Plural Acyclic Azo Group Component Containing Patents (Class 106/31.81)
-
Patent number: 10513613Abstract: The present invention provides C.I. Pigment Yellow 155 having a methanol wettability (MW value) of the pigment powder of 10% to 2%, each inclusive.Type: GrantFiled: October 23, 2015Date of Patent: December 24, 2019Assignee: Clariant Plastics & Coatings LtdInventors: Daisuke Harada, Tomohiro Chino
-
Patent number: 10289017Abstract: Provided is a yellow toner which provides a sharper color than ever before in small amounts and which has excellent light resistance. A yellow toner comprising a binder resin and a yellow colorant, wherein a compound A represented by the following general formula (1) and a compound B represented by the following general formula (2) are contained as the yellow colorant, and wherein a total content of the compound A and the compound B is from 3 to 30 parts by mass with respect to 100 parts by mass of the binder resin, and a mass ratio of the content of the compound A to the content of the compound B (compound A/compound B) is from 0.Type: GrantFiled: April 26, 2016Date of Patent: May 14, 2019Assignee: ZEON CORPORATIONInventor: Takuya Otake
-
Patent number: 9975846Abstract: The present invention relates to compounds of general formula (I) and pharmaceutically acceptable salts thereof; wherein R1-R11, L, Z, Y, and Z are as defined in the claims. The invention also relates to said compounds for use as a medicament and particularly in the treatment of traumatic brain injury.Type: GrantFiled: October 2, 2015Date of Patent: May 22, 2018Assignee: MEDICORTEX FINLAND OYInventor: Adrian Harel
-
Patent number: 9740126Abstract: An electrostatic charge image developing toner includes a binder resin, C.I. Pigment Yellow 155, and toner particles containing at least one selected from dimethyl 2-aminoterephthalate and 1,4-bis(acetoacetylamino)benzene, wherein a total content of dimethyl 2-aminoterephthalate and 1,4-bis(acetoacetylamino)benzene in the toner particles is from 1 ppm to 500 ppm.Type: GrantFiled: July 8, 2016Date of Patent: August 22, 2017Assignee: FUJI XEROX CO., LTD.Inventors: Masaki Iwase, Akira Matsumoto
-
Publication number: 20140287151Abstract: An ink formulation comprises a binder and at least one marking component, which comprises at least one metal oxides or oxyanion and at least one oxidizing/reducing agent, which absorbs laser irradiation between wavelengths of 780-10,600 nm, thereby causes the formulation to change color.Type: ApplicationFiled: March 31, 2014Publication date: September 25, 2014Inventor: Jagdip Thaker
-
Publication number: 20130201265Abstract: The ink composition of the invention is applied to a region to which a color ink composition has been applied. The ink composition contains a weather resistance enhancer, is substantially free from a colorant, and is applied to a recording medium to form a coating film exhibiting an integrated value of light transmittance of not more than 2000 for each nanometer at wavelengths of 320 nm to 360 nm and an integrated value of light transmittance of not less than 36000 for each nanometer at wavelengths of 380 nm to 780 nm.Type: ApplicationFiled: February 6, 2013Publication date: August 8, 2013Applicant: SEIKO EPSON CORPORATIONInventor: Seiko Epson Corporation
-
Publication number: 20130149505Abstract: An ink set is provided which includes a first ink containing a first pigment, water, and a glycol ether having an HLB value, measured by Davies method, in the range of 4.2 to 8.0, and a second ink substantially not containing the glycol ether. The second ink contains a second pigment and water.Type: ApplicationFiled: December 10, 2012Publication date: June 13, 2013Applicant: Seiko Epson CorporationInventor: Seiko Epson Corporation
-
