Quinacridone Pigment Or Derivative Patents (Class 106/497)
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Patent number: 5472496Abstract: The present invention relates to novel solid solutions which comprise a quinacridonequinone component, a pyrrolo[3,4-c]pyrrole component and a third component which is a 2-anilinoacridone, a 5,6,7,8-tetrahydro-2-anilinoacridone, 2-phenoxyacridone, a 5,6,7,8-tetrahydro-2-phenoxyacridone or a mixture thereof. The solid solutions are three component solid solutions which consist of the components identified above or are four component solid solutions which additionally contain a quinacridone component. Pigment compositions containing the disclosed solid solutions and a method of pigmenting high molecular weight organic material with the solid solutions are also disclosed.Type: GrantFiled: August 11, 1994Date of Patent: December 5, 1995Assignee: Ciba-Geigy CorporationInventors: Shivakumar B. Hendi, Lindsay Kilmurry, Edward E. Jaffe
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Patent number: 5453151Abstract: 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 mixture of water-soluble acid salts consists essentially of from about 50 to about 95 parts by weight of a water-soluble resin acid salt, and from about 5 to about 50 parts by weight of a water-soluble salt of a napthenic acid or a dimeric acid, or a mixture thereof, (b) precipitating the mixture of acid salts from the suspension in the form of insoluble salts and (c) isolating the resinated 2,9-dimethylquinacfidone pigment from the suspension. The resinated 2,9-dimethylquinacridone pigment possesses excellent dispersability, color strength, saturation and heat stability. It is especially useful for coloring plastics, coatings and inks.Type: GrantFiled: January 25, 1994Date of Patent: September 26, 1995Assignee: Ciba-Geigy CorporationInventor: Fridolin Babler
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Patent number: 5387281Abstract: 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 for pigmenting engineering plastics.Type: GrantFiled: December 1, 1993Date of Patent: February 7, 1995Assignee: Ciba-Geigy CorporationInventors: Fridolin Babler, Charles G. Orange
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Patent number: 5383966Abstract: The present invention relates to a process for conditioning quinacridone pigments by(a) preparing an aqueous slurry of a crude quinacridone;(b) thoroughly mixing the aqueous slurry with about 0.3 to about 2.9 parts by weight, relative to the quinacridone, of at least one C.sub.1 -C.sub.12 alkyl ester of a C.sub.7 -C.sub.12 aromatic carboxylic acid at a temperature of between about 70.degree. C. and about 200.degree. C.;(c) hydrolyzing the alkyl ester used in step (b); and(d) collecting the quinacridone pigment.Type: GrantFiled: September 15, 1993Date of Patent: January 24, 1995Assignee: Miles Inc.Inventor: Daphne R. Johnson
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Patent number: 5378274Abstract: Disclosed herein are a color filter wherein an organic pigment is comprised of primary particles having an average particle size of 20 to 200 nm and a particle size distribution within .+-.35 nm and said organic pigment has a color difference of 5 or less when it is subjected to exposure at an illuminance of 100,000 lux or more for 100 hours or more under the condition of a surface temperature at 50.degree. C.; a color filter wherein the film of coloring matter in green has a ratio (T.sub.485 /T.sub.610) of the transmittance of 485 nm (T.sub.485) to that of 610 nm (T.sub.610 ) of 3.5 or less, the maximum transmittance of the film of coloring matter in green is 60% or more and said maximum transmittance is assigned a wavelength of 540 to 550 nm; and a color filter using a specific organic pigment as each of red, green and blue pigments.Type: GrantFiled: October 19, 1993Date of Patent: January 3, 1995Assignee: Idemitsu Kosan Co., Ltd.Inventors: Seiichiro Yokoyama, Motoharu Ishikawa, Yoshio Hiroi, Nobuaki Watanabe
