Patents by Inventor Vratislav Kvita
Vratislav Kvita 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: 5391749Abstract: Substituted naphthacenediones of the formula I ##STR1## in which R.sup.1 to R.sup.8 are H and at least one of R.sup.1 to R.sup.8, for example R.sup.2 and R.sup.3 or R.sup.2 and R.sup.6, are, for example, C.sub.1 -C.sub.20 alkoxy, C.sub.1 -C.sub.20 alkenoxy, C.sub.1 -C.sub.20 -alkylsulfinyl, --CN, --CF.sub.3, --NO.sub.2, --Si(CH.sub.3).sub.3 or --COO(C.sub.1 -C.sub.12 alkyl), are suitable, when incorporated into polymers having hydroxyalkyl groups, for currentless deposition of metals onto the polymer surface. They are in some cases suitable as photoinitiators.Type: GrantFiled: February 28, 1992Date of Patent: February 21, 1995Assignee: Ciba-Geigy CorporationInventors: Walter Fischer, Marcus Baumann, Jurgen Finter, Vratislav Kvita, Carl W. Mayer, Wolfgang Wernet
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Patent number: 5220048Abstract: Benzocyclobutene-1,2-dichlorides, -bromides and -iodides which are substituted in the benzene ring are accessible in good yields and short reaction times by reacting substituted 1,2-(dichloromethyl or dibromomethyl)-benzenes with NaI in acetonitrile as the solvent. They can be used together with dienophils, for example 1,4-quinones, in Diels-Alder reactions.Type: GrantFiled: May 24, 1989Date of Patent: June 15, 1993Assignee: Ciba-Geigy CorporationInventors: Marcus Baumann, Walter Fischer, Vratislav Kvita, Carl W. Mayer
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Patent number: 5112977Abstract: Substituted naphthacenediones of the formula I ##STR1## in which R.sup.1 to R.sup.8 are H and at least one of R.sup.1 to R.sup.8, for example R.sup.2 and R.sup.3 or R.sup.2 and R.sup.6, are, for example, C.sub.1 -C.sub.20 alkoxy, C.sub.1 -C.sub.20 alkenoxy, C.sub.1 -C.sub.20 -alkylsulfinyl, --CN, --CF.sub.3, --NO.sub.2, --Si(CH.sub.3).sub.3 or --COO(C.sub.1 -C.sub.12 alkyl), are suitable, when incorporated into polymers having hydroxyalkyl groups, for currentless deposition of metals onto the polymer surface. They are in some cases suitable as photoinitiators.Type: GrantFiled: May 24, 1989Date of Patent: May 12, 1992Assignee: Ciba-Geigy CorporationInventors: Walter Fischer, Marcus Baumann, Jurgen Finter, Vratislav Kvita, Carl W. Mayer, Wolfgang Wernet
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Patent number: 5011944Abstract: .alpha.-Pyrones of the formula I ##STR1## in which R.sup.1 is --CF.sub.3 or --COOR.sup.3 and R.sup.3 is the radical of a C.sub.1 -C.sub.18 alcohol diminished by a hydroxyl group, and R.sup.2 is --F, --Br, --Cl, --CN, --CF.sub.3, C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.18 alkenyl, C.sub.2 -C.sub.18 alkynyl, C.sub.1 -C.sub.18 alkoxy, C.sub.1 -C.sub.18 alkylthio, C.sub.1 -C.sub.18 alkylsulfonyl, C.sub.6 -C.sub.16 aryl, C.sub.7 -C.sub.24 alkaryl, C.sub.7 -C.sub.12 aralkyl, C.sub.8 -C.sub.24 alkaralkyl, C.sub.6 -C.sub.16 aryloxy, C.sub.6 -C.sub.16 arylthio, C.sub.6 -C.sub.16 arylsulfonyl, C.sub.7 -C.sub.24 alkaryloxy, C.sub.7 -C.sub.24 alkarylthio, C.sub.7 -C.sub.24 alkarylsulfonyl, C.sub.7 -C.sub.12 aralkyloxy, C.sub.7 -C.sub.12 aralkylthio, C.sub.7 -C.sub.12 aralkylsulfonyl, C.sub.8 -C.sub.24 alkaralyloxy, C.sub.8 -C.sub.24 alkaralylthio, C.sub.8 -C.sub.24 alkaralylsulfonyl, secondary amine having 2 to 24 C atoms or trialkylsilyl or trialkoxysilyl each of which has 3 to 18 C atoms.Type: GrantFiled: May 24, 1989Date of Patent: April 30, 1991Assignee: Ciba-Geigy CorporationInventors: Vratislav Kvita, Marcus Baumann, Walter Fischer, Carl W. Mayer, Thomas Allmendinger