Patent number: 8034174Abstract: A diarylide yellow pigment formed by a coupling reaction of a benzidine and a mixture comprising 4-chloro-2,5-dimethoxy-acetoacetanilide and 2,4-dimethyl-acetoacetanilide. The diarylide yellow pigment has a desirable reddish shade than C.I. Pigment Yellow 83, exists in a solid solution, and contains fewer aromatic amine impurities.Type: GrantFiled: April 17, 2009Date of Patent: October 11, 2011Assignee: Sun Chemical CorporationInventors: Russell Schwartz, Ulrik Cassias, Palle Chris Nielsen
-
Patent number: 7901503Abstract: A sulfonated derivative of an organic pigment moiety comprising a polyetheramine, and a metal or ammonium salt. The pigment is used for coloration of printing inks and coatings. For ink-jet systems there is excellent filterability, low viscosity, and stability thereof.Type: GrantFiled: April 3, 2008Date of Patent: March 8, 2011Assignee: Sun Chemical CorporationInventor: Stanislav Vilner
-
Patent number: 7621992Abstract: An ink composition having a high optical density, can implement a clear color image and improve the durability of printed images, such as waterproofness, lightfastness, gasfastness, environmental resistance, etc., having excellent storage stability, and does not cause clogging of nozzles of a cartridge of an inkjet printer even after being stored for a long-term. An inkjet printer cartridge including the ink composition, and an inkjet recording apparatus including the cartridge.Type: GrantFiled: April 21, 2006Date of Patent: November 24, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Seung-min Ryu, Yeon-kyoung Jung
-
Patent number: 7449500Abstract: The invention relates to an ink composition containing a multimetallic oligomeric or polymeric azo colorant wherein the colorant is derived from the polymerization reaction of a polyvalent metal cation with a dimeric tridentate ligand containing a coordinating azo group.Type: GrantFiled: June 10, 2004Date of Patent: November 11, 2008Assignee: Eastman Kodak CompanyInventors: Mihaela L. Madaras, Steven Evans, Marcel B. Madaras, David T. Southby
-
Patent number: 7384472Abstract: The invention concerns a pigment preparation based on C.I. Pigment Yellow 155, containing 0.1% to 50% by weight, based on the weight of C.I. Pigment Yellow 155, of at least one pigment dispersant from the group of monoazo or disazo pigments substituted with at least one sulfonic acid group, characterized in that it has a chroma C greater than 53 in the CIELAB system in a solventborne alkyd melamine varnish comprising a 6.7% by weight concentration of the pigment preparation, and/or in that it has a chroma C greater than 35 in the CIELAB system in an aqueous base varnish system in a white reduction comprising a 0.2% by weight concentration of the pigment preparation in white reduction.Type: GrantFiled: March 14, 2007Date of Patent: June 10, 2008Assignee: Clariant International Ltd.Inventors: Karl-Heinz Schweikart, Jean-Philippe Lerch, Laurent Pourcheron
-
Patent number: 7341626Abstract: A pigment composition containing one or more, organic yellow pigments selected from the group C.I. Pigment Yellow (213), Pigment Yellow (214) and disazo pigment of the formula (I) and containing one or more inorganic pigments.Type: GrantFiled: August 18, 2004Date of Patent: March 11, 2008Assignee: Clariant Produkte (Deutschland) GmbHInventors: Joachim Weber, Gerhard Wilker
-
Patent number: 7318863Abstract: The invention relates to an azo pigment preparation containing a) at least one azo pigment, b) a resin based on colophonium or modified colophonium with an acid value equal to or higher than 320 mg KOH/g, and c) an ammonium salt of a sulfonated diaryl yellow pigment.Type: GrantFiled: October 5, 2004Date of Patent: January 15, 2008Assignee: Clariant Produkte (Deutschland) GmbHInventors: Heinz Bach, Ulrich Ott, Rainer Winter
-
Patent number: 7309389Abstract: The invention is directed to an electrophotographic toner or developer, powder coating, ink jet ink or an electronic media having an azo colorant prepared by conducting the diazotization of aromatic or hetaromatic amines or the azo coupling reaction or the diazotization and the azo coupling reaction in a microreactor.Type: GrantFiled: June 9, 2006Date of Patent: December 18, 2007Assignee: Clariant Finance (BVI) LimitedInventors: Ruediger Baur, Hans-Tobias Macholdt, Uwe Nickel, Leonhard Unverdorben, Christian Wille
