Patents Assigned to Chemie-Anlagenbau Bischofsheim GmbH
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Patent number: 4352895Abstract: The present invention provides a process for the continuous production of plates, which are optionally laminated on all sides, from foamed synthetic resins and especially from polyurethane hard foams, in which a foaming synthetic resin is passed through a channel formed by endless running bands, wherein the side bands are subjected to external pressure and press towards the middle of the plate, said side bands being pressed in the course of the foaming by the foaming pressure thereby arising into their actual side-limiting positions, said side bands finally assuming the positions which correspond to the desired plate breadth and contour.The present invention also provides a device for taking up the lateral foam pressure in continuously operating band plants, comprising counterpressure devices which exert on the side bands, adapted to move in the plane of the plate, an optimum counterpressure for the reaction characteristics of the foaming synthetic resin.Type: GrantFiled: September 5, 1980Date of Patent: October 5, 1982Assignee: Chemie-Anlagenbau Bischofsheim GmbHInventor: Karl-Heinz Hilterhaus
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Patent number: 4351354Abstract: The supply of a reagent to a mixing chamber is controlled by apparatus comprising a housing 1 having an inlet for the reactant, an outlet 4 to the mixing chamer 5, an inlet 3 for a flushing medium, an outlet 6 for recirculating the reactant and, within the housing, a movable member 7 having first and second ducts 10 and 12, duct 10 connecting inlet 2 with either of outlets 4 and 6 independently, and duct 12 connecting inlet 3 with outlet 4 when inlet 2 and outlet 6 are connected, inlet 3 being blocked when inlet 2 and outlet 4 are connected.Type: GrantFiled: July 27, 1979Date of Patent: September 28, 1982Assignee: Chemie-Anlagenbau Bischofsheim GmbHInventors: Karl-Heinz Hilterhaus, Reinhard Moser
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Patent number: 4340681Abstract: The present invention relates to a process for the manufacture of foamed or non-foamed compositions, in which one or more organic or inorganic compounds containing at least two isocyanate groups is or are reacted in the presence of an alkaline aqueous solution, an alkaline aqueous suspension or an alkaline aqueous slurry of an alkali metal hydroxide and/or alkaline earth metal hydroxide, and of one or more catalysts and, optionally, inert fillers and/or, optionally, one or more volatile substances as blowing agents. According to the invention, a mixture of the compound or compounds containing the isocyanate groups and the alkali metal hydroxide or oxide and/or alkaline earth metal hydroxide or oxide is added to a mixture of water and catalyst. The oxide employed is preferably calcium oxide.Type: GrantFiled: May 29, 1980Date of Patent: July 20, 1982Assignees: Reuter Technologie GmbH, Chemie-Anlagenbau Bischofsheim GmbHInventors: Franz G. Reuter, Karl-Heinz Hilterhaus
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Patent number: 4171390Abstract: A process of producing a porous polyurethane resin filter material. A first solution containing an NCO-adduct dissolved in a highly polar organic solvent is admixed into a second solution containing a highly polar organic solvent and at least one hydrazine hydrate, carbodihydrazide, piperazine and 1,4-diaminopiperazine. The first solution is admixed into the second solution over an extended period of time during which time the viscosity of the admixture is monitored and during which time the NCO pre-adduct and the hydrazine (or the like) react to form a polyurethane reaction product. During this time, the viscosity of the admixture increases. Admixture is continued with monitoring of the viscosity of the admixture until a point is reached at which the addition of even the minutest amount of the first solution into the admixture would result in instantaneous gelling thereof. At this point, the solids content of the final admixture is between 15 and 35% by weight.Type: GrantFiled: May 17, 1978Date of Patent: October 16, 1979Assignees: Chemie-Anlagenbau Bischofsheim GmbH, Reuter Technologie GmbHInventors: Karl Hilterhaus, Franz G. Reuter
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Patent number: 4156059Abstract: An organic-inorganic polymer for both porous and non-porous plastic products is produced by reacting a borate, in an aqueous alkaline solution, with a poly functional isocyanate.Type: GrantFiled: June 21, 1976Date of Patent: May 22, 1979Assignees: Chemie-Anlagenbau Bischofsheim GmbH, Reuter Technologie GmbHInventors: Karl H. Hilterhaus, Franz G. Reuter
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Patent number: 4148734Abstract: This invention relates to filter material consisting substantially of a microporous and/or macroporous sheet structure obtained by coagulation of a polymer solution in which at least one surface area of the sheet structure is abraded more or less, depending on the desired pore size and a process for producing said filter materials.Type: GrantFiled: August 15, 1977Date of Patent: April 10, 1979Assignees: Chemie-Anlagenbau Bischofsheim GmbH, Reuter Technologie GmbHInventors: Karl H. Hilterhaus, Franz G. Reuter
