Patents Examined by Fiona Powers
-
Patent number: 6706863Abstract: The present invention provides Pigment Yellow 180 having an excellent transparency produced by using a fine slurry of 5-acetoacetylamino-benzimidazolone as a coupling component when Pigment Yellow 180 is produced by coupling reaction of 5-acetoacetylamino-benzimidazolone and diazo component obtained by diazotization of 1,2-bis(2-aminophenoxy)ethane.Type: GrantFiled: August 15, 2002Date of Patent: March 16, 2004Assignee: Clariant Finance (BVI) LimitedInventors: Isao Hashimoto, Noboru Tsuda, Hiroshi Ohsawa, Tomonori Okazaki, Manabu Shiga, Kohei Ohtsuki
-
Patent number: 6482974Abstract: Processes for the preparation of pyrrolidones (7 and 8) and pyrrolidines (9 and 10) from tri-O-acetyl-D-erythro-4-pentulosonic acid esters are described. The compounds are aza sugar analogs of D-ribofuranoside and are intermediates to drugs which regulate nucleoside and nucleic acid synthesis.Type: GrantFiled: September 4, 2001Date of Patent: November 19, 2002Assignee: Board of Trustees of Michigan State UniversityInventor: Rawle I. Hollingsworth
-
Patent number: 5672593Abstract: The present invention is directed to bistriazene compounds, pharmaceutical compositions containing effective anti-cancer amounts of these compounds, a method for treating cancer comprising administering to affected subjects an anti-cancer effective amount of a bistriazene compound, and the use of bistriazene compounds as crosslinking reagents applicable to the synthesis and manipulation of polymeric macromolecules.Type: GrantFiled: June 28, 1993Date of Patent: September 30, 1997Assignee: The United States of America as represented by the Department of Health and Human ServicesInventors: Christopher J. Michejda, Jeffrey J. Blumenstein
-
Patent number: 5668259Abstract: Compounds of the formula ##STR1## iron complexes thereof and mixtures of such iron complexes, wherein D is a monocyclic or bicyclic aromatic diazo component radical of the benzene series containing one --SO.sub.3 M group or is ##STR2## R.sub.1 is hydrogen, methyl or ethyl, and R.sub.4 is hydrogen, chloro or C.sub.1-2 alkyl,wherein R' is hydrogen, C.sub.1-4 alkyl, C.sub.2-4 hydroxyalkyl, methoxy(C.sub.2-4 alkyl) or ##STR3## R" is hydrogen, C.sub.1-4 alkyl, C.sub.2-4 hydroxyalkyl or methoxy(C.sub.2-4 alkyl), or--NR'R" is a saturated 5- or 6-membered ring,R.sub.5 is hydrogen, chloro or C.sub.1-2 alkyl, andX is hydrogen or hydroxy,wherein each R.sub.2 is independently hydrogen, chloro, hydroxy, C.sub.1-2 alkyl, C.sub.1-2 alkoxy or --SO.sub.2 NR.sub.o R.sub.o, andeach R.sub.3 is independently hydrogen, C.sub.1-2 alkyl, C.sub.1-2 alkoxy, --COOM, trifluoromethyl or --NR"'R"",wherein each R"' and R"" is independently C.sub.1-4 alkyl, C.sub.2-4 hydroxyalkyl, methoxy(C.sub.2-4 alkyl) or carbamoyl(C.sub.Type: GrantFiled: May 15, 1995Date of Patent: September 16, 1997Assignee: Clariant Finance (BVI) LimitedInventors: Jordi Berenuger Barra, Herbert Holliger, Jose Rocas Sorolla
-
Patent number: 5466790Abstract: Azo dyes of the formula ##STR1## where L.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl or phenyl,L.sup.2 and L.sup.3 are each substituted or unsubstituted C.sub.1 -C.sub.8 -alkyl, or together a radical of the formula ##STR2## where n is 0, 1 or 2, Y.sup.1 and Y.sup.4 are hydrogen, hydroxymethyl, 1,2-dihydroxyethyl or a radical of the formula COO.sym.M.sup..crclbar. or SO.sub.3.sup..crclbar. M.sup..sym., Y.sup.2 and Y.sup.3 are halogen or hydroxymethyl, and M.sup..sym. is the equivalent of a cation,L.sup.4 is hydrogen, substituted or unsubstituted C.sub.1 -C.sub.8 -alkyl, substituted or unsubstituted phenyl, halogen, C.sub.1 -C.sub.8 -alkoxy, substituted or unsubstituted phenoxy, C.sub.1 -C.sub.8 -alkylthio, C.sub.1 -C.sub.8 -alkylsulfonyl, substituted or unsubstituted phenylthio, substituted or unsubstituted phenylsulfonyl, C.sub.1 -C.sub.8 -alkoxycarbonyl, C.sub.3 -C.sub.6 -alkenyloxycarbonyl or phenoxycarbonyl,X is nitrogen or the radical C--L.sup.5, where L.sup.Type: GrantFiled: September 30, 1994Date of Patent: November 14, 1995Assignee: BASF AktiengesellschaftInventors: Sabine Gruettner-Merten, Helmut Reichelt, Arno Lange, Helmut Degen
-