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Patent number: 5368641Abstract: A process for the preparation of 2,9-dimethylquinacridone pigments or mixed crystal pigments or mixtures of 2,9-dimethylquinacridone and quinacridones which in the two outer fused benzene rings can be substituted, characterized by the form of their crystalline particles having an average ratio of length to width of <2:1 and an average particle size of <0.4 .mu.m, by adding to the solution of 2,9-dimethylquinacridone before or during the finishing of the corresponding crude quinacridones of the quinacridones mentioned in water or solvent mixtures at temperatures from about 60.degree. to about 200.degree. C., in each case a compound of the general formula (I) ##STR1## in an amount of about 1 to 20% by weight, in which Q is a quinacridone radical which is unsubstituted or substituted, Y is an --NR.sup.4 R.sup.5 group or the radical of a five-, six- or seven-membered heterocycle which contains one to three hetero atoms and can be substituted, R and R' are hydrogen or alkyl, and R.sup.1 to R.sup.Type: GrantFiled: December 22, 1992Date of Patent: November 29, 1994Assignee: Hoechst AGInventors: Erwin Dietz, Adolf Kroh
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Patent number: 5348580Abstract: Pigment compositions comprisinga) at least one organic pigment selected from the group consisting of diketopyrrolopyrroles, azo pigments quinacridones, quinophthalones, phthalocyanines, indanthrones, flavanthrones, pyranthrones, anthraquinones, perylenes, dioxazines, perinones, thioindigo, isoindolines isoindolinones and metal complexes andb) 0.01 to 100% by weight, based on the pigment, of a condensation or addition polymer, the recurring molecular unit of which contains at least one radical containing a nitroxyl or hydroxylamino group or is substituted by a side group containing a nitroxyl or hydroxylamino group, and copolymers thereof with one another or with nitroxyl- or hydroxylamine-free components.These pigment compositions are distinguished by outstanding resistance to light and weathering.Type: GrantFiled: August 25, 1993Date of Patent: September 20, 1994Assignee: Ciba-Geigy CorporationInventor: Laurent Chassot
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Patent number: 5346545Abstract: Pigment compositions comprisinga) at least one organic pigment chosen from the group comprising azo pigments, quinacridones, phthalocyanines, indanthrones, flavanthrones, pyranthrones, anthraquinones, perylenes, dioxazines, perinones, thioindigo, isoindolines, isoindolinones and metal complexes andb) 1 to 100% by weight, based on the pigment, of a nitroxyl compound consisting of at least one unsubstituted or substituted 5-, 6- or 7-membered heterocyclic ring containing a divalent group of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are methyl, ethyl or phenyl, or together form a 4- to 12-membered aliphatic ring,L is an aromatic radicaland Y is O.,or of an acid addition salt thereof.These pigment compositions are distinguished by an outstanding resistance to light and weathering.Type: GrantFiled: March 5, 1993Date of Patent: September 13, 1994Assignee: Ciba-Geigy CorporationInventor: Laurent Chassot
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Patent number: 5336309Abstract: The invention provides a flaky pigment comprising particles of a flaky substrate and particles of a pigment or dye, whereby said flaky pigment is in the form of an ordered mixture. The invention also involves preparation of the pigment by a process comprising subjecting said substrate and said pigment or dye to high speed stirring in the absence of a liquid medium.Type: GrantFiled: February 5, 1993Date of Patent: August 9, 1994Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Tamio Noguchi, Masahiko Yazawa
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Patent number: 5318626Abstract: A process for converting a 2,9-dimethylquinacridone compound into a pigment, which comprises pouring a solution of a crude 2,9-dimethylquinacridone compound in sulfuric acid into continuously flowing water to form a fine precipitate, recovering said precipitate by filtration, washing it with water, adding it to a lower alcohol having 1 to 4 carbon atoms and heating the resultant mixture to 60.degree.-200.degree. C.Type: GrantFiled: June 22, 1993Date of Patent: June 7, 1994Assignee: Toyo Ink Manufacturing Co., Ltd.Inventors: Hitoshi Maki, Shigeki Kato
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Patent number: 5300148Abstract: Pigments (P) obtainable by cationizing desolubilization of (L) the colored leuco form of sulphur dyes and standardization of the desolubilized products and their use, in particular in printing inks.Type: GrantFiled: April 16, 1992Date of Patent: April 5, 1994Assignee: Sandoz Ltd.Inventors: Manuel J. Domingo, Rolf Hasler, Tibor Robinson, Viktor Sanahuja
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Patent number: 5286863Abstract: 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 quinacridone pigment and isolating the desired quinacridone product.Type: GrantFiled: December 18, 1991Date of Patent: February 15, 1994Assignee: Ciba-Geigy CorporationInventors: Fridolin Babler, Edward E. Jaffe
