Carbon Double Bonded Directly At The 1- Or 4- Position Patents (Class 552/304)
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Patent number: 8884038Abstract: The invention provides a method for synthesizing 7-Acetyleno quinone methide compounds that is safe and inexpensive. The method avoids the need for extremely cold reaction temperatures and unlike the prior art does not require any highly explosive materials. The method comprises the steps of: a) performing a condensation reaction between 3,5-di-tert-butyl-4-hydroxybenzaldehyde and a secondary amine thereby forming a secondary amine quinone methide intermediate; b) removing water from the secondary amine quinone methide intermediate by azeotropic distillation; c) adding the dehydrated secondary amine quinone methide intermediate to an organic medium containing a metal acetylide to form a Mannich base intermediate; and d) adding a release agent to the Mannich base intermediate to yield a 7-Acetyleno quinone methide.Type: GrantFiled: June 13, 2011Date of Patent: November 11, 2014Assignee: Nalco CompanyInventor: Jonathan Masere
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Patent number: 7083883Abstract: A polymer has stilbenquinone structures as a repetitive unit and an electrophotographic photoreceptor containing the polymer. More particularly, the polymer has an improved electro-transporting capacity in that precipitation does not occur even when the polymer is used as an electron transporter for an electrophotographic photoreceptor in a high concentration.Type: GrantFiled: October 20, 2003Date of Patent: August 1, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Beom-Jun Kim, Saburo Yokota, Kyung-yol Yon, Hwan-koo Lee
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Patent number: 6891072Abstract: The present invention provides a method for preparing dimer of a monohydroxy aromatic compound. In the method of the present invention, oxidative coupling reaction of a monohydroxy aromatic compound represented by formula [I]: Ar—OH??[I] wherein Ar represents an optionally substituted aromatic group is carried out in a nitrogen containing polar solvent in the presence of a copper salt. By the method of the instant invention, dimer of the monohydroxy aromatic compound can be obtained in high yield.Type: GrantFiled: April 18, 2002Date of Patent: May 10, 2005Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo KenkyujoInventors: Ryuzo Ueno, Masaya Kitayama, Kenji Minami, Hiroyuki Wakamori, Hikari Hirai
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Publication number: 20040143122Abstract: The invention provides Zn-chelating compounds that are molecularly engineered to bind to a specific target sequence in a protein of interest. The Zn2+0 ion is far less toxic and promiscuous than nickel and therefore provides an attractive alternative to Ni-based labeling systems. Invention Zn-chelating compounds also do not require oxidizable thiols and therefore can be used in non-reducing environments such as the surface of living cells. In addition, the target sequence is genetically encodable and requires incorporation of only a few amino acids, unlike fusions to fluorescent proteins such as GFP.Type: ApplicationFiled: January 16, 2003Publication date: July 22, 2004Inventors: Roger Y. Tsien, Christina Hauser
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Publication number: 20040034247Abstract: A synergistic composition and method of use are disclosed. The compositions comprise a quinone methide derivative, a hydroxylamine compound and a catechol compound. These compositions demonstrate synergism at inhibiting the polymerization of a vinyl aromatic monomer. Preferably the quinone methide derivative is 2,6-di-tert-butyl-4-benzylidene-cyclo-2,5-dienone, the hydroxylamine compound is N,N-bis(hydroxypropyl)hydroxylamine, and the catechol is 4-tert-butyl catechol.Type: ApplicationFiled: August 16, 2002Publication date: February 19, 2004Inventor: Sherif Eldin
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Patent number: 6280893Abstract: Electrophotographic photoreceptors for use in photocopiers and laser printers, among other things, possessing high electron mobility and superior photosensitivity properties. The photoreceptors of the invention utilize a photosensitive layer with a carrier transport material containing a compound which exhibits high molecular vibration. The compounds of the invention are electron transfer agents which can be dispersed in a photosensitive layer at a high concentration and can be molecularly designed to have a desired magnitude of molecular vibration.Type: GrantFiled: March 3, 1999Date of Patent: August 28, 2001Assignees: Shindengen Electric Manufacturing Co., Ltd., Yamanashi Electronics Co., Ltd.Inventors: Mitsuyo Takano, Hiroki Suzuki
