Patents by Inventor Peter Rohringer
Peter Rohringer 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: 7731820Abstract: The invention relates to a composition comprising a) at least one water-soluble fluorescent whitening agent, b) a polymer formed from an ethylenically unsaturated monomer or monomer blend, characterized in that at least one monomer is acrylamide and the water-soluble polymer has an average (weight average) molecular weight of between 500 and 49,000, optionally, c) polyethylene glycol with a weight average molecular weight of between 500 and 6000 and d) water and the use of the composition for the fluorescent whitening of paper in coating and size press or film press applications.Type: GrantFiled: October 17, 2005Date of Patent: June 8, 2010Assignee: Ciba Specialty Chemicals CorporationInventors: Robert Cockcroft, Ted Deisenroth, Peter Rohringer, Winfried Steffen
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Patent number: 7585333Abstract: The present invention relates to a fluorescent whitening agent comprising a mixture of two symmetrically and one asymmetrically substituted triazinylaminostilbene disulphonic acids, certain novel derivatives, a process for their preparations and use of the mixture for whitening synthetic or natural organic materials, especially paper and for the fluorescent whitening and improvement of sun protection factors of textile materials.Type: GrantFiled: January 10, 2005Date of Patent: September 8, 2009Assignee: Ciba Specialty Chemicals CorporationInventors: Fabienne Cuesta, Ted Deisenroth, Peter Rohringer
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Patent number: 7566349Abstract: The present invention provides novel bis-triazinylaminostilbene amphoteric fluorescent whitening agents, comprising both individual components and mixtures thereof, a process for their preparation, intermediates useful for their preparation and use of the fluorescent whitening agents for the fluorescent whitening of paper.Type: GrantFiled: June 11, 2007Date of Patent: July 28, 2009Assignee: Ciba Specialty Chemicals CorporationInventors: Goetz Scheffler, Peter Rohringer, Ian John Fletcher
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Publication number: 20080307585Abstract: The present invention relates to a fluorescent whitening agent comprising a mixture of two symmetrically and one asymmetrically substituted triazinylaminostilbene disulphonic acids, certain novel derivatives, a process for their preparations and use of the mixture for whitening synthetic or natural organic materials, especially paper and for the fluorescent whitening and improvement of sun protection factors of textile materials.Type: ApplicationFiled: January 10, 2005Publication date: December 18, 2008Inventors: Fabienne Cuesta, Ted Deisenroth, Peter Rohringer
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Publication number: 20080191169Abstract: The invention relates to a composition for optical brightening of substrates suitable for ink jet printing, comprising a) a fluorescent whitening agent of the formula (1): wherein X1, X2, X3 and X4 each, independent of the other, represent —NR1 R2 or —OR3, wherein R, and R2 are, independently of each other, hydrogen, cyano, a C,-C4alkyl group, which is unsubstituted or substituted by one or two of the following residues selected from the group consisting of C,-C4alkoxy, hydroxy, carboxyl or a salt thereof (—CO2M), cyano, carbonamido, thiol, guanidine, substituted or unsubstituted phenyl, unsubstituted or C.Type: ApplicationFiled: April 25, 2005Publication date: August 14, 2008Applicant: CIBA SPECIALTY CHEMICALS HOLDING INC.Inventors: Peter Rohringer, Robert Hochberg, Oliver Becherer, Stéphane Biry
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Publication number: 20080135805Abstract: The invention relates to a fluorescent pigment comprising a) a melamine-formaldehyde polycondensation product, b) a distyryl biphenyl fluorescent whitening agent (FWA) of the formula (1), in which R1 represents hydrogen, chlorine or C1-C4alkoxy and M represents hydrogen, an alkaline or alkaline earth metal, ammonium or ammonium that is mono-, di-, tri- or tetrasubstituted by C1-C4alkyl or C2-C4hydroxyalkyl and, optionally, c) at least one additional fluorescent whitening agent, a process for its preparation and use thereof for the fluorescent whitening of paper, especially in coating.Type: ApplicationFiled: August 3, 2005Publication date: June 12, 2008Inventors: Fabienne Cuesta, Ted Deisenroth, Kamalesh Pai Fondekar, Ramachandra V. Joshi, Peter Rohringer, Uma Ganeshram, Josef Zelger
