Patents by Inventor Bruno Hilti
Bruno Hilti 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: 6310128Abstract: A polyoxyalkylene compound and an inorganic salt are used to reduce the tendency of halogen-containing polymers to build up electrostatic charge and at the same time to achieve good stability.Type: GrantFiled: June 24, 1996Date of Patent: October 30, 2001Assignee: Witco Vinyl Additives GmbHInventors: Bruno Hilti, Ernst Minder, Jürgen Pfeiffer, Rolf Drewes
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Patent number: 5965206Abstract: The invention relates to a composition that comprises a thermoplastic or elastomeric polymeric substrate (A) and an antistatic mixture (B) in the form of contiguous fibers, which mixture comprises (b1) an organic polymeric material that is fibrous or forms fibers on mixing and is not soluble in the thermoplastic or elastomeric polymeric substrate (A); (b2) a polymer or copolymer capable of ion conduction that has blocks for complexing or solvating a salt of an inorganic or low-molecular-weight organic protonic acid (b3) and has a better compatibility with the organic polymer (b1) that is fibrous or forms fibers on mixing than with the polymeric organic substrate (A); and (b3) a salt of an inorganic or low-molecular-weight organic protonic acid such as NaClO.sub.4 or K P F.sub.6 that has been complexed or solvated in the polymer or copolymer (b2).Type: GrantFiled: September 8, 1997Date of Patent: October 12, 1999Assignee: Ciba Specialty Chemicals CorporationInventors: Bruno Hilti, Ernst Minder, Jurgen Pfeiffer, Markus Grob
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Patent number: 5955517Abstract: The invention relates to a composition comprising a thermoplastic, structurally crosslinked elastomeric or thermosetting polymer, which comprises(a) a polar, adsorptive inorganic or organic material in the form of fibres or particles which are in mutual contact, onto which is adsorptively bound(b) a polar antistatic agent comprising a mixture ofb1) at least one polar organic compound having at least 5 carbon atoms and at least 3 heteroatoms, andb2) the salt of an inorganic protic acid, which is solvated or complexed in the polar organic compound. The invention also relates to a second composition comprising b) a polar inorganic or organic material, b1) a polar organic compound having at least 5 carbon atoms and at least 3 heteroatoms and b2) an inorganic salt, to the use of this second composition for the antistatic treatment of polymers, and to a process for preparing antistatically treated polymers.Type: GrantFiled: July 29, 1998Date of Patent: September 21, 1999Assignee: Ciba Specialty Chemicals CorporationInventors: Bruno Hilti, Markus Burkle, Jurgen Pfeiffer, Ernst Minder, Markus Grob
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Patent number: 5871670Abstract: A composition comprising a matrix of a thermoplastic, thermosetting or a structurally crosslinked polymer, in which is incorporated an electroconductive network of crystal needles of a charge transfer complex (abbreviated to CT complex) from an electron donor and an electron acceptor, characterized in that:(1) the matrix contains uniformly distributed an excess, with respect to the CT complex formation, either of at least one electron donor or at least one electron acceptor as weakly polymer-soluble finely divided particles,(2) the CT complex is formed either by at least one weakly polymer-soluble electron donor and at least one polymer-soluble electron acceptor or by at least one weakly polymer-soluble electron acceptor and at least one polymer-soluble electron donor, and(3) microcrystalline needles grow from the weakly polymer-soluble particles in the polymer mass, which microcrystalline needles are in contact with and connect the weakly polymer-soluble particles to form a network which penetrates the polymType: GrantFiled: March 3, 1997Date of Patent: February 16, 1999Assignee: Ciba Specialty Chemicals CorporationInventors: Bruno Hilti, Ernst Minder, Jurgen Pfeiffer
