Patents by Inventor Jurgen Schwindt
Jurgen Schwindt 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: 6723787Abstract: The present invention relates to a solvent-free, two component polyurethane coating composition that is suitable for the production of coatings that have long term resistance to temperatures of up to 30° C., have good elongation and withstand cathodic protection, which contains A) a solvent-free polymer mixture containing a component free from OH groups containing at least one of a chlorinated paraffin or dibutoxybenzene, a di-(phenoxy-alkyl) formal, or a polyacrylonitrile, and a component having hydroxyl groups including a component which contains hydroxy groups and ether groups, and optionally a hydroxy-functional polyether polyacrylate and/or another hydroxy-functional compound; and B) a polyisocyanate component containing at least one organic polyisocyanate, where the NCO:OH equivalent ratio is 0.8:1 to 1.5:1.Type: GrantFiled: December 3, 2002Date of Patent: April 20, 2004Assignee: Bayer AktiengesellschaftInventors: Jürgen Schwindt, Malte Homann, Karl-Heinz Kolping
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Publication number: 20030139561Abstract: The present invention relates to a solvent-free, two-component polyurethane coating composition that is suitable for the production of coatings that have long term resistance to temperatures of to 30° C.Type: ApplicationFiled: December 3, 2002Publication date: July 24, 2003Inventors: Jurgen Schwindt, Malte Homann, Karl-Heinz Kolping
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Patent number: 6130285Abstract: The present invention relates to a solvent-free, low viscosity binder composition which contains, in amounts sufficient to provide an NCO:OH equivalent ratio of 0.5:1 to 2.0:1,A) a polyisocyanate component containing one or more organic polyisocyanates andB) a solvent-free polyhydroxy component having a hydroxyl group content of 3.0 to 18 wt. % and a viscosity at 23.degree. C. of 200 to 10,000 mPa.s, which containsB.sub.1) a hydroxy-functional polyacrylate component which is prepared by polymerizing a mixture of olefinically unsaturated monomers in which at least one monomer is hydroxy-functional in the presence ofB.sub.2) a compound containing ether groups and having one or more hydroxy groups.The invention also relates to the use of this binder composition in solvent-free two-component polyurethane coating compositions for coating metallic or mineral substrates.Type: GrantFiled: August 14, 1997Date of Patent: October 10, 2000Assignee: Bayer AktiengesellschaftInventors: Martin Melchiors, Jurgen Schwindt, Gerhard Ruttmann, Wieland Hovestadt, Joachim Probst, Josef Pedain
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Patent number: 6111053Abstract: The invention relates to olefinically unsaturated polyisocyanates containing allophanate groups and having an NCO content of 6 to 20% by weight, an iodine value of 15 to 150, a content of hydrocarbon chains containing 12 to 30 carbon atoms of 100 to 700 mg/g and a content of allophanate groups of 10 to 300 mg/g, to a process for their production by reaction of a polyisocyanate component containing urethane groups with excess polyisocyanates, and to a one-component coating composition containing these olefinically unsaturated polyisocyanates as binders.Type: GrantFiled: May 8, 1995Date of Patent: August 29, 2000Assignee: Bayer AktiengesellschaftInventors: Martin Brahm, Eberhard Arning, Lutz Schmalstieg, Harald Mertes, Jurgen Schwindt
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Patent number: 6060574Abstract: The present invention relates to a reactive composition containingA) an organic polyisocyanate having a number average molecular weight (excluding the blocking agent) of 168 to 25,000, wherein the isocyanate groups are reversibly blocked with a hydrocarbon resin containing phenolic OH groups,B) at least one organic polyamine having at least two primary amino groups andC) optionally a compound containing oxirane groups.The present invention also relates to the use of these reactive systems for the preparation of coatings, adhesives, sealants, embedding compounds or molded articles.Type: GrantFiled: April 7, 1999Date of Patent: May 9, 2000Assignee: Bayer AktiengesellschaftInventors: Lutz Schmalstieg, Volker Schwindt, Tillmann Hassel, Gerhard Ruttmann, Jurgen Schwindt