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Publication number: 20080073617Abstract: The invention relates to a composition comprising a) at least one water-soluble fluorescent whitening agent, b) a polymer formed from an ethylenically unsaturated monomer or monomer blend, characterized in that at least one monomer is acrylamide and the water-soluble polymer has an average (weight average) molecular weight of between 500 and 49,000, optionally, c) polyethylene glycol with a weight average molecular weight of between 500 and 6000 and d) water and the use of the composition for the fluorescent whitening of paper in coating and size press or film press applications.Type: ApplicationFiled: October 17, 2005Publication date: March 27, 2008Inventors: Robert Cockcroft, Ted Deisenroth, Peter Rohringer, Winfried Steffen
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Publication number: 20080040865Abstract: A whitening pigment comprising the reaction product of (a) a melamine-formaldehyde and/or a melamine-urea poly-condensation product and (b) a water-soluble fluorescent whitening agent of the formula (1), wherein each of the two R1 groups, independent of the other, represents a C1-C6alkyl or C1-C4alkyl-O—C1-C4alkyl residue, which is substituted by one or two —CONH2, —CONHC1-C4alkyl, —COOH, —SO2NH2, —SO2NHC1-C4alkyl or —NH2 groups, each of the two R2 groups, independent of the other, represents hydrogen, C1-C4alkyl, C2-C4hydroxyalkyl or C1-C4alkoxyC1-C4alkyl, or R1 and R2 together with the nitrogen atom complete a piperazine ring, each of the two X1 groups, independently, represent —OH, —OC1-C4alkyl, —Oaryl or the group —NR3R4, wherein R3 and R4 each, independently, represent hydrogen, C1-C4alkyl, C2-C4hydroxyalky, C1-C4alkoxyC1-C4alkyl, a phenyl, phenyl mono- or disulphonic acid residue or, R3 and R4, together with the nitrogen atom to which they are attached, complete a morpholino, piperidino or pyrrolidino rType: ApplicationFiled: November 8, 2004Publication date: February 21, 2008Inventors: Ted Deisenroth, Kamalesh Pai Fondekar, Peter Rohringer, Fabienne Cuesta, Ramachandra V. Joshi, Smita G. Kavishwar, Uma Shadakshari
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Publication number: 20070260060Abstract: The present invention provides novel bis-triazinylaminostilbene amphoteric fluorescent whitening agents, comprising both individual components and mixtures thereof, a process for their preparation, intermediates useful for their preparation and use of the fluorescent whitening agents for the fluorescent whitening of paper.Type: ApplicationFiled: June 11, 2007Publication date: November 8, 2007Inventors: Goetz Scheffler, Peter Rohringer, Ian Fletcher
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Patent number: 7270771Abstract: The present invention relates to a fluorescent whitening agent comprising a mixture of two symmetrically and one asymmetrically substituted triazinylaminostilbene disulphonic acids, novel asymmetrically substituted derivatives, a process for their preparations and use of the mixture for whitening synthetic or natural organic materials, especially paper and for the fluorescent whitening and improvement of sun protection factors of textile materials.Type: GrantFiled: June 24, 2003Date of Patent: September 18, 2007Assignee: Ciba Specialty Chemicals CorporationInventors: Fabienne Cuesta, Georges Metzger, Roland Naef, Peter Rohringer, Rainer Hans Traber
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Patent number: 7247174Abstract: The present invention provides novel bis-triazinylaminostilbene amphoteric fluorescent whitening agents, comprising both individual components and mixtures thereof, a process for their preparation, intermediates useful for their prepartion and use of the fluorescent whitening agents for the fluorescents whitening of paper.Type: GrantFiled: November 11, 2003Date of Patent: July 24, 2007Assignee: Ciba Specialty Chemicals CorporationInventors: Goetz Scheffler, Peter Rohringer, Ian John Fletcher
