Patents by Inventor Hubert Liebe
Hubert Liebe 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: 8563129Abstract: The invention relates polysilazane-containing coatings for increasing the light permeability of sun-facing covers of solar cells. The coating for surfaces contains at least one polysilazane of formula (1) —(SiRR?R?—NR??1)n- (1), wherein R?, R?, R?? are the same or different or represent an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl group, n being an integer and n being chosen in such a manner that the perhydropolysilazane has a number average molecular weight of 150 to 150,000 g/mol, a solvent and a catalyst. The cured coating has a thickness of at least 0.50-10 micrometer, preferably 0.2 to 5 micrometer, especially preferred 0.5 to 1.5 micrometer. It is especially suitable as transmission-promoting coating for use in sun-facing covers of solar cells.Type: GrantFiled: April 17, 2009Date of Patent: October 22, 2013Assignee: AZ Electronic Materials (Luxembourg) S.a.r.l.Inventors: Klaus Rode, Hartmut Wiezer, Sandra Stojanovic, Hubert Liebe, Lars Blankenburg
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Patent number: 8470924Abstract: The present invention is directed to a color-pigmented paint composition with high hiding power, comprising a solvent or a solvent mixture and a.) based on the total formulation, 1% to 80% by weight of a polysilazane of the formula (1) —(SiR?R?—NR??)n???(1) and b.) based on the total formulation 1% to 15% by weight, particularly 2% to 8% by weight, of one or more pigments wherein R?, R?, and R?? are alike or different and independently of one another are hydrogen or an unsubstituted or substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl radical, n being an integer and n having a magnitude such that the polysilazane has a number average molecular weight of 150 to 150 000 g/mol.Type: GrantFiled: May 15, 2008Date of Patent: June 25, 2013Assignee: AZ Electronic Materials USA Corp.Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Frank Osterod, Markus Mahn, Ken Ryan
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Patent number: 8309228Abstract: The invention relates to the use of polysilazanes as a permanent coating on metal and polymer surfaces for preventing corrosion, increasing scratch resistance and to facilitate easier cleaning. The invention comprises a solution of a polysilazane or a blend of polysilazanes of the general formula 1 —(SiR?R?—NR??)n—??(1) where R?, R? and R?? are identical or different and independently of one another represent hydrogen or an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl group and n represents a whole number and is calculated in such a way that the polysilazane has a numerical average molecular weight of 150 to 150 000 g/mol, in a solvent. The invention also relates to a method for producing the coating.Type: GrantFiled: August 25, 2006Date of Patent: November 13, 2012Assignee: AZ Electronic Materials (Luxembourg) S.A.R.L.Inventors: Andreas Dierdorf, Stefan Brand, Andreas Wacker, Hubert Liebe
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Publication number: 20120276410Abstract: A coating for coating a metal or a metal strip by the coil coating process comprising a solution of a polysilazane or a mixture of polysilazanes of the formula 1 —(SiR?R?-NR??)n—??(1) where R?, R? and R?? are identical or different and independently of one another are hydrogen or an unsubstituted or substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl radical, n being an integer such that the polysilazane or mixture of polysilazanes has a number-average molecular weight of 150 to 150 000 g/mol, in at least one solvent and at least one catalyst and the solution of a polysilazane or a mixture of polysilazanes contains 1% to 50% by weight of the polysilazane or mixture of polysilazanes.Type: ApplicationFiled: July 12, 2012Publication date: November 1, 2012Inventors: Stefan BRAND, Andreas Dierdorf, Hubert Liebe, Andreas Wacker
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Patent number: 8247037Abstract: A coating for metals containing a polysilazane solution or a mixture of polysilazanes of the general formula (I) —(SiR?R?-NR??)n—??(1) wherein R?, R? and R?? are identical or different and independently represent hydrogen or an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl radical, wherein n is a whole number and n is dimensioned in such a way that the polysilazane has a number-average molecular weight of 150 to 150 000 g/mol, in a solvent and at least one catalyst. The invention also relates to a method for the production of the coating.Type: GrantFiled: October 25, 2005Date of Patent: August 21, 2012Assignee: AZ Electronic Materials (Luxembourg) S.a.r.L.Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Andreas Wacker
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Patent number: 8153199Abstract: A coating for surfaces, comprising at least one of the polysilazanes having the formula 1 and/or formula 2 where n is an integer and is dimensioned such that the perhydropolysilazane has a number-average molecular weight of 150 to 150 000 g/mol, a solvent and a catalyst and, if desired, one or more cobinders, for preventing scaling and corrosion on metal surfaces. The hardened coating has a thickness of 0.2-10 micrometers, preferably 0.3 to 5 micrometers. It is particularly useful as a protective coating for metals for preventing scaling and corrosion.Type: GrantFiled: February 12, 2007Date of Patent: April 10, 2012Assignee: AZ Electronic Materials (Luxembourg) S.A.R.L.Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Frank Osterod, Guenter Motz, Martin Guenthner
