Fluoran Or Derivative Containing Patents (Class 106/31.22)
  • Patent number: 8791045
    Abstract: The invention describes a color-developing composition that contains at least three major components: (1) a leuco dye or a combination of leuco dyes, (2) an color-developer or a combination of color-developers that can form colored complexes with the leuco dyes, and (3) a desensitizer to temporarily remove the effect of the developer so the leuco dye appears in its colorless form. An optional binder may be included so that the composition may be applied to a substrate as an ink. The ink composition may be applied to synthetic polymeric substrates and other substrates that are incorporated into absorbent articles or personal care products.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: July 29, 2014
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Ning Wei, Xuedong Song, JinHo Ryu, JunMo Gil
  • Patent number: 8506695
    Abstract: Coating compositions and industrial packages including the coating compositions are disclosed.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: August 13, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Molly L. Hladik, Mehrgan Khavari, Cari L. Dorsh
  • Publication number: 20130116644
    Abstract: The invention describes a color-developing composition that contains at least three major components: (1) a leuco dye or a combination of leuco dyes, (2) an color-developer or a combination of color-developers that can form colored complexes with the leuco dyes, and (3) a desensitizer to temporarily remove the effect of the developer so the leuco dye appears in its colorless form. An optional binder may be included so that the composition may be applied to a substrate as an ink. The ink composition may be applied to synthetic polymeric substrates and other substrates that are incorporated into absorbent articles or personal care products.
    Type: Application
    Filed: November 9, 2011
    Publication date: May 9, 2013
    Inventors: Ning Wei, Xuedong Song, JinHo Ryu, JunMo Gil
  • Patent number: 7807607
    Abstract: There are described novel rhodamine color-forming compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form. Thermal imaging members containing these color-formers are also described.
    Type: Grant
    Filed: December 23, 2008
    Date of Patent: October 5, 2010
    Assignee: Zink Imaging, Inc.
    Inventors: Kap-Soo Cheon, Michael P. Filosa, Fariza Hasan, Xavier Herault, John L. Marshall
  • Patent number: 7569515
    Abstract: An erasable image forming material includes a color former containing crystal violet lactone, a developer, a first binder resin of styrene-butadiene copolymer and a second binder resin of a styrene-based resin containing ?-methylstyrene, the first and second binder resins being in a compatible state.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: August 4, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Satoshi Takayama, Kenji Sano, Takeshi Gotanda, Yumiko Sekiguchi
  • Patent number: 7329630
    Abstract: Compositions and methods for production of color images having increased light stability and reduced browning are described. The color forming composition can include a leuco dye, an infrared absorber, and at least one of a stabilizer and an anti-fade agent. The color forming compositions can be stabilized such that less than about a 30% decrease in optical density occurs over a three year period. The stabilizers can include chroman, thiolane-nickel complexes, spiroindanes, while suitable anti-fade agents can include vitamin E, vitamin E analogs, astaxanthin, chroman, ascorbic acid, carotene, and mixtures thereof. The color forming compositions are ambient light stable and are useful in forming images on a wide variety of substrates such as optical disks.
    Type: Grant
    Filed: September 5, 2003
    Date of Patent: February 12, 2008
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Makarand P. Gore
  • Publication number: 20070270310
    Abstract: In one aspect, a method includes directing electromagnetic radiation to a structure, the structure including a substrate, a first layer, and a marking composition between the substrate and the first layer. At least a portion of the electromagnetic radiation is transmitted through the first layer, and the structure is marked.
    Type: Application
    Filed: May 22, 2006
    Publication date: November 22, 2007
    Inventors: David H. Blank, Benjamin J. Brown, Michael P. Secord, James W. Foley
  • Publication number: 20070245925
    Abstract: A no-mess water-based ink including a composition including water, an organic solvent, a coloring agent dissolved in the organic solvent, an emulsifier and a thickening agent for use in conjunction with a specially treated substrate containing a color developer.
