Patents by Inventor Rudolf Zink
Rudolf Zink 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: 6835329Abstract: The present invention provides compounds having the formula (1) in which each of the radicals R1, R2, R3 and R4, independently, represent hydrogen, hydroxy, halogen, C1-C20-alkyl, C1-C20-alkoxy, CN or COOR5, in which R5 is C1-C20-alkyl and Z represents a heterocyclic residue selected from the 2H-benzo[1,2-d]triazol-2-yl, 2H-naphtho[1,2-d]triazol-2-yl, benzimidazol-2-yl, benzoxazol-2-yl and benzofuran-2-yl moieties, optionally substituted by C1-C4-alkyl, C1-C4-alkoxy, halogen or NHCOC1-C4-alkyl, a process for their preparation, new intermediate benzoxazinones useful for their preparation and use of the compounds of formula (1) as UV-absorbers which have improved absorption spectrum characteristics, superior resistance to exposure to UV light and excellent thermal stability, relative to known triphenyltriazine compounds.Type: GrantFiled: March 31, 2003Date of Patent: December 28, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Dieter Reinehr, Hanspeter Sauter, Rudolf Zink
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Patent number: 6800762Abstract: There is described the use of indoline derivatives of formula wherein R1 is hydrogen; C1-C5alkyl; C1-C18alkoxy; or halogen; R2 is C1-C8alkyl; C5-C7cycloalkyl; C6-C10aryl; R3 is C1-C18alkyl or a radical of formula (1a) R4 is hydrogen; or a radical of formula R5 is C1-C18alkoxy; or a radical of formula R6 and R7 are each independently of the other hydrogen; or C1-C5alkyl; R8 is hydrogen; C1-C5alkyl; C5-C7cycloalkyl; phenyl; phenyl-C1-C3alkyl; R9 is C1-C18alkyl; X is halogen; a radical of formula (1c) and n is 0; or 1, as light-protective agents.Type: GrantFiled: January 23, 2002Date of Patent: October 5, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Zink, Helmut Luther
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Patent number: 6706930Abstract: There is described a process for the preparation of halogenated hydroxydiphenyl compounds of formula (1) by acylation of a halogenated benzene compound (first stage), etherification of the acylated compound with a halogenated phenol compound, which is not further substituted in the ortho-position (second stage), oxidation of the etherified compound (third stage) and hydrolysis of the oxidized compound in a fourth stage, wherein the reaction of the second stage is carried out in the presence of K2CO3 and any desired copper catalyst, where K2CO3 is used in a concentration of from 0.5 to 30 mol, based on the phenol compound employed of formula (6), according to the reaction scheme (I) in which R1 and R2 independently of one another are F, Cl or Br; R3 and R4 independently of one another are hydrogen; or C1-C4alkyl; m is 1 to 3; and n is 1 or 2. The compounds of formula (1) are used for protecting organic materials and articles from microorganisms.Type: GrantFiled: October 31, 2002Date of Patent: March 16, 2004Assignee: Ciba Specialty Chemicals CorporationInventors: Armando Di Teodoro, Werner Hölzl, Dieter Reinehr, Rudolf Zink
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Publication number: 20040013619Abstract: The present invention provides compounds having the formula (1) in which each of the radicals R1, R2, R3 and R4, independently, represent hydrogen, hydroxy, halogen, C1-C20-alkyl, C1-C20-alkoxy, CN or COOR5, in which R5 is C1-C20-alkyl and Z represents a heterocyclic residue selected from the 2H-benzo[1,2-d]triazol-2-yl, 2H-naphtho[1,2-d]triazol-2-yl, benzimidazol-2-yl, benzoxazol-2-yl and benzofuran-2-yl moieties, optionally substituted by C1-C4-alkyl, C1-C4-alkoxy, halogen or NHCOC1-C4-alkyl, a process for their preparation, new intermediate benzoxazinones useful for their preparation and use of the compounds of formula (1) as UV-absorbers which have improved absorption spectrum characteristics, superior resistance to exposure to UV light and excellent thermal stability, relative to known triphenyltriazine compounds.Type: ApplicationFiled: March 31, 2003Publication date: January 22, 2004Inventors: Dieter Reinehr, Hanspeter Sauter, Rudolf Zink
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Publication number: 20030163005Abstract: There is described a process for the preparation of halogenated hydroxydiphenyl compounds of formula (1) by acylation of a halogenated benzene compound (first stage), etherification of the acylated compound with a halogenated phenol compound, which is not further substituted in the ortho-position (second stage), oxidation of the etherified compound (third stage) and hydrolysis of the oxidized compound in a fourth stage, wherein the reaction of the second stage is carried out in the presence of K2CO3 and any desired copper catalyst, where K2CO3 is used in a concentration of from 0.5 to 30 mol, based on the phenol compound employed of formula (6), according to the reaction scheme (I) in which R1 and R2 independently of one another are F, Cl or Br; R3 and R4 independently of one another are hydrogen; or C1-C4alkyl; m is 1 to 3; and n is 1 or 2. The compounds of formula (1) are used for protecting organic materials and articles from microorganisms.Type: ApplicationFiled: October 31, 2002Publication date: August 28, 2003Inventors: Armando Di Teodoro, Werner Holzl, Dieter Reinehr, Rudolf Zink
