Patents by Inventor Hubertus Psaar
Hubertus Psaar 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).
-
Patent number: 5134113Abstract: Thermoreactive recording material contains, as developer, a mixture of an acidic-modified polymer of (meth)acrylonitrile and/or methacrylonitrile and a diphenol of the formula ##STR1## in which Y is, for example, a single bond, an alkylene or alkylidene radical, gives, on thermal printing, a dye which has a reduced tendency to sublime.Type: GrantFiled: June 29, 1990Date of Patent: July 28, 1992Assignee: Bayer AktiengesellschaftInventors: Gunter Klug, Hubertus Psaar, Siegfried Korte
-
Patent number: 5130442Abstract: Compounds of the formula ##STR1## in which R.sup.1 /R.sup.2 are alkyl, cycloalkyl, aralkyl or alkylene,R.sup.3 is alkyl, cycloalkyl or aralkyl,Z is alkylene,X is O orare highly suitable as color formers in recording materials based on acid developers. They give yellow or orange hues which have excellent sublimation and light fastness.Type: GrantFiled: October 31, 1990Date of Patent: July 14, 1992Assignee: Bayer AktiengesellschaftInventors: Karlheinrich Meisel, Hubertus Psaar
-
Patent number: 5118814Abstract: Tetraindolyl-heptamethine derivatives of the isomeric formulae ##STR1## in which A, B, D and E denote ##STR2## and may be identical to or different from one another, and the other symbols have the meaning indicated in the description, are used in pressure-sensitive and heat-sensitive recording materials.Type: GrantFiled: September 28, 1989Date of Patent: June 2, 1992Assignee: Bayer AktiengesellschaftInventors: Horst Berneth, Hubertus Psaar, Gunter Klug
-
Patent number: 5094688Abstract: Color-forming agents of the present formula ##STR1## wherein X denotes hydroxyl, alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, aryloxy, acyloxy, alkylamino, dialkylamino, acylamino, aralkylamino or arylamino,R denotes alkyl, alkenyl or aralkyl,R.sub.1 denotes hydrogen, halogen or alkyl,R.sub.2 denotes alkoxy, aralkoxy, aryloxy or a radical of the formula ##STR2## Y.sub.1 and Y.sub.2 independently of one another denote alkyl, aryl, cycloalkyl or aralkyl or R.sub.2, with A in the o-position, forms a heterocyclic ring,a benzene ring can be fused onto the ring A, in the o-/m-position relative to R.sub.2, and the ring A and its fused-on rings and the cyclic and acyclic radicals can carry further non-ionic substitutents customary in dyestuffs chemistry,are used in thermoreactive papers and pressure-sensitive recording materials and for the preparation of highly concentrated solutions in organic solvents.Type: GrantFiled: August 12, 1988Date of Patent: March 10, 1992Assignee: Bayer AktiengesellschaftInventors: Udo Eckstein, Hubertus Psaar, Gert Jabs
-
Patent number: 4931567Abstract: Bis(indolyl)ethylenes of the formula ##STR1## wherein R.sub.1 denotes hydrogen, alkyl, aralkyl or aryl,R.sub.2 denotes hydrogen, alkyl or aryl,R.sub.3 denotes hydrogen, alkyl, alkenyl, COOH or aryl andR.sub.4 denotes hydrogen, alkyl, alkoxy, cycloalkoxy or halogen, andthese substituents, in turn, can carry non-ionic radicals or a carboxyl group, are obtained by reaction of indoles of the formula ##STR2## with carboxylic acids of the formulaR.sub.3 --CH.sub.2 --COOH (III)their chlorides, esters, for example alkyl esters, or anhydrides in the presence of phosphorus oxychloride.Type: GrantFiled: September 19, 1989Date of Patent: June 5, 1990Assignee: Bayer AktiengesellschaftInventors: Hubertus Psaar, Horst Berneth
-
