInventors: Minoru Nakayama, Toshiya Sawai, Shizuo Murata
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Patent number: 5426232Abstract: Compounds of the formula I ##STR1## in which R.sub.1 and R.sub.2 independently of one another are C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.8 cycloalkyl which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, or phenyl or benzyl which is unsubstituted or substituted by F, Cl, Br, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy or di(C.sub.1 -C.sub.6 alkyl)amino.The compounds are suitable as .pi.-acceptors and electrical semiconductors, and they can be used for antistatic finishing of objects.Type: GrantFiled: November 4, 1993Date of Patent: June 20, 1995Assignee: Ciba-Geigy CorporationInventor: John Zambounis
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Patent number: 5414126Abstract: The present invention is to provide new diamino compounds useful for raw materials for production of liquid crystal aligning films that have excellent aligning properties and uniform and high pretilt angles over the whole display surface of wide substrates without afterimage phenomenons.Type: GrantFiled: October 27, 1993Date of Patent: May 9, 1995Assignee: Chisso CorporationInventors: Minoru Nakayama, Toshiya Sawai, Shizuo Murata
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Patent number: 5411973Abstract: Compounds of formula I ##STR1## wherein X, A, B, R.sup.1 and R.sup.2 have the meanings given in the specification, and pharmaceutically acceptable salts and pharmaceutically acceptable in vivo hydrolysable ester thereof, processes for preparing the compounds and pharmaceutical compositions comprising them. The compounds are useful as potassium channel openers and as therapeutic agents in the treatment of urinary incontinence.Type: GrantFiled: May 18, 1993Date of Patent: May 2, 1995Assignee: Zeneca LimitedInventors: Keith Russell, James R. Empfield, Cyrus J. Ohnmacht, Keith H. Gibson
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Patent number: 5410084Abstract: A polyimide comprising a requisite structural unit having one or more recurring structural units of the formula: ##STR1## such as the structural units of the formula ##STR2## Further, the present invention relates to a novel aromatic diamine which has a perfluoro radical and can be used as a raw material monomer of the polyimide, and a process for preparing the same.The polyimide can have an extremely low dielectric constant and is colorless, transparent and excellent in processability and heat resistance.Type: GrantFiled: June 2, 1994Date of Patent: April 25, 1995Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Mitsunori Matsuo, Tsutomu Ishida, Keizaburo Yamaguchi, Akihiro Yamaguchi
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Patent number: 5399673Abstract: Compounds containing at least one alkenyl group, at least one maleimide group and at least one rodlike mesogenic moiety are prepared by reacting one or more aminophenols containing one or more rodlike mesogenic moieties with a stoichiometric quantity of a maleic anhydride per amine group of said aminophenol and then alkenylating the resulting phenolic functional maleimide.Type: GrantFiled: February 9, 1993Date of Patent: March 21, 1995Assignee: The Dow Chemical CompanyInventor: Robert E. Hefner, Jr.
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Patent number: 5387725Abstract: Compounds having acidic protons and a molecular structure which can delocalize the electron density of the conjugate base (target compounds) are chlorinated by contacting such compounds with a perchloroalkane and aqueous base in the presence of a phase transfer catalyst which is an tetraalkylammonium hydroxide. Chlorinated products, preferably gem-dichloro compounds, are produced. The gem-dichloro compounds are useful for alkylation of aromatic compounds. For instance fluorene is chlorinated to form 9,9-dichlorofluorene which is reacted with such compounds as phenol or aniline to form such compounds as 9,9-bis(hydroxyphenyl)fluorene, 9,9-bis(aminophenyl)fluorene, or 9-aminophenyl-9-chlorofluorene.Type: GrantFiled: July 12, 1993Date of Patent: February 7, 1995Assignee: The Dow Chemical CompanyInventors: Marlin E. Walters, W. Frank Richey, Katherine S. Clement, Steven L. Brewster, Emmett L. Tasset, Paul M. Puckett, V. Rao Durvasula, Hong A. Nguyen
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Patent number: 5382686Abstract: Nitrodiphenyl(thio) ethers in which the nitro group is in the ortho- or para-position with respect to the ether oxygen or ether sulphur can be prepared from halonitrobenzones in which the nitro group is in the ortho- or para-position with respect to the halogen and, alkali metal (thio)phenolates in liquid ammonia, the reaction being carried out under pressure and at a temperature from -30.degree. C. to +140.degree. C. and the ammonia being separated off after the reaction is completed.Type: GrantFiled: June 2, 1993Date of Patent: January 17, 1995Assignee: Bayer AktiengesellschaftInventors: Ferdinand Hagedorn, Helmut Fiege