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Patent number: 5281269Abstract: Aqueous processes for the preparation of a new beta quinacridone modification possessing a magenta color having C.I.E. color space values in masstone of L=33-36, A=34-40 and B=8-15 starting with the crude pigment and comprising several milling and alternative deaggregation and recrystallization steps, the latter being facilitated at elevated temperatures aided by the presence of base and minor amounts of crystal growth auxiliaries, and the beta quinacridone modification having the indicated C.I.E. color space values.Type: GrantFiled: September 14, 1992Date of Patent: January 25, 1994Assignee: Ciba-Geigy CorporationInventors: James B. Ganci, Shivakumar B. Hendi, Walter C. Zukowski
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Patent number: 5271759Abstract: Pigment compositions comprisinga) at least one organic pigment,b) 0.05 to 10% by weight, based on the organic pigment a), of at least one modified organic pigment of formula ##STR1## wherein A is the radical of an organic pigment, X is H, Na or K and m is an integer from 0.05 to 3, andc) 0.05 to 10% by weight, based on the organic pigment a), of at least one polymeric ammonium salt having an average molecular weight from 500 to 2 500 000 and which is soluble in water or a lower alkanol.These pigment compositions have excellent suitability for the wrap-free pigmenting of polyolefins and, when incorporated in paint systems and printing inks, exhibit excellent rheology.Type: GrantFiled: May 1, 1992Date of Patent: December 21, 1993Assignee: Ciba-Geigy CorporationInventors: Gary Wooden, Olof Wallquist
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Patent number: 5269840Abstract: Colorant clusters comprising an aggregation of a plurality of grains of sol-derived material and colorant. The clusters are particularly useful as pigments in liquid compositions, e.g., paints and inks, for forming coatings that are retroreflective immediately upon drying. Also, a process for preparing such colorant clusters comprising admixing colorant in a binder sol to yield a pigment sol and then removing liquid medium from the pigment sol to yield the clusters. Also, a coating composition comprising retroreflective elements, a vehicle, and the aforementioned colorant clusters. After application of the composition to a substrate, the resultant coating is immediately retroreflective upon drying.Type: GrantFiled: February 4, 1992Date of Patent: December 14, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Geoffrey P. Morris, Chester A. Bacon, Jr., Wallace K. Bingham
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Patent number: 5264032Abstract: Pigment preparation essentially comprisinga) at least one pigment from the class of azo, anthrapyrimidine, anthanthrone, quinacridone, perinone, diketopyrrolopyrrole, dioxazine, flavanthrone, indanthrone, isoindolinone, isoviolanthrone, perylene, phthalocyanine, pyranthrone or thioindigo pigments or a mixture of pigments belonging to various classes, andb) at least one dispersant of the formula (I) ##STR1## in which P, independently of the pigments mentioned in a), is a radical of an anthanthrone azo, quinacridone, perinone, diketopyrrolopyrrole, dioxazine, indanthrone, perylene, phthalocyanine or thioindigo pigment,R.sup.1 and R.sup.2, independently of one another, are hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.Type: GrantFiled: October 21, 1992Date of Patent: November 23, 1993Assignee: Hoechst AGInventors: Erwin Dietz, Manfred Urban
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Patent number: 5236498Abstract: This invention relates to quinacridone solid solutions containing(a) 95% to 5% by weight of 2,9-dimethoxyquinacridone, and (b) 5% to 95% by weight of 2,9-dichloroquinacridone, characterized by X-ray diffraction patterns that are different from the sum of the X-ray diffraction patterns of the individual quinacridone components. The invention further relates to the use of such solid solutions for pigmentation of fibers, plastics, coatings, printing inks, and the like.Type: GrantFiled: November 26, 1991Date of Patent: August 17, 1993Assignee: Miles Inc.Inventors: Charles G. Zaloum, Michael J. Greene
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Patent number: 5223624Abstract: 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.Type: GrantFiled: August 22, 1991Date of Patent: June 29, 1993Inventors: Fridolin Babler, Edward E. Jaffe
