Each Of The Benzene Rings Is Part Of A Bicyclo Ring System Patents (Class 534/833)
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Publication number: 20140246632Abstract: The present invention provides a polarizing film having a high dichroic ratio. The polarizing film contains a disazo compound represented by the following general formula (1). In the general formula (1), Q1 represents a phenyl group having at least one —SO3M group; Q2 represents a naphthylene group having at least one —SO3M group; X represents an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a thioalkyl group having 1 to 4 carbon atoms, a halogeno group, or a polar group; subscript k denotes the number of substitutions of X and represents an integer of 0 to 5; and M represents a counter ion, where when k is an integer of 2 or more, Xs are the same or different.Type: ApplicationFiled: January 8, 2013Publication date: September 4, 2014Applicant: NITTO DENKO CORPORATIONInventors: Sadahiro Nakanishi, Miyuki Kurogi
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Publication number: 20080196180Abstract: The present invention provides 6-azo-5,5?-dihydroxy-7,7?-disulfo-2,2?-dinaphthylamine derivatives, their use as dyes, dyed paper and formulations comprising them.Type: ApplicationFiled: January 11, 2006Publication date: August 21, 2008Inventor: Holger Lautenbach
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Patent number: 6417178Abstract: Amyloid binding compounds which are derivatives of Chrysamine G, pharmaceutical compositions containing, and methods using such compounds to identify Alzheimer's brain in vivo and to diagnose other pathological conditions characterized by amyloidosis, such as Down's Syndrome are described. Pharmaceutical compositions containing Chrysamine G and derivatives thereof and methods using such compositions to prevent cell degeneration and amyloid-induced toxicity in amyloidosis associated conditions are also described. Methods using Chrysamine G derivatives to stain or detect amyloid deposits in biopsy or post-mortem tissue are also described. Methods using Chrysamine G derivatives to quantify amyloid deposits in homogenates of biopsy and post-mortem tissue are also described.Type: GrantFiled: November 6, 1997Date of Patent: July 9, 2002Assignee: University of PittsburghInventors: William E. Klunk, Jay W. Pettegrew, Chester A. Mathis, Jr.
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Patent number: 5883234Abstract: The novel process for dyeing cellulosic materials with disazo dyestuffs of the formula ##STR1## in which the substituents NHR.sup.1 and NHR.sup.2 are in each case in the 6- and/or 7-position and R.sup.1, R.sup.2, m, n, p and q have the meaning given in the description, produces blue dyeings with very good fastness properties.Type: GrantFiled: September 18, 1997Date of Patent: March 16, 1999Assignee: Bayer AktiengesellschaftInventors: Winfried Mennicke, Klaus Kunde
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Patent number: 5647897Abstract: An ink composition for ink jet recording is provided which can satisfy property requirements of quality of print, drying property of print, clogging resistance, water resistance, storage stability, and nonattacking on members constituting an ink passage, such as a printing head. The ink composition for ink jet recording comprises a dye represented by the following formula (I), glycerin, pyrrolidone, a monohydric lower alcohol, a tri(hydroxyalkyl)amine, and water: ##STR1## wherein R.sup.1 represents phenyl or naphthyl substituted by a group selected from hydroxyl, --NH.sub.2, --SO.sub.3 M and --COOM, R.sup.2 represents carboxyalkyl, alkoxyalkyl, phenyl, or alkanoyl, R.sup.3, R.sup.4, and R.sup.5 represent hydrogen or --SO.sub.3 M.Type: GrantFiled: October 31, 1995Date of Patent: July 15, 1997Assignee: Seiko Epson CorporationInventors: Yasuhiro Ouki, Miharu Kanaya, Hiroko Hayashi, Kiyohiko Takemoto, Masaaki Itano