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Patent number: 5814688Abstract: The invention relates to a composition comprising a thermoplastic, structurally crosslinked elastomeric or thermosetting polymer, which comprises(a) a polar, adsorptive inorganic or organic material in the form of fibers or particles which are in mutual contact, onto which is adsorptively bound(b) a polar antistatic agent comprising a mixture ofb1) at least one polar organic compound having at least 5 carbon atoms and at least 3 heteroatoms, andb2) the salt of an inorganic protic acid, which is solvated or complexed in the polar organic compound. The invention also relates to a second composition comprising b1) a polar inorganic or organic material, b) a polar organic compound having at least 5 carbon atoms and at least 3 heteroatoms and b2) an inorganic salt, to the use of this second composition for the antistatic treatment of polymers, and to a process for preparing antistatically treated polymers.Type: GrantFiled: February 4, 1997Date of Patent: September 29, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Bruno Hilti, Markus Burkle, Jurgen Pfeiffer, Ernst Minder, Markus Grob
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Patent number: 5616287Abstract: The action of thermoplastic polymers to whose polymer backbone aliphatic or cycloaliphatic groups are bonded via a group --O--, --O--CO--, --CO--OR.sup.22 --OCO-- or --CO--O--, said aliphatic or cycloaliphatic groups being substituted by Cl, Br and/or iodine in the .alpha.-, .beta.-, .gamma.- or .omega.-position, on an unsubstituted or substituted tetrathio-, tetraseleno- or tetratelluro-naphthalene or -tetracene contained in this polymer gives electrically conducting compositions by the formation of charge transfer complexes. These compositions are suitable for the production of antistatic or electrically conducting mouldings, sheets, filaments, fibres, coatings and composites.Type: GrantFiled: March 28, 1995Date of Patent: April 1, 1997Assignee: Ciba-Geigy CorporationInventors: Jurgen Finter, Bruno Hilti, Carl W. Mayer, Ernst Minder
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Patent number: 5504217Abstract: Radical cation salts having the composition of formula I ##STR1## wherein x has a value from -0.1 to +0.2. These radical cation salts crystallize in needle form and are electric conductors. They can be incorporated in polymers to form conductive networks of crystal needles in a polymer matrix. The polymers can be used for making antistatically treated mouldings or electrodes.Type: GrantFiled: October 31, 1994Date of Patent: April 2, 1996Assignee: Ciba-Geigy CorporationInventors: Bruno Hilti, Ernst Minder, Carl W. Mayer, Bernd Klingert
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Patent number: 5424372Abstract: The action of thermoplastic polymers to whose polymer backbone aliphatic or cycloaliphatic groups are bonded via a group --O--, --O--CO--, --CO--OR.sup.22 --OCO-- or --CO--O--, said aliphatic or cycloaliphatic groups being substituted by Cl, Br and/or iodine in the .alpha.--, .beta.--, .gamma.-- or .omega.-position, on an unsubstituted or substituted tetrathio-, tetraseleno- or tetratelluro-naphthalene or -tetracene contained in this polymer gives electrically conducting compositions by the formation of charge transfer complexes. These compositions are suitable for the production of antistatic or electrically conducting mouldings, sheets, filaments, fibres, coatings and composites.Type: GrantFiled: March 11, 1994Date of Patent: June 13, 1995Assignee: Ciba-Geigy CorporationInventors: Jurgen Finter, Bruno Hilti, Carl W. Mayer, Ernst Minder
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Patent number: 5387627Abstract: Radical cation salts having the composition of formula I ##STR1## wherein x has a value from -0.1 to +0.2. These radical cation salts crystallize in needle form and are electric conductors. They can be incorporated in polymers to form conductive networks of crystal needles in a polymer matrix. The polymers can be used for making antistatically treated mouldings or electrodes.Type: GrantFiled: November 16, 1993Date of Patent: February 7, 1995Assignee: Ciba-Geigy CorporationInventors: Bruno Hilti, Ernst Minder, Carl W. Mayer, Bernd Klingert
