Patents by Inventor Wolfgang Druschke
Wolfgang Druschke 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: 4937282Abstract: Aqueous dispersions of copolymers of(a) from 70 to 85% by weight of nontertiary butyl (meth)acrylates,(b) from 8 to 27.2% by weight of (meth)acrylates (A) whose homopolymers have a glass transition temperature greater than that of the polybutyl (meth)acrylate up to 0.degree. C. and (meth)acrylates (B) whose homopolymers have a glass transition temperature below that of the polybutyl (meth)acrylate, the weight ratio of the (meth)acrylates (A) to the (meth)acrylates (B) being from 3:1 to 1:3,(c) from 2 to 15% by weight of methyl methacrylate, styrene and/or acrylonitrile and(d) 0.8 to 5% by weight of monoolefinically unsaturated mono- and/or dicarboxylic acids of 3 to 5 carbon atoms and/or their amides which are unsubstituted or substituted at the nitrogen atoms by alkyl and/or alkylol radicals of 1 to 4 carbon atoms and/or hydroxyalkyl (meth)acrylates where the alkyl groups are of 2 to 5 carbon atoms,are used for coating sheet-like substrates.Type: GrantFiled: June 1, 1989Date of Patent: June 26, 1990Assignee: BASF AktiengesellschaftInventors: Peter Pfoehler, Hermann Seyffer, Juergen Vietmeter, Johannes Tuerk, Wolfgang Druschke, Klaus Schagerer
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Patent number: 4931494Abstract: Aqueous polymer dispersions which have a long shelf life are obtainable by dispersing a mixture of from 15 to 70% by weight of a copolymer (A) of(I) from 1.5 to 15% by weight of copolymerizable compounds of 3 to 10 carbon atoms which contain a carboxyl or carboxylic anhydride group,(II) from 65 to 98.5% by weight of C.sub.1 -C.sub.20 -alkyl acrylates or methacrylates,(III) from 0 to 20% by weight of vinylaromatics,(IV) from 0 to 20% by weight of copolymerizable carbonyl compounds and(V) from 0 to 10% by weight of further copolymerizable organic compounds not stated under (I) to (IV), and from 30to 85% by weight of a copolymer (B) of from 60 to 100% by weight of the monomers (II) and from 0 to 40% by weight of the monomers (III) to (V), with the proviso that the copolymers (A) and (B) together contain, as components, more than 65% by weight of alkyl (meth)acrylates (II) whose homopolymers have glass transition temperatures of less than 0.degree. C.Type: GrantFiled: June 23, 1988Date of Patent: June 5, 1990Assignee: BASF AktiengesellschaftInventors: Gerhard Auchter, Thomas Schwerzel, Rolf Osterloh, Gerhard Neubert, Peter Pfoehler, Wolfgang Druschke, Helmut Jaeger
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Patent number: 4920157Abstract: Radiation-curable contact adhesives containing (A) oligomeric or polymeric reaction products of (a) diisocyanates, (b) polyesterols and/or polyetherols, (c) optionally C.sub.2 -C.sub.50 -diols, (d) C.sub.2 -C.sub.20 -hydroxyalkyl (meth)acrylates and (e) monohydroxyalkylcarboxylic acids in defined weight proportions and (e) monovinyl compounds in an amount of 2-90% by weight, based on A+B, produce contact adhesive layers of particularly high surface tackiness and particularly high cohesion.Type: GrantFiled: March 15, 1988Date of Patent: April 24, 1990Assignee: BASF AktiengesellschaftInventors: Guenther Schulz, Wolfgang Druschke, Helmut Jaeger
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Patent number: 4898909Abstract: Aqueous dispersions of copolymers having a glass transition temperature of not more than -45.degree. C. and a K value greater than 80 consist of not less than 80% by weight of acrylates of alkanols of 8 to 12 carbon atoms, from 1 to 4% by weight of .alpha.,.beta.- monoolefinically unsaturated carboxylic acids and/or their amide derivatives and from 0.1 to 3% by weight of .alpha.-methylstyrene, and are used for the production of self-adhesive structures having good tack at as low as -40.degree. C.Type: GrantFiled: December 30, 1987Date of Patent: February 6, 1990Assignee: BASF AktiengesellschaftInventors: Juergen Vietmeier, Peter Pfoehler, Gundo Brauch, Wolfgang Druschke, Albrecht Zosel
