Patents by Inventor Wolfram Weiss
Wolfram Weiss 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: 6429252Abstract: A mixture comprises an amino resin and a polymer which consists to the extent of at least 80% by weight of C2- to C3 alkylene oxide groups.Type: GrantFiled: October 4, 1999Date of Patent: August 6, 2002Assignee: BASF AktiengesellschaftInventors: Wolfram Weiss, Matthias Kummer, Manfred Niessner, Hans Schupp
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Publication number: 20020040091Abstract: A mixture comprises an amino resin and a polymer which consists to the extent of at least 80% by weight of C2- to C3 alkylene oxide groups.Type: ApplicationFiled: October 4, 1999Publication date: April 4, 2002Inventors: WOLFRAM WEISS, MATTHIAS KUMMER, MANFRED NIESSNER, HANS SCHUPP
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Patent number: 6284825Abstract: Solutions of aminotriazine resins at least 30 mol % of whose alkylol groups are etherified with a C1-C16 alkanol in a mono-C1-C4 alkyl glycol of the formula R1—O—(R2—O—)w(R3—O—)x(R2—O—)y(R3—O—)z H. I where R1 is C1-C4 alkyl, R2 is CH2—CH2 and R3 is and w, x, y and z are an integer from 0 to 10 and at least one of them is other than 0 or in a solvent mixture which consists to the extent of at least 20% by weight a of mono-C1-C4 alkyl glycol of the above formula.Type: GrantFiled: October 1, 1999Date of Patent: September 4, 2001Assignee: BASF AktiengesellschaftInventors: Wolfram Weiss, Gerhard Fischer, Manfred Niessner, Werner Schnurr
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Patent number: 5859084Abstract: A process for the preparation of a radiation-curable acrylate composition, wherein to compounds A containing at least 2 acrylic groups there are added benzophenone derivatives which are not copolymerizable by free-radical copolymerization and which contain at least one primary or secondary amino group or a hydroxyl group or a mercapto group.Type: GrantFiled: July 15, 1996Date of Patent: January 12, 1999Assignee: BASF AktiengesellschaftInventors: Jochen Schroder, Wolfgang Reich, Erich Beck, Martin Fischer, Wolfram Weiss
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Patent number: 5760226Abstract: Binders compriseA) an aminotriazine derivative in which the primary amino groups of the triazine are methylolated on average with at least one mole of formaldehyde per mole of primary amino groups, and these methylol groups are etherified on average with at least 0.5 mol of primary alcohol per mole of methylol group and the primary alcohols are a mixture containinga) 0.5-99.5 mol % of a C.sub.1 -C.sub.4 -alkanol andb) 99.5-0.5 mol % of an alcohol of the formulaR.sup.1 --O--?R.sup.2 --O!.sub.n --R.sup.3 --OH I,in which R.sup.1 is C.sub.1 -C.sub.24 -alkyl or C.sub.6 -C.sub.12 -aryl which may be unsubstituted or substituted by from one to three C.sub.1 -C.sub.8 -alkyl groups, and R.sup.2 and R.sup.3 independently of one another are C.sub.2 -C.sub.8 -alkylene and n is an integer from 1 to 100, or of a mixture of higher-boiling alcohols having a boiling point of above 120.degree. C.Type: GrantFiled: January 23, 1997Date of Patent: June 2, 1998Assignee: BASF AktiengesellschaftInventors: Manfred Niessner, Wolfram Weiss, Jurgen Tropsch, Matthias Kummer, Georg Meichsner
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Patent number: 5576386Abstract: A process for the continuous polymerization of vinyl monomers to form vinyl polymers having a molecular weight M.sub.n of from 1000 to 20,000 comprisesa. carrying out the polymerization within an annular gap from 0.5 to 10 mm in width,b. confining the annular gap on the inner surface with a rotor, andc. carrying out the polymerization at from 110.degree. to 270.degree. C.Type: GrantFiled: January 28, 1993Date of Patent: November 19, 1996Assignee: BASF AktiengesellschaftInventors: Fritz E. Kempter, Manfred Niessner, Ralph Diener, Heino Thiele, Wolfram Weiss, Hans Renz
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Patent number: 5496591Abstract: Radiation-curable binders which are obtained by reactingA) an amine/formaldehyde condensate having a molar ratio of formaldehyde to amino groups of from 1:1 to 2:1 withB) one or more esters, having a free hydroxyl group, of acrylic acid or of methacrylic acid with polyalcohols which contain from two to four alcoholic hydroxyl groups, from 0.1 to 0.3 hydroxyl equivalent of component B) being used per methylol equivalent of component A),in the presence of a strong acid are suitable for use in coating materials.Type: GrantFiled: May 9, 1994Date of Patent: March 5, 1996Assignee: BASF AktiengesellschaftInventors: Reinhard Lang, Erich Beck, Edmund Keil, Adolf Nuber, Harro Petersen, Hans Renz, Horst Schmidt, Wolfram Weiss
