Patents by Inventor Heinrich Konigshofen
Heinrich Konigshofen 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: 6420489Abstract: An improved process is provided for the bromination of isoolefin-conjugated diolefin polymers by brominating said polymer in solution in selected halogen-containing hydrocarbons as solvent. There is also provided an improved product of said process wherein the brominated polymer contains not less than 80 percent of the bound bromine atoms in a form suitable to participate in the vulcanization of the polymer and wherein not less than 70 percent of the bound conjugated diolefin units are similarly so brominated.Type: GrantFiled: February 28, 2001Date of Patent: July 16, 2002Assignee: Bayer AktiengesellschaftInventors: Gabor Kaszas, Wolfgang Baade, Heinrich Konigshofen
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Patent number: 6287376Abstract: Hydrophobic, oxidic and/or siliceous fillers obtainable by treating an oxidic and/or siliceous filler with 0.1 to 50 parts by weight, per 100 parts by weight of filler, with an adduct of sulfur and unsaturated primary and/or secondary alcohols with 3 to 60 carbon atoms at temperatures of 20 to 250° C., wherein the adduct has been obtained by reacting 1 to 10 moles of sulfur per mole of double bonds in the alcohol.Type: GrantFiled: February 16, 1999Date of Patent: September 11, 2001Assignee: Bayer AktiengesellschaftInventors: Thomas Scholl, Hermann-Josef Weidenhaupt, Heinrich Königshofen, Peter Wendling
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Publication number: 20010008923Abstract: An improved process is provided for the bromination of isoolefin-conjugated diolefin polymers by brominating said polymer in solution in selected halogen-containing hydrocarbons as solvent. There is also provided an improved product of said process wherein the brominated polymer contains not less than 80 percent of the bound bromine atoms in a form suitable to participate in the vulcanization of the polymer and wherein not less than 70 percent of the bound conjugated diolefin units are similarly so brominated.Type: ApplicationFiled: February 28, 2001Publication date: July 19, 2001Inventors: Gabor Kaszas, Wolfgang Baade, Heinrich Konigshofen
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Patent number: 6248896Abstract: The invention relates to a new process for the preparation of dithiazolyl-(2,2′)-disulfides by oxidation of 2-mercaptothiazoles, to the dithiazolyl-(2,2′)-disulfides that can be obtained in this way, and to the use thereof.Type: GrantFiled: July 28, 2000Date of Patent: June 19, 2001Assignee: Bayer AktiengesellschaftInventors: Wilfried Nolte, Heinrich Königshofen, Adolf Sicheneder
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Patent number: 6232409Abstract: An improved process is provided for the bromination of isoolefin-conjugated diolefin polymers by brominating said polymer in solution in selected halogen-containing hydrocarbons as solvent. There is also provided an improved product of said process wherein the brominated polymer contains not less than 80 percent of the bound bromine atoms in a form suitable to participate in the vulcanization of the polymer and wherein not less than 70 percent of the bound conjugated diolefin units are similarly so brominated.Type: GrantFiled: February 24, 1997Date of Patent: May 15, 2001Assignee: Bayer AktiengesellschaftInventors: Gabor Kaszas, Wolfgang Baade, Heinrich Konigshofen
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Patent number: 6204338Abstract: An improved process is provided for the bromination of isoolefin-conjugated diolefin polymers by brominating said polymer in solution in a solvent comprising a mixture of an inert saturated paraffinic hydrocarbon and an inert halogen-containing hydrocarbon. There is also provided an improved product of said process wherein the brominated polymer contains not less than 70 percent of the bound conjugated diolefin units which are brominated and also not less than 80 percent of the bound bromine atoms are in a form suitable to participate in the vulcanization of said polymer.Type: GrantFiled: November 19, 1998Date of Patent: March 20, 2001Assignee: Bayer AktiengesellschaftInventors: Gabor Kaszas, Wolfgang Baade, Heinrich Konigshofen
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Patent number: 6124467Abstract: The invention relates to a new process for the preparation of dithiazolyl-(2,2')-disulfides by oxidation of 2-mercaptothiazoles, to the dithiazolyl-(2,2')-disulfides that can be obtained in this way, and to the use thereof.Type: GrantFiled: December 3, 1999Date of Patent: September 26, 2000Assignee: Bayer AktiengesellschaftInventors: Wilfried Nolte, Heinrich Konigshofen, Adolf Sicheneder
