Patents by Inventor Ulrich Daum
Ulrich Daum 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: 8030431Abstract: A curable mixture which includes at least (a) 10 to 100 percent by weight, in relation to the sum of the components (a) and (b), of at least one bi- or polyfunctional aromatic cyanate or a prepolymer formed from at least one bi- or polyfunctional aromatic cyanate or a mixture formed from the abovementioned cyanates and/or prepolymers; (b) 0 to 90 percent by weight, in relation to the sum of the components (a) and (b), of at least one mono-, bi- or polyfunctional epoxy resin; (c) 0.5 to 30 percent by weight, in relation to the sum of the components (a) and (b), of at least one mono-, bi- or polyfunctional aromatic amine; and (d) 0 to 5 percent by weight, in relation to the sum of the components (a) and (b), of at least one catalyst from the group consisting of transition metal compounds and boron trihalides.Type: GrantFiled: October 18, 2002Date of Patent: October 4, 2011Assignee: Lonza AGInventors: Ulrich Daum, Alessandro Falchetto, Sajal Das
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Patent number: 7030204Abstract: Described are prepolymer compositions on the basis of novolak cyanates of the general formula wherein n is a number from 0 to 20 and the radicals R are identical or different and represent hydrogen or methyl. The compositions contain: 30 to 90 parts by weight of a prepolymer from novolak cyanates (I) wherein R=hydrogen (Ia) and 10 to 70 parts by weight of novolak cyanates (I) wherein R=methyl (Ib), and optionally highly disperse silicon dioxides and/or particulate or fibrous fillers. The inventive compositions are solid at normal temperature and can be ground to flowable powders. They have excellent stability when stored and are easy to process and especially suitable for use as the resin component in base materials for printed circuits on resin-bound abrasive products.Type: GrantFiled: February 5, 2002Date of Patent: April 18, 2006Assignee: Lonza AGInventors: Martin Gmur, Ulrich Daum, Brigitta Heyl-Frank, Paul Hanselmann, Alessandro Falchetto
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Publication number: 20040254329Abstract: A curable mixture which includes at least (a) 10 to 100 percent by weight, in relation to the sum of the components (a) and (b), of at least one bi- or polyfunctional aromatic cyanate or a prepolymer formed from at least one bi- or polyfunctional aromatic cyanate or a mixture formed from the abovementioned cyanates and/or prepolymers; (b) 0 to 90 percent by weight, in relation to the sum of the components (a) and (b), of at least one mono-, bi- or polyfunctional epoxy resin; (c) 0.5 to 30 percent by weight, in relation to the sum of the components (a) and (b), of at least one mono-, bi- or polyfunctional aromatic amine; and (d) 0 to 5 percent by weight, in relation to the sum of the components (a) and (b), of at least one catalyst from the group consisting of transition metal compounds and boron trihalides.Type: ApplicationFiled: April 16, 2004Publication date: December 16, 2004Inventors: Ulrich Daum, Alessandro Falchetto, Sajal Das
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Patent number: 6800721Abstract: The unsaturated oligophenol cyanates of the general formula [A—]n[B—A—]xB[—A]m (I) in which A is a group of formula: and B is a group of formula: where R1, R2 and R3 are each hydrogen or a bond with a group B, there being either one or two bonds with group B; and both R4 and R4′ as well as R5 and R5′ separately or jointly represent a direct bond or hydrogen and a bond with a group A, there being either one or two bonds with A. The indices m and n are 0 or 1 but not both 1 at the same time and x is a whole number between 0 and 10, where at least one of the numbers, m, n and x is not 0. The unsaturated oligophenol cyanates can be prepared by reacting the corresponding oligophenols with cyanogen chloride. The have a low viscosity and owing to their double bonds are able to undergo free-radical polymerization.Type: GrantFiled: February 9, 2001Date of Patent: October 5, 2004Assignee: Lonza AGInventors: Ulrich Daum, Alessandro Falchetto