-
Patent number: 7300511Abstract: Pigment dispersions that when used in printing ink having a relative interfacial tension drop of less than 1.5, and offering an ink viscosity of less than 150 Pa.s, and containing at least 45 wt. % pigment.Type: GrantFiled: July 1, 2005Date of Patent: November 27, 2007Assignee: Sun Chemical CorporationInventors: Gregory T. Huber, Tatiana N. Romanova, Russell J. Schwartz, Lisa Clapp, Terrance R. Chamberlain, Don Henderson
-
Patent number: 7279033Abstract: An ink-jet ink containing a colorless, water-soluble, planar compound having more than ten delocalized pi-electrons per molecule.Type: GrantFiled: September 9, 2004Date of Patent: October 9, 2007Assignee: Fujifilm CorporationInventors: Yoshiharu Yabuki, Toshiki Taguchi, Makoto Suzuki
-
Patent number: 7173114Abstract: A lightfast colorant and a lightfast ink composition including the lightfast colorant utilize a lightfast colorant that is derived by covalently binding a cinnamate derivative and a conventional colorant. The lightfast colorant improves storage stability as well as lightfastness when added to an ink composition.Type: GrantFiled: February 6, 2004Date of Patent: February 6, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung-hoon Lee, Seung-min Ryu, Yeon-Kyoung Jung
-
Patent number: 7160377Abstract: Aqueous, colloidal gas black suspension containing: (a) a gas black, (b) an azo compound of the formula 1 (c) and water. The aqueous, colloidal gas black suspension is produced by dispersing the gas black and the azo compound of the formula 1 in water. It can be used in the production of inks, ink-jet inks, surface coatings and colored printing inks.Type: GrantFiled: November 5, 2003Date of Patent: January 9, 2007Assignee: Degussa AGInventors: Heinz Zoch, Werner Kalbitz, Stephan Lüdtke, Thomas Lüthge, Ralph McIntosh, Gerd Tauber
-
Patent number: 7156910Abstract: It is an object of the present invention to provide a yellow ink composition which is superior in terms of color reproducibility not only in the high-brightness (high-L*) region, but also in the low-brightness yellow region, i.e., in the region of “low L*, a* close to zero, and high b*”, and an ink set equipped with a yellow ink which has a brightness that is high enough that graininess can be sufficiently suppressed, and which is also superior in terms of color reproducibility in the low-brightness yellow region, i.e., in the region of “low L*, a* close to zero, and high b*”. The present invention provides a yellow ink composition in which the Y value is 86 or greater when the Z value in the XYZ display system stipulated by the CIE is 23. Furthermore, the present invention also provides a yellow ink composition which contains a metal complex pigment. In particular, the yellow ink composition of the present invention can express a low-brightness yellow color with good reproducibility.Type: GrantFiled: April 28, 2005Date of Patent: January 2, 2007Assignee: Seiko Epson CorporationInventors: Shuichi Koganehira, Hironori Sato
-
Patent number: 7141105Abstract: The present invention relates to a water-based fluorescent ink for the purpose of measurement or judgment of the fluorescence emission in a visible light region by an excitation wavelength in a predetermined ultraviolet range, containing water, a coloring material dissolved or dispersed in water, and an organic solvent, having a plurality of fluorescent groups in the coloring material structure of the coloring material, and using a water-soluble coloring material having a sulfonic acid group as the water-soluble group in the state of a free acid, capable of improving the water resistance and the light resistance, dramatically increasing the content of the fluorescent coloring material in the ink, which has conventionally been included only by a small amount in the ink due to the concentration quenching problem, obtaining preferable fluorescence emission and water resistance of the recorded image, and providing preferable adhesion resistance to the recording medium of the coloring material and reliability.Type: GrantFiled: October 29, 2004Date of Patent: November 28, 2006Assignee: Canon Kabushiki KaishaInventors: Masako Udagawa, Shoji Koike, Makoto Aoki, Akira Nagashima, Shinichi Hakamada
