Patents Assigned to Rutgerswerke Aktiengesellschaft
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Patent number: 5556705Abstract: Neutral metal complex salts with additional ligands acting as bases and a process for their preparation and their use as latent polymerization catalysts for the production of pre-cured products which can be further cured without another curing catalyst.Type: GrantFiled: February 13, 1995Date of Patent: September 17, 1996Assignee: Rutgerswerke AktiengesellschaftInventors: Axel Bottcher, Manfred Doring, Jurgen Zehrfeld
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Patent number: 5532330Abstract: A heat-curable, formaldehyde-free binding agent comprising a polyflavonoid type tannin and as a curing catalyst, a compound having a weak acid reaction curable at relatively high temperatures and compatible with cellulose containing materials such as wood chips for the production of particle boards.Type: GrantFiled: October 4, 1994Date of Patent: July 2, 1996Assignee: Rutgerswerke AktiengesellschaftInventors: Antonio Pizzi, Willi Roll, Berthold Dombo
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Patent number: 5520482Abstract: A soil barrier to prevent the spread of harmful substances in the soil or ground water based on humic substances precipitated in the soil and a process for its creation.Type: GrantFiled: April 10, 1995Date of Patent: May 28, 1996Assignee: Rutgerswerke AktiengesellschaftInventors: Franz D. Oeste, Joachim Kempfert
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Patent number: 5494675Abstract: A method of treating dandruff in warm-blooded animals comprising applying to the hair of a warm-blooded animal an anti-dandruff effective amount of an alkali metal or ammonium salt of a low molecular weight huminate with a mean molecular weight of 1000 with a range of 300 to 1500 and a method of treating or preventing dandruff.Type: GrantFiled: September 11, 1992Date of Patent: February 27, 1996Assignee: Rutgerswerke AktiengesellschaftInventors: Helmut Beilharz, Bernard Seubert, Urs Riede
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Patent number: 5486538Abstract: A precious metal salt of a low molecular humic acid containing 1 to 5% by weight of the precious metal processes for their preparation and a method of stabilizing alkali metal humate and their medical uses.Type: GrantFiled: August 29, 1994Date of Patent: January 23, 1996Assignee: Rutgerswerke AktiengesellschaftInventors: Bernhard Seubert, Anton F. Haase
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Patent number: 5444030Abstract: A process for the preparation of complex salts with additional coordinated ligands comprising reacting with through mixing at 20.degree. to 200.degree. C. a complex-forming metal salt of a metal of the second and third main groups of the Periodic Table and the subgroups thereof with a stoichiometric amount of at least one member of the group consisting of a chelating ligand and a Lewis base in the absence of a solvent according to the equation:M.sub.m.sup.a+ (SR.sup.b-)n+xL.multidot.cH+yB.sup.- .fwdarw.m[M.sup.a+ (SR.sup.b-)(n-o)L.sub.x B.sub.y ]+o.multidot.SR.sup.b- +c.multidot.H.sup.+Iwherein M is a metal ion, SR is an acid radical of an organic or inorganic acid, B is a Lewis base, and L is a chelating ligand, m.multidot.a=b.multidot.(n-o)+c.multidot.x, wherein a=an integer of 1-8, b=an integer of 1-3, c=an integer of 0-4, m=an integer of 1-3, n=an integer of 1-8, o=an integer of 0-8, x=an integer of 0-4, y=and integer of 1-16, wherein (n-o)+x+y.ltoreq.Type: GrantFiled: September 9, 1993Date of Patent: August 22, 1995Assignee: Rutgerswerke Aktiengesellschaft AGInventors: Axel Bottcher, Manfred Doring, Jurgen Zehrfeld
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Patent number: 5439863Abstract: Neutral metal complex salts with additional ligands acting as bases and a process for their preparation and their use as latent polymerization catalysts for the production of pre-cured products which can be further cured without another curing catalyst.Type: GrantFiled: September 9, 1993Date of Patent: August 8, 1995Assignee: Rutgerswerke AktiengesellschaftInventors: Axel Bottcher, Manfred Doring, Jurgen Zehrfeld