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Patent number: 5207829Abstract: Pigment preparations whose pigment portion is composed essentially of organic pigments and of pigment additives of the formula I ##STR1## in which P is a radical of an organic pigment and X in the methylene groups of the lactam ring is hydrogen, C.sub.1 -C.sub.4 -alkyl, phenyl, hydroxyl, NR.sup.1 R.sup.2 or COOM, m is an integer from 3 to 20 and n can have a value from 0.1 to 4, are suitable for pigmenting high-molecular-weight organic materials in solvent-borne as well as aqueous systems.The pigment preparations have high flocculation stability and good rheological properties.Type: GrantFiled: December 4, 1991Date of Patent: May 4, 1993Assignee: Hoechst AktiengesellschaftInventors: Wolfgang Schwab, Erwin Dietz
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Patent number: 5194088Abstract: 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.Type: GrantFiled: July 8, 1991Date of Patent: March 16, 1993Assignee: Ciba-Geigy CorporationInventors: Fridolin Babler, Edward E. Jaffe
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Patent number: 5190586Abstract: Disclosed are pigment composite particles which are superior in water resistance, weather resistance, thermal stability and hardness. The pigment composite particles are prepared by suspension-polymerizing an aqueous suspension comprising(a) a pigment paste comprising pigment and a pigment grinding resin having a hydrophilic group of at least 0.2 mmol/g,(b) a polymerizable monomer and(c) a polymerization initiator.Type: GrantFiled: November 28, 1990Date of Patent: March 2, 1993Assignee: Nippon Paint Co., Ltd.Inventors: Katsumi Mizuguchi, Masanori Ohiwa, Keizou Ishii, Shinichi Ishikura
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Patent number: 5145524Abstract: Surface modification of a variety of pigments, particularly quinacridone pigments, and the pigments resulting therefrom whereby the pigment is treated with a poly(vinyl lower alkyl ether) and, optionally, with a dispersion-improving derivative of the primary pigment resulting in compositions exhibiting enhanced performance in automotive and other finish systems. The surface treatment also improves flow properties of the pigment in the aqueous phase of processing leading to higher solids content for direct application in waterborne systems.Type: GrantFiled: February 20, 1991Date of Patent: September 8, 1992Assignee: Ciba-Geigy CorporationInventor: James B. Ganci
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Patent number: 5137576Abstract: Quinacridones having selectively adjusted triboelectric effects, which quinacridones contain about 0.05% to 100 percent by weight of triboelectrically active compounds of the general formula IQ--A--Y].sub.n (I),in which Q is a quinacridone radical which is unsubstituted or substituted by halogen atoms, alkyl, alkoxy H.sub.2 N--CO--, alkyl--NH--CO-- or (alkyl).sub.2 N--CO groups, A is a direct bond or --O--, --S--, --NR.sup.1 --, --CO--, --SO.sub.2 --, --CR.sup.2 R.sup.3 -- or arylene and Y is an --NR.sup.4 R.sup.5 group or a five-, six- or seven-membered heterocycle which contains one to three heteroatoms from the series comprising nitrogen and/or oxygen and/or sulfur and which can be substituted by alkyl, alkoxy, hydroxyphenyl, halogen, --CN, --COOH, --CO-- NRR', --SO.sub.2 --NRR', hydroxyalkyl or alkylaminoalkyl, in which R and R' together with the nitrogen atom can be a heterocycle, R and R' are hydrogen atoms or alkyl and R.sup.1 to R.sup.Type: GrantFiled: September 28, 1989Date of Patent: August 11, 1992Assignee: Hoechst AktiengesellschaftInventors: Hans-Tobias Macholdt, Adolf Kroh, Alexander Sieber, Erwin Dietz
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Patent number: 5116712Abstract: A color toner, comprising a binder resin and a colorant, wherein the colorant comprises organic pigment particles treated with an isocyanic ester or a silicon-containing compound.Type: GrantFiled: April 11, 1990Date of Patent: May 26, 1992Assignee: Canon Kabushiki KaishaInventors: Tatsuya Nakamura, Hiromi Mori, Masoyoshi Shimamura, Reiko Morimoto