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Patent number: 5348762Abstract: A process for the production of a conductive layer on a substrate, said conductive layer comprising a network of crystal needles of conductive radical cation salts based on tetrathiotetracenes, tetraselenotetracenes or tetratellurotetracenes and chlorine, bromine, iodine or copper dichloride, and said network is embedded in a polymer matrix, by coating at least one side of said substrate with a) a suspension of crystal needles of the radical cation salts of formula I in an inch solvent which may additionally contain a thermoplastic polymer or at least one starting compound for a thermosetting polymer, or b) a solution (b1) of a tetrathiotetracene, tetraselenotetracene or tetratellurotetracene, (b2) of a monomeric, oligomeric or polymeric organic compound which contains chlorine, bromine or iodone and, when heated with these tetracenes, forms a radical cation salt, or of anhydrous CuCl.sub.2, a CuCl.sub.2 aquo complex or a CuCl.sub.Type: GrantFiled: May 14, 1993Date of Patent: September 20, 1994Assignee: Ciba-Geigy CorporationInventors: Walther Hofherr, Ernst Minder, Bruno Hilti, Jean-Philippe Ansermet
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Patent number: 5324791Abstract: The action of thermoplastic polymers to whose polymer backbone aliphatic or cycloaliphatic groups are bonded via a group --O--, --O--CO--, --CO--OR.sup.22 --OCO-- or --CO--O--, said aliphatic or cycloaliphatic groups being substituted by Cl, Br and/or iodine in the .alpha.-, .beta.-, .gamma.- or .omega.-position, on an unsubstituted or substituted tetrathio-, tetraseleno- or tetratelluronaphthalene or -tetracene contained in this polymer gives electrically conducting compositions by the formation of charge transfer complexes. These compositions are suitable for the production of antistatic or electrically conducting mouldings, sheets, filaments, fibres, coatings and composites.Type: GrantFiled: December 16, 1992Date of Patent: June 28, 1994Assignee: Ciba-Geigy CorporationInventors: Jurgen Finter, Bruno Hilti, Carl W. Mayer, Ernst Minder
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Patent number: 5284600Abstract: Radical cation salts having the composition of formula I ##STR1## wherein x has a value from -0.1 to +0.2. These radical cation salts crystallize in needle form and are electric conductors. They can be incorporated in polymers to form conductive networks of crystal needles in a polymer matrix. The polymers can be used for making antistatically treated mouldings or electrodes.Type: GrantFiled: June 29, 1992Date of Patent: February 8, 1994Assignee: Ciba-Geigy CorporationInventors: Bruno Hilti, Ernst Minder, Carl W. Mayer, Bernd Klingert
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Patent number: 5200113Abstract: The action of thermoplastic polymers to whose polymer backbone aliphatic or cycloaliphatic groups are bonded via a group --O--, --O--CO--, --CO--OR.sup.22 --OCO-- or --CO--O--, said aliphatic or cycloaliphatic groups being substituted by Cl, Br and/or iodine in the .alpha.-, .beta.-, .gamma.- or .omega.-position, on an unsubstituted or substituted tetrathio-, tetraseleno- or tetratelluronaphthalene or -tetracene contained in this polymer gives electrically conducting compositions by the formation of charge transfer complexes. These compositions are suitable for the production of antistatic or electrically conducting mouldings, sheets, filaments, fibres, coatings and composites.Type: GrantFiled: September 25, 1989Date of Patent: April 6, 1993Assignee: Ciba-Geigy CorporationInventors: Jurgen Finter, Bruno Hilti, Carl W. Mayer, Ernst Minder
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Patent number: 5177056Abstract: Compositions of a) thermosetting plastics or thermoplastics, and a mixture of such plastics, and b) a superconducting compound having a transition temperature T.sub.c of at least 20 K are suitable as moulding materials for the production of articles for magnetic screening of static magnetic fields and for transmitting of magnetic and electrical forces.Type: GrantFiled: August 18, 1988Date of Patent: January 5, 1993Assignee: Ciba-Geigy CorporationInventors: Bruno Hilti, Carl W. Mayer, Jurgen Pfeiffer, Manfred Hofmann, Max Hunziker
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Patent number: 5158829Abstract: Monolayer or multilayer systems containing compounds of the formula I ##STR1## in which X is S or Se, R.sup.1 is C.sub.1 -C.sub.30 alkyl, --CF.sub.3, --O--R.sup.3, --S--R.sup.3 or --CO--O--R.sup.3, R.sup.2 is hydrogen, C.sub.1 -C.sub.30 alkyl, --CF.sub.3, --O--R.sup.3, --S--R.sup.3 or --CO--O--R.sup.3, and R.sup.3 is C.sub.1 -C.sub.30 alkyl or partially or perfluorinated C.sub.1 -C.sub.30 alkyl, are described.Electrically conductive layers which are suitable, for example, for the production of electrically conductive coatings can be prepared from the layer systems by doping with electron acceptors.Type: GrantFiled: September 3, 1991Date of Patent: October 27, 1992Assignee: Ciba-Geigy CorporationInventors: Alex Wegmann, Bernd Tieke, Carl W. Mayer, Bruno Hilti, Walter Fischer, Wolfgang Wernet