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Patent number: 5442090Abstract: Radiation-curable urethane acrylate compounds containing amine and urea groups and based on di- or polyisocyanates, hydroxy compounds and amines contain secondary or tertiary amino groups which are bonded to isocyanate via hydroxyl groups and are obtainable by an addition reaction of primary or secondary amines with hydroxyacrylates.Type: GrantFiled: March 4, 1991Date of Patent: August 15, 1995Assignee: BASF AktiengesellschaftInventors: Erich Beck, Wolfram Weiss, Hans Renz, Alfred Lindner
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Patent number: 5096938Abstract: Radiation-curable catalysts are obtainable by reactingA) 1 equivalent of a dihydric to hexahydric oxyalkylated C.sub.2 -C.sub.10 -alcohol withB) from 0.05 to 1 equivalent of a dibasic to tetrabasic C.sub.3 -C.sub.36 -carboxylic acid or its anhydride andC) from 0.1 to 1.5 equivalents of acrylic acid and/or methacrylic acidand reacting the excess carboxyl groups with an equivalent amount of epoxide compound, and are used in radiation-curable coating materials.Type: GrantFiled: April 3, 1990Date of Patent: March 17, 1992Assignee: BASF AktiengesellschaftInventors: Erich Beck, Wolfram Weiss, Horst Schmidt
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Patent number: 4724244Abstract: Cathodic coating agents which are rendered water-dilutable by the addition of an acid, contain binder systems possessing basic nitrogen groups and may or may not contain pigments, dyes, fillers, solvents, antioxidants, other surface coating assistants and/or additional crosslinking components, the binder system containing sulfonate and/or phosphonate groups or the esters of these groups in an amount of from 0.05 to 3% by weight, and the preparation of such products.The novel coating agents are useful for the cathodic electrocoating of electrically conductive substrates.Type: GrantFiled: April 27, 1987Date of Patent: February 9, 1988Assignee: BASF AktiengesellschaftInventors: Fritz E. Kempter, Wolfram Weiss, Rolf Osterloh, Albrecht Zosel
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Patent number: 4668785Abstract: N,N',N"-tris-(2-hydroxyethyl)-melamine, if required, as a mixture with N-mono- and N,N'-bis-(2-hydroxyethyl)-melamine, is prepared by reacting melamine with ethanolamine in the presence of an acidic catalyst by a method in which the reaction is carried out at from 120.degree. to 250.degree. C. using an excess of ethanolamine, and the molar ratio of free ethanolamine to the sum of free and converted melamine is not permitted to fall below 4:1 during the entire reaction time, and the stated (2-hydroxyethyl)-melamines are used as modifiers in the prepartion of aminoplast resins which are suitable for laminating surfaces.Type: GrantFiled: June 13, 1985Date of Patent: May 26, 1987Assignee: BASF AktiengesellschaftInventors: Klaus Ebel, Wolfgang Reuther, Wolfram Weiss, Ludwig Lelgemann
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Patent number: 4621133Abstract: A process for the preparation of curable etherified aminoplast resins based on urea/aldehyde polycondensates, and the preparation of surface coating resins.Urea is first reacted with an .alpha.,.alpha.-dialkylaldehyde, as much as 50 mol % of which may be replaced by formaldehyde, in a molar ratio urea/aldehyde of about 1:2, at from 50.degree. to 120.degree. C., in the presence of an acid and in the presence or absence of an alcohol or of other organic solvents, and the 2-oxohexahydropyrimidine derivative obtained in this cyclocondensation is then condensed with formaldehyde in the presence of one or more alcohols and an acid.These aminoplast resins are useful as both acid-curable resins and as resins for baking finishes.Type: GrantFiled: July 5, 1985Date of Patent: November 4, 1986Assignee: BASF AktiengesellschaftInventors: Harro Petersen, Gunther Immel, Wolfram Weiss, Horst Schmidt, Gerd Busse