Patent number: 5459244Abstract: Novel polyfunctional azo reactive dyestuffs of the formula (I) ##STR1## in which Y denotes CH.sub.2 CH.sub.2 OSO.sub.3 H, CH.sub.2 CH.sub.2 Cl, CH.sub.2 CH.sub.2 OH or CH.dbd.CH.sub.2,X denotes F, Cl or OCH.sub.3, andR denotes hydrogen or C.sub.1 -C.sub.4 -alkyl, have been found, and a process for their preparation and their use for dyeing and printing hydroxyl- and amido-containing materials in hues having improved fastness properties are described.Type: GrantFiled: September 28, 1994Date of Patent: October 17, 1995Assignee: Bayer AktiengesellschaftInventor: Klaus Kunde
-
Patent number: 5424455Abstract: A heterocyclic compound of the formula, ##STR1## wherein A and B are each hydrogen, halogen, alkyl or alkoxy, R.sup.1 is alkylene having upto 6 carbon atoms, X is direct linkage or divalent group such as --O--, --S--and the like, T and U are each hydrogen or alkyl, l is 0 or 1 to 3, Q is 5-, 6- or 7- membered saturated or unsaturated heterocyclic residue, and Y is hydrogen, halogen, alkyl, alkoxy or ##STR2## and B are taken together with each other to form methylene-dioxy, which is useful for dyeing or printing hydrophobic fiber materials with superior dyeability to give a dyed or printed product of a red color excellent in fastness properties, particularly those such as washing fastness.Type: GrantFiled: July 28, 1993Date of Patent: June 13, 1995Assignee: Sumitomo Chemical Co., Ltd.Inventors: Jun Yamamoto, Yasuyoshi Ueda, Junichi Sekihachi, Yosuke Yamamoto, Takashi Omura
-
Patent number: 5424405Abstract: The fibre-reactive dyes of the formula ##STR1## where the variables are each as defined in the claims, are suitable in particular for dyeing nitrogen-containing and hydroxyl-containing fibre materials.Type: GrantFiled: November 19, 1993Date of Patent: June 13, 1995Assignee: Ciba-Geigy CorporationInventors: Jean-Marie Adam, Guido Jordine
-
Patent number: 5326866Abstract: A liquid azo dye represented by the formula: ##STR1## (wherein, A stands for a phenylene group which may have a substituent, n is o or 1, Cp is a pyrazolone derivative residue or a naphthol derivative residue, X is --NH-- or --COO-- and R is an alkyl group having 3 to 12 carbon atoms).Type: GrantFiled: May 12, 1993Date of Patent: July 5, 1994Assignee: Orient Chemical Industries, Ltd.Inventors: Takashi Ono, Tatsuya Yagyu, Tetsui Akase
-
Patent number: 5196519Abstract: Certain reducible compounds are useful in analytical compositions, elements and methods, for example for the detection of bacterial cells. These compounds comprise a moiety which provides an aniline dye upon reduction. Structurally, the reducible compounds are quinones having suitable substituents which promote varying amounts of aniline dye release at physiological pH.Type: GrantFiled: December 4, 1991Date of Patent: March 23, 1993Assignee: Eastman Kodak CompanyInventor: Jared B. Mooberry
-
Patent number: 5149789Abstract: Reactive dyes of the formula ##STR1## where 1 is 0 or 1,n is 0 or 1,E is nitrogen or C--Cl,A is the radical of an azo dye attached to the triazine ring via an imino or C.sub.1 -C.sub.4 -alkylimino group,B--if E is nitrogen--is the radical of an azo dye or of a formazan dye which in either case is bonded to the triazine ring via an imino or C.sub.1 -C.sub.4 -alkylimino group or else--if n is 0--is fluorine, chlorine or unsubstituted or substituted amino, or --if E is C--C1--is fluorine, chlorine or methyl,X.sup.1 and X.sup.2 are independently of the other fluorine or chlorine,X.sup.3 is fluorine or chlorine or else--if E is C--Cl--methylsulfonyl andZ.sup.1 and Z.sup.2 are independently of the other a radical of the formula ##STR2## where L.sup.3 and L.sup.4 are independently of the other hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl,with the proviso that l and n are not simultaneously 0 and that, if E is C--Cl or if n is 0 and Z.sup.1 is the radical of the formula ##STR3## where L.sup.Type: GrantFiled: March 8, 1990Date of Patent: September 22, 1992Assignee: BASF AktiengesellschaftInventors: Joerg L. Jessen, Klaus Pandl, Hermann Loeffler, Bernd Siegel, Manfred Patsch
-