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Patent number: 5733973Abstract: The present invention relates to binder compositions containingA) 40 to 95 parts by weight of OH-functional graft copolymer resins which are prepared by copolymerizing a mixture containing 0.1 to 10 parts by weight of at least one optionally functional polybutadiene having a molecular weight of 500 to 10,000 and having at least 20% by weight of side-chain 1,2-vinyl double bonds, andB) 5 to 60 parts by weight of a polyfunctional cross-linking resin selected from aminoplast resins and optionally blocked polyisocyanates,wherein the sum of the parts by weight of components A) and B) add up to 100, based on the weight of components A) and B).The present invention also relates to the use of the binder compositions according to the invention for lacquering vehicles, wood and furniture, and for preventing corrosion.Type: GrantFiled: December 2, 1996Date of Patent: March 31, 1998Assignee: Bayer AktiengesellschaftInventors: Christian Wamprecht, Michael Sonntag, Jurgen Schwindt, Dieter Margotte
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Patent number: 5612408Abstract: The present invention relates to a process for the preparation of polyurethanes suitable for use as thickeners for aqueous compositions by reacting at an NCO/OH equivalent ratio of 0.9:1 to 1.2:1a) a polyether component having an OH number of 10 to 30 mg KOH/g and obtained by the alkoxylation of a mixture ofa1) 30 to 80 mole % of a monofunctional alcohol or alkylphenol having 8 to 30 carbon atoms,a2) 2 to 10 mole % of sodium hydroxide or potassium hydroxide,a3) 10 to 60 mole % of water anda4) 0 to 10 mole % of a trihydric to hexahydric alcohol having a molecular weight of 92 to 600,with ethylene oxide or a mixture of ethylene oxide with up to 20 mole %, based on the total moles of alkylene oxides, of propylene oxide, in which the percentages of a1) to a4) add up to 100,withb) a polyisocyanate component containing at least one organic diisocyanate, optionally in admixture with up to 20 mole %, based on the total moles of component b), of higher than difunctional polyisocyanates.Type: GrantFiled: January 29, 1996Date of Patent: March 18, 1997Assignee: Bayer AktiengesellschaftInventors: Klaus Konig, Jurgen Schwindt, Jan Mazanek, Josef Pedain, Manfred Dietrich, Gerhard Klein, Karl-Roland Jerg
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Patent number: 5580947Abstract: A process for the production of olefinically unsaturated isocyanates by reacting a1) isophorone diisocyanate or mixtures of isophorone diisocyanate with a2) other organic polyisocyanates with b1.1) olefinically unsaturated carboxylic acids or mixtures thereof with b1.2) other monobasic or polybasic carboxylic acids, b2.1) olefinically unsaturated alcohols and/or b2.2) other monohydric or polyhydric alcohols, the unsaturated resulting isocyanates and their use as binders for one-component coating compositions which may be cured at room temperature.Type: GrantFiled: April 13, 1994Date of Patent: December 3, 1996Assignee: Bayer AktiengesellschaftInventors: Martin Brahm, Eberhard Arning, Lutz Schmalstieg, Jurgen Schwindt, Josef Pedain
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Patent number: 5468833Abstract: Moisture-curing, one-component coating compositions wherein the binder contains a mixture of A) 100 parts by weight of a polyisocyanate or polyisocyanate mixture of the diphenylmethane series, B) 40 to 150 parts by weight of NCO prepolymers with an NCO content of 1.5 to 12% by weight based on aromatic polyisocyanates and C) 10 to 90 parts by weight of at least one aliphatic lacquer polyisocyanate and the use of the coating compositions for the production of coatings on various substrates.The present invention relates to moisture-curing one-component coating compositions containing as binder a polyisocyanate component containingA) 100 parts by weight of a polyisocyanate or polyisocyanate mixture of the diphenyl methane series having an NCO content of 20 to 33% by weight,B) 40 to 150 parts by weight of one or more NCO prepolymers which have an NCO content of 1.Type: GrantFiled: December 20, 1994Date of Patent: November 21, 1995Assignee: Bayer AktiengesellschaftInventors: Jurgen Schwindt, Karl-Heinz Hentschel, Lutz Schmalstieg
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Patent number: 5459197Abstract: The present invention relates to an aqueous two-component coating composition wherein the binder contains(a) a component which is dissolved and/or dispersed in water, has an average hydroxyl number of 15 to 200 mg KOH/g, and contains(a1) a polyol component having a content of 8 to 450 milliequivalents, per 100 g of component (a1) solids, of chemically incorporated ammonium groups, .dbd.N.dbd..sup.+, comprising one or more polyaddition resins which are water-dilutable, contain hydroxyl groups, and have a molecular weight (M.sub.n) of 500 to 20,000 and(a2) up to 10 wt %, based on the weight of component (a1), of one or more reactive diluents which are water-soluble, have a molecular weight (M.sub.Type: GrantFiled: June 1, 1994Date of Patent: October 17, 1995Assignee: Bayer AktiengesellschaftInventors: Jurgen Schwindt, Helmut Reiff, Werner Kubitza