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Patent number: 4618371Abstract: Coating materials containing aliphatic .alpha.-hydroxyketones of the general formula ##STR1## where R and R.sup.1 are each hydrogen or a hydrocarbon radical of 1 to 4 carbon atoms, as antiskimming agents. These .alpha.-hydroxyketones are particularly useful in paints and finishes based on oxidatively drying alkyd resins.Type: GrantFiled: May 15, 1985Date of Patent: October 21, 1986Assignee: BASF AktiengesellschaftInventors: Wolfram Weiss, Wolf-Dieter Balzer, Rolf Fikentscher, Guenther Immel, Hans Wolf
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Patent number: 4594403Abstract: Amide-containing epoxy resin/amine adducts are prepared by a process in which an epoxy resin/amine adduct containing primary and/or secondary aminoalkyl groups is reacted with a carboxylic acid in the presence of esterification catalysts, particularly advantageously in the presence of an alcohol.The products prepared according to the invention are useful as binders for cathodic electrocoating.Type: GrantFiled: June 13, 1985Date of Patent: June 10, 1986Assignee: BASF AktiengesellschaftInventors: Fritz E. Kempter, Gunther Sabelus, Eberhard Schupp, Wolfram Weiss
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Patent number: 4393207Abstract: Alkoxyalkylaminotriazine trans-etherification products are obtained by reacting an alkoxyalkylaminotriazine of the general formula ##STR1## where X is hydrogen, alkyl, phenyl, alkylphenyl or ##STR2## A and B are hydrogen, alkyl, alkenyl or ##STR3## and R and R' are hydrogen or alkyl, with from 0.1 to 6 moles, per mole of alkoxyalkylaminotriazine, of a .beta.-hydroxyaldehyde of the general formula ##STR4## where R", R"' and R"" are identical or different and each is hydrogen or alkyl or R"' and R"" together with the .alpha.-carbon atom form a cyclopentane or cyclohexane ring, and R"' and/or R"" can also be hydroxyalkyl and R"" can also be phenyl, in the presence of an acidic catalyst, and removing the alcohol resulting from the trans-etherification. The alkoxyalkylaminotriazine trans-etherification products may be used in baking finishes and acid-hardening surface coatings.Type: GrantFiled: July 1, 1981Date of Patent: July 12, 1983Assignee: BASF AktiengesellschaftInventors: Rainer Hummerich, Wolfram Weiss, Franz Merger, Guenther Immel, Hans-Joachim Kraus, Karl-Clemens Peters
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Patent number: 4387212Abstract: A process for the preparation of etherified or non-etherified aminoplast resins, wherein an aminotriazine of the general formula (I) ##STR1## where X is hydrogen, alkyl, phenyl, alkylphenyl or --NH.sub.2, is reacted with a .beta.-hydroxyaldehyde of the general formula (II) ##STR2## where R', R" and R'" are identical or different and each is hydrogen or alkyl, or R" and R'", together with the .alpha.-carbon atom, are a cyclopentane or cyclohexane ring, and R" and/or R'" can be hydroxyalkyl and R" can be phenyl, the reaction being carried out in the presence of not less than one alcohol and an acid catalyst for the preparation of etherified aminoplast resins and in the presence or absence of an acid catalyst for the preparation of non-etherified aminoplast resins. The aminoplast resins prepared according to the invention can be used as surface-coatings raw materials.Type: GrantFiled: September 20, 1982Date of Patent: June 7, 1983Assignee: BASF AktiengesellschaftInventors: Rainer Hummerich, Herbert Hahn, Wolfram Weiss, Guenther Immel, Hans-Joachim Krause, Karl-Clemens Peters
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Patent number: 4367294Abstract: A process for the preparation of polyurethane foams modified with melamine-formaldehyde precondensates, in which the precondensates employed are storage-stable, aqueous 40-85% strength by weight resin solutions which are obtained by condensing melamine with formaldehyde in a molar ratio of 1:1.1-1.75 in aqueous solution at a pH which, at least periodically, is above 8, and at from 60 to 130.degree. C., until one part by volume of resin solution can be diluted with from 0.5 to 4 parts by volume of water at 20.degree. C. without causing a persisting cloudiness.Type: GrantFiled: May 22, 1981Date of Patent: January 4, 1983Assignee: BASF AktiengesellschaftInventors: Klaus Hahn, Peter Horn, Matthias Marx, Heinz Weber, Wolfram Weiss, Rolf Wurmb