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Publication number: 20040097690Abstract: Described are prepolymer compositions on the basis of novolak cyanates of the general formula 1Type: ApplicationFiled: August 7, 2003Publication date: May 20, 2004Inventors: Martin Gmr, Ulrich Daum, Brigitta Heyl-Frank, Paul Hanselmann, Alessandro Falchetto
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Patent number: 6653497Abstract: Dicyanatochalcones of general formula: wherein R1 to R8, independent of one another, represent hydrogen, C1-4-alkyl, C1-4-alkoxy or halogen. The compounds can be produced from corresponding dicyanatochalcones by reacting them with chlorine cyanide or bromine cyanide and with a tertiary amine. The compounds are suited for producing polytriazine resins exhibiting good mechanical properties, a low dielectric constant and a good behavior in fire.Type: GrantFiled: May 29, 2002Date of Patent: November 25, 2003Assignee: Lonza AGInventors: Sajal Das, Ulrich Daum, Marion Fengler-Veith, Pascal Willa
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Patent number: 6506808Abstract: Microcellular rigid foams with a matrix consisting of cross-linked duromers, especially of polytriazine resins, and with an apparent density of 20 to 95 percent of the density of the compact matrix material. The rigid foams are highly stable and highly temperature resistant and are suitable for use, e.g., as material for aircraft lining.Type: GrantFiled: July 10, 2000Date of Patent: January 14, 2003Assignee: Lonza AGInventors: Ulrich Daum, Dietmar Rakutt
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Patent number: 6476175Abstract: A process including preparing a polyurethane in the presence of a catalyst which is a bicyclic amidine of the formula: wherein A is selected from the group consisting of —CR1R2—CR3R4—CR5R6—, —CR1R2—CR3R4—CR5R6—CR7R8—, and —CR1R2—CR3R4—CR5R6—CR7R8—CR9R10—, wherein the substituents in A are in each case numbered starting from the nitrogen atom, and B is selected from the group consisting of —CR11R12—CR13R14—, —CR11R12—CR15R16—CR13R14—, and —CR11R12—CR15R16—CR17R18—CR13R14—, and R1 to R18 are, in each case independent of one another, hydrogen, C1-C4-alkyl, aryl, or C1-C4-alkyl that is substituted with hydroxyl, amino, C1-C4-alkylamino or mercapto, with the proviso that at least one of the substituents R1 to R18 is (1) hydroxyl, (2) amino, (3) C1-C4-alkylamino, (4) mercapto, (5) C1-C4-alkyl substituted with hydroxyl, (6) C1-C4-alkyl subType: GrantFiled: May 24, 2001Date of Patent: November 5, 2002Assignee: Lonza Ltd.Inventors: Oleg Werbitzky, Ulrich Daum, Rachel Bregy
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Patent number: 6437057Abstract: Blends of novolaks and cyanates, such blends can be thermally hardened in a short time and without using a catalyst and have an excellent storage stability. The resins obtained by the blends can be used as binding agents in abradants or as chip coverings or printed circuit boards (PCB) in electronics.Type: GrantFiled: August 10, 2001Date of Patent: August 20, 2002Assignee: Lonza AGInventors: Ulrich Daum, Alessandro Falchetto
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Publication number: 20020028939Abstract: The process for the preparation of bicyclic amidines of the general formula: 1Type: ApplicationFiled: May 24, 2001Publication date: March 7, 2002Inventors: Oleg Werbitzky, Ulrich Daum, Rachel Bregy