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Patent number: 6596907Abstract: A description is given of a three-step process for the preparation of 4,4′-dihalogen-o-hydroxydiphenyl compounds of formula (1) which comprises: a) hologenating an alkoxyphenol of formula (6) (=a1), reacting the resulting halogenated phenol compound of formula (5) with p-dihalobenzene of formula (4a) in the presence of copper and/or copper salts to the diphenyl ether compound of formula (2) (=a2) and subsequent ether fission to the diphenyl ether compound of formula (1) (=a3); or b) reacting an alkoxyphenol of formula (6) with the halophenol of formula (4b) to the compound of formula (3) (=b1), then halogenating this compound (=b2) and subsequent ether fission of the resulting compound of formula (2) to the diphenyl ether compound of formula (1) (=b3). The compounds of formula (1) are used for protecting organic materials and objects against microorganisms.Type: GrantFiled: April 3, 2001Date of Patent: July 22, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Armando Di Teodoro, Werner Hölzl, Dieter Reinehr, Rudolf Zink
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Publication number: 20020128522Abstract: Disclosed is a four-step process for the preparation of 4,4′-dihalogen-o-hydroxydiphenyl compounds of formula 1Type: ApplicationFiled: May 2, 2002Publication date: September 12, 2002Inventors: Armando Di Teodoro, Werner Holzl, Dieter Reinehr, Rudolf Zink
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Publication number: 20020103197Abstract: There is described the use of indoline derivatives of formula 1Type: ApplicationFiled: January 23, 2002Publication date: August 1, 2002Inventors: Rudolf Zink, Helmut Luther
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Patent number: 6384284Abstract: A description is given of diphenyl compounds of formula wherein R is a camphor or hydantoin derivative; and R1 is hydrogen; or C1-C5alkyl. These compounds are suitable as light stabilizers in cosmetic, pharmaceutical and veterinary formulations.Type: GrantFiled: March 29, 2001Date of Patent: May 7, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Zink, Dieter Reinehr, Helmut Luther, Bernd Herzog
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Patent number: 6358496Abstract: There is described the use of indoline derivatives of formula wherein R1 is hydrogen; C1-C5alkyl; C1-C18alkoxy; or halogen; R2 is C1-C8alkyl; C5-C7cycloalkyl; C6-C10aryl; R3 is C1-C18alkyl or a radical of formula R4 is hydrogen; or a radical of formula R5 is C1-C18alkoxy; or a radical of formula R6 and R7 are each independently of the other hydrogen; or C1-C5alkyl; R8 is hydrogen; C1-C5alkyl; C5-C7cycloalkyl; phenyl; phenyl-C1-C3alkyl; R9 is C1-C18alkyl; X is halogen; a radical of formula n is 0; or 1, as light-protective agents.Type: GrantFiled: March 29, 2001Date of Patent: March 19, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Zink, Helmut Luther
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Patent number: 6215029Abstract: A process for the preparation of halohydroxydiphenyl compounds useful for protecting organic materials and articles from microorganisms, of the formula by acylation of a halogenated benzene compound (first stage), etherification of the acylated compound with a halogenated phenol compound (second stage), oxidation of the etherified compound (third stage) and hydrolysis of the oxidized compound in a fourth stage, according to the following reaction scheme: in which R1 and R2 independently of one another are F, Cl or Br; R3 and R4 independently of one another are hydrogen; or C1-C4alkyl; m is 1 to 3; and n is 1 or 2.Type: GrantFiled: June 9, 1999Date of Patent: April 10, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Urs Burckhardt, Armando Di Teodoro, Werner Hölzl, Dieter Reinehr, Rudolf Zink, Hanspeter Sauter, Uwe Gronde
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Patent number: 6201000Abstract: The invention is related to a composition containing benzotriazole derivatives of formula (I) and the method of treating skin damages due to harmful UV radiation using this claimed composition.Type: GrantFiled: May 18, 1999Date of Patent: March 13, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Helmut Luther, Dieter Reinehr, Rudolf Zink
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Patent number: 6143904Abstract: The invention describes a color former mixture comprising(a) a compound of formula (1) and/or of formula (2) and/or of formula (3) and(b) a compound of formula (4),or a color former mixture comprising at least two compounds of component (b).The color former mixture is suitable for pressure- and particularly for heat-sensitive recording materials and has excellent storage ability and superior paper whiteness.Type: GrantFiled: June 17, 1997Date of Patent: November 7, 2000Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Zink, Klaus Huber
