| Patent Number |
Title Of Patent |
Date Issued |
| 7161007 |
Oxidation process for preparing quinacridone pigments |
January 9, 2007 |
| The present invention relates to a process of preparing quinacridone by oxidizing a 6,13-dihydroquinacridone salt corresponding to the quinacridone pigment with hydrogen peroxide as the oxidizing agent in the presence of 2,7-anthraquinone disulfonic acid as catalyst. The inventive pr |
| 7077898 |
Black pigment compositions |
July 18, 2006 |
| The present invention relates to black pigment compositions comprising (a) carbon black, and (b) a compound of the formula (MO.sub.3S).sub.m-Q(CH.sub.2).sub.k--X].sub.n, (I) wherein Q is a pigment or pigment intermediate radical selected from the group of anthraquinone, perinone, pe |
| 6989056 |
IR reflective pigment compositions |
January 24, 2006 |
| The present invention relates to IR reflective black pigment compositions comprising a halogenated copper phthalocyanine such as C.I. Pigment Green 7 and a perylenetetracarboxylic acid diimide such as C.I. Pigment Violet 29. The compositions are characterized by an IR reflection spectrum |
| 6951075 |
Pigment concentrates for coloring seeds |
October 4, 2005 |
| The present invention relates to the use of a pigment form or pigment concentrate comprising of an organic pigment, a growth-promoting additive, and optionally inorganic filler and/or an organic additive for coloring of seeds. Seeds colored by the dry pigment forms or pigment concentrate |
| 6902613 |
Preparation and use of nanosize pigment compositions |
June 7, 2005 |
| A mixture of an organic nanosize pigment comprising of from 50 to 99% by weight of the nanosize pigment and 1 to 50% by weight based of a low molecular weight naphthalene sulfonic acid formaldehyde polymer and its use as a particle growth and crystal phase director for the preparation of |
| 6869472 |
2,9-dichloroquinacridone pigment |
March 22, 2005 |
| A new high chroma, opaque gamma 2,9-dichloroquinacridone pigment specified by its particle shape and size and characterized by C.I.E color space values in masstone, and a process for its preparation is dislosed. The new gamma 2,9-dichloroquinacridone pigment is especially useful for colo |
| 6864371 |
Preparation of beta quinacridone pigments |
March 8, 2005 |
| A novel method for the preparation of a beta quinacridone pigment is described by the oxidation of 6,13-dihydroquinacridone in the presence of polyvinyl pyrrolidone, a catalyst and optionally a particulate quinacridone or particle growth inhibitor using hydrogen peroxide as the oxida |
| 6800127 |
Pigment preparations |
October 5, 2004 |
| The present invention relates to pigment preparations comprising polyamide particles with an average particle size of below 50 .mu.m and a pigment of an average particle size below 0.2 .mu.m. The inventive pigment preparations are useful for coloring high molecular weight material, like |
| 6688041 |
Pigment concentrates for coloring seeds |
February 10, 2004 |
| The present invention relates to the use of a pigment form or pigment concentrate comprising of an organic pigment, and optionally an inorganic filler and/or an organic additive for coloring of seeds. Seeds colored by the dry pigment forms or pigment concentrates show an homogeneous colo |
| 6406533 |
6,13-dihydroquinacridone derivatives |
June 18, 2002 |
| A 6,13-dihydroquinacridone derivative of formula I:wherein:Q represents a 6,13-dihydroquinacridone moiety of formula II; ##STR1##A and B each independently represent a substituent selected from H, F, Cl, C.sub.1 -C.sub.3 alkyl and C.sub.1 -C.sub.3 alkoxyM represents a metal cation, quaternar |
| 6375734 |
Diketo pyrrolo pyrrole pigment |
April 23, 2002 |
| An alpha-II form of a 1,4-diketo-3,6-di(4'-tertiary butyl phenyl)-2,5-dihydro pyrrolo[3,4-c]pyrrole pigment characterized by C.I.E color space values, particularly a high chroma value and yellow hue, in masstone, and a process for its preparation is disclosed. The 1,4-diketo-3,6-di(4 |
| 6323342 |
Gamma quinacridone pigment |
November 27, 2001 |
| A new gamma-I type quinacridone pigment characterized by C.I.E color space values in masstone, and a process for its preparation is disclosed. The new gamma quinacridone pigment is especially useful for coloring coating compositions, such as automotive paints, and plastics. |
| 6264733 |
Pigment particle growth and/or crystal phase directors |
July 24, 2001 |