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Patent number: 5863688Abstract: The present invention provides a naphthoquinone derivative represented by the general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are as defined in the specification. An electrophotosensitive material containing this naphthoquinone derivative as an electron transferring material has high sensitivity.Type: GrantFiled: September 6, 1996Date of Patent: January 26, 1999Assignee: Mita Industrial Co., LtdInventors: Yukimasa Watanabe, Sakae Saito, Hirofumi Kawaguchi, Akiyoshi Urano, Fumio Sugai, Atsushi Fujii, Yasufumi Mizuta, Toshiyuki Fukami, Ichiro Yamazato, Yuji Tanaka, Eiichi Miyamoto, Hideo Nakamori, Mitsuo Ihara
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Patent number: 5466839Abstract: p-Dihydroxylated aromatic compounds are prepared via the oxidation of p-fuchsones, the latter advantageously being synthesized by reacting a phenolic compound having at least one hydrogen atom in the para-position to the hydroxyl function with a non-enolizable ketonic compound, in the presence of a catalytically effective amount of an acid catalyst and, optionally, a cocatalytically effective amount of an ionizable sulfur-containing compound.Type: GrantFiled: January 10, 1994Date of Patent: November 14, 1995Assignee: Rhone-Poulenc ChimieInventors: Michel Costantini, Daniel Manaut, Daniel Michelet
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Patent number: 5374749Abstract: Disclosed are a dye having a structural formula (I): ##STR1## where n is form 1 to 15, and a solution containing the dye. The dye is highly stable and has a characteristic color hue, and it is insoluble in water. The dye is expected to be useful in various fields of coating materials, dyes, cosmetics and food additives.Type: GrantFiled: March 2, 1993Date of Patent: December 20, 1994Assignee: Kabushikikaisha Kibun ShokuhinInventors: Kazuhito Kusaka, Sachio Wakayama, Yoshihiro Sekino, Kazuyoshi Kawazu, Akio Kobayashi
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Patent number: 5372996Abstract: A method of treatment of androgen-related diseases such as prostate cancer in susceptible male animals, including humans, comprises administering novel antiandrogens and/or novel sex steroid biosynthesis inhibitors as part of a combination therapy. Sex steroid biosynthesis inhibitors, especially those capable of inhibiting conversion of dehydroepiandrosterone (DHEA) or 4-androstenedione (.DELTA..sup.4 -dione) to natural sex steroida (and testosterone into dihydrotestosterone) in peripheral tissues, are used in combination with antiandrogens usually after blockade of testicular hormonal secretions. Antiestrogens can also be part of the combination therapy. Pharmaceutical compositions and two, three, four and five component kits are useful for such combination treatment.Type: GrantFiled: October 19, 1992Date of Patent: December 13, 1994Assignee: Endorecherche, Inc.Inventor: Fernand Labrie
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Patent number: 5328819Abstract: An azomethine dye represented by the following general formula (I) ##STR1## wherein A represents a dye residue formed by removing one hydrogen atom from an indophenol or indoaniline dye; L represents a divalent bonding group; and Z represents a non-metallic atomic group required for forming a three-membered to eight-membered heterocyclic ring together with N, provided that a carbonyl group is not directly bonded to N in the heterocyclic ring. Also disclosed is a silver halide photographic material having an emulsion layer with a covering power of at least 60, and wherein the silver halide photographic material contains at least one member of the dyes of general formula (I) in such an amount that an increase in transmission density in unexposed areas caused by the incorporation of the dye therein after development is not more than 0.06.Type: GrantFiled: August 12, 1992Date of Patent: July 12, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Shigeru Ohno, Yukio Miyaki, Shigeru Yamazaki
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Patent number: 5283347Abstract: Disclosed is a dye having a structural formula (I): ##STR1## where n is from 1 to 15, and a solution containing the dye. The dye is highly stable and has a characteristic color hue, and it is insoluble in water. The dye is expected to be useful in various fields of coating materials, dyes cosmetics and food additives.Type: GrantFiled: September 4, 1991Date of Patent: February 1, 1994Assignee: Kabushikikaisha KibunInventors: Kazuhito Kusaka, Sachio Wakayama, Yoshihiro Sekino, Kazuyoshi Kawazu, Akio Kobayashi
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Patent number: 5176976Abstract: An organic electronic material comprises a compound represented by the following formula (I). ##STR1## The compounds transport electrons and is excellent in durability when used in a photosensitive layer of an electrophotographic photosensitive member.Type: GrantFiled: April 5, 1991Date of Patent: January 5, 1993Assignee: Canon Kabushiki KaishaInventors: Toshihiro Kikuchi, Akio Maruyama
