261 |
Oxidative dye composition and indicator |
US11222335 |
2005-09-08 |
US20070054412A1 |
2007-03-08 |
Tricia Cregger; Randal Eveland; Antoinette Bower |
An oxidative dye solution comprises an indicating dye that has been reacted with a reducing agent. The pre-reacted dye when subjected to an oxidizing disinfection or sterilization agent such as peracetic acid or hydrogen peroxide under goes a visible color change and thus can serve as a chemical, process, or chemical integrator, indicator. The dyes include various azines, thiazines, and oxazines compounds and the reducing agents include alkali metal alkyloxides and alkaline earth metal alkyloxide compounds. |
262 |
Methine compound and silver halide photographic material containing the same |
US11516794 |
2006-09-07 |
US20070004923A1 |
2007-01-04 |
Katsumi Kobayashi; Takashi Katoh; Junji Nishigaki |
Disclosed is a compound represented by the following formula (I): wherein Z1 represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring; Z2 represents an atomic group necessary to form a 5- or 6-membered heterocyclic ring, Z2 may further be substituted, or may be condensed with a hetero ring of a benzene ring; R1 represents a hydrogen atom, a halogen atom, a mercapto group, an alkyl group, an alkenyl group, an aryl group, an alkylthio group, an alkenylthio group, or an arylthio group; L1 and L2 each represents a methine group; p1, represents 0 or 1; V1 represents a substituent; and n represents 0, 1 or 2, and when n represents 2, a plurality of V1 may be the same or different. |
263 |
Compositions, systems, and methods for imaging |
US11092407 |
2005-03-29 |
US20060228514A1 |
2006-10-12 |
Makarand Gore |
A composition, method, and system for recording an image. The system includes a multiphase imaging material in which energy is absorbed by an antenna material. The absorbed energy causes the reaction of an oxidizer and a leucozine dye. |
264 |
Nitrogen-containing tricyclic compounds and drugs containing the same |
US10201952 |
2002-07-25 |
US20030171367A1 |
2003-09-11 |
Mitsuaki
Miyamoto; Tatsuya
Yoshiuchi; Keizo
Sato; Makoto
Kaino; Masayuki
Tanaka; Motohiro
Soejima; Katsuhiro
Moriya; Yoshinori
Sakuma; Koji
Yamada; Kokichi
Harada; Yukio
Nishizawa; Seiichi
Kobayashi; Makoto
Okita; Koichi
Katayama |
A phenothiazine, acridan, acridone oxime, acridone hydrazone and dibenzodiazepine derivative represented by formula (I) 1 effective against diseases in which histamine, leukotrienes, etc. participate and effective in preventing or treating diseases in which chemical mediators such as histamine and leukotrienes participate, for example, asthma, allergic rhinitis, atopic dermatitis, urticaria, hay fever, gastrointestinal allergy and food allergy. |
265 |
Nitrogen-containing tricyclic compounds and drugs containing the same |
US09985416 |
2001-11-02 |
US06489336B2 |
2002-12-03 |
Mitsuaki Miyamoto; Tatsuya Yoshiuchi; Keizo Sato; Makoto Kaino; Masayuki Tanaka; Motohiro Soejima; Katsuhiro Moriya; Yoshinori Sakuma; Koji Yamada; Kokichi Harada; Yukio Nishizawa; Seiichi Kobayashi; Makoto Okita; Koichi Katayama |
A phenothiazine, acridan, acridone oxime, acridone hydrazone and dibenzodiazepine derivative represented by formula (I) effective against diseases in which histamine, leukotrienes, etc. participate and effective in preventing or treating diseases in which chemical mediators such as histamine and leukotrienes participate, for example, asthma, allergic rhinitis, atopic dermatitis, urticaria, hay fever, gastrointestinal allergy and food allergy. |
266 |
Process for the production of thiazine-indigo pigments |
US09620271 |
2000-07-19 |
US06339084B1 |
2002-01-15 |
Bansi Lal Kaul; Bruno Piastra |
A process of forming the cis- or the trans-isomers of thiazine-indigo compounds comprising the step of reacting o-aminomercapto-carbocyclic or -heterocyclic compounds with a maleic acid or fumaric acid derivative in the presence of an aqueous system. The invention further relates to a process of converting cis-isomers of thiazine-indigo compounds into the trans-isomers being pigments. The invention also relates to the cis-isomers of thiazine-indigo compounds of formula I as defined in claim 14 which are new compounds. |
267 |
Methine compound and silver halide photographic material containing the same |
US09522852 |
2000-03-10 |
US06333146B1 |
2001-12-25 |
Katsumi Kobayashi; Takashi Katoh; Junji Nishigaki |
Disclosed is a compound represented by the following formula (I): wherein Z1 represents an atomic group necessary to form a 5- or 6-membered nitrogen-containing heterocyclic ring; Z2 represents an atomic group necessary to form a 5- or 6-membered heterocyclic ring, Z2 may further be substituted, or may be condensed with a hetero ring or a benzene ring; R1 represents a hydrogen atom, a halogen atom, a mercapto group, an alkyl group, an alkenyl group, an aryl group, an alkylthio group, an alkenylthio group, or an arylthio group; L1 and L2 each represents a methine group; p1 represents 0 or 1; V1 represents a substituent; and n represents 0, 1 or 2, and when n represents 2, a plurality of V1 may be the same or different. |
268 |
Process for manufacture of in vivo stain composition |
US09759808 |
2001-01-11 |
US20010007904A1 |
2001-07-12 |
Douglas
D.