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Patent number: 5378756Abstract: The present invention is directed to a thickener composition for thickening aqueous systems which contains a mixture ofa) a water-soluble or water-dispersible thickener containing urethane groups,b) a non-ionic emulsifier andc) a compound corresponding to the formula ##STR1## wherein R.sub.1 and R.sub.3 may be the same or different and represent hydrocarbon radicals andR.sub.2 and R.sub.4 may be the same of different and represent hydrogen or hydrocarbon radicals,Q represents alkylene oxide units obtained by the alkoxylation of alcohols with alkylene oxides having 2 to 4 carbon atoms, andn represents a number from 0 to 120.The invention also relates to the use of this thickener composition as a thickener for aqueous systems.Type: GrantFiled: March 22, 1994Date of Patent: January 3, 1995Assignees: Bayer Aktiengesellschaft, Gebr. Borchers AGInventors: Uwe Thies, Michael Griesbach, Jurgen Schwindt, Jan Mazanek
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Patent number: 5179187Abstract: The present invention relates to a process for the preparation of a coating composition bya) treating moisture-containing auxiliaries and additives at 60.degree. to 120.degree. C. with urethane group-containing isocyanates having (cyclo)aliphatically bound isocyanate groups, an (average) NCO functionality of 0.8 to less than 2.0 and an NCO content of 5 to 17% by weight andb) after completion of the isocyanate/water reaction, combining the mixture obtained in step a) with iscyanate prepolymers having (cyclo)aliphatically bound isocyanate groups.The present invention also relates to the coating composition obtained by this process and to a composition containing urethane group-containing isocyanates having (cyclo)aliphatically bound isocyanate groups, an (average) NCO functionality of 0.8 to less than 2.0 and an NCO content of 5 to 17% by weight and moisture-containing auxiliaries or additives.Type: GrantFiled: February 14, 1991Date of Patent: January 12, 1993Assignee: Bayer AktiengesellschaftInventors: Josef Pedain, Jurgen Schwindt, Klaus Konig, Manfred Schonborn
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Patent number: 5081203Abstract: The present invention relates to of a coating composition containing a moisture-hardening binder based on organic polyisocyanates which is prepared by forming a mixture containing at least those auxiliaries and additives which are not completely dry and an isocyanate component a) which has an average NCO functionality of 1.05 to 1.8 and is based on the reaction product ofa1) a polyisocyanate mixture of the diphenylmethane series witha2) a monohydric C.sub.1-26 alkanol which may contain ether bridges,and after the isocyanate/water reaction is substantially complete, further mixing the mixture with an isocyanate component b) which has an isocyanate content of 2.5 to 25% by weight and any remaining auxiliaries and additives, the quantities of components a) and b) corresponding to a weight ratio of a) to b) of 1:1 to 1:30.The present invention also relates to a process for the preparation of these coating compositions.Type: GrantFiled: June 26, 1990Date of Patent: January 14, 1992Assignee: Bayer AktiengesellschaftInventors: Josef Pedain, Jurgen Schwindt, Theodor Engbert, Manfred Schonborn
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Patent number: 4745151Abstract: The present invention is directed to a process for the production of aqueous polyurethane-polyurea dispersions by reacting NCO-prepolymers having an average NCO-functionality of 2 to 2.3 and an average molecular weight of about 700 to about 5000 with organic polyamines having an average amine functionality of 2.05 to about 3 and an average molecular weight of 60 to about 2000 containing primary and/or secondary amino groups at an NCO/NH ratio about 1.05:1 to about 7:1 in the presence of a water-miscible, weakly polar solvent inert to isocyanate groups and having a boiling point at normal pressure below 100.degree. C., converting the resulting solution of the reaction products into an aqueous dispersion by the addition of water and optionally removing the solvent used by distillation, characterized in that the reactants and amounts used are selected such that the resulting reaction products have an NCO-functionality of 2.2 to about 3 and NCO-content of about 0.1 to 5% by weight.Type: GrantFiled: April 14, 1987Date of Patent: May 17, 1988Assignee: Bayer AktiengesellschaftInventors: Klaus Noll, Jurgen Mosbach, Josef Pedain, Klaus Nachtkamp, Jurgen Schwindt