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Patent number: 5681791Abstract: The invention describes a colour former mixture comprising(a) a compound of formula (1) and/or of formula (2) and/or of formula (3) and(b) a compound of formula (4),or a colour former mixture comprising at least two compounds of component (b).The colour former mixture is suitable for pressure- and particularly for heat-sensitive recording materials and has excellent storage ability and superior paper whiteness.Type: GrantFiled: July 12, 1995Date of Patent: October 28, 1997Assignee: Ciba-Geigy CorporationInventors: Rudolf Zink, Klaus Huber
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Patent number: 5468855Abstract: The invention relates to bislactone color formers having improved fastness to sublimation and migration stability, to their preparation, to pressure-sensitive and heat-sensitive recording materials containing said compounds and to their preparation. The novel bislactones have the formula (1) as defined in claim 1.Type: GrantFiled: August 31, 1994Date of Patent: November 21, 1995Assignee: Ciba-Geigy CorporationInventor: Rudolf Zink
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Patent number: 5395948Abstract: The invention relates to fluoran colour formers having improved fastness to sublimation and migration stability, to their preparation, to pressure-sensitive and heat-sensitive recording materials containing said compounds and to their preparation. The fluorans have the formula (I) as defined in claim 1.Type: GrantFiled: March 10, 1993Date of Patent: March 7, 1995Assignee: Ciba-Geigy CorporationInventor: Rudolf Zink
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Patent number: 5254522Abstract: A pressure-sensitive or heat-sensitive recording material essentially comprising in its color reactant system(A) an aromatic or nitrogen-containing heterocyclic aldehyde,(B) an organic condensation component containing an activated methylene group or a primary or secondary nitrogen atom, preferably a primary amino group, and(C) an electrophilic and color-developing component.Type: GrantFiled: March 26, 1991Date of Patent: October 19, 1993Assignee: Ciba-Geigy CorporationInventors: Rudolf Zink, Peter Mockli, Peter Rohringer
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Patent number: 5240897Abstract: A heat-sensitive recording material which contains(A) a polycyclic compound of the formula ##STR1## in which X is a monocyclic or polycyclic aromatic or heteroaromatic radical,Y is a substituent detachable as an anion,Q.sub.1 is --O--, --S--, >N--R or >N--NH--R,Q.sub.2 is --CH.sub.2 --, --CO--, --CS-- or --SO.sub.2 -- andR is hydrogen, C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.10 cycloalkyl, aryl such as phenyl or aralkyl such as benzyl, andring A is an aromatic or heterocyclic radical having 6 ring atoms, which can have an aromatic fused ring, it being possible for both ring A and the fused ring to be substituted, and(B) an organic condensable complex compound of a zinc salt.Type: GrantFiled: November 13, 1990Date of Patent: August 31, 1993Assignee: Ciba-Geigy CorporationInventors: Rosalinde Braun, Rudolf Zink
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Patent number: 5162550Abstract: Bisphthalide lactones of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen, alkyl of at most 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxy, cyano, tetrahydrofuryl or lower alkoxy; or are acyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 10 carbon atoms or unsubstituted aralkyl or aryl, or aralkyl or aryl each substituted by halogen, cyano, nitro, trifluormethyl, lower alkyl, lower alkoxy, lower alkoxycarbonyl, --NX'X"-- or 4--NX'X--"phenylamino, wherein X' and X" are each independently of the other hydrogen, lower alkyl, cyclohexyl, benzyl or phenyl, or the pairs of substituents --NR.sub.1 R.sub.2 and --NR.sub.3 R.sub.4 are each a 5- or 6-membered, preferably saturated, heterocyclic radical, V.sub.1 and V.sub.2 are hydrogen, halogen, lower alkyl, C.sub.1 -C.sub.12 alkoxy, C.sub.1 -C.sub.Type: GrantFiled: August 24, 1990Date of Patent: November 10, 1992Assignee: Ciba-Geigy CorporationInventors: Rudolf Zink, Ian J. Fletcher
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Patent number: 5149689Abstract: Fluoran color former mixtures which contain at least(a) a fluoran compound of the formula ##STR1## (b) a fluoran compound of the formula ##STR2## in which R.sub.1, R.sub.3 and R.sub.4 are hydrogen, halogen, lower alkyl or lower alkoxy,R.sub.2 is halogen, lower alkyl or lower alkoxy,X.sub.1, X.sub.2, Y.sub.1 and Y.sub.2 are hydrogen, unsubstituted or halogen, hydroxyl, cyano or (lower alkoxy)-substituted alkyl, cycloalkyl, aryl or aralkylX.sub.3 and Y.sub.3 are hydrogen, unsubstituted or halogenhydroxyl-, cyano- or (lower alkoxy)-substituted alkyl, cycloalkyl, aryl or aralkyl,X.sub.4 and Y.sub.4 are unsubstituted or halogen-, hydroxyl-, cyano- or (lower alkoxy)-substituted alkyl, cycloalkyl or aralkyl or(X.sub.1 and X.sub.2), (X.sub.3 and X.sub.4), (Y.sub.1 and Y.sub.2) and (Y.sub.3 and Y.sub.Type: GrantFiled: December 20, 1991Date of Patent: September 22, 1992Assignee: Ciba-Geigy CorporationInventor: Rudolf Zink