Patent number: 4923641Abstract: Highly concentrated stable solutions of color-forming agents of the general formula ##STR1## wherein x denotes hydroxyl, alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, aryloxy, acyloxy, alkylamino, dialkylamino, acylamino, aralkylamino or arylamino andR denotes alkyl, alkenyl or aralkyl,further isocyclic or heterocyclic rings can be fused onto the rings A, B, C and D and the cyclic and acyclic radicals and the rings A, B, C and D can carry further non-ionic substituents which are customary in dyestuff chemistry, or mixtures thereof, in water-insoluble organic solvents from the group comprising optionally chlorinated hydrocarbons, vegetable oils and phthalic acid esters are used for the preparation of pressure-sensitive recording materials.Type: GrantFiled: September 20, 1988Date of Patent: May 8, 1990Assignee: Bayer AktiengesellschaftInventors: Udo Eckstein, Hubertus Psaar
-
Patent number: 4918048Abstract: A thermoreactive recording material contains a dyestuff precursor and an acid-modified polymer of acrylonitrile or methacrylonitrile and a 4-hydroxybenzoic acid ester as acceptor.Type: GrantFiled: April 26, 1988Date of Patent: April 17, 1990Assignee: Bayer AktiengesellschaftInventors: Hubertus Psaar, Siegfried Korte
-
Patent number: 4902806Abstract: Bis(indolyl)ethylene aldehydes of the general formula ##STR1## in which R.sub.1 denotes hydrogen, alkyl, aralkyl or aryl,R.sub.2 denotes hydrogen, alkyl or aryl,R.sub.3 denotes hydrogen, alkyl, alkenyl, COOH or aryl andR.sub.4 denotes hydrogen, alkyl, alkoxy, cycloalkoxy or halogen, andthese substituents themselves can carry non-ionic radicals or a carboxyl group, are dyestuff intermediates.Type: GrantFiled: October 24, 1988Date of Patent: February 20, 1990Assignee: Bayer AktiengesellschaftInventor: Hubertus Psaar
-
Patent number: 4897494Abstract: Bis(indolyl)ethylenes of the formula ##STR1## wherein R.sub.1 denotes hydrogen, alkyl, aralkyl or aryl,R.sub.2 denotes hydrogen, alkyl or aryl,R.sub.3 denotes hydrogen, alkyl, alkenyl, COOH or aryl andR.sub.4 denotes hydrogen, alkyl, alkoxy, cycloalkoxy or halogen, andthese substituents, in turn, can carry non-ionic radicals or a carboxyl group,are obtained by reaction of indoles of the formula ##STR2## with carboxylic acids of the formulaR.sub.3 --CH.sub.2 --COOH (III)their chlorides, esters, for example alkyl esters, or anhydrides in the presence of phosphorus oxychloride.Type: GrantFiled: October 24, 1988Date of Patent: January 30, 1990Assignee: Bayer AktiengesellschaftInventors: Hubertus Psaar, Horst Berneth
-
Patent number: 4897223Abstract: Color-forming agents of the general formula ##STR1## wherein X denotes hydroxyl, alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, aryloxy, acyloxy, alkoxycarbonyloxy, alkylamino, dialkylamino, acylamino, aralkylamino or arylamino,Q denotes cyano, alkoxycarbonyl, aryloxycarbonyl, aralkoxycarbonyl, carbamoyl, N-alkylcarbamoyl, N,N-dialkylcarbamoyl, N-alkyl-N-aryl-carbamoyl, acyl, alkoxysulphonyl, aralkoxysulphonyl, sulphamoyl, N-alkylsulphamoyl, N,N-dialkylsulphamoyl, alkylsulphonyl, arylsulphonyl or aralkylsulphonyl andR denotes alkyl, alkenyl or aralkyl,further isocyclic or heterocyclic rings can be fused on to the rings A, B, C and D, and the cyclic and acyclic radicals and the rings A, B, C and D can carry further substituents, are used for the preparation of pressure-sensitive recording materials.Type: GrantFiled: March 1, 1988Date of Patent: January 30, 1990Assignee: Bayer AktiengesellschaftInventors: Udo Eckstein, Hubertus Psaar, Roderich Raue
-
Patent number: 4869989Abstract: A dry toner for developing latent electrostatic images in electrostatic recording and printing methods contains, as charge-control substance, a pigment of the formula ##STR1## in which A.sup.- represents an anion of a heteropolyacid based on tungsten and/or molybdenum with phosphorus, vanadium, cobalt, aluminium, manganese, chromium and/or nickel or a copper(I) hexacyanoferrate anion,R.sup.1 and R.sup.3, independently of one another, represent hydrogen, alkyl or aralkyl,R.sup.2 and R.sup.4 independently of one another, represent hydrogen, alkyl, aralkyl or aryl, orR.sup.1, R.sup.2, R.sup.3 and R.sup.4, independently of one another, through linking to the o-position of the benzene ring, represent members of a five- or six-membered ring, orR.sup.1 and R.sup.2 or R.sup.3 and R.sup.Type: GrantFiled: April 12, 1988Date of Patent: September 26, 1989Assignee: Bayer AktiengesellschaftInventors: Roderich Raue, Hubertus Psaar