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Patent number: 5354512Abstract: A dye-containing polarizing film comprising a polarizing film material and a metal-containing dye represented by the following formula (I): ##STR1## wherein Me is a transition metal selected from copper, nickel, zinc and iron;Z is hydrogen, lower alkyl, lower alkoxy, sulfo or amino which is unsubstituted or substituted;Q is a 1-naphthol or 2-naphthol residue which is unsubstituted or substituted and has no or an additional phenylazo or naphthylazo group unsubstituted or substituted and in which a hydroxy group is adjacent to the azo group bonding to the benzene ring having Z and is linked with the transition metal denoted by Me to form the complex;when Q is the naphthol residue having no additional azo group, then T is naphthyl which is unsubstituted or substituted; andwhen Q is the naphthol residue having an additional azo group, the T is a phenyl or naphthyl group which is unsubstituted or substituted, which film exhibits comparable high polarizing activity with film using iodine and superior durability.Type: GrantFiled: August 27, 1992Date of Patent: October 11, 1994Assignee: Sumitomo Chemical Company LimitedInventors: Kazuya Ogino, Setsuko Aoki, Koji Higashi
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Patent number: 5281263Abstract: According to the present invention there is provided a compound which, in the free acid form, is of the Formula (1): ##STR1## wherein A is an optionally substituted phenyl or naphthyl group;Z is H, CO.sub.2 H, SO.sub.3 H or SO.sub.2 NH.sub.2 ;T is H or SO.sub.3 H;R.sup.1 is H or optionally substituted alkyl;V is H, CO.sub.2 H, SO.sub.3 H, CH.sub.3 or Cl; provided that the compound of Formula (1) has at least as many CO.sub.2 H groups as SO.sub.3 H groups.The compound is useful as a colorant for inks used in ink jet printing.Type: GrantFiled: January 21, 1992Date of Patent: January 25, 1994Assignee: Imperial Chemical Industries PLCInventors: Peter Gregory, Prahalad M. Mistry
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Patent number: 5149366Abstract: A disazo compound of the formula (I) in the free acid form, ##STR1## and an ink jet recording ink composition containing the same are provided, and the composition is superior in stability during storage or use, heat resistance, image clearness, water resistance and light fastness, and has a desirable tint as a red color.Type: GrantFiled: October 9, 1991Date of Patent: September 22, 1992Assignees: Sumitomo Chemical Company, Limited, Taoka Chemical CompanyInventors: Hideo Kawashita, Mituhiro Ohta, Kazuya Ogino
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Patent number: 5145953Abstract: A biscyclobutarene monomer is prepared having two cyclobutarene moieties bridged by a divalent radical having at least one azo linkage. The monomers can be polymerized to form polymers exhibiting outstanding thermooxidative stability at high temperatures for prolonged time periods.Type: GrantFiled: February 2, 1988Date of Patent: September 8, 1992Assignee: The Dow Chemical CompanyInventors: Robert A. Kirchhoff, Alan K. Schrock
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Patent number: 4698421Abstract: A compound, or a salt thereof, represented by the following formula, ##STR1## wherein A is a substituted or unsubstituted phenylene or naphthylene group, B is ##STR2## in which R.sub.3 is a hydrogen atom or a lower alkyl, lower alkoxy, acylamino or ureido group, and R.sub.4 is a hydrogen atom or a lower alkyl or lower alkoxy group, R.sub.1 and R.sub.3 are independently a hydrogen atom or a substituted or unsubstituted lower alkyl group, X is a substituted or unsubstituted amino, lower alkoxy, substituted phenoxy or sulfo group, Y is --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Z, in which Z is a group capable of being split by the action of an alkali, and m is 2 or 3, which is useful for dyeing hydroxyl group- or amide group-containing fiber materials to give dyed products of a brown color having excellent fastness properties with good build-up property.Type: GrantFiled: June 7, 1985Date of Patent: October 6, 1987Assignee: Sumitomo Chemical Company, LimitedInventors: Yutaka Kayane, Hirokazu Sawamoto, Takashi Omura, Naoki Harada
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Patent number: 4663440Abstract: A brown reactive dye represented by a free acid of the formula, ##STR1## wherein R is a hydrogen atom or a C.sub.1 to C.sub.4 alkyl group, X is --SO.sub.2 CH.sub.2 CH.sub.2 Cl, --SO.sub.2 CH.dbd.CH.sub.2, --SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H or --SO.sub.2 CH.sub.2 CH.sub.2 OPO.sub.3 H.sub.2, rings A, B and C are each a benzene or naphthalene ring which may have other substituent, m is 0 to 3 and n is 0 to 1.This dye is suitable for dyeing cellulose fibers brown to afford dyeings superior in fastnesses, acid stability, build-up property and level dyeing property.Type: GrantFiled: May 26, 1981Date of Patent: May 5, 1987Assignee: Sumitomo Chemical Company, LimitedInventors: Takashi Omura, Masaki Sunami, Yasuo Tezuka