-
Patent number: 7135062Abstract: Image-recording, hydrophilic colorants having an organic pigment linked to a hydrophilic compound through a linking group and which are capable of forming images excellent in print quality such as chroma, gloss, density, light fastness and abrasion fastness, and also as hydrophilic colorants capable of affording inks excellent in physical properties such as long-term storability and press stability are described.Type: GrantFiled: June 11, 2004Date of Patent: November 14, 2006Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Michiei Nakamura, Hideyuki Koiso, Naoyuki Sakai, Yoshiyuki Zama, Atsushi Nogami, Hiroyuki Shimanaka, Seishichi Sasaki, Hiroaki Saikatsu
-
Patent number: 7115164Abstract: A process for the manufacture of a transparent Pigment Yellow 155 or transparent Pigment Yellow 180 is disclosed, said process includes grinding particles of said pigment in the presence of a grinding agent until said particles achieve a surface area of at least about 40 m2/g.Type: GrantFiled: February 28, 2005Date of Patent: October 3, 2006Assignee: Sun Chemical CorporationInventors: George H. Robertson, Edward H. Sung, Veronica L. Chambers
-
Patent number: 7083674Abstract: A pigment dispersant represented by the following general formula (1) is provided: wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 each independently is —H, —Cl, —CH3, —CF3, —NO2, —COOCH(CH3)2 or —COOCH2CH2Cl; R11, R12, R13 and R14 each independently is —H, —Cl, —CH3 or —CN; M is one equivalent of a bivalent or trivalent metal; and n is an integer of 1 to 3.Type: GrantFiled: September 6, 2005Date of Patent: August 1, 2006Assignee: Toyo Ink Mfg. Co., Ltd.Inventors: Takashi Kamikubo, Tetsuya Sai
-
Patent number: 7056376Abstract: A process for printing an image on a substrate comprising applying thereto a composition comprising a liquid medium and a compound of Formula (1): T-Q-N?N-L-T??Formula (1) wherein: each T independently is an azo group; Q is an optionally substituted, optionally metallised 1,8-dihydroxynaphthyl group; and L is a divalent organic linker group. Also claimed are compositions and dyes.Type: GrantFiled: April 11, 2003Date of Patent: June 6, 2006Assignee: Avecia LimitedInventors: Ajay Haridas Popat, Alan Dickinson, Maria Soteri Hadjisoteriou, Neil James Thompson, Paul Wight, Peter Gregory, Roy Bradbury, Philip John Double, Thomas Paul
-
Patent number: 7008475Abstract: The invention relates to aqueous colorant preparations containing A) between 0.1 and 50 wt. % of at least one organic and/or inorganic pigment and/or at least one organic colorant. B) between 0.01 and 80 wt. % of at least one naphthol-oxyalkylate sulfopropyl ether, one alkanol-oxyalkylate sulfopropyl ether or one alkylphenol-oxyalkylate sulfopropyl ether. C) between 0 and 30 wt. % of at least one organic solvent. D) between 0 and 20 wt. % of other standard derivatives and E) between 10 and 90 wt % of water, respectively in relation to the total weight (100%) of the colorant preparation. The colorant preparation is used, for example, in printing inks, especially ink jet printing inks.Type: GrantFiled: June 21, 2002Date of Patent: March 7, 2006Assignee: Clariant GmbHInventors: Rudolf Randler, Ulrike Rohr, Josef Geisenberger, Ruediger Baur, Hans-Tobias Macholdt, Heidemarie Menzel
-