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Patent number: 6034169Abstract: The present invention is directed to a novel adhesive which is a mixture ofA) at least one aqueous dispersion of a polymer which has a softening point below 70.degree. C., said dispersion containing 5 to 70% by weight solids and having a film-forming temperature below 70.degree. C., andB) at least one aqueous dispersion of a polymer based on olefinically unsaturated monomers having a softening point is above 70.degree. C., said dispersion containing 5 to 70% by weight solids,wherein the weight ratio of dispersion A) to dispersion B) is from 97:3 to 60:40, based on the solids content of said dispersions.Type: GrantFiled: September 2, 1992Date of Patent: March 7, 2000Assignee: Bayer AktiengesellschaftInventors: Reiner Witkowski, Otto Ganster, Heinrich Konigshofen, Ralph Ostarek
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Patent number: 5977225Abstract: The rubber mixtures according to the invention, containing at least one rubber, a filler, optionally additional rubber auxiliaries and at least one polysulphide polyether silane corresponding to the formulaR.sup.1 R.sup.2 R.sup.3 Si--X.sup.1 --(--S.sub.x --polyether --).sub.m --(--S.sub.x --X.sup.2 --SiR.sup.1 R.sup.2 R.sup.3).sub.n (I),are used for the preparation of rubber vulcanisates, from which in particular tires having a low rolling resistance associated with a good wet skid resistance and a high abrasion resistance can be produced.Type: GrantFiled: March 4, 1998Date of Patent: November 2, 1999Assignee: Bayer AGInventors: Thomas Scholl, Hermann-Josef Weidenhaupt, Heinrich Konigshofen, Ulrich Eisele
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Patent number: 5925791Abstract: 4-aminodiphenylamines are produced by hydrogenating nitrobenzene with hydrogen in the presence of bases containing hydroxide and/or oxide groups and heterogeneous catalysts and in the presence of inert aprotic solvents at temperatures of 0 to 200.degree. C. and pressures of 0.1 to 150 bars.Type: GrantFiled: February 27, 1998Date of Patent: July 20, 1999Assignee: Bayer AGInventors: Hans-Josef Buysch, Christian Laue, Heinrich Konigshofen, Ulrich Notheis, Pieter Ooms, Ursula Pentling
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Patent number: 5883198Abstract: An improved process is provided for the bromination of isoolefin conjugated diolefin polymers by brominating said polymer in solution in a solvent comprising a mixture of an inert saturated paraffinic hydrocarbon and an inert halogen-containing hydrocarbon. There is also provided an improved product of said process wherein the brominated polymer contains not less than 70 percent of the bound conjugated diolefin units which are brominated and also not less than 80 percent of the bound bromine atoms are in a form suitable to participate in the vulcanization of said polymer.Type: GrantFiled: February 24, 1997Date of Patent: March 16, 1999Assignee: Bayer AktiengesellschaftInventors: Gabor Kaszas, Wolfgang Baade, Heinrich Konigshofen
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Patent number: 5384385Abstract: Disclosed herein are two-component polyurethane reactive compositions containing polyisocyanates and components carrying active hydrogen which are stabilized against separation with a compound in solution containing a NH group or NH.sub.2 group and a C--N multiple bond or N--N multiple bond.Type: GrantFiled: November 13, 1992Date of Patent: January 24, 1995Assignee: Bayer AktiengesellschaftInventors: Rainer Trinks, Otto Ganster, Heinrich Konigshofen
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Patent number: 5349040Abstract: Disclosed herein is a two-component polyurethane adhesive containing an isocyanate component a), an active hydrogen containing component which is stable against demixing b), optionally a catalyst for the reaction of a) with b) and optionally an auxiliary agent and an additive, characterized in that an active hydrogen containing component which is stable against demixing b) contains at least one hydroxyl group-containing low molecular weight chain lengthening agent having at least one C-C double bond or C-C triple bond and having a molecular weight of at least 86 and a functionality of at least 2 and containing no carboxyl groups.Type: GrantFiled: October 11, 1991Date of Patent: September 20, 1994Assignee: Bayer AktiengesellschaftInventors: Rainer Trinks, Heinrich Konigshofen, Otto Ganster, Horst Stepanski, Jose Colinas-Martinez