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Patent number: 4873023Abstract: Compounds of the general formulae ##STR1## where R is versatyl and R' is unsubstituted or alkyl-substituted straight-chain alkylene of 4 or 5 carbon atoms can be prepared by reacting the versatic ester of 1,3-dihydroxy-propyl-2 acrylate and/or of 2,3-dihydroxy-propyl-1 acrylate with equimolar amounts of saturated or monoolefinically unsaturated cyclic dicarboxylic anhydrides having 4 or 5 carbon atoms and an oxygen atom in the ring at from 50.degree. to 150.degree. C. in the presence of customary esterification catalysts and can be used as reactive diluents in radiation-curable contact adhesives.Type: GrantFiled: November 21, 1988Date of Patent: October 10, 1989Assignee: BASF AktiengesellschaftInventors: Guenther Schulz, Wolfgang Druschke, Helmut Jaeger
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Patent number: 4769410Abstract: Crosslinkable polymeric compositions which are dissolved or dispersed in an organic solvent, a process for their preparation and their use.These polymeric compositions which undergo crosslinking at room temperature or elevated temperatures after drying are obtained by reacting polymeric organic compounds containing carbonyl groups with polyhydrazides in the presence of monoketones or monoaldehydes.They are useful as crosslinking agents for polyepoxide compounds.Type: GrantFiled: October 10, 1986Date of Patent: September 6, 1988Assignee: BASF AktiengesellschaftInventors: Rainer Blum, Gerd Rehmer, Rolf Osterloh, Wolfgang Druschke, Hans Sander
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Patent number: 4543393Abstract: Mixtures which are liquid at room temperature, have a long shelf life and can be activated by heat and which comprise(A) polyols and/or polyamines, component (A) having a viscosity of less than 100 Pa.s at room temperature, the OH number being less than 112 and the mean functionality of the starting materials being from 1.1 to 6, and(B) polyisocyanates which are dispersed in (A), are stabilized to (A) as a result of a phase-separating deactivation at the surface of the dispersed particles, and are present in an amount such that there are from 0.1 to 2 equivalents of the total isocyanate present in the polyisocyanate per equivalent of hydroxyl or amino groups of component (A),are particularly useful for contact adhesives.Type: GrantFiled: July 16, 1984Date of Patent: September 24, 1985Assignee: BASF AktiengesellschaftInventors: Rainer Blum, Hellmut Buensch, Wolfgang Druschke, Helmut Mueller
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Patent number: 4529772Abstract: Contact adhesive dispersions contain(A) an aqueous dispersion of a copolymer A which has a glass transition temperature below 0.degree. C. and consists of(a) from 50 to 99% by weight of esters of acrylic acid with non-tertiary alkanols,(b) from 0 to 50% by weight of esters of acrylic or methacrylic acid and/or vinyl esters and/or (meth)acrylonitrile and/or styrene and/or tert.-butyl acrylate,(c) from 0.5 to 5% by weight of monoolefinically unsaturated carboxylic acids and/or their amides which are unsubstituted or substituted at the nitrogen atoms by alkyl and/or alkylol radicals, and/or hydroxyalkyl (meth)acrylates, and(d) from 0.5 to 5% by weight of carbonyl-containing monomers and(B) from 0.05 to 2 moles of a water-soluble dihydrazine compound per mole of carbonyl groups present in the copolymer A.Type: GrantFiled: May 24, 1984Date of Patent: July 16, 1985Assignee: BASF AktiengesellschaftInventors: Wolfgang Druschke, Hans Kast, Alexander Zettl
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Patent number: 4469831Abstract: The object of this invention is a moisture-curing, storage stable, single-component polyurethane system comprising:A. a polyurethane prepolymer with a free isocyanate content of 1 to 5 percent by weight;B. a dialdimine having the formulaR[--N.dbd.CH--C(CH.sub.3).sub.2 --CH.sub.2 --O--CO--CH--(CH.sub.3).sub.2 ].sub.2in whichR is a divalent aliphatic radical with 2 to 10 carbon atoms, aliphatic radical having 4 to 10 carbon atoms and containing ether oxygen and/or lower alkylamino nitrogen atoms, cycloaliphatic radical with 6 to 15 carbon atoms oraromatic radical with 6 to 21 carbon atoms;andC. an acid catalyst selected from the group consisting of aliphatic carboxylic acids, aromatic carboxylic acids, toluenesulfonic acid, and mixtures thereof.The polyurethane systems are used as coating, sealing, casting, spackling and bonding materials.Type: GrantFiled: April 28, 1983Date of Patent: September 4, 1984Assignee: BASF AktiengesellschaftInventors: Uwe Bueltjer, Heinrich Horacek, Wolfgang Druschke, Gernot Franzmann, Erhard Klahr, Hans-Juergen Foerster