Patent number: 7005004Abstract: Aqueous, colloidal gas black suspension, containing a gas black, an azo compound of formula 1, and water. The aqueous, colloidal gas black suspensions is produced in that the gas black and the azo compound of general formula 1 are dispersed in water. It may be used to produce inks, ink jet inks, paints, printing inks, latices, textiles, leather, adhesives, silicones, plastics materials, concrete and construction materials.Type: GrantFiled: March 30, 2004Date of Patent: February 28, 2006Assignee: Degussa AGInventors: Werner Kalbitz, Gerd Tauber, Heinz Zoch, Stephan Lüdtke, Thomas Lüthge, Ralph Mcintosh
-
Patent number: 6918955Abstract: An ink-jet recording liquid using a dye and a pigment, which is excellent in dispersibility and has good printing performance and storage stability, and a process for producing the same are provided. There are provided an ink-jet recording liquid containing a pigment, a dye and a surfactant which are incorporated in an aqueous medium, characterized in that (1) the pigment and the dye at least partly comprise a pigment and a dye reversibly adsorbed thereon without involving a chemical reaction, (2) the dye reversibly adsorbed on the pigment without involving a chemical reaction contains a dye having a dye adsorption shown by the following formula (1) of 0.02 g/g or more, and (3) as the surfactant, a nonionic surfactant and an anionic surfactant coexist; and a process for producing the same.Type: GrantFiled: June 23, 2004Date of Patent: July 19, 2005Assignee: Mitsubishi Chemical CorporationInventors: Masanobu Yokoyama, Hisao Takeuchi, Hideaki Tanaka, Kazuhiro Maruyama, Katsuhito Kanazawa
-
Patent number: 6852154Abstract: The invention provides: an ink set comprising a yellow ink composition, a magenta ink composition, and a cyan ink composition, wherein the magenta ink composition contains as a colorant at least one member selected from compounds represented by the following formula (1) and salts thereof; and an ink set comprising two magenta ink compositions differing in color density, wherein the magenta ink composition having a lower color density contains as a colorant at least one member selected from compounds represented by the following formula (1) and salts thereof. Also disclosed are: an ink cartridge housing the ink set; a process for recording with the ink set; and recorded matter obtained by recording with the ink set.Type: GrantFiled: April 21, 2003Date of Patent: February 8, 2005Assignee: Seiko Epson CorporationInventors: Kazuhiko Kitamura, Hiroko Hayashi, Kyoichi Oka
-
Publication number: 20040237842Abstract: The invention pertains to the field of green colour filters and LCDs. It has been found that pigments with surprisingly improved coloristic, chemical and physical properties are obtained by salt-kneading a halogenated phthalocyanine pigment together with a yellow pigment of the disazo condensation, barbituric acid or azoquinolone series. The process takes place in the presence of an organic liquid and in the absence of binder or optionally in the presence of a relatively small amount of binder. Claimed are the process itself as well as the green pigment composition obtained by the process and compositions comprising it.Type: ApplicationFiled: April 6, 2004Publication date: December 2, 2004Inventors: Veronique Hall-Goulle, Takashi Deno
-
Publication number: 20040206271Abstract: The invention relates to aqueous colorant preparations containing A) between 0.1 and 50 wt. % of at least one organic and/or inorganic pigment and/or at least one organic colorant. B) between 0.01 and 80 wt. % of at least one naphthol-oxyalkylate sulfopropyl ether, one alkanol-oxyalkylate sulfopropyl ether or one alkylphenol-oxyalkylate sulfopropyl ether. C) between 0 and 30 wt. % of at least one organic solvent. D) between 0 and 20 wt. % of other standard derivatives and E) between 10 and 90 wt % of water, respectively in relation to the total weight (100%) of the colorant preparation. The colorant preparation is used, for example, in printing inks, especially ink jet printing inks.Type: ApplicationFiled: January 8, 2004Publication date: October 21, 2004Inventors: Rudolf Randler, Ulrike Rohr, Josef Geisenberger, Ruediger Baur, Hans-Tobias Macholdt, Heidemarie Menzel