| Pigment particle growth and/or crystal phase directors of the following formula:wherein:Q represents a pigment moiety;M represents a metal cation, quaternary N cation or H;X is an aromatic group, a cyclo-hetero aliphatic group with at least one 5 atom or 6 atom ring or a hetero aromatic grou |
| 6248165 |
Mixed crystals and solid solutions of 1,4-diketopyrrolopyrroles |
June 19, 2001 |
| Ternary solid solutions useful as pigments are disclosed. The ternary solid solutions result from incorporating a third component, which is a diketopyrrolopyrrole or quinacridone pigment, into the crystal lattice of the mixed crystal formed from equimolar amounts of two different dik |
| 6225472 |
6,13-dihydroquinacridone derivatives |
May 1, 2001 |
| A 6,13-dihydroquinacridone derivative of formula I:wherein:Q represents a 6,13-dihydroquinacridone moiety of formula II; ##STR1##A and B each independently represent a substituent selected from H, F, Cl, C.sub.1 -C.sub.3 alkyl and C.sub.1 -C.sub.3 alkoxyM represents a metal cation, quaternar |
| 6090196 |
Beta quinacridone pigment |
July 18, 2000 |
| A new beta quinacridone pigment characterized by masstone and tint reflection spectra, and a process for its preparation is disclosed. The new beta quinacridone pigment is especially useful for coloring coating compositions, such as automotive paints, and plastics. Also disclosed is a |
| 6063182 |
Stir-in pigment compositions |
May 16, 2000 |
| A stir-in pigment composition for coloring high-molecular-weight material, particularly coatings and ink systems, comprises 85 to 99.5 parts by weight of a pigment and 0.5 to 15 parts by weight of an additive comprising a vinylpyrrolidone polymer or copolymer. The stir-in pigment com |
| 6036766 |
Mixed crystals and solid solutions of 1,4-diketopyrrolopyrroles |
March 14, 2000 |
| Ternary solid solutions useful as pigments are disclosed. The ternary solid solutions result from incorporating a third component, which is a diketopyrrolopyrrole or quinacridone pigment, into the crystal lattice of the mixed crystal formed from equimolar amounts of two different dik |
| 6013127 |
Process for the preparation of quinacridone solid solutions |
January 11, 2000 |
| Solid solutions comprising quinacridone and 6,13-dihydroquinacridone are prepared by oxidation of a finely divided 6,13-dihydroquinacridone salt in an aqueous basic alcoholic medium using hydrogen peroxide as the oxidant. The solid solutions are useful as red organic high performance pig |
| 5997627 |
Pigment composition and effect coatings |
December 7, 1999 |
| The disclosure describes pigment compositions containing a small particle size porous filler and a pigment, and their use for preparing effect coating compositions which produce thin film finishes exhibiting strong lightness and color flop with a pronounced three dimensional effect. The |
| 5931997 |
Copper phthalocyanine pigment |
August 3, 1999 |
| A new copper phthalocyanine pigment characterized by masstone and tint reflection spectra is disclosed. The new copper phthalocyanine pigment is especially useful for coloring coating compositions, such as automotive paints, and plastics. Also disclosed is a new process for preparing a |
| 5856488 |
Oxidation process for preparing quinacridone pigments |
January 5, 1999 |
| The present invention relates to a process of preparing quinacridone pigments in their specific crystal forms by oxidizing a premilled 6,13-dihydroquinacridone corresponding to the quinacridone pigment in a basic, aqueous reaction medium utilizing hydrogen peroxide as the oxidizing a |
| 5851279 |
Copper phthalocyanine pigment |
December 22, 1998 |
| A new copper phthalocyanine pigment characterized by masstone and tint reflection spectra is disclosed. The new copper phthalocyanine pigment is especially useful for coloring coating compositions, such as automotive paints, and plastics. Also disclosed is a new process for preparing a |
| 5843220 |
Process for the preparation of a pigment composition |
December 1, 1998 |
| The present invention relates to a process for preparing a pigment composition whereby a mixture of an organic pigment and an inorganic filler is subjected to an air jet milling step. The inventive process is an environmentally friendly process which yields pigments having outstandin |
| 5840901 |
Oxidation process for preparing quinacridone pigments |
November 24, 1998 |
| The present invention relates to a process of preparing quinacridone by oxidizing a 6,13-dihydroquinacridone salt corresponding to the quinacridone pigment with hydrogen peroxide as the oxidizing agent. The inventive process is economical and environmentally friendly and yields high |
| 5820666 |