    Type: Application
    Filed: August 3, 2006
    Publication date: October 25, 2007
    Inventors: Jie Li, Leena Vadaketh, Jacqueline Aseng
  • Patent number: 7276465
    Abstract: An erasable image forming material includes a color former, a developer, and a binder resin, the color former containing Crystal Violet Lactone and a specific fluorane compound can enhance light fastness as well as heat decolorizing performance.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: October 2, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Satoshi Takayama, Kenji Sano, Takeshi Gotanda
  • Patent number: 7060654
    Abstract: A coating includes an antenna uniformly distributed in both a matrix and a leuco-dye phase of the coating. A method for preparing an imaging material includes providing a powder having an activator and an antenna, dissolving the activator/antenna powder to form an activator/matrix pre-polymer solution, providing a leuco-dye alloy, and dispersing the leuco-dye alloy into the activator/matrix pre-polymer solution to form a radiation-curable paste. An image-recording medium includes a matrix having an antenna and an activator, and an alloy dispersed in the matrix as an independent phase. The alloy includes an antenna, a leuco-dye, and an accelerator.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: June 13, 2006
    Assignee: Hewlett-Packard Development Company
    Inventors: Vladek P Kasperchik, Makarand P. Gore, Marshall Field, Jayprakash Bhatt
  • Patent number: 6635602
    Abstract: A process for the manufacture of mixtures of fluoran compounds by the reaction of keto acids of formula (II) with a compound of formula (III) in the presence of a dehydrating condensation agent, wherein R1 and R2 independently represent hydrogen; an alkyl of 1-18 carbon, a secondary alkyl with respect to the carbon atom bonded to the nitrogen atom of 3-13 carbon atoms, a cycloalkyl of 4-8 carbon atoms or a phenyl, both of which may be substituted by at least one substituted selected from the group consisting of halogen atoms and alkyls having 1-4 carbon atoms, an aralkyl of 7-10 carbon atoms; or R1 and R2, together with the adjacent nitrogen atom from a heterocyclic ring; R3 is hydrogen, an alkyl of 1-4 carbon atoms, an alkoxy of 1-4 carbon atoms, a phenyl; a substituted phenyl or a halogen; R4 is an alkyl group of 1-18 carbon atoms, a carboxyalkyl of 1-18 carbon atoms, a carboxycycloalkyl of 4-8 carbon atoms, an alkylamino of 1-18 carbon atoms, a cycloalkylamino of 4-8 carbon atoms, a dialkylamino or dicyclo
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: October 21, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: James Philip Taylor, Michael Heneghan
  • Patent number: 6566302
    Abstract: A monophase solid solution comprising a plurality of color formers selected from the group consisting essentially of the fluoran type, phthalide type, phenoxazine type, phenothiazine type, rhodamine lactam type, leuco-auramine type, triphenylmethane type, spiropyran type, benzoxazine type, quinazoline type of color formers and mixtures thereof, preferably wherein the color forming materials are selected from the fluoran and phthalide type of color former and mixtures thereof.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: May 20, 2003
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: James Philip Taylor, Michael Heneghan
  • Patent number: 6217643
    Abstract: A color former composition which is composed of a mixture of the color formers 3-diethylamino-6-methyl-7-(2′,4′-dimethylanilino)fluoran and 3-dibutylamino-6-methyl-7-anilinofluoran in defined amounts. Further compositions contain mixtures of color formers including one or both of these fluoran compounds and the color formers 3-dibutylamino-6-methyl-7-anilinofluoran and/or 3-diethylamino-6-methyl-7-(3′-methylanilino)fluoran. Microcapsules containing the color former compositions can be prepared from a composition which also contains an organic solvent and can be used to prepare a pressure sensitive or thermal recording material. The mixture of color formers can provide a higher concentration in various organic solvents and/or can be used with less expensive solvents.
    Type: Grant
    Filed: February 7, 2000
    Date of Patent: April 17, 2001
    Assignees: ESCO Company, Yamamoto Chemicals, Inc.
    Inventors: Francis R. Kearney, Sean L. Daly, Darrel E. Cardy