-
Patent number: 4849306Abstract: Dry toners for developing latent electrostatic images in electrostatic recording and printing methods contain, as charge-control substance, a pigment of the formulaF.sup.+ A.sup.- (I)in whichF represent a cationic radical of a methine dyestuff andA.sup.- represents an anion of a heteropolyacid based on tungsten and/or molybdenum with phosphorus, silicon, vanadium, cobalt, aluminum, manganese, chromium and/or nickel or a copper(I) hexacyanoferrate anion.Type: GrantFiled: February 22, 1988Date of Patent: July 18, 1989Assignee: Bayer AktiengesellschaftInventors: Roderich Raue, Hubertus Psaar, Horst Berneth
-
Patent number: 4847177Abstract: A dry toner for developing latent electrostatic images in electrostatic copying and printing processes contains, as charge-control substance, a pigment of the formula ##STR1## in which A.sup.- represents a silicomolybdate anion,R.sup.1 and R.sup.3 represent, independently of each other, hydrogen, alkyl or aralkyl,R.sup.2 and R.sup.4 represent, independently of each other, hydrogen, alkyl, aralkyl or aryl, orR.sup.1, R.sup.2, R.sup.3 and R.sup.4 represent, independently of each other, members of a five- or six-membered ring produced by linkage with the o-position of the benzene ring orR.sup.1 and R.sup.2 or R.sup.3 and R.sup.4 jointly represent members of a five- or six-membered ring,B represents oxygen, sulphur or N--R,R represents hydrogen, alkyl or aryl andD represents CH, C--CN or N,in which the two benzene rings may be fused with a further benzene ring and then NR.sup.3 R.sup.Type: GrantFiled: April 12, 1988Date of Patent: July 11, 1989Assignee: Bayer AktiengesellschaftInventors: Roderich Raue, Hubertus Psaar
-
Patent number: 4808719Abstract: Compounds of the general formula ##STR1## wherein R represents hydrogen or alkyl andA represents a radical of the formula ##STR2## wherein the rings D can carry up to 4 alkyl radicals,R.sup.1 and R.sup.2 independently of one another represent alkyl, alkenyl, cycloalkyl, aryl or aralkyl andR.sup.3 represents hydrogen, alkyl or aryl,and the said cyclic and acyclic radicals and the rings B and C may carry nonionic substituents, are used as color-forming agents.Type: GrantFiled: June 9, 1987Date of Patent: February 28, 1989Assignee: Bayer AktiengesellschaftInventors: Hubertus Psaar, Roderich Raue
-
Patent number: 4783196Abstract: Highly concentrated stable solutions of color-forming agents of the general formula ##STR1## wherein x denotes hydroxyl, alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, aryloxy, acyloxy, alkylamino, dialkylamino, acrylamino, aralkylamino or arylamino andR denotes alkyl, alkenyl or aralkyl,further isocyclic or heterocyclic rings can be fused onto the rings A, B, C and D and the cyclic and acyclic radicals and the rings A, B, C and D can carry further non-ionic substituents which are customary in dyestuff chemistry, or mixtures thereof, in water-insoluble organic solvents from the group comprising optionally chlorinated hydrocarbons, vegetable oils and phthalic acid esters are used for the preparation of pressure-sensitive recording materials.Type: GrantFiled: February 5, 1987Date of Patent: November 8, 1988Assignee: Bayer AktiengesellshcaftInventors: Udo Eckstein, Hubertus Psaar
-