Organic stir-in pigments |
October 13, 1998 |
| The disclosure relates to the use of conditioned organic pigments as stir-in pigments in various applications. The conditioned pigments are prepared by wet-milling a pigment crude to a particle size of 0.1 to 9 .mu.m and a specific surface area in the range of from 6 to 35 m.sup.2 /g. |
| 5667580 |
Pigment compositions |
September 16, 1997 |
| The disclosure describes pigment compositions containing an organic pigment and a transparent filler having a mean particle size less than 10 .mu.m and a narrow particle size distribution; as well as methods of preparing the pigment compositions. The pigment compositions are useful for |
| 5648408 |
Organic stir-in pigments |
July 15, 1997 |
| The disclosure relates to the use of conditioned organic pigments as stir-in pigments in various applications. The conditioned pigments are prepared by wet-milling a pigment crude to a particle size of 0.1 to 9 .mu.m and a specific surface area in the range of from 6 to 35 m.sup.2 /g. |
| 5641351 |
Pigment compositions based on 3,6-di(biphenyl)1,4-diketo-pyrrolo[3,4c]-pyrrole |
June 24, 1997 |
| Heat-stable, red pigment compositions comprising a physical mixture of 1,4-diketo-3,6-di(4-biphenylyl)-pyrrolo [3,4 c]-pyrrole and a 2,9-dichloroquinacridone pigments, processes for preparing the pigment compositions and the use of the compositions for pigmenting high-molecular-weigh |
| 5584922 |
Stir-in organic pigments |
December 17, 1996 |
| Disclosed is a process for coloring high-molecular-weight coatings and ink systems which comprises uniformly dispersing an effective pigmenting amount of a stir-in pigment in the coating or ink system; wherein the stir-in pigment is an organic pigment crude consisting essentially of |
| 5565578 |
Process for the preparation of diaryldiketopyrrolopyrrole pigments |
October 15, 1996 |
| A process for conditioning diaryldiketopyrrolo[3,4-c]pyrrole pigments (DPP) and for preparing solid solutions having a DPP component are disclosed. The inventive processes involve dissolving the DPP in aqueous, basic DMSO, alone, or in mixture with additional components in the case of a |
| 5554217 |
Stir-in organic pigments |
September 10, 1996 |
| Disclosed is a process for coloring high-molecular-weight coatings and ink systems which comprises uniformly dispersing an effective pigmenting amount of a stir-in pigment in the coating or ink system; wherein the stir-in pigment is an organic pigment crude consisting essentially of |
| 5453151 |
Resinated 2,9-dimethylquinacridone |
September 26, 1995 |
| This invention relates to a resinated 2,9-dimethylquinacridone pigment, which is prepared by a process comprising (a) preparing an aqueous suspension containing a 2,9-dimethylquinacridone pigment, a mixture of water-soluble acid salts and a particle growth inhibitor, wherein the mixt |
| 5387281 |
Compositions based on 2,9-Dichloroquinacridone pigments |
February 7, 1995 |
| The present invention relates to a heat stable red pigment composition comprising a 2,9-dichloroquinacridone and a bis-(4, 5,6,7-tetrachloroisoindolin-1-on-3-ylidene)-phenylene-1,4-diamine pigment and a process for its preparation. The red pigment compositions are particularly useful |
| 5362780 |
Compositions based on 2,9-dichloroquinacridone pigments |
November 8, 1994 |
| A violet quinacridone pigment composition comprising a pigmentary 2,9-dichloroquinacridone pigment having a specific surface area below 75 m.sup.2 /g and a sulfonated indanthrone or copper phthalocyanine. The compositions have excellent fastness properties when used for pigmenting en |
| 5347014 |
Process for preparing 1,4-diketo-3,6-diphenylpyrrolo-[3,4-C]-pyrrole |
September 13, 1994 |
| A new platelet form of 1,4-diketo-3,6-diphenylpyrrolo-[3,4-C]-pyrrole which is prepared by heating 1,4-diketo-3,6-diphenylpyrrolo-[3,4-C]-pyrrole to elevated temperatures, preferably by recrystallization from an aromatic solvent or mixture of aromatic solvents, which is heated to an elev |
| 5298076 |
Carbazole dioxazine-pigmented plastics and coatings |
March 29, 1994 |
| A process utilizing carbazole dioxazine crude, having a specific surface area of from 2 to 20 m.sup.2 /g and an average particle size of 0.5 to 20 .mu.m, as a pigment to color high molecular weight organic materials is disclosed. The process is especially useful for producing multicolor |
| 5286863 |
Oxidation process for preparing quinacridone pigments |
February 15, 1994 |
