Patents by Inventor Dietmar Schapel
Dietmar Schapel 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: 5362834Abstract: Improved gel compounds based on reaction products of polyols and polyisocyanates are characterized in that the polyol component consists of a mixture of a) one or more polyols having hydroxyl values below 112 and b) one or more polyols having hydroxyl values of 112 to 600 and in that the isocyanate index of the reaction mixture is in the range from 15 to 70. They may be used as pressure-distributing elements.Type: GrantFiled: April 28, 1992Date of Patent: November 8, 1994Assignee: Bayer AktiengesellschaftInventors: Dietmar Schapel, Heinz-Dieter Ebert, Hartwig Grammes
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Patent number: 5173515Abstract: New particularly effective fire retardent elements based on foams and expandable graphite are characterized in that they additionally contain one or more components from the group consisting of phosphate-containing polyols, borates and amine salts.Type: GrantFiled: May 10, 1990Date of Patent: December 22, 1992Assignee: Bayer AktiengesellschaftInventors: Wulf von Bonin, Dietmar Schapel
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Patent number: 4980072Abstract: Surface-distributed hydrocarbons, in particular mineral oil and mineral oil processing products, are removed by allowing water and a polyether containing isocyanate end groups to act on the hydrocarbons and by mechanically removing the gel containing hydrocarbons which is formed.Type: GrantFiled: November 1, 1989Date of Patent: December 25, 1990Assignee: Bayer AktiengesellschaftInventors: Thomas Augustin, Dietmar Schapel, Peter Nowak
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Patent number: 4902348Abstract: The present invention is directed to a process for the manufacture of plasterboard optionally strengthened with reinforcing materials by mixing gypsum capable of rehydration with water and optionally reinforcing materials and subsequently pressing the resulting mixture, characterized in that polyisocyanates are added to the mixture used for producing the plasterboard and/or are applied to the surface of the finished plasterboard. The invention is also directed to the optionally reinforced plasterboard.Type: GrantFiled: October 12, 1988Date of Patent: February 20, 1990Assignee: Bayer AktiengesellschaftInventors: Gert Kossatz, Heinz Sattler, Rudiger Kammerer, Hanns I. Sachs, Dietmar Schapel
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Patent number: 4826948Abstract: Impregnating agents are provided consisting essentially of(a) an NCO-prepolymer or NCO-semi-prepolymer which is curable by atmospheric moisture, with an NCO content of 2 to 25% by weight, based on(a1) an organic polyisocyanateand(a2) a compound with at least 2 alcohol hydroxyl groups,(b) a solvent which is inert with respect to isocyanate groups in which the (a1) organic polyisocyanate is a polyisocyanate with exclusively aliphatically or cycloaliphatically bound isocyanate groups and the a2) polyhydroxyl compound is a polysiloxane of the molecular weight range of 300 to 5000 which has at least 2 alcoholically bound hydroxyl groups.A method of impregnating mineral substrates with such impregnating agents is also provided.Type: GrantFiled: May 20, 1988Date of Patent: May 2, 1989Assignee: Bayer AktiengesellschaftInventors: Bernhard Jansen, Hanns P. Muller, Roland Richter, Dietmar Schapel, Rudolf Schmidt
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Patent number: 4810536Abstract: Impregnating agents are provided consisting essentially of(a) an NCO-prepolymer or NCO-semi-prepolymer which is curable by atmospheric moisture, with an NCO content of 2 to 25% by weight, based on(a1) an organic polyisocyanate and(a2) a compound with at least 2 alcohol hydroxyl groups,(b) a solvent which is inert with respect to isocyanate groups in which the (a1) organic polyisocyanate is a polyisocyanate with exclusively aliphatically or cycloaliphatically bound isocyanate groups and the (a2) polyhydroxyl compound is a polysiloxane of the molecular weight range of 300 to 5000 which has at least 2 alcoholically bound hydroxyl groups.A method of impregnating mineral substrates with such impregnating agents is also provided.Type: GrantFiled: August 10, 1987Date of Patent: March 7, 1989Assignee: Bayer AktiengesellschaftInventors: Bernhard Jansen, Hanns P. Muller, Roland Richter, Dietmar Schapel, Rudolf Schmidt
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Patent number: 4748974Abstract: A stiff, water resistant laminated medical or veterinary dressing is described along with a procedure for forming the final hardened dressing. The dressing is obtained by treating a gypsum bandage with an aqueous dispersion of a synthetic resin and then forming a layer from it which is immediately adjacent to a layer formed from a water hardenable synthetic resin bandage. Either layer may be formed first and further layers may be formed so long as the layers alternate between those formed from wraps of the gypsum bandages and those formed from wraps of the synthetic resin bandage.Type: GrantFiled: February 17, 1987Date of Patent: June 7, 1988Assignee: Bayer AktiengesellschaftInventors: Roland Richter, Wolfram Mayer, Hanns P. Muller, Dietmar Schapel, Dietmar Strache