Burkett |
A process for synthesizing 2-amino-5-dimethlyaminophenyl thiosulfonic acid comprises the step of oxidizing N,Nnull-dimethyl-null-phenylene-diamine in the presence of a source of thiosulfate ions, while maintaining the temperature of the reaction mixture not higher than about 10null C. This compound is useful as an intermediate in the synthesis of toluidine blue O. A process for manufacturing toluidine blue O with improved yield, includes the step of preparing the intermediate 2-amino-5-diethylaminopropyl thiosulfonic acid according to the above described procedure. |
269 |
Photothermographic material |
US09137834 |
1998-08-21 |
US06245499B1 |
2001-06-12 |
Keiichi Suzuki; Toshiaki Kubo; Yoshio Inagaki; Tsutomu Arai |
In a photothermographic material comprising an organic silver salt, a silver halide, and a reducing agent, a hydrazine compound of a special structure and a sensitizing dye of a special structure are contained. The photothermographic material shows high Dmax and ultrahigh contrast. |
270 |
Process for manufacture of in vivo stain composition |
US09110788 |
1998-07-06 |
US06194573B1 |
2001-02-27 |
Douglas D. Burkett |
A process for synthesizing 2-amino-5-dimethlyaminophenyl thiosulfonic acid comprises the step of oxidizing N,N′-dimethyl-&rgr;-phenylene-diamine in the presence of a source of thiosulfate ions, while maintaining the temperature of the reaction mixture not higher than about 10° C. This compound is useful as an intermediate in the synthesis of toluidine blue O. A process for manufacturing toluidine blue O with improved yield, includes the step of preparing the intermediate 2-amino-5-diethylaminopropyl thiosulfonic acid according to the above described procedure. |
271 |
Phthalocyanine compound, its intermediate, process for producing the
compound, and use thereof |
US221152 |
1998-12-28 |
US5973140A |
1999-10-26 |
Yojiro Kumagae; Toshihiro Masaoka; Shigeo Fujita; Tsunehito Eda |
The invention relates to a novel phthalocyanine compound absorbing in the near infrared region of the spectrum with a high absorption coefficient which features high solubility in solvents, good compatibility with resins and high aging resistance, thus finding application as a near infrared ray absorbing material or a light-heat conversion material with great advantage and to a process for producing the phthalocyanine compound. The novel phthalocyanine compound has the following general formula: ##STR1## wherein R represents alkyl or alkoxyalkyl; X represents halogen, alkylthio, phenylthio which may be substituted, or naphthylthio which may be substituted; M represents a couple of hydrogen atoms, a divalent metal, or a trivalent or tetravalent metal derivative. The near infrared ray absorbing and light-heat conversion materials containing the above phthalocyanine compound are also described. |
272 |
Light decolorizable recording material, ink and toner |
US799212 |
1997-02-13 |
US5846682A |
1998-12-08 |
Katsumi Murofushi; Yoshikazu Hosada |
A light decolorizable recording material comprising a colored dye having absorptions in the visible light region and a boron compound represented by the general formula (1), ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently represents an alkyl, aryl, allyl, aralkyl, alkenyl, alkynyl, silyl, heterocyclic, substituted alkyl, substituted aryl, substituted allyl, substituted aralkyl, substituted alkenyl, substituted alkynyl or substituted silyl group, and Z.sup.+ represents a quaternary ammonium, quaternary pyridinium, quaternary quinolinium or phosphonium cation. |
273 |
Triphendioxazine and triphendithiazine direct dyestuffs |
US405908 |
1989-09-12 |
US4990615A |
1991-02-05 |
Hermann Henk; Wolfgang Harms; Peter Wild |
Triphendioxazine and triphendithiazine direct dyestuffs of the formula ##STR1## in which the substituents have the meanings given in the description produce on natural and synthetic OH-- and NH-- containing materials clear blue dyeings having good light and wet properties. |
274 |
Laminating transparent or translucent materials using ionic dye-counter
ion complexes |
US220363 |
1988-07-11 |
US4874450A |
1989-10-17 |
Peter Gottschalk |
