Patents by Inventor Eduard Hansel
Eduard Hansel 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: 7517559Abstract: The present invention relates to inner coatings of metal food containers and packaging and to a process for their production. The coatings are applied to the inside of at least a portion of the surface area of containers that are in direct contact with foods or other consumable products and subsequently cured. The coatings include a) at least one polyisocyanate containing an average of at least two NCO groups per molecule, at least 95% of the NCO groups being blocked with a blocking agent, and b) at least one polyhydroxyl compound containing an average of at least two hydroxyl groups per molecule that react with NCO groups.Type: GrantFiled: October 20, 2004Date of Patent: April 14, 2009Assignee: Bayer MaterialScience AGInventors: Christoph Thiebes, Beate Baumbach, Eduard Hänsel, Wolfram Küttner, Christian Wamprecht
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Publication number: 20050129847Abstract: The present invention relates to inner coatings of metal food containers and packaging and to a process for their production. The coatings are appied to the inside of at least a portion of the surface area of containers that are in direct contact with foods or other consumable products and subsequently cured. The coatings include a) at least one polyisocyanate containing an average of at least two NCO groups per molecule, at least 95% of the NCO groups being blocked with a blocking agent, and b) at least one polyhydroxyl compound containing an average of at least two hydroxyl groups per molecule that react with NCO groups.Type: ApplicationFiled: October 20, 2004Publication date: June 16, 2005Inventors: Christoph Thiebes, Beate Baumbach, Eduard Hansel, Wolfram Kuttner, Christian Wamprecht
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Patent number: 5998538Abstract: The present invention relates to solvent-free two-component polyurethane adhesive systems with high initial strengths and low levels of migration derived from a select reactants comprising a hydroxyl polyester and an isocyanate containing prepolymer.Type: GrantFiled: September 16, 1993Date of Patent: December 7, 1999Assignee: Bayer AktiengesellschaftInventors: Walter Meckel, Eduard Hansel, Klaus Konig, Otto Ganster, Jorg Buchner
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Patent number: 5407517Abstract: The invention relates to a process for bonding surfaces with isocyanate-containing prepolymers having an isocyanate group content of less than 1.8% by weight, based on the prepolymer, and an average molecular weight MW.sub.n of at least 4,500 in which (a) the prepolymers are prepared by the reaction of (i) polyester diols prepared from dodecanedioic acid and even-numbered alkane diols containing at least 6 carbon atoms and (ii) diisocyanates; (b) the prepolymer is applied as a hotmelt adhesive at a temperature of 80 to 160.degree. C. by spin-spraying onto at least one surface to be bonded; and (c) the treated surface is brought into intimate contact with a second surface to be bonded.Type: GrantFiled: March 15, 1991Date of Patent: April 18, 1995Assignee: Bayer AktiengesellschaftInventors: Eduard Hansel, Walter Meckel, Klaus Konig, Otto Ganster, Horst Stepanski
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Patent number: 5250610Abstract: The present invention relates to aqueous polyurethane dispersions based onA) a relatively high molecular weight polyhydroxyl component containing carboxylic acid groups,B) optionally another relatively high molecular weight polyhydroxyl component which is substantially free of carboxylic acid groups,C) optionally low molecular weight polyhydroxyl compounds as chain lengthening agents,D) organic polyisocyanates andE) a neutralizing agent capable of converting the carboxylic acid groups into carboxylate groups,the dispersions are characterized in that the carboxyl group-containing relatively high molecular weight polyhydroxyl component A) is the esterification product of a polyether polyol a1) in the molecular weight range of from 400 to 5000, with a polycarboxylic acid a2); the dispersions are useful as laminating adhesives.Type: GrantFiled: January 30, 1992Date of Patent: October 5, 1993Assignee: Bayer AktiengesellschaftInventors: Eduard Hansel, Walter Meckel, Thomas Munzmay
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Patent number: 5162457Abstract: This invention relates to crystalline, isocyanate group-containign hot melt adhesives based onfrom 70-95% by weight of a prepolymer A based on polyester diols having a molecular weight of from 1500 to 10,000 and melting points of from 50.degree. to 90.degree. C. and diisocyanates in a ratio of isocyanate groups of the diisocyanate to the hydroxyl groups of the polyester diol of from 3:1 to 1.2:1 andfrom 5-30% by weight of a component B having a molecular weight of from 1000 to 10,000 based on polyesters having melting points of from 60.degree. to 150.degree. C., in which component B contains at most 0.5 Zerewitinow active groups per molecule.Type: GrantFiled: October 31, 1991Date of Patent: November 10, 1992Assignee: Bayer AktiengesellschaftInventors: Eduard Hansel, Walter Meckel, Klaus Konig, Otto Ganster, Horst Stepanski