-
Publication number: 20040182279Abstract: A lightfast colorant and a lightfast ink composition include a lightfast colorant that is derived by covalently binding a benzophenone derivative and a conventional colorant and that imparts effective lightfastness and long-term storage stability to an ink composition that is prepared with the same.Type: ApplicationFiled: March 18, 2004Publication date: September 23, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Kyung-hoon Lee, Seung-min Ryu, Yeon-kyoung Jung
-
Patent number: 6764541Abstract: Disclosed is a colorant composition of the formula wherein R is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, and wherein R can be joined to the phenyl moiety to form a ring, R′ is an aromatic- or heteroaromatic-containing group, each Ra, independently of the others, is a halogen atom, an alkyl group, an alkoxy group, a nitrile group, a nitro group, an amide group, or a sulfonamide group, w is an integer of 0, 1, 2, 3, or 4, n is an integer representing the number of carbon atoms in each repeat alkylene oxide unit, and x is an integer representing the number of repeat alkylene oxide units, wherein said colorant has no more than one —OH, —SH, or primary or secondary amino group per molecule.Type: GrantFiled: April 24, 2003Date of Patent: July 20, 2004Assignee: Xerox CorporationInventors: Jeffery H. Banning, Donald R. Titterington, Clifford R. King
-
Patent number: 6756486Abstract: Disclosed are green shade yellow pigments represented by the Formula I: wherein R1 and R2 are independently selected from hydrogen, hydroxy, halogen, an alkyl group having 1 to about 4 carbon atoms, an alkoxy group having 1 to about 4 carbon atoms, a halo-alkyl group containing 1 to about 4 carbon atoms, an alkoxy carbonyl group having 1 to about 5 carbon atoms; R3 and R4 are independently selected from hydrogen, hydroxy, halogen, an alkyl group containing from 1 to about 4 carbon atoms, an alkoxy group containing from 1 to about 4 carbon atoms, and halo-alkyl groups containing from 1 to about 4 carbon atoms; and M is at least one divalent metal. Also disclosed are methods of making the green shade yellow pigments, methods of using the green shade yellow pigments, and coating compositions, ink compositions, electrostatic toner compositions, paint compositions, paper compositions, and plastic compositions containing the green shade yellow pigments.Type: GrantFiled: September 18, 2003Date of Patent: June 29, 2004Assignee: Engelhard CorporationInventors: Amrit P. Bindra, Steven A. Zamborsky
-
Patent number: 6746526Abstract: 1. A compound of Formula (1) and salts thereof: wherein: A is a substituted phenyl group carrying a group of the formula —NR3R4 and an ortho group selected from sulpho, phosphonato and phosphinato; n is 0 or 1; L1 and L2 are each independently H, optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl, or L1 and L2 together with the N atom to which they are attached form an optionally substituted 5- or 6-membered ring; R1 and R2 are each independently optionally substituted alkyl or optionally substituted alkoxy; and R3 and R4 are each independently H, optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl, or R3 and R4 together with the nitrogen atom to which they are attached form an optionally substituted 5- or 6-membered ring; or R3 is H, optionally substituted alkyl, optionally substituted cycloalkyl or optionally substituted aryl and R4 is an acyl group.Type: GrantFiled: March 27, 2002Date of Patent: June 8, 2004Assignee: Avecia LimitedInventor: Prahalad Manibhai Mistry
-
Publication number: 20040089198Abstract: A process for coloration of a substrate comprising applying thereto by means of an ink jet printer a composition comprising a medium and a compound of Formula (1): 1Type: ApplicationFiled: September 11, 2003Publication date: May 13, 2004Inventors: Christine Millard, Clive Edwin Foster, Peter Gregory