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Patent number: 5112404Abstract: The invention relates to readily dispersible pigment formulations which are stable to flocculation and are used for pigmenting naturally occurring and synthetic materials, preferably paints and printing inks, plastics and lacquers, in particular stoving lacquers. The pigment formulations contain compounds of the general formula (I) ##STR1## in which Q.sup.1, Q.sup.2 and Q.sup.3 each denote --X--A, --OR.sup.1, --SR.sup.1, halogen, --NR.sup.2 R.sup.3 or a radical Q which is built up from up to 15 trivalent groups (Ia) such that in each case one group (Ia) is bonded via W to a free valency of the next group (Ia) or to the triazine ring of (I) and the other free valencies are bonded to --X--A, --O--R.sup.1, halogen or --NR.sup.2 R.sup.3, at least one radical --X--A being present in (I), and A stands for an aromatic system with 2 to 6 rings and at least 9 ring atoms, or stands for a group of 2 to 3 aromatic ring systems, bonded via O, S, CO, SO, SO.sub.2 or C.sub.1 -C.sub.Type: GrantFiled: April 4, 1990Date of Patent: May 12, 1992Assignee: Hoechst AktiengesellschaftInventors: Andreas Sommer, Erwin Dietz, Manfred Urban
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Patent number: 5108509Abstract: A pigment is formed in an aqueous slurry. A mixture of the pigmented slurry and a vehicle is subjected to high speed, high shear mixing action. The water is forced out of the solid pigment and replaced by the vehicle forming bead-like spherical conglomerates. The conglomerates grow into clusters in the dispersing phase during the mixing process. The clusters are filtered from the dispersing water phase forming a flushed pigment which is used for dispersion in ink systems.Type: GrantFiled: May 8, 1990Date of Patent: April 28, 1992Assignee: Roma Color, Inc.Inventors: John S. Booth, Edward W. Makuch
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Patent number: 5084573Abstract: 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; and the pigmentary use of said platelets.Type: GrantFiled: July 13, 1990Date of Patent: January 28, 1992Assignee: Ciba-Geigy CorporationInventors: Fridolin Babler, Edward E. Jaffe
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Patent number: 5084100Abstract: A dispersion milling process for reducing the particle size of quinacridone pigments wherein the quinacridone is milled in the presence of hydrated aluminum sulfate and, as a crystallizing solvent, a lower alkyl ester of a C.sub.2 -C.sub.10 dibasic carboxylic acid.Type: GrantFiled: December 20, 1990Date of Patent: January 28, 1992Assignee: Ciba-Geigy CorporationInventor: Donald L. Bauman
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Patent number: 5082498Abstract: Solid pigment formulations containing from 70 to 97% by weight, based on the total weight of the formulation, of one or more pigments and also from 3 to 30% by weight, based on the total weight of the formulation, of at least one surfactant which is an adduct of ethylene oxide and optionally propylene oxide with ethylenediamine, the proportion of ethylene oxide being from 46 to 100% by weight, based on the total weight of ethylene oxide and propylene oxide in the adduct, and the adduct having an average molecular weight of from 5000 to 40,000, are useful for pigmenting printing ink and gloss paint compositions.Type: GrantFiled: May 29, 1990Date of Patent: January 21, 1992Assignee: BASF AktiengesellschaftInventors: Walter Kurtz, Karl Muench, Joachim Kranz, Horst Belde
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Patent number: 5069719Abstract: Disclosed is an organic solvent based ink composition which contains a specific dye and an organic solvent, especially an alcohol or a glycol and which has excellent stability with time and good writing properties. The organic solvent based ink composition comprises a dye and an organic solvent, wherein the dye is represented by ##STR1## wherein D represents a residue of an azo or anthraquinone dye which does not have a sulfone group and a carboxyl group, X represents an oxygen atom or a methylene group, Y represents a C.sub.2 -C.sub.12 alkyl group, a C.sub.2 -C.sub.4 hydroxyalkyl group, a C.sub.2 -C.sub.12 alkoxyalkyl group, a polybutyral residue, a polyvinyl alcohol residue, a phenol resin residue, or a cellulose residue and m shows 0 or 1.Type: GrantFiled: December 21, 1990Date of Patent: December 3, 1991Assignee: Orient Chemical Industries, Ltd.Inventor: Takashi Ono
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Patent number: 5041163Abstract: A pigment is formed in an aqueous slurry. A mixture of the pigmented slurry and a vehicle is subjected to high speed, high shear mixing action. The water is forced out of the solid pigment and replaced by the vehicle forming bead-like spherical conglomerates. The conglomerates grow into clusters in the dispersing phase during the mixing process. The clusters are filtered from the dispersing water phase forming a flushed pigment which is used for dispersion in ink systems.Type: GrantFiled: June 8, 1989Date of Patent: August 20, 1991Assignee: Roma Color, Inc.Inventors: John S. Booth, Edward W. Makuch