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Patent number: 4681851Abstract: Waste water and/or outgoing air are purified by contact with a polyurethane hydrogel containing surface active coal, a polymer having cationic groups and cells having enzymatic activity and being capable of growth.Type: GrantFiled: September 22, 1986Date of Patent: July 21, 1987Assignee: Bayer AktiengesellschaftInventors: Jorg Baumgarten, Werner Frommer, Theo Mann, Imre Pascik, Hans-Georg Rast, Dietmar Schapel
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Patent number: 4661099Abstract: The present disclosure is concerned with self-adhesive sheet-like structures made by adhering an adhesive polyurethane gel material to a supporting substrate and the utilization of such structures in the medical field to adhere materials such as plasters, wound dressings and appliances to the human body, and in other fields to connect articles, such as the parts of a fractured or cracked object, to one another by means of an adhesive bond. The gel is formed by immobilizing a high molecular weight polymeric polyol in the matrix of a covalently crosslinked polyurethane which is prepared by reacting polyisocyanates having an isocyanate functionality of at least 2 with higher molecular weight polyhydroxyl compounds having a hydroxyl functionality of at least 3. These reactants are selected in accordance with the following formula which relates the isocyanate number, K, (isocyanate to hydroxyl equivalents ratio times 100) to the average functionalities of the polyisocyanates (F.sub.Type: GrantFiled: November 8, 1984Date of Patent: April 28, 1987Assignee: Bayer AktiengesellschaftInventors: Miklos von Bittera, Dietmar Schapel, Ulrich von Gizycki, Roland Rupp
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Patent number: 4634672Abstract: A biologically active composition is prepared comprising a polyurethane hydrogel containing surface active coal, a polymer having cationic groups and cells having enzymatic activity and being capable of growth. The composition is used for purifying waste water and outgoing air.Type: GrantFiled: August 12, 1985Date of Patent: January 6, 1987Assignee: Bayer AktiengesellschaftInventors: Jorg Baumgarten, Werner Frommer, Theo Mann, Imre Pascik, Hans-Georg Rast, Dietmar Schapel
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Patent number: 4570622Abstract: The present invention relates to a constructional material which is stable in storage and which is kept under moisture-free conditions and which comprises a substrate and a reactive one-component system which hardens on exposure to air by reaction with moisture. The present invention also relates to a process for the production of a constructional material which is stable in storage.Type: GrantFiled: October 24, 1983Date of Patent: February 18, 1986Assignee: Bayer AktiengesellschaftInventors: Wulf von Bonin, Ulrich von Gizycki, Kuno Wagner, Dietmar Schapel
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Patent number: 4544547Abstract: The invention relates to ectoparasiticide-containing polyurethanes which contain spreading agents and ectoparasiticides or mixtures of ectoparasiticides and to said ectoparasiticide-containing polyurethanes in the form of sheets, films, shaped articles, coatings or impregnations. Also included in the invention is the use of said polyurethane compositions for combating ectoparasiticides.Type: GrantFiled: March 14, 1983Date of Patent: October 1, 1985Assignee: Bayer AktiengesellschaftInventors: Miklos von Bittera, Hubert Dorn, Dietmar Schapel, Wilhelm Stendal, Herbert Voege, Manfred Federman, Ulrich von Gizyoki
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Patent number: 4543247Abstract: The invention relates to ectoparasiticide-containing polyurethane collars for animals containing spreading agents and ectoparasiticides as well as methods for their manufacture.Type: GrantFiled: January 6, 1983Date of Patent: September 24, 1985Assignee: Bayer AktiengesellschaftInventors: Miklos von Bittera, Manfred Federmann, Ulrich von Gizycki, Dietmar Schapel, Wilhelm Stendel, Herbert Voege, Hubert Dorn
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Patent number: 4469502Abstract: A process for supplying plants with nutrients uniformly and over a long period of time by the addition of nutrient-charged synthetic resin ion exchangers and mineral fertilizers to the culture medium, according to which the nutrient-charged synthetic resin ion exchangers are employed together with those mineral fertilizers with particle size <500 .mu.m which have been coated with massive polyurethanes having a particular water absorbing capacity which is adapted in a particular manner to the water solubility of the mineral fertilizer; furthermore, fertilizers containing nutrient-charged synthetic resin ion exchangers, and the mineral fertilizers coated with the massive polyurethanes having a particular water absorbing capacity.Type: GrantFiled: May 6, 1983Date of Patent: September 4, 1984Assignee: Bayer AktiengesellschaftInventors: Harold Heller, Dietmar Schapel