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Patent number: 5004814Abstract: The invention relates to .alpha.-pyrones of formula I ##STR1## wherein R.sup.1 is chloro or bromo and R.sup.2 is hydrogen, chloro or bromo. The halogen in 4-position can be replaced, for example, by alkoxy, alkylthio or secondary amino. The .alpha.-pyrones are suitable diene components for Diels-Alder reactions.Type: GrantFiled: October 16, 1989Date of Patent: April 2, 1991Assignee: Ciba-Geigy CorporationInventor: Vratislav Kvita
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Patent number: 5001243Abstract: Naphthacene-5,12-diones which are substituted by at least one organic thio radical are not only photoinitiators for the photopolymerization but also sensitizers for the photodimerization of ethylenically unsaturated compounds. Compositions made of these naphthacene-5,12-diones and ethylenically unsaturated compounds are suitable for the preparation of printing inks, paints, printing plates, resist materials or as image recording material.Type: GrantFiled: May 24, 1989Date of Patent: March 19, 1991Assignee: Ciba-Geigy CorporationInventors: Walter Fischer, Marcus Baumann, Jurgen Finter, Vratislav Kvita, Carl W. Mayer, Manfred Rembold, Martin Roth
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Patent number: 4981962Abstract: Substituted tetrathiotetracenes and tetraselenotetracenes of the formula I ##STR1## in which Z is --S-- or --Se-- and (a) R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are H and R.sup.5 to R.sup.8 are each H and at least one of the radicals R.sup.5 to R.sup.8 independently of one another is a substituent belonging to the group comprising C.sub.1 -C.sub.20 alkyl--X--.sub.p which is unsubstituted or substituted by halogen, --CN, --CONR.sup.9 R.sup.10, --OR.sup.9, --SR.sup.9 or --COOR.sup.9, with the exception of C.sub.1 -C.sub.4 alkyl and methoxy, C.sub.2 -C.sub.18 alkenyl--X--.sub.p, C.sub.2 -C.sub.18 -alkynyl--X--.sub.p, C.sub.3 -C.sub.8 cycloalkyl--X--.sub.p, (C.sub.1 -C.sub.12 alkyl)--C.sub.3 -C.sub.8 cycloalkyl--X--.sub.p, C.sub.3 -C.sub.8 cycloalkyl-C.sub.r H.sub.2r --X--.sub.p, (C.sub.1 -C.sub.12 alkyl)-C.sub.3 -C.sub.8 -cyclo alkyl-C.sub.r H.sub.2r --X--.sub.p, phenyl--X--.sub.p, (C.sub.1 -C.sub.12)alkyl)-phenyl--X--, phenyl-C.sub.r H.sub. 2r --X--.sub.p and (C.sub.1 -C.sub.12 alkyl)-phenyl-C.sub.r H.sub.Type: GrantFiled: May 24, 1989Date of Patent: January 1, 1991Assignee: Ciba-Geigy CorporationInventors: Marcus Baumann, Walter Fischer, Vratislav Kvita, Carl W. Mayer, Wolfgang Wernet
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Patent number: 4762926Abstract: The invention relates to 2-substituted 5-vinylpyrimidines of the formula ##STR1## wherein X is 2-pyridyl or 2-pyrimidyl, unsubstituted or substituted by methyl or ethyl groups. The compounds of formula (I) are suitable for the preparation of complex-forming or complexed, uncrosslinked or crosslinked polymers. Complexed polymers obtainable therefrom may be used as catalysts. Polymers complexed with Pd are particularly suitable for transvinylation reactions. Non-complexed polymers obtainable from compounds of formula (I) are suitable for use as metal ion extractors for different applications. The 2-substituted-5-vinylpyrimidines are prepared by the reaction of 5-formyl-alpha-pyrone with a secondary amine to form an alpha-vinyl-beta-secondary-aminoacrolein which is then condensed with a substituted amidine base to give the title compounds.Type: GrantFiled: December 16, 1985Date of Patent: August 9, 1988Assignee: Ciba-Geigy CorporationInventors: Vratislav Kvita, Jurgen Kaschig