-
Publication number: 20040083924Abstract: Compouns of formula (I) 1Type: ApplicationFiled: August 1, 2003Publication date: May 6, 2004Inventor: Martin Oberholzer
-
Patent number: 6702883Abstract: The present invention is directed to a yellow ink which can realize images possessing excellent color reproduction and waterfastness. Images possessing very excellent color reproduction and lightfastness can be realized by using a yellow ink composition comprising C.I. Pigment Yellow 128 and C.I. Pigment Yellow 110 as a colorant, or by using a yellow ink set comprising a first yellow ink composition containing C.I. Pigment Yellow 128 and a second yellow ink composition containing C.I. Pigment Yellow 110.Type: GrantFiled: June 27, 2001Date of Patent: March 9, 2004Assignee: Seiko Epson CorporationInventors: Tsuyoshi Sano, Kiyohiko Takemoto
-
Publication number: 20040020404Abstract: A process for printing an image on a substrate comprising applying thereto a composition comprising a liquid medium and a compound of Formula (1):Type: ApplicationFiled: April 11, 2003Publication date: February 5, 2004Applicant: Avecia LimitedInventors: Ajay Haridas Popat, Alan Dickinson, Maria Soteri Hadjisoteriou, Neil James Thompson, Paul Wight, Peter Gregory, Roy Bradbury, Philip John Double, Thomas Paul
-
Publication number: 20030217672Abstract: Processes for preparing modified pigments are described. In one embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiol reagent comprising at least one —SH group and at least two ionic or ionizable groups. In a second embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiopolymer comprising at least one —SH group. Modified pigments are also described.Type: ApplicationFiled: May 10, 2002Publication date: November 27, 2003Inventor: Paul S. Palumbo
-
Patent number: 6641655Abstract: A fluidizing agent which is a diamine and/or diquaternary ammonium salt of a coloured acid of the phthalocyanine or disazo series of dyestuffs wherein the diamine or diquaternary ammonium cation is of formula (1) wherein R is optionally substituted C6-30-alkyl or optionally substituted C6-30-alkenyl; R1 is hydrogen, optionally substituted C1-30-alkyl or C2-30-alkenyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted aralkyl; R2, R3 and R5 are each, individually, optionally substituted C1-6-alkyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted aralkyl; R4 is hydrogen, optionally substituted C1-6-alkyl, optionally substituted cycloalkyl, optionally substituted aryl or optionally substituted aralkyl; X is C1-12-alkylene or C2-14-alkenylene; or R1 and R3 together with the two nitrogen atoms to which they are attached and X form a ring; and/or R4 and R5 together with the nitrogen atom to which they are attached form a ring.Type: GrantFiled: February 26, 2002Date of Patent: November 4, 2003Assignee: Avecia LimitedInventors: John Joseph McElhinney, Kristen Susan Low, Laura Janette Murphy
-
Patent number: 6602335Abstract: A method for dispersing a pigment in an aqueous solution is provided. The method comprises: (a) providing the pigment, which is distinguished in having an azo group and either a &bgr;-diketo structure or a hydroxyl group, each conjugatively associated with the azo group; (b) treating a surface of the pigment with a base having sufficient strength (e.g.Type: GrantFiled: May 8, 2001Date of Patent: August 5, 2003Assignee: Hewlett-Packard Development Company, L.P.Inventors: John R Moffatt, Joseph W Tsang
-
Publication number: 20020195022Abstract: A method for dispersing a pigment in an aqueous solution is provided. The method comprises: (a) providing the pigment, which is distinguished in having an azo group and either a &bgr;-diketo structure or a hydroxyl group, each conjugatively associated with the azo group; (b) treating a surface of the pigment with a base having sufficient strength (e.g.Type: ApplicationFiled: May 8, 2001Publication date: December 26, 2002Inventors: John R. Moffatt, Joseph W. Tsang