| A process for preparing quinacridone pigments comprising oxidizing 6,13-dihydroquinacridone or derivatives thereof at elevated temperatures in the presence of a base, dimethyl sulfoxide medium and a quinone catalyst, drowning the resulting pigment solution to precipitate the quinacri |
| 5229515 |
Process for preparing modified .beta.-quinacridone pigment |
July 20, 1993 |
| A process for preparing a modified beta quinacridone polytype having identified color space values which comprises the steps of dry pre-milling beta phase quinacridone, deaggregating the pre-milled product in an alcohol-base medium and ripening the deaggregated product in the presence |
| 5223624 |
Modified gamma-quinacridone pigment |
June 29, 1993 |
| A new gamma quinacridone polytype having a yellowish-red color and a distinct X-ray diffraction pattern, said new form being prepared directly in high yield in pigmentary form by oxidation of 6,13-dihydroquinacridone in a basic dimethylsulfoxide medium. |
| 5199651 |
Grinding organic pigments |
April 6, 1993 |
| A process for conditioning organic pigments by grinding them in water in the presence of a grinding assistant, which comprises using as the grinding assistant an unsubstituted or phenyl-substituted aliphatic or cycloaliphatic 1,2-dihydroxy compound having 6 to 30 C atoms.The process give |
| 5194088 |
Process for conditioning organic pigments |
March 16, 1993 |
| A process for converting crude pigments into pigmentary form wherein the crude pigment is premilled, then contacted with a polar solvent at temperatures below 50.degree. C., with or without the presence of particle growth inhibitors, and finally isolated. |
| 5104918 |
Perylenetetracarboxylic acid diimides having long-chain radicals containing carbonyl groups |
April 14, 1992 |
| Perylene-3,4,9,10-tetracarboxylic acid diimides of the formula I ##STR1## in which R is a linear or branched alkylene, alkylenecycloalkylene or cycloalkylenealkylene radical which has at least 15 C atoms and which is interrupted by one or two --COO--, --OOC--, --CONH-- and/or --NHCO- |
| 5095056 |
2,9-dichloroquinacridone-pigmented engineering plastics and coatings |
March 10, 1992 |
| The use of 2,9-dichloroquinacridone having a surface area below 30 m.sup.2 /g as a pigment in engineering plastics and coating wherein said pigment exhibits outstanding heat stability and a unique red color in the resulting pigmented system. |
| 5084573 |
2,9-dichloroquinacridone in platelet form |
January 28, 1992 |
| 2,9-Dichloroquinacridone in platelet form having a length of 1-45 .mu.m, a width of 0.1-20 .mu.m and a thickness of 0.05-5 .mu.m; a process for the preparation thereof comprising conversion of the crude material in a polar solvent in the presence of a long chain thiol compound and a base |
| 5075195 |
Laser marking of plastics objects of any desired shape with special effects |
December 24, 1991 |
| A method of laser marking plastics objects of any desired shape, wherein the object to be marked contains a radiation-sensitive additive which effects a change in the light reflectance and is subjected to a laser with pulsed light such that the laser beam is deflected through a mask or |
| 5074918 |
Process for conditioning organic pigments |
December 24, 1991 |
| A process for conditioning organic pigments by milling or kneading said pigments in the presence of 0.05 to 25% by weight, based on the pigment to be milled, of at least one micronized wax.The process, in which the use of organic solvents may be dispensed with, yields in a single milling |
| 5063258 |
Coating compositions containing molybdenum disulfide |
November 5, 1991 |
| Coating compositions which do not contain metal powders and which contain, as coloring component, 0.001 to 30% by weight of at least one organic pigment and/or of a polymer-soluble dye and/or of a pearlescent pigment and 0.001 to 30% by weight of molybdenum disulfide, based on the coatin |
| 5034430 |
Novel compositions containing molybdenum disulfide |
July 23, 1991 |
| Compositions which can be processed to moulded articles which contain as high molecular weight organic material, a thermoplastic or a thermoset plastic or an elastomer and, as coloring component, 0.001 to 3.0% by weight of molybdenum disulfide, based on said high molecular weight org |
| 5030734 |
Solid solutions of azomethine pigments |
July 9, 1991 |
| Solid solutions consisting of at least two different compounds of the formula I ##STR1## in which A is one of the groups ##STR2## in which R and R.sup.1 independently of one another are hydrogen, halogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, X is halogen, Y and |