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Patent number: 4617151Abstract: 2- or 2,3-substituted 5,6,11,12-tetraseleneotetracene or -tetrathiotetracene of the formula ##STR1## in which X is S or Se, R is alkoxy, hydroxyalkoxy, aryloxy, cycloalkoxy, aralkoxy, --OH, --NH.sub.2, --Cl, --Br or substituted amino and Y is hydrogen or --COR. The compounds can be bonded as side groups to polymers. The polymers and the compounds combine with electron acceptors to form charge transfer complexes which can be used as electrically conductive layers.Type: GrantFiled: March 15, 1985Date of Patent: October 14, 1986Assignee: Ciba-Geigy CorporationInventors: Carl W. Mayer, Vratislav Kvita, Josef Pfeifer
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Patent number: 4609741Abstract: Novel phthalic acid derivatives are described which are substituted by 2-propynyloxy groups, of the formula I ##STR1## in which Q.sub.1, and Q.sub.2 independently of one another are --OH or --O.sup.- M.sup.+, or Q.sub.1 and Q.sub.2 together form the grouping --O--, [O.sup.- ].sub.2 M.sub.1.sup.++ or --N(R.sub.2)--, M.sup.+ is an alkali metal ion, a trialkyl ammonium ion having 3-24 carbon atoms or a quaternary ammonium ion and M.sub.1.sup.++ is an alkaline earth metal ion, R.sub.2 is an alkyl group or an unsubstituted or substituted aryl group, n is 1 or 2 and R.sub.1 is hydrogen, if n is 1, or a direct bond, if n is 2, are described. The phthalic anhydrides which are substituted by 2-propynyloxy, of the formula I, can be used for curing epoxy resins, cured products with outstanding physical properties being obtained.Type: GrantFiled: August 9, 1984Date of Patent: September 2, 1986Assignee: Ciba-Geigy CorporationInventors: Roland Darms, Vratislav Kvita, Charles E. Monnier
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Patent number: 4594400Abstract: Thioxanthone carboxylic acid esters, thioesters and amides with reactive functional groups of the formula ##STR1## in which X, Y, Z, n and Q are as defined in the patent claim and Q is, for example, --OCH.dbd.CH.sub.2, --OCH.sub.2 CH.dbd.CH.sub.2, --SCH.sub.2 CH.dbd.CH.sub.2 or --NHCH.sub.2 CH.dbd.CH.sub.2 (n=1), --OH, --SH, --NH.sub.2, --COOH, --COCl or --OCO--C(R").dbd.CH.sub.2, in which R" is methyl or hydrogen (n=2), are suitable for the preparation of polymers with thioxanthone radicals in side chains. The compounds (I) and also the polymers which can be prepared therefrom can be employed as sensitizers for photocrosslinkable polymers or as initiators, if desired in a mixture with amines, for the photopolymerization of ethylenically unsaturated compounds or for the photochemical crosslinking of polyolefines.Type: GrantFiled: September 19, 1984Date of Patent: June 10, 1986Assignee: Ciba-Geigy CorporationInventors: Vratislav Kvita, Hans Zweifel, Martin Roth, Louis Felder
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Patent number: 4582881Abstract: The invention relates to 2-substituted 5-vinylpyrimidines of the formula ##STR1## wherein X is 2-pyridyl or 2-pyrimidyl, unsubstituted or substituted by methyl or ethyl groups. The compounds of formula (I) are suitable for the preparation of complex-forming or complexed, uncrosslinked or crosslinked polymers. Complexed polymers obtainable therefrom may be used as catalysts. Polymers complexed with Pd are particularly suitable for transvinylation reactions. Non-complexed polymers obtainable from compounds of formula (I) are suitable for use as metal ion extractors for different applications.Type: GrantFiled: July 10, 1984Date of Patent: April 15, 1986Assignee: Ciba-Geigy CorporationInventors: Vratislav Kvita, Jurgen Kaschig