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Patent number: 5382693Abstract: bis(Aminophenoxy)-alpha-substituted stilbenes are prepared by reacting a dihydroxy-alpha-substituted stilbene with a halonitrobenzene in the presence of a basic acting substance such as potassium carbonate and hydrogenating the resulting bis(nitrophenoxy)-alpha-substituted stilbene to convert the nitro groups to amino groups. These compounds are useful as curing agents for epoxy resins.Type: GrantFiled: October 27, 1993Date of Patent: January 17, 1995Assignee: The Dow Chemical CompanyInventors: V. Rao Durvasula, Robert E. Hefner, Jr., Jimmy D. Earls
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Patent number: 5344986Abstract: Compounds of the formula: ##STR1## wherein: n=0 or 1;R.sub.1 and R.sub.2 are C.sub.1 to C.sub.3 alkyl groups, or R.sub.2 may be H when n=0; and Y is selected from the group: ##STR2## wherein: m=1-6Z=SO.sub.2, S, C=O, CH.sub.2 or C(CH.sub.3).sub.2 ; and a process for their preparation are described.Type: GrantFiled: March 7, 1991Date of Patent: September 6, 1994Assignee: Bromine Compounds, Ltd.Inventors: Jakob Oren, Joshua Hermolin, David Feldman, Michael Zviely, Dov Zamir, Hugo Keselman
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Patent number: 5329047Abstract: A thermosetting resin composition useful for a copper-clad laminate is provided, which comprise (A) an aromatic diamine compound represented by the following formula: ##STR1## wherein Ar is a divalent aromatic residue, and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each is an allyl group or a hydrogen atom but at least one of them is an allyl group, and (B) a polymaleimide compound having two or more maleimide groups in a molecule thereof.Type: GrantFiled: December 13, 1991Date of Patent: July 12, 1994Assignee: Sumitomo Chemical Co., Ltd.Inventors: Shigeki Naitoh, Yasuhisa Saito, Yasuhiro Hirano, Kazuo Takebe, Kunimasa Kamio, Youichi Ueda
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Patent number: 5319069Abstract: An electrophotographic photoconductor comprising an electroconductive support and a photoconductive layer formed thereon comprising as an effective component at least one polyether compound represented by formula (I): ##STR1## wherein Ar represents a phenylene group or a biphenylene group; R.sup.1 and R.sup.2 each represent an alkyl group which may have a substituent, or an aryl group which may have a substituent; and n is an integer of 1 to 4. Furthermore, charge transporting material comprising the above polyether compound, polyether compounds having formula (II) for use in the electrophotographic photoconductor and a method of preparing the same are disclosed, ##STR2## wherein m is an integer of 1 or 2.Type: GrantFiled: June 2, 1993Date of Patent: June 7, 1994Assignee: Ricoh Company, Ltd.Inventors: Masaomi Sasaki, Tamotsu Aruga, Tomoyuki Shimada
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Patent number: 5319143Abstract: There are disclosed certain bis(aminoethanethiols) and the salts thereof which find utility as intermediates in the preparation of certain dye-providing compounds useful in photographic imaging systems.Type: GrantFiled: July 31, 1992Date of Patent: June 7, 1994Assignee: Polaroid CorporationInventors: David Messersmith, David P. Waller
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Patent number: 5304682Abstract: Disclosed is a method of making 1,1'-sulfonylbis[3-nitro-5-(trifluoromethyl) benzene] by reacting dibenzotrifluoride sulfide with at least four equivalents of fuming nitric acid and at least four equivalents of fuming sulfuric acid at a temperature below 20.degree. C., until the sulfide link is oxidized to a sulfone link, then raising the temperature to above 20.degree. C. until the reaction is complete. Also disclosed is the preparation of 1,1'-sulfonylbis[3-nitro-(5-trifluoromethyl) benzenamine] by reducing the benzene compound.Type: GrantFiled: August 17, 1989Date of Patent: April 19, 1994Assignee: Occidental Chemical CorporationInventors: Jeffrey S. Stults, Henry C. Lin
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Patent number: 5280128Abstract: The present invention relates to a process for the preparation of benzothioxanthene dyestuffs and cyclisation of 3-(2'-aminophenylthio)-benzanathrones wherein the diazotisation and cyclisation are carried out simultaneously in polar, aprotic solvent in the presence of water.Type: GrantFiled: December 12, 1991Date of Patent: January 18, 1994Assignee: Cassella AktiengesellschaftInventors: Wolfgang Bauer, Eberhard Grimm, Uwe Nickel, Manfred Schrod, Herbert Wille