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Patent number: 6255488Abstract: The process for the preparation of bicyclic amidines of the general formula: wherein A is selected from the group consisting of —CR1R2—CR3R4—CR5R6—, —CR1R2—CR3R4—CR5R6—CR7R8— and —CR1R2—CR3R4—CR5R6—CR7R8—CR9R10—, wherein the substituents in A are in each case numbered starting from the nitrogen atom, and B is selected from the group consisting of —CR11R12—CR13R14—, —CR11R12—CR15R16—CR13R4— and —CR11R12—CR15R16—CR17R18—CR13—R14—, and R1, R2 and R11 to R14 are, in each case independently of one another, hydrogen, C1-C4-alkyl, aryl, or are C1-C4-alkyl which is substituted with hydroxyl, amino, C1-C4-alkylamino or mercapto, and R3 to R10 and R15 to R18 are, in each case independently of one another, hydrogen, C1-C4-alkyl, aryl, hydroxyl, amino, C1-C4-alkylamino or mercapto, or are C1-C4-alkyl which is substituted with hydroxyl, amType: GrantFiled: April 30, 1999Date of Patent: July 3, 2001Assignee: Lonza AGInventors: Oleg Werbitzky, Ulrich Daum, Rachel Bregy
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Patent number: 6013692Abstract: Cellular Polyurethane elastomer which is produced by reacting:(a) an isocyanate component which includes methylenebis(phenyl isocyanate) (MDI) and/or tolylene diisocyante (TDI), in monomeric form or as liquefied prepolymer with(b) compounds which at least two isocyanate-reactive hydrogen atoms and(c) 4,4'-methylenebis(3-chloro-2,6-dialylaniline) or a mixture of 4,4'-methylenebis-(3-chloro-2,6-dialyaniline) with one or more aromatic, aliphatic or cycloaliphatic diamines as chain extending agent, if desired with further polyol, and(d) a blowing agent in the presence of the usual catalysts and, if desired, other additives.Type: GrantFiled: December 17, 1998Date of Patent: January 11, 2000Assignee: Lonza AGInventors: Ulrich Daum, Arno Feeken, Wolfgang Jarre, Andreas Schmidt, Reinhard Sklenarz
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Patent number: 5932762Abstract: A process for the production of aryl cyanates of the general formula I: ##STR1## A phenol of the general formula II: ##STR2## a tertiary amine and cyanogen chloride, of which at least one of the three components is present as a solution in an organic solvent, are fed essentially simultaneously and continuously at a temperature of -20.degree. C. to 0.degree. C. and in a molar ratio of cyanogen chloride to the reactive hydroxy groups of the phenol of 1.0:1.0 to 1.2:1.0 in a cooled loop reactor, so that the reaction components, before they come in contact with one another, are prediluted by the reaction mixture circulating in the loop reactor. Simultaneously, a stream of the reaction mixture corresponding to the fed volume of the reaction components is drawn off from the circulation.Type: GrantFiled: January 8, 1997Date of Patent: August 3, 1999Assignee: Lonza, Ltd.Inventors: Alessandro Falchetto, Ulrich Daum
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Patent number: 5922869Abstract: The process for the preparation of bicyclic amidines of the general formula: ##STR1## wherein A is selected from the group consisting of --CR.sup.1 R.sup.2 --CR.sup.3 R.sup.4 --CR.sup.5 R.sup.6 --, --CR.sup.1 R.sup.2 --CR.sup.3 R.sup.4 --CR.sup.5 R.sup.6 --CR.sup.7 R.sup.8 -- and --CR.sup.1 R.sup.2 --CR.sup.3 R.sup.4 --CR.sup.5 R.sup.6 --CR.sup.7 R.sup.8 --CR.sup.9 R.sup.10 --, wherein the substituents in A are in each case numbered starting from the nitrogen atom, and B is selected from the group consisting of --CR.sup.11 R.sup.12 --CR.sup.13 R.sup.14 --, --CR.sup.11 R.sup.12 --CR.sup.15 R.sup.16 --CR.sup.13 R.sup.14 -- and --CR.sup.11 R.sup.12 --CR.sup.15 R.sup.16 --CR.sup.17 R.sup.18 --CR.sup.13 R.sup.14 --, and R.sup.1, R.sup.2 and R.sup.11 to R.sup.14 are, in each case independently of one another, hydrogen, C.sub.1 -C.sub.4 -alkyl, aryl, or are C.sub.1 -C.sub.4 -alkyl which is substituted with hydroxyl, amino, C.sub.1 -C.sub.4 -alkylamino or mercapto, and R.sup.3 to R.sup.10 and R.sup.15 to R.sup.Type: GrantFiled: October 3, 1997Date of Patent: July 13, 1999Assignee: Lonza Ltd.Inventors: Oleg Werbitzky, Ulrich Daum, Rachel Bregy