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Patent number: 4986852Abstract: Pigments of the formula I ##STR1## where A is a five- or six-membered aromatic fused or unfused heterocycle which contains one to three hetero atoms from the series consisting of nitrogen and/or oxygen and/or sulfur and which is bonded to the methylene group via a carbon atom, R.sub.1 and R.sub.2 are each hydrogen, alkyl C.sub.1 -C.sub.4, alkylene C.sub.2 or aryl, and together R.sub.1 and R.sub.2 may also be an aliphatic or aromatic ring, R.sub.3 is hydrogen, alkyl C.sub.1 -C.sub.4 hydroxylkyl C.sub.1 -C.sub.3 or alkylene C.sub.2, P is the radical of a polycyclic pigment or a radical of a mix-crystal of polycyclic pigments, and n is a number from 0.0001 to 0.Type: GrantFiled: December 20, 1988Date of Patent: January 22, 1991Assignee: Hoechst AktiengesellschaftInventors: Erwin Dietz, Gustav Kapaun, Michael Kappert, Frank Prokschy, Adolf Kroh, Manfred Urban
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Patent number: 4970248Abstract: Azine pigment which has one of the possible tautomeric forms of the formula I ##STR1## and which is present in its c-crystalline modification, which is characterized by the interplanar spacings (relative intensity) 3.29 (100); 3.60 (24); 3.73 (28); 4.64 (28); 6.23 (31); 6.97 (23); 8.05 (67); 9.36 (34); 12.63 (67); 13.96 (32) and 16.35 (30).This pigment is excellently suitable for coloring high-molecular weight organic material, in particular automobile paints.Type: GrantFiled: May 22, 1989Date of Patent: November 13, 1990Assignee: Ciba-Geigy CorporationInventor: Martin Tanner
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Patent number: 4881980Abstract: Pigments of the quinacridonequinone series consisting of 98-20 mol percent of a quinacridonequinone of the general formula (1) ##STR1## in which R denotes a hydrogen or chlorine atom or a methyl or carbonamide group and m and n are 1 or 2, and 1-65 mol percent of a quinacridone of the general formula (2) ##STR2## in which R, m and n have the abovementioned meaning, and 1-15 mol percent of one or two acridone derivatives of the general formulae (3) and/or (4) ##STR3## in which X denotes O or NH and R can be identical or different and, like m and n, has the abovementioned meaning, the added compounds of the general formulae (2), (3) and/or (4) being predominantly incorporated into the crystal lattice if the quinacridonequinone of the general formula (1), processes for their preparation and their use for coloring synthetic and naturally occurring materials.Type: GrantFiled: July 9, 1987Date of Patent: November 21, 1989Assignee: Hoechst AktiengesellschaftInventors: Erwin Dietz, Frank Prokschy
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Patent number: 4872916Abstract: An aqueous pigment dispersion containing as the dispersing agent a phosphate ester salt having the general formula: ##STR1## wherein: R and R' are the same or different linear or branched alkyl groups of 2 to 12 carbon atoms;k and l are the same or different integers having a value of 1 or 2;x and y are the same or different integers having values of greater than 1 but less than 13; and,M is a cation selected from the group consisting of potassium, sodium and ammonium. The dispersing agent is especially useful to disperse azo type pigments. The resulting pigment dispersion exhibits improved stability.Type: GrantFiled: September 22, 1988Date of Patent: October 10, 1989Assignee: Sun Chemical CorporationInventor: Joseph A. Latosky
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Patent number: 4857646Abstract: A new beta quinacridone polytype having a magenta color and a distinct X-ray diffraction pattern, said new form preferably having an average particle size of about 0.2-0.8 .mu.m and being prepared by various wet milling or reflux procedures in alcohol-base systems.Type: GrantFiled: August 24, 1987Date of Patent: August 15, 1989Assignee: Ciba-Geigy CorporationInventor: Edward E. Jaffe
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Patent number: 4844742Abstract: Surface modification of a variety of pigments, particularly quinacridone pigments, and the pigments resulting therefrom whereby the pigment is treated with a solvent-free, basic, nitrogen-containing copolymer of the polyurethane series and with a dispersion-improving derivative of the primary pigment resulting in compositions exhibiting enhanced performance in automative and other finish systems.Type: GrantFiled: May 15, 1987Date of Patent: July 4, 1989Assignee: Ciba-Geigy CorporationInventor: Edward E. Jaffe