Patent number: 4600930Abstract: The recording material which reacts under the influence of heat contains an acid-modified polymer of acrylonitrile as an acceptor, in addition to a dyestuff precursor.Type: GrantFiled: October 5, 1984Date of Patent: July 15, 1986Assignee: Bayer AktiengesellschaftInventor: Hubertus Psaar
-
Patent number: 4458009Abstract: Color photographic images are produced by decomposing hydrogen peroxide on nuclei present in imagewise distribution and bleaching out a dye by the hydrogen peroxide on those parts of the image where no such nuclei are present.Type: GrantFiled: January 10, 1983Date of Patent: July 3, 1984Assignee: Agfa-Gevaert AktiengesellschaftInventors: Edith Weyde, Wilhelm Saleck, Hubertus Psaar, Anita von Konig, Hans hlschlager
-
Patent number: 4211436Abstract: A pressure-sensitive and heat-sensitive recording material contains color-forming agents of the formula ##STR1## wherein R.sub.1 denotes hydrogen or a non-ionic radical which is free from amino groups,R.sub.2 denotes hydroxyl, alkylamino, dialkylamino, acylamino, aralkylamino, arylamino, a saturated heterocyclic radical, alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, aryloxy, acyloxy or a direct bond to R.sub.4,R.sub.3 denotes hydroxyl, alkoxy, aralkoxy, alkenyloxy, cycloalkoxy, aryloxy, alkylthio, arylthio or a radical of the formula ##STR2## wherein R.sub.5 and R.sub.6 independently of one another denote hydrogen, alkyl, aralkyl, cyloalkyl or aryl or, together with the nitrogen atom, form a ring, or R.sub.5 forms a ring with the ring B in the o-position relative to the nitrogen atom, andR.sub.4 denotes an aryl radical which is free from amino groups or a heterocyclic radical.Type: GrantFiled: November 8, 1978Date of Patent: July 8, 1980Assignee: Bayer AktiengesellschaftInventors: Hans-Peter Kuhlthau, Hubertus Psaar, Roderich Raue
-
Patent number: 4201707Abstract: Dyestuffs of the formula ##STR1## wherein R.sub.1 denotes halogen, alkyl, cycloalkyl, aralkyl, nitro, cyano, acyl, acylamino, amino, aminocarbonyl, aminosulphonyl, alkylsulphonyl, arylsulphonyl, alkoxy, aryloxy, aralkoxy, carboxyl, alkoxycarbonyl, aryloxycarbonyl or aralkoxycarbonyl or arylazo,R.sub.2 denotes alkyl, alkenyl, cycloalkyl, aryl or aralkyl,R.sub.3 and R.sub.4 denote alkyl, cycloalkyl or aralkyl,R.sub.5, R.sub.6, R.sub.7 and R.sub.8 denote hydrogen, alkyl, cycloalkyl, aralkyl or aryl, andwhereinR.sub.6 and R.sub.7 can together form a fused cycloaliphatic ring,A denotes aryl or heteryl,n denotes 0, 1 or 2 andAn.sup.(-) denotes an anion,process for their preparation and their use for dyeing and printing especially polyacrylonitrile and acid modified polyamides and polyesters.Type: GrantFiled: June 26, 1978Date of Patent: May 6, 1980Assignee: Bayer AktiengesellschaftInventor: Hubertus Psaar
-
Patent number: 4145537Abstract: Dyestuffs of the formula ##STR1## IN WHICH R denotes hydrogen, alkyl, alkenyl, cycloalkyl, aralkyl, aryl, alkoxy, aralkoxy, aryloxy, alkylamino, aralkylamino, arylamino, acylamino, carboxylic acid ester, carbonamido, acyl, halogen or nitrile,R.sub.1 denotes hydrogen, alkyl or aralkyl,R.sub.2 denotes hydrogen, alkyl, alkenyl, carbonamide or nitrile,R.sub.3 denotes alkyl, alkenyl or aralkyl,R.sub.4 denotes hydrogen, alkyl, alkenyl, aralkyl, alkoxy or aralkoxy, alkylamino, aralkylamino, acylamino, carbonamido, nitrile, nitro or halogen,R.sub.5 and R.sub.6 denote hydrogen, alkyl, aralkyl or a cycloaliphatic 5-membered or 6-membered ring, or R.sub.6 together with R.sub.1 forms a hydroaromatic 6-membered ring andAn.sup.(-) represents an anion, andProcesses for their preparation and their use for dyeing and printing natural and synthetic materials.Type: GrantFiled: October 15, 1974Date of Patent: March 20, 1979Assignee: Bayer AktiengesellschaftInventors: Hubertus Psaar, Roderich Raue