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Publication number: 20120009400Abstract: The invention relates to a rollable tile structure, to a process for the production of the tile structure, and to the use of the tile structure in the production of a tiled covering. The invention relates further to the use of organic polysilazanes in the production of a rollable tile structure. The tile structure has a first carrier layer (1) and a surface layer (2), the surface layer (2) comprising a network of organic polysilazanes and the tile structure as a whole being in rollable form.Type: ApplicationFiled: October 6, 2009Publication date: January 12, 2012Inventors: Marcel Nauer, Alex Kummer, Stefan Brand, Hubert Liebe, Norman Blank, Urs Erb, Harald Jenny
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Patent number: 8057858Abstract: A method for producing corrosion-resistant, painted oxide layers on aluminum or aluminum alloys. According to the method, a polysilazane solution is applied to a dry oxide layer that is painted with a water-soluble, anionic color, and the coating is then hardened at a temperature ranging from 40 to 150° C.Type: GrantFiled: October 13, 2006Date of Patent: November 15, 2011Assignee: Clariant Finance (BVI) LimitedInventors: Andreas Dierdorf, Stefan Brand, Hubert Liebe, Frank Osterod, Oliver Eich, Mark Jozefowicz
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Publication number: 20100305245Abstract: The present invention is directed to a color-pigmented paint composition with high hiding power, comprising a solvent or a solvent mixture and a.) based on the total formulation, 1% to 80% by weight of a polysilazane of the formula (1) —(SiR?R?—NR??)n???(1) and b.) based on the total formulation 1% to 15% by weight, particularly 2% to 8% by weight, of one or more pigments wherein R?, R?, and R?? are alike or different and independently of one another are hydrogen or an unsubstituted or substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl radical, n being an integer and n having a magnitude such that the polysilazane has a number average molecular weight of 150 to 150 000 g/mol.Type: ApplicationFiled: May 15, 2008Publication date: December 2, 2010Applicant: CLARIANT INTERNATIONAL LTD.Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Frank Osterod, Markus Mahn, Ken Ryan
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Publication number: 20090286086Abstract: The invention relates to the use of polysilazanes as a permanent coating on metal and polymer surfaces for preventing corrosion, increasing scratch resistance and to facilitate easier cleaning. The invention comprises a solution of a polysilazane or a blend of polysilazanes of the general formula 1 —(SiR?R?—NR??)n—??(1) where R?, R? and R?? are identical or different and independently of one another represent hydrogen or an optionally substituted alkyl, aryl, vinyl or (trialkoxysilyl)alkyl group and n represents a whole number and is calculated in such a way that the polysilazane has a numerical average molecular weight of 150 to 150 000 g/mol, in a solvent. The invention also relates to a method for producing the coating.Type: ApplicationFiled: August 25, 2006Publication date: November 19, 2009Inventors: Andreas Dierdorf, Stefan Brand, Andreas Wacker, Hubert Liebe
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Publication number: 20090220806Abstract: Disclosed is a method for producing corrosion-resistant, painted oxide layers on aluminum or aluminum alloys. According to said method, a polysilazane solution is applied to a dry oxide layer that is painted with a water-soluble, anionic color, and the coating is then hardened at a temperature ranging from 40 to 150° C.Type: ApplicationFiled: October 13, 2006Publication date: September 3, 2009Applicant: CLARIANT INTERNATIONAL LTD.Inventors: Andreas Dierdorf, Stefan Brand, Hubert Liebe, Frank Osterod, Oliver Eich, Mark Jozefowicz
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Publication number: 20090098300Abstract: A coating for surfaces, comprising at least one polysilazane of the formula 1 and/or of the formula 2 where n is an integer and is dimensioned such that the perhydropolysilazane has a number average molecular weight of 150 to 150 000 g/mol, a solvent and catalyst and, if appropriate, one or more cobinders, for preventing scaling and corrosion on metal surfaces. The hardened coating has a thickness of at least 0.2-10 micrometres, preferably 0.3 to 5 micrometres. It is particularly useful as a protective coating for metals for preventing scaling and corrosion.Type: ApplicationFiled: February 12, 2007Publication date: April 16, 2009Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Frank Osterod, Guenter Motz, Martin Guenthner
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Publication number: 20080131706Abstract: The invention relates to the use of polysilazanes as permanent coatings on metal surfaces for the prevention of the susceptibility to fingerprints, characterized in that the polysilazane is in the form of a solution of a polysilazane or a mixture of polysilazanes of the general formula 1 —(SiR?R?—NR??)n— ??(1) where R?, R?, R?? independently=H, optionally-substituted alkyl-, aryl, vinyl- or (trialkoxysilyl)alkyl, n=a whole number such that the polysilazane has a number-average molecular weight of from 150 to 150,000 g/mol in a solvent. The invention further relates to a method for production of the coating.Type: ApplicationFiled: February 10, 2006Publication date: June 5, 2008Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Andreas Wacker
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Publication number: 20080118651Abstract: A method used to produce a permanent support layer on precious metal surfaces by coating solutions which are based on polysilazane. Said method is used to coat surfaces made of precious metal or precious metal alloys with a solution containing a polysilazane of formula (I), wherein n is measured in such a manner that the polysilazane has an average molecular weight from 150-150,000 g/mol, in addition to a solvent and a catalyst. The invention is characterized in that a silane based primer which contains sulphur and which is used to improve adherence, is applied to the object which is to be coated prior to the coating with the polysilazane solution. The invention also relates to coatings which are produced according to the inventive method.Type: ApplicationFiled: January 12, 2006Publication date: May 22, 2008Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Andreas Wacker