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Publication number: 20060185805Abstract: Composition for the fluorescent whitening of paper, which comprises a) a fluorescent whitening agent (FWA) derived from 4,4?-bis[(1,3,5-triazin-2-yl)amino]stilbene-2,2?-disulphonic acid and characterized by one or both of the triazine rings carrying an —NH2 substituent; b) water and c) optionally, further auxiliaries, the use thereof in either the pulp mass, in coating or in the metering size-press or film press and to a process thereto.Type: ApplicationFiled: July 28, 2004Publication date: August 24, 2006Inventors: Peter Rohringer, Robert Hochberg, Oliver Becherer, Hans Kramer, Goetz Scheffler
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Publication number: 20060155124Abstract: The present invention provides novel bis-triazinylaminostilbene amphoteric fluorescent whitening agents, comprising both individual components and mixtures thereof, a process for their preparation, intermediates useful for their prepartion and use of the fluorescent whitening agents for the fluorescents whitening of paper.Type: ApplicationFiled: November 11, 2003Publication date: July 13, 2006Inventors: Goetz Scheffler, Peter Rohringer, Ian Fletcher
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Publication number: 20060030707Abstract: The present invention relates to a fluorescent whitening agent comprising a mixture of two symmetrically and one asymmetrically substituted triazinylaminostilbene disulphonic acids, novel asymmetrically substituted derivatives, a process for their preparations and use of the mixture for whitening synthetic or natural organic materials, especially paper and for the fluorescent whitening and improvement of sun protection factors of textile materials.Type: ApplicationFiled: June 26, 2003Publication date: February 9, 2006Inventors: Fabienne Cuesta, Georges Mertzger, Roland Naef, Peter Rohringer, Rainer Traber
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Publication number: 20050203221Abstract: The present invention relates to novel whitening pigments comprising the reaction product of (a) a melamine-formaldehyde and/or a melamine-urea polycondensation product and (b) a water-soluble fluorescent whitening agent of the formula (1) wherein R1 represents —OH, —OC1-C4alkyl, —Oaryl, —NH2, —NHC1-C4alkyl, —N(C1-C4alkyl)2, —NHC2-C4hydroxyalkyl, —N(C2-C4hydroxyalkyl)2, —N(C1-C4alkyl)(C2-C4hydroxyalkyl), —NHC1-C4alkoxy-C1-C4alkyl, —N(C1-C4alkoxy-C1-C4alkyl)2, morpholino, piperidino, pyrrolidino or the residue of an amino acid from which a hydrogen atom has been abstracted from the amino group, R2 represents —CONH2, —CONHC1-C4alkyl, —COOM, —SO2NH2 or —SO2NHC1-C4alkyl and M is hydrogen, sodium, potassium, calcium, magnesium, ammonium, mono-di-, tri- or tetra-substituted C1-C4alkylammonium or C2-C4hydroxyalkylammonium or mixtures thereof, a process for preparation of the whitening pigments and their use for the fluorescent whitening of paper, especially in coating, for the fluorescent whitening and improvement oType: ApplicationFiled: June 3, 2003Publication date: September 15, 2005Inventors: Fabienne Cuesta, Roland Naef, Ted Deisenroth, Peter Rohringer, Marc Grienenberger, Serge Schroeder
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Publication number: 20050161184Abstract: A compound of the formula wherein A1 and A2 each, independently of one another, represent —SO3 or —SO3M, where M represents hydrogen, an alkaline or alkaline earth metal, ammonium or alkylammonium, B1 and B2 each, independently of one another, represent the moiety in which R1 represents hydrogen, a straight-chain C1-C12alkyl or branched C3-C12alkyl group which C2-C12alkyl and C3-C12alkyl group, respectively, may be interrupted by one or two heteroatoms and is unsubstituted or substituted by one or two —OH, —OC1-C4alkyl, —NH2, —NHC1-C4alkyl, —N(C1-C4alkyl)2, -N-pyrrolidino, -N-piperidino, -N-morpholino or —N+(C1C4alkyl)3 groups and R2 represents C1-C4alkyl, C2-C4hydroxyalkyl, —CH2CONH2, —CH2OOOH or —CH2OOO C1C4alkyl or, alternatively, B1 and B2 each, independently of one another, represent a group of the formula in which R3, R4 and R5 each, independently of each other, represent hydrogen, C1-C4alkyl, C2-C4hydroxyalkyl, the group —X?—NR6R7 or the group —X?—N+R3R6R7, whereby at least one of the substituents R4 aType: ApplicationFiled: March 13, 2003Publication date: July 28, 2005Inventors: Goetz Scheffler, Peter Rohringer, Rene Schlatter, Ted Deisenroth