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Patent number: 5153321Abstract: As a result of the action of electron acceptors, for example chlorine, bromine and/or iodine, on compositions containing a linear, branched or structurally crosslinked polymer and an unsubstituted or substituted tetrathionaphthalene, tetraselenonaphthalene, tetratelluronaphthalene, tetrathiotetracene, tetraselenotetracene or tetratellurotetracene, electrical conductivity is imparted to the compositions through the formation of charge-transfer complexes. These compositions are suitable for the production of mouldings, filaments, fibres, coatings and composite materials which have an antistatic finish or are electrically conducting.Type: GrantFiled: June 20, 1991Date of Patent: October 6, 1992Assignee: Ciba-Geigy CorporationInventors: Jurgen Finter, Bruno Hilti, Carl W. Mayer, Ernst Minder, Josef Pfeifer
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Patent number: 5108841Abstract: Monolayer or multilayer systems containing compounds of the formula I ##STR1## in which X is S or Se, R.sup.1 is C.sub.1 --C.sub.30 alkyl, --CF.sub.3, --O--R.sup.3, --S--R.sup.3 or --CO--O--R.sup.3, R.sup.2 is hydrogen, C.sub.1 --C.sub.30 alkyl, --CF.sub.3, --O--R.sup.3 or --CO--O--R.sup.3, and R.sup.3 is C.sub.1 --C.sub.30 alkyl or partially or perfluorinated C.sub.1 --C.sub.30 alkyl, are described.Electrically conductive layers which are suitable, for example, for the production of electrically conductive coatings can be prepared from the layer systems by doping with electron acceptors.Type: GrantFiled: May 22, 1989Date of Patent: April 28, 1992Assignee: Ciba-Geigy CorporationInventors: Alex Wegmann, Bernd Tieke, Carl W. Mayer, Bruno Hilti, Walter Fischer, Wolfgang Wernet
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Patent number: 5096780Abstract: Substituted or unsubstituted tetrathio-, tetraseleno- or tetratelluronaphthalenes or -tetracenes form electrically conducting networks of crystal needles with electron acceptors, in particular with halogen-containing organic compounds, on a substrate. These needle networks can be coated electrolytically with metals and/or can be peeled off together with polymers from the substrate in the form of films which are electrically conducting on one side.Type: GrantFiled: September 25, 1989Date of Patent: March 17, 1992Assignee: Ciba-Geigy CorporationInventors: Jurgen Finter, Bruno Hilti, Carl W. Mayer, Ernst Minder
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Patent number: 5077156Abstract: Substrates which have been coated with a mixture of a radiation-sensitive organic material, an unsubstituted or substituted tetrathio-, tetraseleno- or tetratelluro-naththalene and/or -tetracene and a substance containing active Cl, Br and/or I atoms, form radiation-sensitive layers with electrically conductive charge transfer complexes under the action of thermal energy. Irradiation under an image mask and subsequent development give antistatic or electrically conductive relief images which can be used, for example, as electrodes or conductive connections for electronic components.Type: GrantFiled: September 25, 1989Date of Patent: December 31, 1991Assignee: Ciba-Geigy CorporationInventors: Jurgen Finter, Bruno Hilti, Carl W. Mayer, Ernst Minder
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Patent number: 5009812Abstract: As a result of the action of electron acceptors, for example chlorine, bromine and/or iodine, on compositions containing a linear, branched or structurally crosslinked polymer and an unsubstituted or substituted tetrathionaphthalene, tetraselenonaphthalene, tetratelluronaphthalene, tetrathiotetracene, tetraselenotetracene or tetratellurotetracene, electrical conductivity is imparted to the compositions through the formation of charge-transfer complexes. These compositions are suitable for the production of mouldings, filaments, fibres, coatings and composite materials which have an antistatic finish or are electrically conducting.Type: GrantFiled: March 25, 1988Date of Patent: April 23, 1991Assignee: Ciba-Geigy CorporationInventors: Jurgen Finter, Bruno Hilti, Carl W. Mayer, Ernst Minder, Josef Pfeifer