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Patent number: 4684691Abstract: Aqueous lacquers, which contain grafted polybutadiene/maleic acid semi-esters or semi-amides as bonding agent, can be siccativated while the siccative is firstly dispersed in the aqueous phase and the bonding agent is dispersed in this dispersion.Type: GrantFiled: July 22, 1985Date of Patent: August 4, 1987Assignee: Bayer AktiengesellschaftInventors: Hans G. Stahl, Peter Hohlein, Hans-Joachim Traenckner, Lothar Fleiter, Jurgen Schwindt
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Patent number: 4608413Abstract: The present invention is directed to aqueous stoving lacquers containing pigments or fillers wherein the binders are based on combinations of (a) polyurethane prepolymers containing partly or completely neutralized carboxyl groups and blocked isocyanate groups and (b) polyurethane prepolymers containing free hydroxyl groups and partly or completely neutralized carboxyl groups. The binder components are further characterized by polyester and polyether segments, each being present in amounts of greater than 10% by weight.The present invention is also directed to films and coatings prepared from these aqueous stoving lacquers.Type: GrantFiled: December 7, 1984Date of Patent: August 26, 1986Assignee: Bayer AktiengesellschaftInventors: Klaus Nachtkamp, Jurgen Schwindt, Karl-Ludwig Noble, Hans-Georg Stahl
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Patent number: 4594374Abstract: Aqueous dispersions based on selected polyesters and/or acrylate resins, water-soluble aminoplast resins, emulsifiers, aluminium bronze, organic solvents and optionally further auxiliaries are suitable for the production of metal effect lacquer coatings by the two-layer wet-in-wet lacquering process.Type: GrantFiled: February 28, 1985Date of Patent: June 10, 1986Assignee: Bayer AktiengesellschaftInventors: Hans-Georg Stahl, Jurgen Schwindt, Klaus Nachtkamp
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Patent number: 4587275Abstract: Polyurethane urea elastomers are produced by reacting polyisocyanates with compounds containing at least two isocyanate reactive hydrogen atoms having a molecular weight of 400 to 10,000 and mononuclear or dinuclear aromatic diamines. The aromatic diamines must have at least one sulfonamide group as a substituent on at least one of their aromatic rings. Known chain lengthening agents, activators, blowing agents, auxiliary agents and additives may also be included in the reaction mixture.Polyurethane elastomers produced by this process have excellent mechanical properties. In particular, such elastomers are soft yet have high tear propagation resistance.Type: GrantFiled: September 30, 1982Date of Patent: May 6, 1986Assignee: Bayer AktiengesellschaftInventors: Richard Kopp, Holger Meyborg, Gerhard Grogler, Jurgen Schwindt
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Patent number: 4576989Abstract: The present invention is directed to aqueous solutions or dispersions which may contain blocked polyisocyanates of cationic oligourethanes which are crosslinkable at elevated temperature and contain(a) about 0.1 to 3% by weight of ternary or quaternary ammonium ions introduced through Michael adducts of secondary amines having at least one hydroxyl group and specific acrylic acid derivatives,(b) up to about 2.8% by weight of tert. amino nitrogen atoms incorporated through Michael adducts of secondary amines having at least one hydroxyl group and specific acrylic acid derivatives and(c) about 0 to 15% by weight of blocked isocyanate groups, provided that the ternary ammonium groups of (a), the tert. nitrogen atoms of (b) and the blocked isocyanate groups are present in an equivalent ratio of (a+b):blocked isocyanate groups of about 1:1 to 1:1.5.Type: GrantFiled: February 14, 1985Date of Patent: March 18, 1986Assignee: Bayer AktiengesellschaftInventors: Klaus Noll, Terry Potter, Josef Pedain, Jurgen Schwindt
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Patent number: 4387057Abstract: The invention is directed to new sulfur-containing diisocyanates in which a mercapto, sulfoxo or sulfone group joins two aromatic nuclei together or joins an aromatic nucleus to an aliphatic group and in which at least one of the aromatically bound isocyanate groups is in the ortho-position to the sulfur atom. The invention is also directed to a process for the preparation of these new sulfur-containing diisocyanates and to their use in the isocyanate polyaddition process for the production of polyurethanes.Type: GrantFiled: April 2, 1980Date of Patent: June 7, 1983Assignee: Bayer AktiengesellschaftInventors: Jurgen Schwindt, Gerhard Grogler, Otto Ganster, Johannes Koster