-
Publication number: 20020096085Abstract: An aqueous ink composition contains at least one pigment selected from the group consisting of a condensed azo pigment, a condensed polycyclic pigment, a phthalocyanine pigment, and a nickel complex azo pigment, at least an anionic surfactant with ethylene oxide group or a nonionic surfactant with ethylene oxide group as a dispersant, a wetting agent, a penetrating agent, and water, with the ink composition having a surface tension of 20 mN/m or more and less than 35 mN/m. A yellow ink containing at least one pigment selected from the group consisting of C.I. Pigment Yellow 128, C.I. Pigment Yellow 138, C.I. Pigment Yellow 151, C.I. Pigment Yellow 97, and C.I. Pigment Yellow 150, a magenta ink containing at least one pigment of C.I. Pigment Red 122 or C.I. Pigment Violet 19, a cyan ink containing at least one pigment of C.I. Pigment Blue 15:3 or C.I. Pigment Blue 15:4, each color ink further containing a specific anionic surfactant and a water-soluble organic solvent, and a black ink containing C.I.Type: ApplicationFiled: June 29, 2001Publication date: July 25, 2002Applicant: Ricoh Company, Ltd.Inventors: Akihiko Gotoh, Tomoko Maeda, Akiko Bannai, Kiyofumi Nagai, Hitoshi Arita, Tetsuya Kaneko, Nobutaka Osada, Toshiroh Tokuno, Masayuki Koyano, Kakuji Murakami
-
Patent number: 6358304Abstract: A rheology-modified ink includes (1) an ink carrier, which is either aqueous-based or solvent-based, (2) an organic pigment, which is preferably an azo pigment of the type generally used with an aqueous-based ink carrier, and (3) a flow-modifier, which is a metal salt of either an aromatic carboxylic acid or an aromatic hydroxy carboxylic acid. Addition of the flow-modifier (also called a rheology-modifier) improves the dispersion of pigment within the aqueous-based carrier thereby improving the flow characteristic of the ink. Also disclosed is a pigment including a flow-modifier and a rheology-modified paint.Type: GrantFiled: May 18, 1999Date of Patent: March 19, 2002Assignee: Uhlich Color Company, Inc.Inventor: Sain D. Kapoor
-
Patent number: 6303762Abstract: Disclosed is a method of producing a disazo pigment, which a coupling reaction is carried out while feeding, into an acidic aqueous solution, a tetrazo aqueous solution containing a tetrazo component of benzidines and a coupler aqueous solution containing a coupling component, wherein the coupling component is a mixture comprising a main component represented by the formula (1): CH3COCH2CONH—X, wherein X represents a phenyl group optionally having one or the same or different plural substituents selected from the group consisting of a methyl group, methoxy group and chlorine atom; a first additional component represented by the formula (2): CH3COCH2CONH—Y, wherein Y represents a phenyl group having a substituent selected from the group consisting of —CONR2 group, —SO2NR2 group and —NHCOR group, and the phenyl group may further have a substituent selected from the group consisting of a methyl group, methoxy group, chlorine atom, —CONR2 group, —SO2NR2 group and —NType: GrantFiled: April 6, 2001Date of Patent: October 16, 2001Assignee: TOYO INK Mfg. Co., Ltd.Inventors: Hitoshi Maki, Hideto Noguchi, Kenji Kitamura, Masami Shirao
-
Patent number: 6284029Abstract: A yellow ink composition for ink jet recording is provided which possesses excellent lightfastness and in addition can retain excellent color development for a long period of time. The yellow ink composition comprises both C.I. Pigment Yellow 74 and at least one second yellow pigment selected from the group consisting of C.I. Pigment Yellow 109, 110, 128, 150, and 154.Type: GrantFiled: May 13, 1999Date of Patent: September 4, 2001Assignee: Seiko Epson CorporationInventors: Tsuyoshi Sano, Kiyohiko Takemoto