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Patent number: 4456642Abstract: A gel of specific composition is encased in a flexible elastic casing to form a gel pad. The gel used is made up of (a) 15-62 weight % (based on (a)+(b)) of a high molecular weight covalently cross-linked polyurethane matrix and (b) 85-38 weight % (based on (a)+(b)) of a liquid dispersing agent. The liquid dispersing agent is a polyhydroxy compound having an average molecular weight between 1000 and 12,000, and an OH number between 20 and 112. This dispersing agent contains essentially no hydroxy compounds with a molecular weight below 800. The gel may also include fillers and/or additives known to those in the art. Suitable casing materials include polyurethane films, woven fabrics, knitted fabrics, and mesh fabrics. These gel pads are particularly useful as mattress, mattress inserts, wheelchair cushions, car seats, car seat supports and as pad elements for upholstered furniture.Type: GrantFiled: January 22, 1982Date of Patent: June 26, 1984Assignee: Bayer AktiengesellschaftInventors: Hans-Heribert Burgdorfer, Dietmar Schapel, Gottfried Schneider, Wulf von Bonin, Ulrich von Gizycki
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Patent number: 4452905Abstract: An aqueous preparations of a gel-like consistency, containing(A) 1-15% by weight of hydrophilic polyurethanes,(B) optionally up to 3% by weight of hydrophilic polymers which are water-soluble or capable of swelling in water, based on unsaturated monomers and/or modified cellulose derivatives,(C) optionally up to 2% by weight of surface active agents,(D) optionally up to 30% by weight of powder, and(E) 0.3-30% by weight of oil.The aqueous preparation is useful as a porosifying agent in the production of porous ceramic bodies.Type: GrantFiled: December 10, 1982Date of Patent: June 5, 1984Assignee: Bayer AktiengesellschaftInventors: Franz Drinkuth, Wulf von Bonin, Dietmar Schapel, Artur Lorenz
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Patent number: 4448914Abstract: An aqueous preparations of a gel-like consistency, containing(a) oils in quantities of from 0.03 to 30% by weight,(b) water-soluble or swellable vinyl polymers in quantities of from 0.2 to 10% by weight,(c) water-soluble or swellable polymers based on natural substances in quantities of from 0.01 to 5% by weight,(d) surfactants in quantities of from 0.01 to 2% by weight and optionally(e) inorganic or organic powders in quantities of from 0.5 to 30% by weight.The aqueous preparation is useful as a porosifying agent in the production of porous ceramic bodies.Type: GrantFiled: December 10, 1982Date of Patent: May 15, 1984Assignee: Bayer AktiengesellschaftInventors: Franz Drinkuth, Wulf von Bonin, Dietmar Schapel, Artur Lorenz
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Patent number: 4411262Abstract: The present invention relates to a constructional material which is stable in storage and which is kept under moisture-free conditions and which comprises a substrate and a reactive one-component system which hardens on exposure to air by reaction with moisture. The present invention also relates to a process for the production of a constructional material which is stable in storage.Type: GrantFiled: December 31, 1981Date of Patent: October 25, 1983Assignee: Bayer AktiengesellschaftInventors: Wulf von Bonin, Ulrich von Gizycki, Kuno Wagner, Dietmar Schapel
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Patent number: 4404296Abstract: A polyol gel is made from 15-62 wt. % (based on the sum of polyurethane matrix plus dispersing agent) of a high molecular weight covalently cross-linked polyurethane matrix; 85-38 wt. % (based on the sum of polyurethane matrix plus dispersing agent) of a liquid dispersing agent which is firmly bonded to the matrix; and optionally, active ingredients, fillers, additives, catalysts, and mixtures thereof. The liquid dispersing agent is a polyhydroxyl compound having a molecular weight of between 1,000 and 12,000 and an OH number between 20 and 112. This dispersing agent should have virtually no hydroxyl compounds having a molecular weight below 800 present. These gel compositions may be used to make mold impressions and highly stable active-ingredient releasing compositions.Type: GrantFiled: January 22, 1982Date of Patent: September 13, 1983Assignee: Bayer AktiengesellschaftInventor: Dietmar Schapel
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Patent number: 4402725Abstract: A fertilizer for the long term and uniform supply of plants with nutrient ions comprising a covalently crosslinked hydrogel in which are embedded ion exchangers which are laden with plant nutrients; furthermore a process for the long term and uniform supply of plants with nutrient ions wherein a covalently crosslinked hydrogel in which are embedded ion exchangers which are laden with plant nutrients is applied to the plants or their environment.Type: GrantFiled: March 6, 1981Date of Patent: September 6, 1983Assignee: Bayer AktiengesellschaftInventors: Harold Heller, Dietmar Schapel, Claus Hentschel, Manfred Dahm