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Publication number: 20080107894Abstract: A coating for coating films, which comprises, dissolved in a solvent, polysilazane or a mixture of polysilazanes of the general formula —(SiR?R?—NR??)n— wherein R?, R?, R?? are the same or different and independently represent hydrogen or an optionally substituted alkyl, aryl or (trialkoxysilyl)alkyl group, where n is an integer and is selected in such a manner that the polysilazane has a number-average molecular weight of from 150 to 150 000 g/mol, and at least one catalyst. The invention also relates to a method for coating films, especially polymer films, to coated films and to film composites.Type: ApplicationFiled: October 25, 2005Publication date: May 8, 2008Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Andreas Wacker
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Publication number: 20080014461Abstract: A coating for metals containing a polysilazane solution or a mixture of polysilazanes of general formula (1) —(SiR?R?—NR?)n— (1) wherein R?, R?, R?? are identical or different and independently represent hydrogen or an optionally substituted alkyl-, aryl-, vinyl or (trialkoxysilyl)alkyl radical, wherein n is a whole number and n is dimensioned in such a way that polysilazane has an average molecular weight of 150-150,000 g/mol, in a solvent and at least one catalyst. The invention also relates to a method for the production of the coating.Type: ApplicationFiled: October 25, 2005Publication date: January 17, 2008Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Andreas Wacker
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Publication number: 20070196672Abstract: The invention relates to a surface coating comprising at least one type of perhydropolysilazane of the formula I wherein n is an integer of a value such that the perhydropolysilazane number-average molecular weight of from 150 to 150 000 g/mol, a solvent and a catalyst and, possibly one or more cobinding agents. The hardened coating has thickness of at least 1 micrometer, preferably ranging from 2 to 20 micrometers. The inventive coating containing at least one type of perhydropolysilazane is suitable for protecting rims, in particular, aluminum rims.Type: ApplicationFiled: February 22, 2005Publication date: August 23, 2007Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Andreas Wacker
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Publication number: 20070190308Abstract: A coating for metal surfaces, consisting of a.) optionally a scratch-resistant perhydropolysilazane base coat and b.) an upper protective coat containing at least one perhydropolysilazane of the formula (1) and photocatalytic titanium dioxide (I) wherein n is a whole number and n is dimensioned in such a way that the measured such that the perhydropolysilazane has a number-average molecular weight of from 150 to 150 000 g/mol. Preferably, the thickness of the protective layer is at least 1 micrometre, more preferably 2 to 20 micrometres. The invention also relates to a method for the production of a coating, in addition to the use thereof as a self-cleaning protective layer, particularly for the rims of automobiles.Type: ApplicationFiled: February 22, 2005Publication date: August 16, 2007Inventors: Stefan Brand, Andreas Dierdorf, Hubert Liebe, Andreas Wacker
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Publication number: 20070116968Abstract: The invention relates to a hydrophilic coating for surfaces containing one or several polysilazanes and an ionic reagent or mixtures of ionic reagents. The polysilazane is, in particular, a polysilazane of the formula —(SiR?R?—NR??)n— (1),wherein R?, R?, R?? can be identical or different and are either hydrogen or organic or metalorganic radicals, n is measured in such a manner that the polysilazane has a numerical average molecular weight ranging from 150 to 150 000 g/mol. In a preferred embodiment, the polysilazane is perhydropolysilazane (R?=R?=R??=H). The ionic reagent is, preferably, a salt of a carboxylic acid, in particular of a hydroxycarboxylic acid, or a cationic or anionic silane, or an oligomer or polymer. The invention also relates to a method for the production of the above-mentioned hydrophilic coatings.Type: ApplicationFiled: December 16, 2004Publication date: May 24, 2007Inventors: Andreas Dierdorf, Hubert Liebe, Andreas Wacker, Gunter Motz
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Publication number: 20050279255Abstract: A coating solution comprising 0.1 to 35% by weight of an inorganic or organic polysilazane having repeating units represented by the general formula below and soluble in a solvent and 0.1 to 10% by weight of catalyst such as 4,4?-trimethylenebis(1-methylpiperidine) based on a pure polysilazane content. By applying the coating solution onto the surface of base materials such as metals, plastics, glass, ceramic, wood, cement, mortar, bricks, etc., a silica coating strongly adhered to the base materials can be formed excellent in corrosion resistance and anti-scratch properties and simultaneously excellent in characteristics such as abrasion resistant, long-lasting anti-fouling properties, wetting properties to water, sealing properties, chemical resistance, oxidation resistance, physical barrier effect, heat resistance, fire resistance and antistatic properties.Type: ApplicationFiled: October 21, 2003Publication date: December 22, 2005Inventors: Tadashi Suzuki, Osamu Funayama, Andreas Dierdorf, Hubert Liebe