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Patent number: 4762568Abstract: A pigment composition contains a pigment and a dispersant. The dispersant is a phosphoric ester compound represented by the following general formula: ##STR1## wherein at least one of the three Rs is a residuum of a polyester chain containing as principal bonds thereof ester bonds of a polycarboxylic acid and a polyalcohol.Type: GrantFiled: August 12, 1987Date of Patent: August 9, 1988Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Michiei Nakamura, Hitoshi Takeuchi, Tetsujiro Takahashi, Yoshitake Kori, Minoru Takizawa, Takamitsu Shinoda, Shojiro Horiguchi
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Patent number: 4762569Abstract: The present invention relates to a easily dispersible pigment composition for non-aqueous vehicles, comprising 100 wt. parts of organic pigment or inorganic pigment and 0.5-15 wt. parts of tetracarboxylic acid diimid compound having the following formula [I], and a method for dispersing pigment in non-aqueous vehicle, comprising use of 0.5-15 wt. parts of the compound having the following formula [I] against 100 wt. parts of organic or inorganic pigment. ##STR1## In the formula [I], Q shows naphthaline radical or perylene radical having 4 carbonyl radicals at peri-positions and R.sup.1 and R.sup.2 show either the same or differently hydrogen atom or alkyl radical having 1-2 carbon atoms, and n is 2 or 3.Type: GrantFiled: August 7, 1987Date of Patent: August 9, 1988Assignee: Sanyo Color Works, Ltd.Inventors: Toshiyuki Miki, Mitsumasa Takeya
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Patent number: 4760004Abstract: Compounds of the formulae I, II and III ##STR1## in which R is --F, --Cl, --Br, C.sub.1 -C.sub.18 alkoxy, and n is the number 0, 1, 2 or 3, are suitable in particular for use as photoconductive substances.Type: GrantFiled: November 12, 1987Date of Patent: July 26, 1988Assignee: Ciba-Geigy CorporationInventors: Alain C. Rochat, Edward E. Jaffe, Jin Mizuguchi
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Patent number: 4760144Abstract: Process for preparing yellow shade modification of gamma quinacridone whereby the .gamma..sub.II form is converted to the .gamma..sub.I form (1) by milling in an alcohol and in the presence of a base or (2) by premilling the .gamma..sub.II form to the .gamma..sub.I form and then refluxing or milling the resulting .gamma..sub.I form in an alcohol in the presence of a base, the resulting product being a highly crystalline, bright, yellow shade, ready dispersable .gamma..sub.I quinacridone pigment.Type: GrantFiled: November 13, 1986Date of Patent: July 26, 1988Assignee: Ciba-Geigy CorporationInventor: Edward E. Jaffe
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Patent number: 4758665Abstract: A process for preparing the high-hiding form of the .gamma.-crystal modification of unsubstituted linear transquinacridone having improved tinctorial strength and producing a coating of higher gloss, which comprises carrying out (a) the known cyclization of 2,5-diphenylaminoterephthalic acid in highly concentrated polyphosphoric acid or in acid polyphosphoric acid ester to the quinacridone and/or (b) the known hydrolysis of the quinacridone melt obtained in (a) and/or (c) the known aqueous alkali extraction of the quinacridone obtained in (b) and/or (d) the known finishing of the quinacridone obtained in (a) in the presence of 0.5 to 10 percent by weight, based on quinacridone, of surface-active agents.Type: GrantFiled: November 13, 1986Date of Patent: July 19, 1988Assignee: Hoechst AktiengesellschaftInventors: Ernst Spietschka, Adolf Kroh
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Patent number: H564Abstract: Aqueous pigment concentrates are produced by a two-step milling process. The process comprisesa. pumping a crude with from about 12% to about 48% by weight of surfactant, based on pigment, and an amount of water sufficient to reduce the crude concentration to 10 to 50% by weight, based on the total mixture, andb. continuously pumping the blend of (a) through at least two shot mills in series containing between 50 and 90% by volume of a grinding media that has a size in the range of 0.1 to 1.5 mm diameter and then grinding until the particle size has been reduced to where the pigment dispersion has suitable tinctorial strength for use in inks and coatings.Type: GrantFiled: April 28, 1986Date of Patent: January 3, 1989Assignee: BASF CorporationInventors: Arthur H. Allen, III, Arthur R. Heuser, Richard J. Meyer, Judy B. Payne