Patents by Inventor Bernhard Medinger
Bernhard Medinger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5883167Abstract: A process for the preparation of diazo pigment mixtures, which comprises condensing 2 mol of an azocarboxylic acid chloride of formula ##STR1## with 1 mol of a mixture of diamines of formulae ##STR2## at a molar ratio of II:III:IV from 0-30:5-60:40-95,the condensation and isolation of the product obtained being carried out by customary methods.The diazo pigment mixtures so obtained are distinguished by high color strength and chroma.Type: GrantFiled: July 31, 1997Date of Patent: March 16, 1999Assignee: Ciba Specialty Chemicals CorporationInventors: Bernhard Medinger, Daniel Andrey
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Patent number: 5708188Abstract: The invention relates to mixed crystals of 1,4-diketopyrrolo?3,4-c!pyrroles, consisting of 1 mol each of two different compounds of formulae ##STR1## as well as single-phase solid solutions of two different compounds of formulae I and II, wherein the diketopyrrolopyrrole having the smaller geometrical constitution is present in an amount of 53 to 70 mol %. A and B are as defined in claim 1. The novel mixed crystals as well as the novel solid solutions are admirably suited for pigmenting organic material of high molecular weight.Type: GrantFiled: September 28, 1995Date of Patent: January 13, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Zhimin Hao, Abul Iqbal, Bernhard Medinger, Olof Wallquist
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Patent number: 5518539Abstract: The present invention relates to a process for the preparation of synergistic pigment mixtures by mixing solutions of at least two pigments solubilized by introducing carbamate groups, and subsequently precipitating the mixture in pigment form by subjecting said mixture to a thermal, photolytic or chemical treatment, either before or after incorporation in the substrate to be pigmented.Type: GrantFiled: November 18, 1994Date of Patent: May 21, 1996Assignee: Ciba-Geigy CorporationInventors: Zhimin Hao, Abul Igbal, John S. Zambounis, Bernhard Medinger
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Patent number: 5095122Abstract: Organic pigments selected from the diketopyrrolopyrrole, azo, isoindolinone and isoindoline series, which pigments consist of 50% by weight of platelets which are from 5 to 50 .mu.m long, 2 to 50 .mu.m wide and 0.01 to 5 .mu.m thick, with the proviso that the ratios of length:thickness and width:thickness must be at least 3.The pigments in platelet form are excellently suited to producing effect colorations in high molecular weight organic material and in cosmetic products.Type: GrantFiled: July 13, 1990Date of Patent: March 10, 1992Assignee: Ciba-Geigy CorporationInventors: Philippe Bugnon, Fritz Herren, Bernhard Medinger
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Patent number: 4892899Abstract: Composition of matter containing(a) a compound of the formula I ##STR1## in which A is one of the groups of the formulae ##STR2## in which B is --O--, --S--, --SO.sub.2 --, --N.dbd.N--, --CH.sub.2 --, --CH.dbd.CH--, ##STR3## --CONH--, --NHCONH--, or --CONHNHCO--, Q is --O-- or --NH-- and Z is --O-- or --S-- and R and R' are independently of each other hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or phenoxy, and(b) a compound of the formula II ##STR4## in which A' is as defined above for A, D is hydrogen, amino or a group of the formula III ##STR5## E is --O-- or --S--, T.sub.1, T.sub.2 and T.sub.3 independently of one another are chlorine or a group --ET', T' is a group of the formulae ##STR6## X.sup..sym. is H.sup..sym. or a group of the formulae M.sup.n.sym. /n or N.sup..beta. (R.sub.1)(R.sub.2)(R.sub.3)(R.sub.4), Mhu n.sym. is an n-valent metal cation, n is 1, 2 or 3, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently of one another hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.Type: GrantFiled: December 8, 1987Date of Patent: January 9, 1990Assignee: Ciba-Geigy CorporationInventors: Edward E. Jaffe, Jost von der Crone, Bernhard Medinger
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Patent number: 4889562Abstract: A composition containing an organic pigment, the particles of which pigment are provided with a tenacious, dense, highly crosslinked coating of ethyl cellulose.Pigment compositions of this kind are distinguished in particular by their color strength, by their excellent rheological properties in varnish and printing ink systems, by the high gloss of the finishes obtained therewith, and by the substantial non-deformation of the plastic mouldings pigmented therewith.Type: GrantFiled: June 6, 1988Date of Patent: December 26, 1989Assignee: Ciba-Geigy CorporationInventors: Philippe Bugnon, Bernhard Medinger
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Patent number: 4880472Abstract: Compositions containing an organic pigment coated with metal oxides, wherein the pigment particles are provided with a tenacious, dense, highly crosslinked coating of silica and/or alumina which is fixed by polycondensation of a silicate and/or aluminate with the free hydroxyl groups of a layer that densely coats the surface of the pigment particles and which consists substantially of partially hydrolyzed compounds of elements of group 4A or 4B of the Periodic Table selected from the group consisting of chelates of formula ##STR1## wherein R is methyl, ethyl, methoxy or ethoxy, R.sup.1 is methyl or ethyl and X is halogen or C.sub.1 -C.sub.4 alkoxy, and M is Ti or Sn, and of esters of formulaQ(OR.sup.2).sub.4 (III),wherein Q is an element of group 4A or 4B of the Periodic Table and R.sup.2 is C.sub.1 -C.sub.4 alkyl.Type: GrantFiled: June 6, 1988Date of Patent: November 14, 1989Assignee: Ciba-Geigy CorporationInventors: Philippe Bugnon, Arnold Grubenmann, Bernhard Medinger, Jean Schaefle