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Patent number: 5306740Abstract: Brominated chlorine-substituted poly-1,3-butadiene is produced by a process in which an aqueous chlorine-substituted poly-1,3-butadiene latex is reacted in aqueous phase with a brominating agent in the presence of a radical-forming catalyst and/or in the presence of light at a pH value below 7 and at a temperature of 20.degree. to 95.degree. C., the brominated reaction product is optionally precipitated from the aqueous dispersion obtained and then separated from the aqueous liquid.Type: GrantFiled: April 12, 1993Date of Patent: April 26, 1994Assignee: Bayer AktiengesellschaftInventors: Hans J. Laas, Heinz W. Lucas, Klaus Nachtkamp, Heinrich Konigshofen
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Patent number: 5215618Abstract: Disclosed herein is a process for bonding substrates comprising applying a hot-melt adhesive to the surface of at least one of the substrates and contacting the surface of said substrate with the surface of the other substrate, said adhesive containing an ester group-containing polyisocyanate which is a solid below 30.degree. C. and liquid above 100.degree. C., corresponding to formula (I)A(OCO-B-NCO).sub.n (I)in whichn stands for a whole number or a fraction (statistical average) of from 2 to 6,A stands for an n-valent organic group such as is obtained by removal of hydroxyl groups from an n-valent polyhydroxyl compound in the molecular weight (Mn) range of from 800 to 6000 containing ester and/or carbonate groups andB stands for an aliphatic, cycloaliphatic or aromatic hydrocarbon group having up to 18 carbon atoms.Type: GrantFiled: August 8, 1991Date of Patent: June 1, 1993Assignee: Bayer AktiengesellschaftInventors: Lutz Schmalstieg, Eduard Haensel, Klaus Nachtkamp, Heinrich Konigshofen, Otto Ganster
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Patent number: 5106446Abstract: The present invention is directed to a mixture which can be used as an adhesive. The mixture broadly contains 1) a hydroxy group containing polyurethane, and 2) a polycarbonate and/or a polycaprolactone.Type: GrantFiled: May 7, 1990Date of Patent: April 21, 1992Assignee: Bayer AktiengesellschaftInventors: Manfred Beck, Horst Muller-Albrecht, Heinrich Konigshofen
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Patent number: 4913971Abstract: Mixtures of(A) from 20 to 99 parts by weight of a soluble polyurethane,(B) up to 50 parts by weight of an aromatic vinyl compound/diene block polymer,(C) from 0.5 to 50 parts by weight of a modified aromatic vinyl compound/diene polymer and(D) from 0 to 10 parts by weight of a polyisocyanate, optionally dissolved in an organic solvent,have proved to be excellent adhesives.Type: GrantFiled: April 27, 1989Date of Patent: April 3, 1990Assignee: Bayer AktiengesellschaftInventors: Manfred Beck, Horst Muller-Albrecht, Heinrich Konigshofen
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Patent number: 4774295Abstract: Covulcanizates with good mechanical properties obtained from mixtures of (a) from 50 to 5% by weight of chlorinated or chlorosulphonated polyethylene, acrylate rubber or ethylene vinyl alcohol copolymers and (b) from 50 to 95% by weight of partially or completely hydrogenated nitrile group-containing elastomers containing from 25 to 140 nitrile nitrogen atoms and less than 35 double bonds for each 1,000 carbon atoms, by cross linking.Type: GrantFiled: December 11, 1986Date of Patent: September 27, 1988Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Heinrich Konigshofen, Zsolt Szentivanyi, Joachim Thormer
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Patent number: 4720433Abstract: Rubber articles consisting of at least two layers consisting of at least two different elastomers, the layers being joined tightly together by sulphur vulcanization, are obtained by using a diene rubber as the first elastomer and a hydrogenated NBR-rubber with a degree of hydrogenation of from 85 to 99.7% by weight as the second elastomer, the hydrogenated NBR-rubber having an acrylonitrile content of from 16 to 49% by weight.Type: GrantFiled: April 14, 1986Date of Patent: January 19, 1988Assignee: Bayer AktiengesellschaftInventors: Heinrich Konigshofen, Zsolt Szentivanyi
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Patent number: 4675248Abstract: Co-vulcanizates which have good mechanical properties, a good resistance to oil, an effective flame resistance and a low smoke gas density are obtained from mixtures of (a) from 95 to 5% by weight of EVA rubber and (b) from 5 to 95% by weight of elastomers which contain nitrile groups and have from 25 to 140 nitrile groups and less than 35 double bonds per 1000 carbon atoms, by radical cross-linking.Type: GrantFiled: October 17, 1984Date of Patent: June 23, 1987Assignee: Bayer AktiengesellschaftInventors: Hartmuth Buding, Heinrich Konigshofen, Zsolt Szentivanyi, Joachim Thormer