Patents for C09B 48 - Quinacridones (562)
09/1990
09/11/1990US4956464 Preparation of dihydroquinacridones, quinacridones and quinacridonequinones
05/1990
05/22/1990CA1269380A1 Silanated quinacridone dyes and composite pigments
04/1990
04/18/1990EP0363759A2 Process for the manufacture of a possibly substituted quinacridone
04/11/1990EP0362703A2 Chinaoridone with selectively imparted triboelectric effects
01/1990
01/23/1990US4895949 Process for preparation of quinacridone solid solutions
12/1989
12/27/1989EP0348347A2 Process for the manufacture of solid solutions of quinacridones
11/1989
11/02/1989DE3813625A1 Process for the preparation of dihydroquinacridones, quinacridones and quinacridonequinones
05/1989
05/11/1989DE3736261A1 Process for the preparation of dihydroquinacridones, quinacridones and quinacridonequinones in the gas phase
05/03/1989EP0313965A2 Process for the manufacture of dihydroquinacridones, of quinacridones and of quinacridone quinones
03/1989
03/14/1989US4812568 Cyclization of a 2,5-di(phenylamino)-3,6-dihydroterephthalate
09/1988
09/24/1988WO1998041582A1 Water-soluble quinacridones
07/1988
07/26/1988US4760004 Electrophotographic photoreceptor
07/19/1988US4758665 Process for preparing high-hiding gamma-modification of unsubstituted linear transquinacridone
07/19/1988US4758664 Process for the preparation of linear quinacridones
05/1988
05/24/1988CA1237228A1 Manufacture of resin extended pigments
05/18/1988EP0267873A2 Thioquinacridones and isoquinacridones, process to manufacture them and their use
09/1987
09/09/1987EP0235647A2 Process for the manufacture of 6,13-dihydroquinacridones and quinacridones
08/1987
08/04/1987US4684408 Paints, enamels plastics, inks
12/1986
12/16/1986CA1215346A1 Borox dispersion milling of quinacridones
12/10/1986EP0204139A2 Process for the manufacture of linear quinacridones
04/1986
04/29/1986US4585864 Paints, enamels, plastics, inks
10/1985
10/22/1985US4548968 Manufacture of resin extended pigments
07/1985
07/10/1985EP0148022A2 Silane quinacridone dyes, composite pigments obtainable therefrom, and processes for preparing the same
05/1985
05/22/1985EP0142066A2 Covering gamma modification of a non substituted linear trans-quinacridone
01/1985
01/16/1985EP0131467A2 Borax dispersion milling of quinacridones
10/1984
10/23/1984US4478968 Manufacture of resin extended pigments
10/17/1984EP0122122A2 Manufacture of resin extended pigments
09/1984
09/04/1984US4469523 Alcohol and polyoxyalkylene glycol
07/1984
07/03/1984CA1170254A1 Dyes containing imidazolylmethylene groups
05/1984
05/29/1984US4451398 Dyes containing imidazolymethylene groups
03/1984
03/21/1984EP0103187A2 Light stable quinacridonequinone pigments
01/1984
01/17/1984US4426231 Light stable quinacridonequinone pigments
08/1983
08/23/1983US4400515 Quinacridone mixtures, process for their manufacture and their use as pigments
04/1983
04/19/1983CA1144928A1 Preparation of 1,2,3,4-tetrahydro-7-(phenyl)amino-9 (ioh) acridinone
04/19/1983CA1144927A1 Light stable quinacridonequinone yellow pigment
01/1982
01/12/1982US4310359 Pigment compositions
09/1981
09/02/1981EP0034725A2 Dyestuffs containing imidazolylethylene groups and their use
09/01/1981US4286998 Light stable quinacridonequinone yellow pigment
05/1981
05/13/1981EP0028445A2 Acridinones, their preparation and use; intermediates and their preparation
03/1981
03/24/1981US4258190 By reacting cyclohexanone and an oxalate ester to form a cyclohexanonecarboxylate intermediate
03/11/1981EP0024892A1 Process for preparing quinacridonequinone
07/1980
07/15/1980US4212975 Cyclization of 2,5-dianilinoterephthalic acid using polyphosphoric acid condensing agent, wet grinding
06/1980
06/25/1980EP0012432A1 Light-stable quinacridonequinone yellow pigment and post treatment to improve its dispersibility
05/1980
05/28/1980EP0011105A1 Bis-N-dialkylcarbamyl-quinacridones, process for their preparation and their application
04/1980
04/16/1980EP0009720A1 Mixtures of quinacridones, process for preparing them and their application as pigments
04/08/1980US4197404 Preparation of γ-quinacridone pigment
02/1980
02/05/1980CA1071208A1 Preparation of quinacridone using fecl3
11/1979
11/14/1979EP0005375A2 Process for preparing pigmentary gammaquinacridone by oxidation of beta-dihydroquinacridone in the presence of a nitrogenous quinacridone
08/1979
08/28/1979CA1061344A1 Quinacridone process
05/1979
05/02/1979EP0001613A1 Process for preparing linear trans-quinacridone in gamma-crystal modification
03/1979
03/20/1979CA1050984A1 Process for preparing gamma quinacridone from polyphosphoric acid and alcohol
07/1978
07/11/1978US4100162 Ring closure of 2,5-dianilinoterephthalic acid
07/11/1978US4099980 Process for producing gamma quinacridone solid solutions
03/1978
03/21/1978US4080355 Polyester and polyamide fibers
12/1977
12/20/1977US4064129 Cyclizing 2,5-diarylamino-terephthalic acid in ethylene glycol, acid catalyst
09/1977
09/20/1977US4049376 Dyed copolyesters and method of making
05/1977
05/24/1977US4025518 Alkalimetal chlorate in presence of vanadium pentoxide
05/17/1977US4024148 Crystalline form of quinacridone
04/1977
04/12/1977US4017496 Process for preparing pigmentary quinacridone in predetermined crystal form
04/05/1977US4015998 2,9-Dichloroquinacridone pigment compositions
08/1976
08/31/1976US3978062 Organic pigments
02/1976
02/24/1976US3940399 Process for the production of gamma quinacridone
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