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Patent number: 4505794Abstract: Thioxanthonecarboxylic acid esters, thioesters or amides of the formula I ##STR1## in which X and Z are hydrogen or one of the substituents defined in more detail in claim 1 and Y is --OR.sub.1, --SR.sub.1 or --N(R.sub.1)(R.sub.2), in which R.sub.1 is C.sub.1-24 alkyl and R.sub.2 is H or R.sub.1, are suitable, if desired together with amines, as initiators for the photopolymerization of ethylenically unsaturated compounds or for photochemical crosslinking of polyolefines. They are also used as sensitizers for photocrosslinkable polymers. They can be prepared by methods known per se, for example by cyclization of phenylthio-phthalic, -isophthalic or -terephthalic acids, which can be correspondingly substituted, and subsequent reaction with suitable alcohols, thiols or amines.Type: GrantFiled: September 23, 1982Date of Patent: March 19, 1985Assignee: Ciba-Geigy CorporationInventors: Vratislav Kvita, Hans Zweifel, Martin Roth, Louis Felder
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Patent number: 4506083Abstract: Thioxanthonecarboxylic acid esters, thioesters or amides of the formula I ##STR1## in which X and Z are hydrogen or one of the substituents defined in more detail in claim 1 and Y is --OR.sub.1, --SR.sub.1 or --N(R.sub.1)(R.sub.2), in which R.sub.1 is C.sub.1-24 alkyl and R.sub.2 is H or R.sub.1, are suitable, if desired together with amines, as initiators for the photopolymerization of ethylenically unsaturated compounds or for photochemical crosslinking of polyolefines. They are also used an sensitizers for photocrosslinkable polymers. They can be prepared by methods known per se, for example by cyclization of phenylthio-phthalic, -isophthalic or -terephthalic acids, which can be correspondingly substituted, and subsequent reaction with suitable alcohols, thiols or amines.Type: GrantFiled: June 28, 1982Date of Patent: March 19, 1985Assignee: Ciba-Geigy CorporationInventors: Vratislav Kvita, Hans Zweifel, Martin Roth, Louis Felder
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Patent number: 4480105Abstract: Novel compounds of the formula II ##STR1## are described, in which M.sub.1 and M.sub.2 individually are --OH or together are --O--, X is --NO.sub.2, --OR', --SR' or SO.sub.2 R' and the (R')s independently of one another are C.sub.1-20 -alkyl, C.sub.3-5 -alkenyl, C.sub.3-5 -alkynyl, C.sub.2-4 -monohydroxyalkyl, C.sub.1-12 -halogenoalkyl, benzyl, C.sub.5-12 -cycloalkyl, phenyl, carboxyphenyl, halogenophenyl, nitrophenyl, alkyl- or alkoxy-phenyl each having 1-4 C atoms in the alkyl or alkoxy moieties, or acetylaminophenyl, such as for example 3-n-butylthio-5-nitrophthalic anhydride. The compounds (II) in which M.sub.1 and M.sub.2 together are --O-- are suitable as sensitizers for photo-crosslinkable polymers or as initiators for the photopolymerization of ethylenically unsaturated compounds or for the photochemical crosslinking of polyolefins, and those where M.sub.1 and M.sub.2 are --OH are useful intermediates for those wherein M.sub.1 and M.sub.2 together are --O--.Type: GrantFiled: April 30, 1982Date of Patent: October 30, 1984Assignee: Ciba-Geigy CorporationInventors: Walter Fischer, Vratislav Kvita, Hans Zweifel
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Patent number: 4476305Abstract: The invention relates to 2-substituted 5-vinylpyrimidines of the formula ##STR1## wherein X is 2-pyridyl or 2-pyrimidyl, unsubstituted or substituted by methyl or ethyl groups. The compounds of formula (I) are suitable for the preparation of complex-forming or complexed, uncrosslinked or crosslinked polymers. Complexed polymers obtainable therefrom may be used as catalysts. Polymers complexed with Pd are particularly suitable for transvinylation reactions. Non-complexed polymers obtainable from compounds of formula (I) are suitable for use as metal ion extractors for different applications.Type: GrantFiled: June 7, 1982Date of Patent: October 9, 1984Assignee: Ciba-Geigy CorporationInventors: Vratislav Kvita, Jurgen Kaschig
