Patents by Inventor Hans-Ulrich Wekel
Hans-Ulrich Wekel 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: 7465774Abstract: The use of copolymers obtainable by the radically initiated polymerization of A) 50 to 99.9 wt % of an olefinically unsaturated C3 to C5 monocarboxylic acid, an olefinically unsaturated C4 to C8 dicarboxylic acid or its anhydride, or a mixture of such carboxylic acids or carboxylic acid anhydrides with B) 0.1 to 50 wt % of one or more long-chained compounds with isolated multiple C—C bonds from the group (1) mono or polyunsaturated C8 to C30 monocarboxylic acids which may have additional hydroxyl groups and their alkaline metal and earth alkaline metal salts, alkyl esters, amides, sorbitane esters, glycerin esters and polyglycerin esters, (2) mono or polyunsaturated aliphatic Ca to C30 amines, (3) mono or polyunsaturated C8 to C30 alcohols and esters thereof with saturated Cl to C4 monocarboxylic acids, (4) to (C8 to C30 alkyl) vinyl ether which may incorporate up to 25 alkylene oxide units, and (5) final and medium-position Ci3 to C30 alkenes; C) 0 to 49.Type: GrantFiled: April 14, 1993Date of Patent: December 16, 2008Assignee: BASF AktiengesellscahftInventors: Christian Schade, Axel Sanner, Hans-Ulrich Wekel, Franz Frosch, Horst Westenfelder
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Patent number: 6531155Abstract: Granular materials are obtainable by pressing mixtures of at least one pulverulent, rheology-modifying, carboxyl-containing polymer as main component and at least one oil-soluble component.Type: GrantFiled: July 6, 1998Date of Patent: March 11, 2003Assignee: BASF AktiengesellschaftInventors: Christian Schade, Robert Heinz, Thekla Börs, Hans-Ulrich Wekel
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Patent number: 6528575Abstract: The use of crosslinked copolymers obtainable by precipitation polymerization of monomer mixtures comprising (a) monoethylenically unsaturated C3-C8-carboxylic acids, their anhydrides or mixtures of said carboxylic acids and anhydrides, (b) compounds with at least 2 non-conjugated ethylenic double bonds in the molecule as crosslinkers and, where appropriate, (c) other monoethylenically unsaturated monomers which are copolymerizable with monomers (a) and (b), in the presence of free-radical polymerization initiators and from 0.1 to 20% by weight, based on the monomers used, of saturated, nonionic surface-active compounds, as stabilizer in oil-in-water emulsions in amounts of from 0.01 to 5% of the weight of the emulsions, and cosmetic and pharmaceutical formulations based on oil-in-water emulsions which contain said precipitation polymers.Type: GrantFiled: December 28, 1995Date of Patent: March 4, 2003Assignee: BASF AktiengesellschaftInventors: Christian Schade, Horst Westenfelder, Karin Sperling-Vietmeier, Axel Sanner, Hans-Ulrich Wekel
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Patent number: 6329483Abstract: A copolymer obtainable by free-radical polymerization of A) 50-99.99% by weight of an olefinically unsaturated C3-C5 monocarboxylic acid, of an olefinically unsaturated C4-C8 dicarboxylic acid or the anhydride thereof or a mixture of such carboxylic acids or anhydrides with B) 0.01-50% by weight of an olefinically unsaturated quaternary ammonium compound of the formula I or II where R1 is C6-C20-alkyl, C6-C20-alkenyl, C5-C8-cycloalkyl, phenyl, phenyl(C1-C12-alkyl) or (C1-C12-alkyl)phenyl, R2 is hydrogen, methyl or phenyl, R3 and R4 are each H or C1-C4-alkyl, X is halogen, C1-C4-alkoxysulfonyloxy or C1-C4-alkanesulfonate, it also being possible for the latter to occur as R3 or R4 with the formation of a betaine structure, Y is O or NH, and A is C1-C6-alkylene, or a mixture of such ammonium compounds, C) 0 to 49.Type: GrantFiled: September 29, 1994Date of Patent: December 11, 2001Assignee: BASF AktiengesellschaftInventors: Christian Schade, Axel Sanner, Hans-Ulrich Wekel, Franz Frosch, Horst Westenfelder
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Patent number: 6143906Abstract: Ascorbyl sorbates of the formula I, ##STR1## where the variables independently of one another have the following meanings:R.sup.1 and R.sup.2are hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.1 -C.sub.20 -acyl;where R.sup.1 and R.sup.2, together with the oxygen atoms to which they are bonded and the carbon atoms bonded to the oxygen atoms, can form an unsubstituted or substituted heterocycle;R.sup.3 is hydrogen or a cation selected from the group consisting of alkali metals and alkaline earth metals.Type: GrantFiled: October 26, 1998Date of Patent: November 7, 2000Assignee: BASF AktiengesellschaftInventors: Harald Streicher, Linda von dem Bussche-Hunnefeld, Horst Westenfelder, Hans-Ulrich Wekel
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Patent number: 6132705Abstract: A cosmetic or pharmaceutical composition which comprises at least one polymer or copolymer which is obtainable by free-radical emulsion or suspension polymerization in the presence of at least one chain-transfer reagent, has a glass transition temperature above -35.degree. C. and a content of organic volatile constituents .ltoreq.0.5% by weight, and is at least 20% by weight composed of a (meth)acrylic ester.Type: GrantFiled: June 26, 1997Date of Patent: October 17, 2000Assignee: BASF AktiengesellschaftInventors: Volker Schehlmann, Christian Schade, Axel Sanner, Karin Sperling, Hans-Ulrich Wekel