A process for laminating two or more transparent or translucent substrates or one transparent and one opaque substrate together which comprises the steps of:coating a photohardenable composition on one surface of a first translucent substrate, said photohardenable composition comprising a free radical addition polymerizable or crosslinkable compound and a dye-counter ion complex, said complex being capable of absorbing actinic radiation and producing free radicals which initiate free radical polymerization or crosslinking of said compound, and preferably being photobleachable,applying a second translucent substrate to said photohardenable composition such that said photohardenable composition is interposed between said first translucent substrate and said second translucent substrate, andexposing said substrates to actinic radiation. |
275 |
Azine redox dyes and leuco azine dyes |
US781913 |
1985-09-30 |
US4710570A |
1987-12-01 |
Tran V. Thien |
Azine redox dyes and their corresponding dyes of the formula: ##STR1## in which: X is O, S, NR.sup.2,Z completes a fused aromatic of heterocyclic ring system,n is 0 or 1 to allow one R.sup.1 ring substituent,Q represents CR.sup.4 R.sup.5 in which at least one of R.sup.4 and R.sup.5 is an electronegative group or R.sup.4 and R.sup.5 may complete a ring, orwhen X is S Q may represent NR.sup.3 in which R.sup.3 is an aromatic or heterocyclic group.The leuco dyes are useful as dye generators in pressure sensitive, thermographic or photothermographic imaging systems. |
276 |
3-substituted carbonyloxy-7-disubstituted amino-10-substituted
carbonylphenothiazines |
US771875 |
1985-09-03 |
US4604458A |
1986-08-05 |
William M. Hung |
3-(R-Carbonyloxy)-7-(N-R.sup.1 -N-R.sup.2 -amino)-10-(RCO)-phenothiazines useful as color formers, particularly in electrochromic recording systems, are prepared by the interaction of the corresponding 7-(N-R.sup.1 -N-R.sup.2 -amino)phenothiazin-3-one with a reducing agent to obtain the corresponding leuco compound and subsequently interacting the leuco compound with about two molecular proportions of an acylating agent. |
277 |
Substituted (10H-phenothiazin-10-L)-propyl-1-piperazines |
US402704 |
1982-07-28 |
US4471116A |
1984-09-11 |
Arnold B. Davidson; Robert W. Guthrie; Richard W. Kierstead; Albert Ziering |
Substituted (10H-phenothiazin-10-yl)propyl-1-piperazines of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, A, X, m, n and s are as hereinafter set forth,are described. The compounds of formula I, which contain a piperazine moiety combined by an ether linkage to different phenolic moieties, are useful as orally active long lasting antipsychotic agents. |
278 |
Dyestuffs containing amino or imino groups |
US014780 |
1979-02-23 |
US4237281A |
1980-12-02 |
William E. Long |
Novel dyestuffs containing amino or imino groups and their preparation are provided.These dyestuffs have the general formula ##STR1## wherein R is --N(R.sub.3)CH.sub.2 --Z or --N.dbd.CH--Z, X is N or CR.sub.6 where R.sub.6 is a hydrogen atom or an optionally substituted alkyl or aryl group, Y is S.sup..sym., O.sup..sym., N or N.sup..sym. R.sub.7 where R.sub.7 is a hydrogen atom or an optionally substituted alkyl or aryl group, R.sub.1, R.sub.1 and R.sub.2 each represent a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, or R.sub.1 and R.sub.2 together with the nitrogen atom complete a heterocyclic ring, or one of R.sub.1 and R.sub.2 can be hydrogen and the other of R.sub.1 and R.sub.2 can be aryl, Z is a group which comprises both an activating group which contains at least one double bond system and also a ballasting group and R.sub.4 and R.sub.5 each represent optional substituents or form an annelated benzene ring. The new dyestuffs are useful in the photographic field especially in the photographic dye diffusion transfer process for the production of photographic images. |
279 |
Method of separating thionine and its N-methyl derivatives from each
other |
US668051 |
1976-03-18 |
US4003892A |
1977-01-18 |
Walter Lohr; Norbert Grubhofer; Inge Sohmer; Dietrich Wittekind |
Mixtures of cationic thiazine dyes containing two or more members of the group consisting of thionine, azure A, azure B, azure C, and methylene blue may be resolved into pure individual compounds by column chromatography on slica gel using as a solvent system a mixture of water, acetic acid, and formic acid. The several fractions eluted sequentially from the column contain the pure individual dyes in the formate or acetate form. Because high solubility is essential for use of the dyes in staining blood smears, the acetates or formates are converted to the chlorides by adsorption on a solid substrate and contact with NaCl solution, elution with methanol, and recovery of the solid chlorides from the methanol solution. |
280 |
New coloring matters |
US2675380D |
|
US2675380A |
1954-04-13 |
|
|