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Patent number: 4385182Abstract: Novel thioxanthonecarboxylic acids and thioxanthonecarboxylic acid derivatives of the formula I ##STR1## in which Y is --COOH, --CO-halogen, --CN or a carboxylic acid ester, thioester or amide group and X, Z and W are as defined in the patent claim, are described. The compounds of the formula I in which Y is other than --CO--halogen are suitable as sensitizers for photo-crosslinkable polymers or as initiators for photo-polymerization of ethylenically unsaturated compounds or for photo-chemical crosslinking of polyolefins. The acid halides of the formula I are starting materials for the preparation of the corresponding nitriles and carboxylic acid esters, thioesters and amides.Type: GrantFiled: April 28, 1981Date of Patent: May 24, 1983Assignee: Ciba-Geigy CorporationInventors: Walter Fischer, Vratislav Kvita, Hans Zweifel, Louis Felder
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Patent number: 4367324Abstract: Photocrosslinkable polymers which have a mean molecular weight of not less than 5,000 and contain, in side chains, thioxanthone groupings of the formula ##STR1## and, in side chains, imidyl groupings of the formula ##STR2## in which X, Y, Z, n, G.sub.1 and G.sub.2 are as defined in the patent claim, are suitable for the production of highly light-sensitive image materials, for the production of printing plates for the offset printing process and in particular as so-called photoresists for the production of printed circuits. The thioxanthone groupings (I) act as sensitizers for the photocrosslinkable groups of the polymer, so that it is not necessary to add further sensitizers.Type: GrantFiled: January 26, 1981Date of Patent: January 4, 1983Assignee: Ciba-Geigy CorporationInventors: Hans Zweifel, Joseph Berger, Vratislav Kvita, Martin Roth
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Patent number: 4365068Abstract: New crosslinkable bis-imidyl derivatives are described which can be produced by reaction of imidylphthalic acid derivatives, such as maleimidyl-phthalic acid anhydrides, with monomeric, oligomeric or polymeric diamines. The new crosslinkable bis-imidyl derivatives can be used for producing crosslinked polymers which are distinguished, in particular, by their stability to oxidation and to heat.Type: GrantFiled: November 14, 1980Date of Patent: December 21, 1982Assignee: Ciba-Geigy CorporationInventors: Roland Darms, Vratislav Kvita, Gerd Greber
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Patent number: 4363917Abstract: Novel compounds of the formula I or II ##STR1## are described, in which M.sub.1 and M.sub.2 individually are --OH or together are --O--, R is hydrogen, C.sub.1-20 -alkyl, C.sub.2-5 -alkenyl, C.sub.3-5 -alkynyl, C.sub.5-12 -cycloalkyl, benzyl, phenyl or toluyl, X is --NO.sub.2, --OR', --SR' or --SO.sub.2 R' and the (R')s independently of one another are C.sub.1-20 -alkyl, C.sub.3-5 -alkenyl, C.sub.3-5 -alkynyl, C.sub.2-4 -monohydroxyalkyl, C.sub.1-12 -halogenoalkyl, benzyl, C.sub.5-12 -cycloalkyl, phenyl, carboxyphenyl, halogenophenyl, nitrophenyl, alkyl- or alkoxy-phenyl each having 1-4 C atoms in the alkyl or alkoxy moieties, or acetylaminophenyl. The compounds (I) and compounds (II) in which M.sub.1 and M.sub.2 together are --O-- are suitable as sensitizers for photocrosslinkable polymers or as initiators for the photopolymerization of ethylenically unsaturated compounds or for the photochemical crosslinking of polyolefins.Type: GrantFiled: April 28, 1981Date of Patent: December 14, 1982Assignee: Ciba-Geigy CorporationInventors: Walter Fischer, Vratislav Kvita, Hans Zweifel