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Patent number: 6015551Abstract: The disclosure relates to a copolymer obtainable by radically initiated polymerization of the following: A) 70-99.9 wt. % an olefinically unsaturated C.sub.3 -C.sub.5 monocarboxylic acid, an olefinically unsaturated C.sub.4 -C.sub.8 dicarboxylic acid or its anhydride, or a mixture of such carboxylic acids; with B) 0.1-30 wt. % one or more multiply olefinically unsaturated carboxylic acid derivatives of formula (I)Z--Y--(CHR.sup.3 --CH.sub.2 --X).sub.n --R.sup.4 (I)in which Z is a vinyl or allyl group or structure (a), ##STR1## R.sup.1, R.sup.2 are hydrogen or methyl, R.sup.3 is hydrogen, methyl or ethyl, R.sup.4 is a singly or multiply olefinically unsaturated alkenyl or cycloalkenyl group or a singly or doubly olefinically unsaturated arylalkylene group, X is oxygen or NH, Y is oxygen, NH or N-alkyl, n is a number between 0 and 50; and C) 0-29.9 wt. % other copolymerizable monomers. The proposed copolymer can be used as a thickener or dispergent for aqueous systems.Type: GrantFiled: June 2, 1998Date of Patent: January 18, 2000Assignee: BASF AktiengesellschaftInventors: Christian Schade, Hans-Ulrich Wekel, Axel Sanner, Karin Sperling
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Patent number: 5872149Abstract: The present invention relates to monomeric, oligomeric and polymeric bisesters of alkyl- or alkenyldicarboxylic acid derivatives and polyalcohols, and their use as solubilizers, emulsifiers and/or detergents. In particular, the bisesters are advantageously used in cosmetic compositions, detergents and cleaners, pharmaceutical compositions, foodstuffs and crop protection compositions. The invention furthermore relates to a process for preparing these bisesters.Type: GrantFiled: August 15, 1997Date of Patent: February 16, 1999Assignee: BASF AktiengesellschaftInventors: Gabriele Dralle-Voss, Gunter Oetter, Hans-Ulrich Wekel, Knut Oppenlander
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Patent number: 5756078Abstract: Aqueous preparations comprising an alkyl polyglycoside and a polyethylene glycol ether derivative of the formula I ##STR1## where R.sup.1 is alkyl having 8-22 carbon atoms,A is a divalent radical derived from a diisocyanate andn is 20-400are described.Type: GrantFiled: February 3, 1997Date of Patent: May 26, 1998Assignee: BASF AktiengesellschaftInventors: Knut Oppenlander, Gunter Oetter, Hans-Ulrich Wekel
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Patent number: 5292800Abstract: Water-in-oil emulsions of water-soluble or water-swellable polymers, in which the oil phase of the emulsion consists of not less than 50% by weight of an oil of vegetable or animal origin, contain, as water-in-oil emulsifiers, compounds which are obtainable by(A) reacting a C.sub.10 -C.sub.22 -fatty alcohol with epichlorohydrin in a molar ratio of from 1:0.5 to 1:1.5 to give a glycidyl ether,(B) reacting the glycidyl ether with (1) a saturated C.sub.2 -C.sub.6 -alcohol containing from 2 to 6 OH groups or (2) the monoether thereof with a C.sub.10 -C.sub.22 -fatty alcohol, in a molar ratio of glycidyl ether to (1) or (2) of from 1:0.5 to 1:6, in the presence of an acid or base and(C) alkoxylating the reaction product from (B) with one or more C.sub.2 -C.sub.4 -alkylene oxides in a molar ratio of from 1:1 to 1:6,if necessary, from 5 to 95% by weight of the stated water-in-oil emulsifier being replaced with other water-in-oil emulsifiers.Type: GrantFiled: August 13, 1992Date of Patent: March 8, 1994Assignee: BASF AktiengesellschaftInventors: Dietmar Moench, Heinrich Hartmann, Hans-Ulrich Wekel
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Patent number: 5147644Abstract: Mixtures of polyglycerol fatty esters obtainable by partial esterification of a polyglycerol mixture consisting offrom 0 to 5% by weight of monoglycerol,from 15 to 40% by weight of diglycerol,from 30 to 55% by weight of triglycerol,from 10 to 25% by weight of tetraglycerol,from 0 to 15% by weight of pentaglycerol,from 0 to 10% by weight of hexaglycerol andfrom 0 to 5% by weight of higher polyglycerolswith one or more saturated fatty acids of 12 to 22 carbon atoms or one or more unsaturated fatty acids of 16 to 22 carbon atoms, where the unsaturated fatty acid or fatty acid mixture used may furthermore contain up to 10% by weight of saturated fatty acids of 16 to 22 carbon atoms and the degree of esterification of the saturated or unsaturated fatty acids in the mixture is from 20 to 70%, are used as emulsifiers in cosmetic and pharmaceutical formulations.Type: GrantFiled: February 22, 1991Date of Patent: September 15, 1992Assignee: BASF AktiengesellschaftInventors: Knut Oppenlaender, Brigette Wegner, Karl Stork, Franz Frosch, Hans-Ulrich Wekel