US Patent No: 6,576,747

Number of patents in Portfolio can not be more than 2000

Processes for preparing dianthranilate compounds and diazopyridone colorants

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Abstract

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Disclosed is a process for preparing dianthranilate compounds which comprises (a) admixing reactants as follows: (1) a diol of the formula R.sub.1 (OH).sub.2, wherein R.sub.1 is an alkylene group having at least about 20 carbon atoms, and wherein the --OH groups are primary or secondary, (2) isatoic anhydride, present in an amount of at least, about 2 moles of isatoic anhydride per every one mole of diol, (3) a catalyst which is 1,4-diazabicyclo [2.2.2]octane, N,N,N',N'-tetramethylethylene diamine, or a mixture thereof, said catalyst being present in an amount of at least about 0.2 mole of catalyst per every one mole of diol, and (4) a solvent; and (b) heating the mixture thus formed to form a dianthranilate compound of the formula ##STR1## Also disclosed is a process for preparing diazopyridone colorants which comprises (I) preparing a dianthranilate compound by the aforementioned method, (II) reacting the dianthranilate compound with nitrosylsulfuric acid to form a diazonium salt, and (III) reacting the, diazonium salt with a pyridone compound to form a diazopyridone compound.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
XEROX CORPORATIONSTAMFORD, CT18614

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Banning, Jeffrey H Hillsboro, OR 160 1306
Carlini, Rina Mississauga, CA 161 1320
Duff, James M Mississauga, CA 124 2369
Gaynor, Roger E Oakville, CA 44 679
Liebermann, George Mississauga, CA 58 781
Mayo, James D Mississauga, CA 96 1944
Pereira, Tania Mississauga, CA 1 63
Robinson, Stephen G Burlington, CA 2 63

Cited Art Landscape

Patent Info (Count) # Cites Year
 
XEROX CORPORATION (8)
4,889,560 Phase change ink composition and phase change ink produced therefrom 292 1988
4,889,761 Substrates having a light-transmissive phase change ink printed thereon and methods for producing same 248 1988
5,006,170 Hot melt ink compositions 264 1989
5,372,852 Indirect printing process for applying selective phase change ink compositions to substrates 376 1992
5,621,022 Use of polymeric dyes in hot melt ink jet inks 251 1995
5,827,918 Phase change ink formulation using urea and urethane isocyanate-derived resins 59 1996
5,902,841 Use of hydroxy-functional fatty amides in hot melt ink jet inks 60 1997
5,919,839 Phase change ink formulation using an isocyanate-derived wax and a clear ink carrier base 89 1997
 
EASTMAN KODAK COMPANY (2)
4,734,349 Toners and yellow dye compounds used therein 20 1986
5,041,413 Yellow dye mixture for thermal color proofing 10 1990
 
BASF AKTIENGESELLSCHAFT (1)
4,994,564 Azo dyes with a diazo component of the 3-amino thiophene series and a coupling component of the pyridine, pyridone or pyrazole series 13 1988
 
Cassella Aktiengesellschaft (1)
4,247,456 Water-insoluble monoazo pyridone dye 19 1976
 
CIBA-GEIGY AG (1)
4,359,418 Amine salts of azo dyestuffs of the pyridone series 15 1981
 
HANSOL PAPER CO., LTD. (1)
5,929,218 Pyridone-based yellow monoazo dye for use in thermal transfer and ink compositions comprising same 12 1996
 
Montedison S.p.A. (1)
4,216,145 Water-insoluble mono-azo yellow dyes derived from 1-phenyl-3-aminopyrazoles 11 1977
 
Sandoz Ltd. (1)
5,037,964 Metal-free sulfo group-free basis disazo and trisazo compounds containing two different 6-hydroxypyrid-2-one coupling component radicals 13 1986
 
SUMITOMO CHEMICAL COMPANY, LIMITED (1)
4,644,058 Reactive pyridone azo dyes having both monochlorotriazinyl and vinylsulfone type reactive groups 12 1982