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Patent number: 4136238Abstract: This invention relates to a process for preparing organosilicate polymers by reaction of a water glass solution with a compound having at least two isocyanate groups. The reaction is carried out in the presence of a zwitterion compound acting as catalyst and optionally in the presence of propellants and/or water glass hardening agents, the zwitterion compound having in the molecule at least one group with positive charge, at least one group with negative charge, and additionally at least one hydrogen atom with Zerewitinov activity.Type: GrantFiled: December 4, 1975Date of Patent: January 23, 1979Assignees: Metallgesellschaft A.G., Reuter Technologie GmbH, Chemie-Anlagenbau Bischofsheim GmbHInventors: Karl H. Hilterhaus, Franz G. Reuter, Tankred Menzel
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Patent number: 4125693Abstract: Process for the production of polyurethanes dissolved in a solvent by mixing linear pre-adducts having terminal NCO groups dissolved in solvents with hydrazines and/or dihydrazine compounds and or diamines dissolved in solvents, for the purpose of forming partially cross-linked polyurethanes, whilst continuously measuring the viscosity until the viscosity shows a value which is located in the shaded zone of the section of curves shown in FIG. 1, the addition of the pre-adduct solution being carried out at such a speed that the final solution has solids content of between 25 and 35 per cent by weight, and coagulation of the obtained solution to fabricated shapes, especially to microporous sheet structures.Type: GrantFiled: February 28, 1977Date of Patent: November 14, 1978Assignees: Chemie-Anlagenbau Bischofsheim GmbH, Metallgesellschaft AGInventor: Karl-Heinz Hilterhaus
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Patent number: 4123599Abstract: This invention relates to a process for the manufacture of foams based on phenolic resins, wherein phenolic resins are reacted, in the presence of metal powders and/or metal oxide powders, with organic diisocyanates and/or polyisocyanates.Type: GrantFiled: September 27, 1976Date of Patent: October 31, 1978Assignees: Chemie-Anlagenbau Bischofsheim GmbH, Reuter Technologie GmbH, MetallgesellschaftInventors: Karl-Heinz Hilterhaus, Franz G. Reuter
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Patent number: 4108954Abstract: This invention relates to a process for producing crosslinked elastomeric shaped polyurethane structures from crosslinked polyurethanes dissolved in solvents produced by the combination of the following steps:1. preparation of an NCO pre-adduct in a non-critical NCO/OH proportion from a treated polyol and the corresponding diisocyanate in a highly polar solvent;2. preparation of a solution containing crosslinked polyurethanes by introducing into the polymerization vessel a chain propagating and/or chain crosslinking agent and/or a combination thereof, and stirring into said vessel the NCO pre-adduct solution from step 1 such that the viscosity becomes an indication of the degree of the instantaneously occurring chain propagation and chain crosslinking reactions. In this way a solution is obtained which is at the borderline state between solution and gel and in which highly crosslinked polymer portions are uniformly distributed;3. molding;4. removal of the solvent by evaporation.Type: GrantFiled: November 10, 1975Date of Patent: August 22, 1978Assignees: Chemie-Anlagenbau Bischofsheim GmbH, Reuter Technologie GmbHInventors: Karl Heinz Hilterhaus, Franz Gottfried Reuter
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Patent number: 4098730Abstract: This invention relates to a non-flammable homogeneous or foamed organo-red mud polymers, which essentially comprise the reaction product of red mud and a compound possessing at least two isocyanate groups.Type: GrantFiled: August 27, 1976Date of Patent: July 4, 1978Assignees: Metallgesellschaft Aktiengesellschaft, Chemie-Anlagenbau Bischofsheim GmbH, Reuter Technologie GmbHInventors: Karl Heinz Hilterhaus, Franz Gottfried Reuter
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Patent number: 4059659Abstract: This invention relates to a process for producing finished and/or irreversibly embossed microporous sheet structures by coagulation of a polyurethane solution, in which prior to the coagulation of the polyurethane solution a finishing agent is mixed into it or a finishing agent is applied to the free surface of the polyurethane solution which has been spread out flat and embossing is then carried out during or shortly after the coagulation or after the washing, but still before the drying, or else the microporous sheet structure obtained and into which the finishing agent has been mixed previously is, after drying, pressed between two plates or passed under pressure between at least two oppositely rotating rolls, at least one of which is highly polished.Type: GrantFiled: October 22, 1975Date of Patent: November 22, 1977Assignees: Chemie-Anlagenbau Bischofsheim GmbH, Reuter Technologie GmbHInventor: Karl Heinz Hilterhaus