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Patent number: 6797752Abstract: The use of whitening pigments comprising (a) a melamine-formaldehyde or phenol-formaldehyde polycondensation product and (b) a water-soluble fluorescent whitening agent of formula (1), wherein R1 and R2 are each independently of the other —OH, —Cl, —NH2, —O—C1-C4alkyl, —O—aryl, —NH—C1-C4alkyl, —N(C1-C4alkyl)2, —N(C1-C4alkyl)(C1-C4hydroxyalkyl), —N(C1-C4hydroxyalkyl)2, or —NH—aryl, for example aniline-mono- or -di-sulfonic acid or an anilinesulfon-amide, morpholino, S—C1-C4alkyl(aryl), or a radical of an amino acid, for example aspartic acid or inimoacetic acid, which radical is substited at the amino group, and M is hydrogen; sodium; potassium; calcium; magnesium; ammonium; mono-, di-, tri- or tetra-C1-C4alkylammoniun; mono-, di- or tri-C1-C4hydroxyalkylammonium; or ammonium di- or tri-substitue by a mixture of C1-C4 alkyl and C1-C4hydroxyalkyl groups, for whitening paper coating compositions.Type: GrantFiled: February 1, 2002Date of Patent: September 28, 2004Assignee: Ciba Specialty Chemicals CorporationInventor: Peter Rohringer
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Publication number: 20040149410Abstract: A composition comprising a) 5 to 25% by weight of a fluorescent whitening agent of the formula (1), wherein R1 and R2 independently represent C1-C4alkyl, C2-C4hydroxyalkyl or together complete a morpholine ring and M is an alkaline or alkaline earth metal, b) 0.5 to 5% by weight of a swellable layered silicate which is hectorite and/or vermiculite, c) water and, optionally, d) further adjuvants and the use thereof for the fluorescent whitening of paper in the pulp mass, in coatings or in the size press or metering size press.Type: ApplicationFiled: November 24, 2003Publication date: August 5, 2004Inventors: Peter Rohringer, Marc Roger Grienenberger
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Patent number: 6723846Abstract: The present invention relates to compounds having formula (1): wherein each R1 represents, independently, a linear C1-C4-alkylene residue which is unsubstituted or substituted by hydroxy, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-hydroxy- or alkoxy-alkoxy, —OCOM, —OCOC1-C4-alkyl, or an amino acid residue from which a hydrogen atom on the amino group has been removed; each R2 represents, independently, a linear C1-C4-alkylene residue which is unsubstituted or substituted by hydroxy, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-hydroxy- or alkoxy-alkoxy, —OCOM, —OCOC1-C4-alkyl, —CO2M, CO2C1-C4-alkyl SO3M or phenoxy which is unsubstituted or substituted by halogen, C1-C4-alkyl or C1-C4-alkoxy, —CO2M or CO2C1-C4-alkyl, NH3 or mono- or disubstituted amino; or phenyl which is unsubstituted or substituted by 1 to 3 SO3M, SO2NHC1-C4-alkyl, —SO2NH2, —CO2M, —CO2M, —CO2C1-C4-alkyl, —CONH2, —CONHC1-C4-alkyl, —NHCOC1-C4-alkyl or mono- or disubstituted amino groups;Type: GrantFiled: March 6, 2002Date of Patent: April 20, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Georges Metzger, Serge Hauger, Fabienne Cuesta, Christophe Bulliard, Peter Rohringer, Marc Roger Grienenberger
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Patent number: 6620294Abstract: Stable formulations of fluorescent whitening agents are described. These contain a) 2 to 20% by weight of a fluorescent whitening agent of formula (1) in which R1 is hydrogen, C1-C5-alkyl, C1-C5-alkoxy or halogen and M is hydrogen, an alkali metal, ammonium or magnesium, b) 4 to 30% by weight of an unmodified or modified polyvinyl alcohol, c) 55 to 94% by weight of water and d) 0 to 20% weight of further additives, polyethylene glycol being excluded. A process for the preparation of the formulations and their use for whitening paper materials is also described.Type: GrantFiled: February 8, 2002Date of Patent: September 16, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Olli Juhani Jokinen, Rainer Hans Traber, Peter Rohringer