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Patent number: 5429865Abstract: A composite material comprising a fabric of high-modulus fiber material and optionally a portion of other synthetic fiber material and a binder, the binder layers being essentially disposed only between fabric plies, the binder being a resol modified with polyvinyl butyral, the resol content being 4 to 20% by weight and the polyvinyl butyral content being 75 to 95% by weight of the binder suitable for projectile inhibiting laminates for the manufacture of protective helmets and armor against projectiles.Type: GrantFiled: August 23, 1994Date of Patent: July 4, 1995Assignees: Rutgerswerke Aktiengesellschaft, Akzo Nobel Faser AGInventors: Axel Bottcher, Ulrich Stieber, Michael Mohr, Achim Fels
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Patent number: 5399606Abstract: A homogenous non-tacky thermosetting plastic powder mixture formed by mixing component A comprising a solid phenol novolac resin powder and a hardener containing a small amount of an oil-like substance liquid at room temperature with component B comprising a liquid resol, fillers and optionally additives which when containing an abrasive are useful for the production of filler-containing shaped elements or resin-bonded grinding elements.Type: GrantFiled: October 18, 1993Date of Patent: March 21, 1995Assignee: Rutgerswerke Aktiengesellschaft AGInventors: Michael Konig, Achim Hansen, Arno Gardziella, Josef Suren
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Patent number: 5382608Abstract: A binder mixture containing lignin or lignins with reactive groups and phenol-novolac in a weight ratio of 95:5 to 50:50 useful for the production of non-woven fabrics and wood fiber materials.Type: GrantFiled: August 5, 1994Date of Patent: January 17, 1995Assignee: Rutgerswerke AktiengesellschaftInventors: Arno Gardzielia, Ken Kurple, Achim Hansen, Stephan Schroter, Willi Roll
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Patent number: 5380862Abstract: A process for the preparation of isomer-free 2,5-dichloropyridine comprising alkoxylating 2-chloro-pyridine or 2-bromo-pyridine in the presence of a base at elevated temperatures, chlorinating with gaseous chlorine the alkoxylated product at ambient temperatures in an aqueous suspension in the presence of an auxiliary base, a small amount of a catalyst and optionally a small amount of an emulsifier, treating the isomer reaction mixture with a Vielsmeyer-Haack reagent, subjecting 2,5- and 2,3-dichloropyridine mixture to water vapor distillation and crystallizing the crystalline product from an alcohol-water mixture.Type: GrantFiled: August 23, 1993Date of Patent: January 10, 1995Assignee: Rutgerswerke AktiengesellschaftInventors: Stefan Sendelbach, Wolfgang Weiss, Winfried Orth, Hans W. Kleffner, Albrecht Laufer
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Patent number: 5373070Abstract: A binder mixture containing lignin or lignins with reactive groups and phenol-novolac in a weight ratio of 95:5 to 50:50 useful for the production of non-woven fabrics and wood fiber materials.Type: GrantFiled: December 3, 1993Date of Patent: December 13, 1994Assignee: Rutgerswerke Aktiengesellschaft AGInventors: Arno Gardziella, Ken Kurple, Achim Hansen, Stephan Schroter, Willi Roll
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Patent number: 5360915Abstract: A modified alkali metal or ammonium huminate being made from molecules of the group consisting of ##STR1## wherein R.sub.1, R.sub.3 and R.sub.4 are individually hydrogen or --OH, R.sub.2 is ##STR2## or --CH.sub.2 -- and R.sub.5 and R.sub.6 are individually selected from the group consisting of hydrogen, --OH and --OCH.sub.3, with the proviso that R.sub.4, R.sub.5 and R.sub.6 are not all hydrogen at the same time and their preparation and their medical uses.Type: GrantFiled: October 14, 1992Date of Patent: November 1, 1994Assignee: Rutgerswerke Aktiengesellschaft AGInventors: Urs N. Riede, Bernhard Seubert
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Patent number: 5345001Abstract: An aqueous resol solution produced by an alkaline condensation of a phenolic compound with an aldehyde in a molar ratio of 1:1.5 to 2.5 with an alkali metal content of 1 to 5.0% by weight of the reaction solution, neutralizing the solution after the end of condensation at least partially with an aromatic hydroxy carboxylic acid at a temperature not greater than 50.degree. C. and then concentrating the reaction mixture which is readily dilutable with water.Type: GrantFiled: August 23, 1993Date of Patent: September 6, 1994Assignee: Rutgerswerke Aktiengesellschaft AGInventors: Stephan Schroter, Achim Hansen, Arno Gardziella, Peter Adolphs