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Patent number: 5130356Abstract: A novel, optically transparent, isotropic molding for optical purposes which is free of orientation birefringence consists of a mixture of polyphenylene ethers, vinylaromatic polymers and additives. The novel molding contains traces of novel diphenoquinone and/or diphenohydroquinone derivatives as additives and may also contain novel ammonium salts of sulfuric acid half esters of diphenohydroquinones as further additives. The novel molding has a yellowness index (YI) of from 40 to 90. It can be produced in a simple manner by injection molding processes. The novel molding in the form of a circular disk having a central hole is very useful as a dimensionally stable substrate of audio compact disks (CD), audiovisual compact disks (CDV), laser-optical computer disks and magneto-optical computer disks, and data media of this type which contain these novel dimensionally stable substrates have particularly advantageous performance characteristics.Type: GrantFiled: February 1, 1990Date of Patent: July 14, 1992Assignee: BASF AktiengesellschaftInventors: Karl-Heinz Feuerherd, Carola Hedtmann-Rein, Ludger Leber
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Patent number: 5095130Abstract: A compound of the formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 is methyl or ethyl, the A,B,C and D rings optionally containing at least one double bond and optionally substituted with at least one member of the group consisting of optionally protected --OH, .dbd.O, alkyl and alkoxy of 1 to 4 carbon atoms, halogen and alkenyl and alkynyl of 2 to 4 carbon atoms, R is selected from the group consisting of halogen, --OH, alkylthio and alkoxy of 1 to 6 carbon atoms, aralkoxy, arylthio and aralkylthio of 7 to 15 carbon atoms and ##STR2## R.sub.3 and R.sub.4 are individually hydrogen, or alkyl of 1 to 6 carbon atoms or aralkyl of 7 to 15 carbon atoms or taken together with the nitrogen form a heterocycle optionally containing another nitrogen or oxygen atom, excepting the product in which R is methoxy, R.sub.1 and R.sub.2 each represent methyl, A ring carries a 3.beta.-acetoxy function and B ring contains a double bond in 5(6) useful as intermediates for the preparation of 20-keto-pregnanes.Type: GrantFiled: March 5, 1990Date of Patent: March 10, 1992Assignee: Roussel UclafInventors: Michel Vivat, Jean Buendia
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Patent number: 5013857Abstract: Process for the preparation of sulpho-free triphenylmethane dyestuffs of the formula ##STR1## in which R.sup.1 -R.sup.3 denote hydrogen, C.sub.1 -C.sub.6 -alkyl, preferably methyl, or halogen, preferably chlorine,Y denotes hydrogen or NX.sup.5 X.sup.6,X.sup.1 -X.sup.6 denote hydrogen, C.sub.1 -C.sub.6 -alkyl, preferably methyl, ethyl, benzyl or phenyl andZ.sup.Type: GrantFiled: December 11, 1989Date of Patent: May 7, 1991Assignee: Bayer AktiengesellschaftInventors: Horst Berneth, Roderich Raue
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Patent number: 5011956Abstract: Colloidal suspensions of charged polymer particles containing charged metal complexes are prepared from charged polymer colloids by ion exchange. The charged polymer latex particles containing the metal complex are characterized as ranging from about 0.01 to 1.5 micrometers in diameter and containing from about 0.01 to 3.0 millimoles of metal complex per gram of dry polymer and are useful for catalysis of chemical reactions in aqueous dispersions.Type: GrantFiled: July 6, 1989Date of Patent: April 30, 1991Inventors: Warren T. Ford, Rama S. Chandran, Mahmoud Hassanein, Hayrettin Turk
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Patent number: 4915875Abstract: Paramethyl-substituted hindered phenols are selectively oxidized by contacting with an oxidizing agent at elevated temperatures in the presence of a heterogeneous oxidative coupling catalyst. In the absence of an optional nucleophile the products comprise carbon-carbon oxidative coupling products. In the presence of a nucleophile, addition products result that may be further oxidized by continued exposure to the oxidizing agent to yield substituted p-hydroxybenzaldehydes.Type: GrantFiled: November 4, 1986Date of Patent: April 10, 1990Assignee: The Dow Chemical CompanyInventors: Timothy R. Diephouse, Robert M. Strom
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Patent number: 4909966Abstract: New chemical compounds are derivatives of certain substituted 1,4-napthoquinones in which the keto oxygens at the 4-positions have been replaced by certain cyanoalkoxycarbonylmethylene groups. The new compounds have the structure ##STR1## wherein: J is alkyl having 1 to 6 carbon atoms, andR is normal alkyl having 1 to 6 carbon atoms.The compounds are useful as electron-transport agents in electrophotographic elements.Type: GrantFiled: December 21, 1988Date of Patent: March 20, 1990Assignee: Eastman Kodak CompanyInventors: Teh-Ming Kung, William B. Vreeland, Ralph H. Young