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Patent number: 4865650Abstract: Composition of matter containing:(a) a compound of the formula I ##STR1## in which A is one of the groups of the formulae ##STR2## in which B is --O--, --S--, --SO.sub.2 --, --N.dbd.N--, --CH.sub.2 --, --CH.dbd.CH--, --O--CH.sub.2 --O-- ##STR3## --CONH--, --NHCONH-- or --CONHNHCO--, Q is --O' or --NH' and Z is --O-- or --S-- and R and R' are independently of each other hydrogen, halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or phenoxy, and (b) a compound of the formula II ##STR4## in which X.sup..sym. is H.sup..sym. or a group of the formulae ##EQU1## or N.sup..sym. (R.sub.1) (R.sub.2) (R.sub.3) (R.sub.4), M.sup.n.sym. is an n-valent metal cation, n is 1, 2 or 3, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently of one another hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl, unsubstituted or C.sub.1 -C.sub.18 -alkyl-substituted phenyl or R.sub.3 and R.sub.4 together with the N atom form a pyrrolidine, imidazolidine, piperidine, piperazine or morpholine radical, or R.sub.Type: GrantFiled: December 16, 1987Date of Patent: September 12, 1989Assignee: Ciba-Geigy CorporationInventors: Jost von der Crone, Bernhard Medinger, Philippe Bugnon
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Patent number: 4808230Abstract: Compositions containing an organic pigment coated with metal oxides, wherein the pigment particles are provided with a tenacious, dense, highly crosslinked coating of silica and/or alumina which is fixed by polycondensation of a silicate and/or aluminate with the free hydroxyl groups of a layer of ethyl cellulose that densely coats the surface of the pigment particles.Pigment compositions of this kind are distinguished in particular by excellent rheological properties in varnish and printing ink systems, by high gloss of the finishes obtained therewith, and by substantial non-deformation of the plastic mouldings pigmented therewith.Type: GrantFiled: June 6, 1988Date of Patent: February 28, 1989Assignee: Ciba-Geigy CorporationInventors: Philippe Bugnon, Bernhard Medinger
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Patent number: 4764217Abstract: Composition containing(a) an isoindoline pigment of the formula I ##STR1## and (b) a compound of the formula II ##STR2## Pigment mixtures of this kind, in particular when used in paints, are distinguished in particular by increased tinctorial strength and high lustre and especially by improved rheology.For the definition of the substituents and symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4, Q, X, Y and Z, see claim 1.Type: GrantFiled: December 7, 1987Date of Patent: August 16, 1988Assignee: Ciba-Geigy CorporationInventors: Jost von der Crone, Bernhard Medinger, Philippe Bugnon
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Patent number: 4692189Abstract: A composition comprising(a) an indanthrone blue pigment of formula I ##STR1## and (b) a sulfonated indanthrone blue derivative of formula II ##STR2## wherein X.sup..sym. is H.sup..sym. or a group of the formula M.sup.n.sym. /n or N.sup..sym. (R)(R.sub.1)(R.sub.2)(R.sub.3), M is a monovalent, divalent or trivalent metal cation, n is 1, 2 or 3, each of R, R.sub.1, R.sub.2 and R.sub.3 is independently hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.6 cycloalkyl, phenyl or phenyl which is substituted by C.sub.1 -C.sub.18 alkyl, or R.sub.2 and R.sub.3, together with the linking nitrogen atom, are a pyrrolidine, imidazoline, piperidine, piperazine or morpholine radical, or R.sub.1, R.sub.2 and R.sub.3, together with the linking nitrogen atom, are a pyrrole, pyridine, picoline, pyrazine, quinoline or isoquinoline radical, and m is a value from 0.2 to 3.When used in varnishes, pigment mixtures of this kind are distinguished in particular by increased color strength, improved rheology and high gloss.Type: GrantFiled: July 21, 1986Date of Patent: September 8, 1987Assignee: Ciba-Geigy CorporationInventors: Fridolin Babler, Edward E. Jaffe, Bernhard Medinger
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Patent number: 4310483Abstract: A process for producing a granulate of difficultly fusible additives for plastics, particularly of pigments, by thermal tumbling granulation, which process comprises mixing the additive in powder form with a granulating auxiliary which softens between 30.degree. and 200.degree. C. and which has a particle size of 0.1-2.0 mm; and subjecting this mixture to a gentle rotary motion, with heating by means of a source of heat being simultaneously applied at least until softening of the granulating auxiliary commences.Type: GrantFiled: August 3, 1979Date of Patent: January 12, 1982Assignee: Ciba-Geigy CorporationInventors: Werner H. Dorfel, Bernhard Medinger, Eduard Troxler
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Patent number: 4049615Abstract: A process for the distortion-free dope coloration of polyolefins with organic pigments, wherein the organic pigment is coated with a melamine-formaldehyde resin which is then cured.Type: GrantFiled: February 19, 1976Date of Patent: September 20, 1977Assignee: Ciba-Geigy CorporationInventors: Anton Elsener, Hans Harald Gehrt, Bernhard Medinger, Volkhard Wiese
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Patent number: RE35009Abstract: Organic pigments selected from the diketopyrrolopyrrole, azo, isoindolinone and isoindoline series, which pigments consist of .Iadd.at least .Iaddend.50% by weight of platelets which are from 5 to 50 .mu.m long, 2 to 50 .mu.m wide and 0.01 to 5 .mu.m thick, with the proviso that the ratios of length:thickness and width:thickness must be at least 3.The pigments in platelet form are excellently suited to producing effect colorations in high molecular weight organic material and in cosmetic products.Type: GrantFiled: October 28, 1993Date of Patent: August 1, 1995Assignee: Ciba-Geigy CorporationInventors: Philippe Bugnon, Fritz Herren, Bernhard Medinger