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Patent number: 5336529Abstract: Bubble-free solder stop lacquer coatings of circuitboards are obtained for high conductor runs and close spacing, in that one proceeds from a photopolymerizable low-solvent lacquer, which is heated to pouring viscosity through a heatable roll and doctor blade by means of infrared lamps and is poured onto cooled circuitboards as a lacquer curtain.Type: GrantFiled: March 9, 1993Date of Patent: August 9, 1994Assignee: Rutgerswerke AktiengesellschaftInventor: Hans J. Schafer
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Patent number: 5304237Abstract: A water-soluble chromium-free wood preservative comprising at least one copper salt and an alkanolamine and a polymeric quaternary ammonium borate formed by simultaneous reaction of (A) an amine selected from the group consisting of ##STR1## wherein R.sub.1 is alkyl or alkenyl of 8 to 22 carbon atoms or when R.sub.2 and R.sub.3 are --(C.sub.2 H.sub.4 O).sub.x --H or --(C.sub.3 H.sub.6 O).sub.x --H, R.sub.1 is alkyl of 1 to 22 carbon atoms, R.sub.2 is selected from the group consisting of hydrogen, alkyl of 1 to 22 carbon atoms, --(C.sub.2 H.sub.4 O).sub.x --H, --(C.sub.3 H.sub.6 O).sub.x --H and --CH.sub.2 --CH.sub.2 --NH.sub.2, R.sub.3 is selected from the group consisting of hydrogen, --(C.sub.2 H.sub.4 O).sub.x --H, --(C.sub.3 H.sub.6 O).sub.x --H and CH.sub.2 --CH.sub.2 --CH.sub.2 NH.sub.2, R.sub.4 and R.sub.6 are individually alkyl of 1 to 4 carbon atoms or --(CH.sub.2 H.sub.4 O).sub.x --H or --(C.sub.3 H.sub.6 O).sub.x --H, R.sub.5 and R.sub.2 are individually --(C.sub.2 H.sub.4 O).sub.x --H or -- (.Type: GrantFiled: January 21, 1993Date of Patent: April 19, 1994Assignee: Rutgerswerke Aktiengesellschaft AGInventors: Volker Barth, Helmut Hartner
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Patent number: 5300593Abstract: A binding agent for molding compositions and molded bodies produced by reacting a low molecular weight lignin from the Organosolv process with phenol in a weight ratio of 1:20 to 3:1 at 100.degree. to 180.degree. C., adjusting the pH to an acidic value and condensing the mixture with 0.2 to 0.9 moles of formaldehyde per mole of phenol at 60.degree. to 120.degree. C. to form the binding agent useful for producing curable molding compositions, high-temperature molding compositions, refractory products, textile fleeces and friction coatings as well as carbon materials.Type: GrantFiled: August 17, 1993Date of Patent: April 5, 1994Assignee: Rutgerswerke Aktiengesellschaft AGInventors: Arno Gardziella, Achim Hansen, Stephan Schroter, Josef Suren
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Patent number: 5288774Abstract: A binding agent comprising 95 to 50% by weight of a furan resin, 5 to 50% by weight of lignin from the Organosolv process and organic and/or inorganic acid curing agents useful for the production of curable molding compositions, high temperature-stable molding substances and refractory products, especially casting cores and casting molds.Type: GrantFiled: October 28, 1992Date of Patent: February 22, 1994Assignee: Rutgerswerke Aktiengesellschaft AGInventors: Arno Gardziella, Achim Hansen, Alois Kwasniok
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Patent number: 5284651Abstract: Physiologically active, non-toxic, non-teratogenic and non-mutagenic huminates produced by oxidation of polyvalent phenols in aqueous alkaline medium at a reaction temperature under 40.degree. C., the pH value of the reaction medium always being over 9.0 during the oxidation and the supply of oxidant being proportioned so that the content of the quinones corresponding to the polyvalent phenols is always less than 0.5%, based on the polyvalent phenols used, and that the oxidation reaction is stopped when the quinone concentration decreases despite oxidant supply.Type: GrantFiled: October 14, 1992Date of Patent: February 8, 1994Assignee: Rutgerswerke Aktiengesellschaft AGInventors: Urs N. Riede, Bernhard Seubert
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Patent number: 5260405Abstract: A binding agent for molding compositions and molded bodies produced by reacting a low molecular weight lignin from the Organosolv process with phenol in a weight ratio of 1:20 to 3:1 at 100.degree. to 180.degree. C., adjusting the pH to an acidic value and condensing the mixture with 0.2 to 0.9 moles of formaldehyde per mole of phenol at 60.degree. to 120.degree. C. to form the binding agent useful for producing curable molding compositions, high-temperature molding compositions, refractory products, textile fleeces and friction coatings as well as carbon materials.Type: GrantFiled: October 26, 1992Date of Patent: November 9, 1993Assignee: Rutgerswerke Aktiengesellschaft AGInventors: Arno Gardziella, Achim Hansen, Stephan Schroter, Josef Suren