Patent number: 5095101Abstract: The present invention provides compounds of the formula, ##STR1## in which both groups --NR.sub.1 R.sub.2 are identical; R.sub.1 is C.sub.2-4 alkyl, substituted by one or two hydroxy groups or by one --OR.sub.3 groups, where R.sub.3 is C.sub.1-4 alkyl or C.sub.2-4 hydroxyalkyl, andR.sub.2 is hydrogen, C.sub.2-4 hydroxyalkyl or --CH.sub.2 CH.sub.2 CN, provided that when R.sub.2 is --CH.sub.2 CH.sub.2 CN then R.sub.1 can only be --CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 OH,and mixtures of such compounds, which compounds are in free acid or salt form, and are useful for dyeing or printing hydroxy group- or nitrogen-containing organic substrates, especially leather and textiles containing or consisting of natural or synthetic polyamides or of natural or regenerated cellulose; the most preferred substrate is textile material containing or consisting of cotton.Type: GrantFiled: July 14, 1988Date of Patent: March 10, 1992Assignee: Sandoz Ltd.Inventor: Hans von Tobel
-
Monoazo pigments derived from diazotized di- or trichloroanilines, preparation thereof and their use
Patent number: 5086168Abstract: The invention relates to monoazo pigments prepared from dichloroanilines as diazo components and CH-acidic coupling components of the acetoacetarylamide or naphthol series, these pigments only containing an extremely low level of polychlorinated biphenyls (PCBs) (at most 25 .mu.g per g of pigment).The process for preparing the pigments takes the form of an azo coupling in an aqueous medium, whereina) azo coupling is effected by adding the diazonium salt solution to a suspension or solution of the coupling component or by simultaneously metering the aqueous suspensions or solutions of the diazonium salt and of the coupling component into the reaction mixture,b) azo coupling is effected at a pH or within a pH range of less than pH 7 andb1) between pH 4 and 7 during and after azo coupling less than 0.Type: GrantFiled: September 5, 1990Date of Patent: February 4, 1992Assignee: Hoechst AktiengesellschaftInventor: Wolfgang Rieper -
Patent number: 4898933Abstract: Water-soluble azo compounds having useful fiber-reactive dye properties conforming to the general formula ##STR1## in which: A is phenylene which may be substituted by lower alkoxy, lower alkyl, chlorine, sulfo and carboxy, or is a radical of the formula ##STR2## in which W is a direct bond or a radical of the formula --CH.dbd.CH-- or --NH--CO--NH-- and R* denotes hydrogen, nitro, sulfo, carboxy, methyl, ethyl, methoxy or ethoxy;n is the number zero or 1;B is a radical of the formula ##STR3## where R is equal to carboxy or carbamoyl; M is hydrogen or an alkali metal;K is a radical of the formula ##STR4## in which D is phenylene which may be substituted by chlorine, bromine, lower alkyl, lower alkoxy, carboxy and sulfo, or unsubstituted or sulfo substituted naphthylene;R.sup.1 is hydrogen, chlorine, lower alkyl or lower alkoxy;R.sup.2 is hydrogen or lower alkyl;G is carboxy, methyl or lower carbalkoxy;Y is vinyl, .beta.-sulfatoethyl or .beta.-chloroethyl;m is the number zero or 1;Z is .alpha.- or .beta.Type: GrantFiled: May 5, 1989Date of Patent: February 6, 1990Assignee: Hoechst AktiengesellschaftInventors: Ludwig Schlafer, Hartmut Springer, Reinhard Hahnle
-
Patent number: RE35593Abstract: A compound of formula (I) or a pharmaceutically acceptable salt thereof: ##STR1## wherein R.sup.1 represents ##STR2## in which each of p and q independently represents an integer of 2 to 4, r represents an integer of 2 to 4, s represents 1 or 2 and t represents 0 or 1;R.sub.2 is a group OR.sub.4, where R.sub.4 is C.sub.1-4 alkyl, C.sub.2-4 alkenyl, C.sub.2-4 alkynyl, a group OCOR.sub.5 where R.sub.5 is hydrogen or R.sub.4, or a group NHR.sub.6 or NR.sub.7 R.sub.8 where R.sub.6, R.sub.7 and R.sub.8 are independently C.sub.1-2 alkyl; andR.sub.3 is chloro, fluoro, bromo, cyclopropyl, C.sub.1-3 alkyl substituted by one, two or three halogen atoms, or R.sub.3 is a group (CH.sub.2).sub.n R.sub.9 where R.sub.9 is --CN, --OH, --OCH.sub.3, --SH, --SCH.sub.3, --C.tbd.CH or --CH.dbd.CH.sub.2 and n is O or 1, with the proviso that when n is 0, R.sub.9 is not --OH or --SH.Type: GrantFiled: January 11, 1996Date of Patent: August 19, 1997Assignee: Beecham Group p.l.c.Inventors: Barry S. Orlek, Steven M. Bromidge, Steven Dabbs