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Patent number: 4371659Abstract: Aqueous polymer dispersions containing up to 75% by weight of polymer are prepared advantageously by emulsion copolymerization in the presence of conventional anionic emulsifiers, polymerization initiators and small amounts of polymerization inhibitors, at conventional polymerization temperatures, by copolymerizing at least two monomers A, which per se are not copolymerizable with one another, mixed with from 60 to 95% by weight of at least one monomer B, which is copolymerizable with both monomers A, in the presence of a polymerization inhibitor, by the emulsion feed process, wherein (a) the initial aqueous phase at the start of the monomer emulsion feed contains from 0.01 to 0.Type: GrantFiled: March 20, 1981Date of Patent: February 1, 1983Assignee: Basf AktiengesellschaftInventors: Wolfgang Druschke, Albrecht Kerckow, Bernd Stanger
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Thermoplastic segmented elastomeric copolyether-esters and their use as pressure-sensitive adhesives
Patent number: 4321341Abstract: Thermoplastic segmented elastomeric copolyether-esters which substantially consist of a plurality of recurring short-chain and long-chain ester units linked to one another by ester bonds, the proportion of the short-chain ester units of the formula ##STR1## where R is the divalent radical remaining after removal of the carboxyl groups of aromatic dicarboxylic acids having a molecular weight of <350 and A is the divalent radical remaining after removal of the hydroxyl groups of a diol having a molecular weight of <250, being from 15 to 75% by weight, and the proportion of the long-chain ester units of the formula ##STR2## where R is defined as above and B is the divalent radical remaining after removal of the terminal hydroxyl groups from a long-chain glycol, being from 25 to 85% by weight of the copolyester, and which contain from 0.01 to 5 mole %, based on copolyester, of trifunctional or more highly functional compounds, serving as branching agents, chemically incorporated into the polymer molecule.Type: GrantFiled: June 6, 1980Date of Patent: March 23, 1982Assignee: BASF AktiengesellschaftInventors: Rainer Neuberg, Hans G. Matthies, Wolfgang Druschke -
Patent number: 4089824Abstract: Hot-melt pressure-sensitive adhesive composition based on a rubbery block copolymer of a monovinyl-aromatic compound or monovinylidene-aromatic compound and butadiene.The composition contains a selectively hydrogenated radial block copolymer with terminal polymer blocks of the monovinyl- or mono-vinylidene-aromatic compound and, in the middle position, butadiene-based polymer blocks which had a 1,2-vinyl content of from 30 to 70 per cent by weight prior to hydrogenation. The compositions may be used, in particular, for the production of self-adhesive materials.Type: GrantFiled: October 18, 1976Date of Patent: May 16, 1978Assignee: BASF AktiengesellschaftInventors: Klaus Bronstert, Volker Ladenberger, Wolfgang Druschke, Wolfgang Groh, Helmut Mueller
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Patent number: 4087392Abstract: Pressure-sensitive adhesives are manufactured by reacting a mixture ofA from 10 to 90% by weight of a polyol having a molecular weight of from 300 to 8,000 and a hydroxyl number of from 20 to 85 andB from 5 to 60% by weight of an amorphous thermoplastic tackifier resin having a softening point of from 40.degree. to 140.degree. C and a molecular weight of from 200 to 7,500, withC from 5 to 30% by weight of a polyisocyanate masked with CH-acidic compounds,The percentages by weight being based on the total weight of components (a), (b) and (c).Type: GrantFiled: July 3, 1975Date of Patent: May 2, 1978Assignee: BASF AktiengesellschaftInventors: Heinrich Hartmann, Wolfgang Druschke, Klaus Eisentraeger, Helmut Mueller
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Patent number: 4007215Abstract: 1-(Bis-ethoxycarbonyl)-acetylamino-3-methyl-3-(bis-ethoxycarbonyl)-acetylam inomethyl-5-dimethyl-cyclohexane, a new blocked diisocyanate, its manufacture from isophorone diisocyanate and diethyl malonate, and its use.Type: GrantFiled: July 7, 1975Date of Patent: February 8, 1977Assignee: BASF AktiengesellschaftInventors: Heinrich Hartmann, Wolfgang Druschke