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
XEROX CORPORATION (63)
7,381,253 Multi-chromophoric azo pyridone colorants 0 2004
7,572,325 Ink carriers, phase change inks including same and methods for making same 1 2005
7,563,314 Ink carriers containing nanoparticles, phase change inks including same and methods for making same 3 2005
7,758,268 Hand held photochromic marking implement 0 2005
7,879,143 Polyalkylene materials 0 2006
7,811,368 Phase change inks containing colorant compounds 0 2007
7,812,140 Colorant compounds 1 2007
7,749,315 Phase change inks containing colorant compounds 1 2007
7,381,831 Colorant compounds 49 2007
7,677,713 Solid ink set incorporating naturally derived materials and processes thereof 2 2007
7,754,862 Multi-chromophoric AZO pyridone colorants 0 2007
8,791,202 Phase change ink compositions 0 2008
8,123,344 Ink carriers containing surface modified nanoparticles, phase change inks including same, and methods for making same 0 2008
8,029,861 Ink carriers containing low viscosity functionalized waxes, phase change inks including same, and methods for making same 0 2008
7,985,286 Solid inks with lower coefficient of friction 0 2008
7,811,741 Reverse write erasable paper 0 2009
7,732,581 Colorant compounds 0 2009
8,293,444 Purified polyester resins for toner performance improvement 0 2009
8,383,311 Emulsion aggregation toner composition 0 2009
8,449,095 Radiation curable solid ink compositions suitable for transfuse printing applications 0 2010
8,308,286 Curable phase change ink containing alkoxysilane monomer 0 2010
8,657,430 Curable phase change inks containing crystalline polyesters 0 2010
8,613,506 Curable phase change inks containing crystalline polyesters 0 2010
8,613,507 Curable phase change inks containing functionalized isosorbides 0 2010
8,343,715 Photochromic polyesters and methods of producing photochromic polyesters 0 2010
8,449,102 Curable solid inks for raised print applications and methods for using the same 0 2010
8,450,385 Urea-urethane gellant compositions with controlled molecular weight and methods of preparation 0 2010
8,651,849 Digitally prepared stamp masters and methods of making the same 0 2011
8,591,785 Digitally prepared stamp masters and methods of making the same 0 2011
8,459,788 Curable solid ink compositions comprising novel curable wax 0 2011
8,652,723 Toner particles comprising colorant-polyesters 0 2011
8,840,232 Phase change ink 0 2011
8,833,917 Solid ink compositions comprising crystalline-amorphous mixtures 0 2011
8,690,309 Print process for phase separation ink 0 2011
8,506,040 Solid ink compositions comprising crystalline-amorphous mixtures 2 2011
8,506,694 Phase separation ink 1 2011
8,500,896 Solid ink compositions comprising amorphous esters of tartaric acid 1 2011
8,465,579 Solid ink compositions comprising crystalline esters of tartaric acid 1 2011
8,372,189 Phase change inks and methods of making the same 3 2011
8,328,924 Phase change inks and methods of making the same 3 2011
8,308,859 Phase change ink components and methods of making the same 0 2011
8,287,632 Solid ink compositions comprising amorphous esters of citric acid 2 2011
8,714,723 Robust curable solid inks and methods for using the same 0 2011
8,772,416 Ink compositions containing isosorbide-capped amide gellant 0 2012
8,814,999 Phase change ink compositions comprising crystalline sulfone compounds and derivatives thereof 0 2012
8,741,040 Phase change ink compositions comprising aromatic ethers 0 2012
8,647,423 Phase change inks comprising fatty acids 0 2012
8,647,424 Phase change inks comprising inorganic nucleating agents 0 2012
8,784,547 Lightfast solid ink compositions 0 2012
8,714,724 Phase change inks containing novel synergist 0 2012
8,696,100 Phase change ink containing synergist for pigment dispersion 0 2012
8,758,494 Pigmented magenta and yellow phase change inks 0 2012
8,753,441 Bio-renewable phase change inks comprising recycled resin materials 0 2012
8,741,043 Bio-renewable fast crystallizing phase change inks 0 2012
8,591,640 Bio-renewable fast crystallizing phase change inks 0 2012
8,616,693 Phase change ink comprising colorants derived from plants and insects 0 2012
8,808,438 Amorphous materials for use in phase change inks 0 2013
8,551,236 Phase change inks comprising crystalline-amorphous mixtures 2 2013
8,827,393 Fluorescent phase change ink compositions 0 2013
8,747,535 Solid ink compositions comprising crystalline-amorphous mixtures 0 2013
8,741,044 Cycylohexyl-mannitol diketal derivatives as vehicle modifiers and gelators 0 2013
8,747,536 Phase change ink formulation including malic acid derivatives as amorphous materials 0 2013
8,815,000 Solid inks comprising liquid crystalline materials 0 2013

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