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Patent number: 5734076Abstract: The 4,4'-methylene-bis-(3-chloro-2,6-dialkylphenylisocyanates) of the general formula ##STR1## are new polyisocyanates for the production of PU systems with high chemical stability and good thermal stability.Type: GrantFiled: March 20, 1997Date of Patent: March 31, 1998Assignee: Lonza AGInventors: Ulrich Daum, Peter Hardt
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Patent number: 5723605Abstract: The process for the preparation of bicyclic amidines of the general formula: ##STR1## wherein A is selected from the group consisting of --CR.sup.1 R.sup.2 --CR.sup.3 R.sup.4 --CR.sup.5 R.sup.6 --, --CR.sup.1 R.sup.2 --CR.sup.3 R.sup.4 --CR.sup.5 R.sup.6 --CR.sup.7 R.sup.8 -- and --CR.sup.1 R.sup.2 --CR.sup.3 R.sup.4 --CR.sup.5 R.sup.6 --CR.sup.7 R.sup.8 --CR.sup.9 R.sup.10 --, wherein the substituents in A are in each case numbered starting from the nitrogen atom, and B is selected from the group consisting of --CR.sup.11 R.sup.12 --CR.sup.13 R.sup.14 --, --CR.sup.11 R.sup.12 --CR.sup.15 R.sup.16 --CR.sup.13 R.sup.14 -- and --CR.sup.11 R.sup.12 --CR.sup.15 R.sup.16 --CR.sup.17 R.sup.18 --CR.sup.13 R.sup.14 --, and R.sup.1, R.sup.2 and R.sup.11 to R.sup.14 are, in each case independently of one another, hydrogen, C.sub.1 -C.sub.4 -alkyl, aryl, or are C.sub.1 -C.sub.4 -alkyl which is substituted with hydroxyl, amino, C.sub.1 -C.sub.4 -alkylamino or mercapto, and R.sup.3 to R.sup.10 and R.sup.15 to R.sup.Type: GrantFiled: November 10, 1994Date of Patent: March 3, 1998Assignee: Lonza Ltd.Inventors: Oleg Werbitzky, Ulrich Daum, Rachel Bregy
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Patent number: 5698607Abstract: Tertiary diamines having two saturated heterocyclic rings joined by an aliphatic carbon chain, of the general formula ##STR1## in which each A is a two- to four-membered aliphatic carbon chain substituted if desired by one or more C.sub.1 -C.sub.4 -alkyl groups, are prepared in one stage by catalytic hydrogenation of the corresponding dinitriles of the general formulaN.tbd.C--A--C.tbd.N IIThe diamines preparable in accordance with the invention are particularly suitable as catalysts for the production of polyurethanes.Type: GrantFiled: January 30, 1997Date of Patent: December 16, 1997Assignee: Lonza AGInventors: Josef Heveling, Andreas Gerhard, Ulrich Daum
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Patent number: 5488163Abstract: A process for the production of 4,4'-(phenylenediisopropyl)bis(2,6-dialkylanilines) of the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each is a (C.sub.1 -C.sub.4)alkyl group, R.sub.3 is hydrogen or halogen, and the central phenylene function is substituted in the 1,3 or 1,4 position, by reaction of a corresponding diisopropyl benzene with a corresponding aniline in the presence of catalytic amounts of aluminum chloride. The 4,4'-(phenylenediisopropyl)-bis(2,6-dialkylanilines) are used as cross-linking agents for epoxy resins, as chain lengthening agents for polyurethanes, for the production of hydrolysis protective agents for polyurethanes, or for the production of UV stabilizers in varnishes.Type: GrantFiled: December 20, 1994Date of Patent: January 30, 1996Assignee: Lonza Ltd.Inventors: Peter Hardt, Ulrich Daum, Theodor Volker
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Patent number: 4870156Abstract: Catalyst residues are reduced in linear alternating polymers of carbon monoxide and at least one ethylenically unsaturated hydrocarbon produced in the presence of a Group VIII transition metal catalyst by contacting the linear alternating polymer with a dithiocarbamate compound in a non-gaseous reaction environment in an oxygenated organic reaction diluent.Type: GrantFiled: September 27, 1988Date of Patent: September 26, 1989Assignee: Shell Oil CompanyInventors: Piero Pino, Luigi Venanzi, Heinz Wittwer, Ulrich Daum