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Patent number: 5143987Abstract: The present invention is directed to a polyurethane reactive adhesive compound comprising:A) one or more polyisocyanates having an inactivated particle surface,B) at least one isocyanate reactive compound having a molecular weight MG.sub.w greater than 400, andC) finely dispersed polymer particles, wherein the polymer is solid at temperatures below 70.degree. C. and has a molecular weight MG.sub.w of at least 3000.Type: GrantFiled: September 5, 1990Date of Patent: September 1, 1992Assignee: Bayer AktiengesellschaftInventors: Eduard Hansel, Heinrich Hess, Gunter Arend, Gerhard Grogler, Richard Kopp
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Patent number: 5143995Abstract: Disclosed herein is a transparent adhesive containing isocyanate groups based on at least one polyol and at least one polyisocyanate, characterized in that the adhesive contains urea groups.Type: GrantFiled: June 27, 1991Date of Patent: September 1, 1992Assignee: Bayer AktiengesellschaftInventors: Walter Meckel, Eduard Hansel, Otto Ganster, Gunter Arend, Jorg Buchner
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Patent number: 5115073Abstract: The present invention is directed to a polyurethane system containing isocyanate groups prepared by reactingA) 70 to 98 parts by weight of at least one polyester diol having a melting point of 30.degree. C. to 60.degree. C. and a molecular weight of 800 to 8,000,B) 2 to 30 parts by weight of at least one polyester diol having a melting point of 65.degree. C. to 150.degree. C. and a molecular weight of 600 to 8,000, andC) no more than 1 mole of a diol having a molecular weight of less than 600 per moles of A) plus B), with,D) at least one organic polyisocyanate, the ratio of isocyanate groups to hydroxyl groups is between 3:1 and 1.2:1.Type: GrantFiled: September 11, 1990Date of Patent: May 19, 1992Assignee: Bayer AktiengesellschaftInventors: Walter Meckel, Eduard Hansel, Gu Arend, Klaus Konig
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Patent number: 5091497Abstract: The present invention relates to heat-curable reaction systems prepared by mixing (a) solid polyisocyanates (optionally deactivated) having melting points above 80.degree. C., (b) OH- and/or NH.sub.2 -terminated polyoxyalkylene polyethers that have molecular weights of 400 to 10,000 and are liquid at room temperature, (c) solid OH- and/or NH.sub.2 -terminated polyesters that have molecular weights of 400 to 20,000 and are solid at room temperature, and which are thoroughly distributed throughout the mixture but are not homogeneously miscible with the polyether, (d) optional low molecular weight chain-extending agents that contain OH and/or NH.sub.2 groups and have a molecular weight of 62 to 399, and (e) optional catalysts and other auxiliaries. The invention further relates to a method for preparing elastomers, coating compounds, sealing compounds, or adhesives by heat-curing the heat-curable systems.Type: GrantFiled: November 30, 1990Date of Patent: February 25, 1992Assignee: Bayer AktiengesellschaftInventors: Gerhard Grogler, Richard Kopp, Heinrich Hess, Eduard Hansel, Thomas Scholl
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Patent number: 4985534Abstract: This invention relates to modified polyetheramide hotmelt adhesives showing reduced melt viscosity and, optionally, better adhesive properties and to their use as ingredients for hotmelt adhesives.Type: GrantFiled: February 2, 1990Date of Patent: January 15, 1991Assignee: Bayer AktiengesellschaftInventors: Hans-Detlef Heinz, Eduard Hansel, Rolf-Volker Meyer, Gunter Arend
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Patent number: 4474933Abstract: The present invention relates to resin mixtures which are fluid at temperatures up to 100.degree. C. and which crosslink either at elevated temperature or under the influence of moisture. Thermal crosslinking takes place at temperatures of 100.degree. C. and up, preferably at about 120.degree. C. The mixtures contain one or more mutually compatible polymers containing hydroxyl groups, in which at least 5% and not more than 90% of the hydroxyl groups are replaced by alkoxysilyl groups. The introduction of the alkoxysilyl groups is accomplished by the reaction of a diisocyanate with a hydroxyl group on the polymer, on the one hand, and with an aminosilane or mercaptosilane ester on the other. On the basis of their fluid-to-viscous consistency at room temperature or moderately elevated temperature, the resins can be applied in a thin coating and easily crosslinked in situ.Type: GrantFiled: June 2, 1983Date of Patent: October 2, 1984Assignee: Dynamit Nobel AGInventors: Hans Huber, Eduard Hansel, Gerhard Geier