Abstract: The invention relates to a method for the mechanical testing of a structure (1, 10) formed as one part, comprising the following steps: a) identifying a sub-element (2, 11) in the structure (1, 10) formed as one part for generating a test element (3, 3?) that is intended to undergo mechanical testing, wherein the sub-element (2, 11) only represents a portion of the structure (1, 10) formed as one part, b) determining the spatial-geometrical structure of the sub-element (2, 11), c) generating the test element (3, 3?) on the basis of the spatial-geometrical structure of the sub-element (2, 11) and at least in part or in full by way of a 3D printing process, d) carrying out at least one mechanical test on the test element (3, 3?) generated.
Type:
Grant
Filed:
June 20, 2017
Date of Patent:
February 15, 2022
Assignee:
Covestro Deutschland AG
Inventors:
Dirk Achten, Thomas Büsgen, Dirk Dijkstra, Nicolas Degiorgio
Abstract: The present invention relates to a method for reducing the aniline content of hypersaline wastewater, said method comprising the steps of (a) providing a composition A comprising hypersaline wastewater and aniline, and (b) contacting composition A with cells of at least one halophilic microbial strain, thereby generating a composition B comprising said composition A and cells of said at least one halophilic microbial strain. The present invention further concerns a method for the production of chlorine and sodium hydroxide. Further encompassed by the present invention is a composition comprising hypersaline wastewater, aniline, and cells of at least one halophilic microbial strain.
Type:
Grant
Filed:
January 9, 2018
Date of Patent:
February 15, 2022
Assignee:
COVESTRO DEUTSCHLAND AG
Inventors:
Heike Heckroth, Christoph Herwig, Donya Kamravamanesh
Abstract: The invention relates to a process for the preparation of triaryl-organo borates from boronic ester and the use of these substances in photo initiator systems, photopolymer compositions comprising such photo initiator systems, a holographic medium comprising said photopolymer composition and the respective hologram.
Abstract: The present invention relates to an improved method for the partial colouring, in particular for the coloured laser engraving, of plastic parts, in particular thermoplastic plastic parts, more particularly thermoplastic plastic parts, comprising a layer structure, and to the resulting partially coloured, preferably coloured and laser engraved, plastic parts, in particular thermoplastic plastic parts.
Type:
Grant
Filed:
June 22, 2018
Date of Patent:
February 8, 2022
Assignee:
Covestro Deutschland AG
Inventors:
Georgios Tziovaras, Ciro Piermatteo, Heinz Pudleiner, Kira Planken, Stefan Janke
Abstract: The present invention relates to a cosmetic composition and a cleaning and caring product comprising the same, use and application method of the cleaning and caring product. The cosmetic composition comprises: a polymerization product, which is obtained by reacting a system comprising the following components: an anionic polymer, an amphoteric polymer and water, the weight ratio of the anionic polymer to the amphoteric polymer is in the range from 1:100 to 100:1 and the total weight of the anionic polymer and the amphoteric polymer is no less than 0.1 wt %, based on that the amount of the composition is 100 wt %; an optional cationic polymer; an optional active ingredient; an optional additive; and an optional cosmetically acceptable medium.
Abstract: The invention relates to a method for producing a polyisocyanurate composite material, comprising the following steps: a) providing a polyisocyanate composition A) which contains monomer polyisocyanates at an amount of at least 2 wt. %, and b) catalytically trimerising the polyisocyanate composition A) in the presence of at least one fibrous filler material B) and a trimerisation catalyst C), to form the polyisocyanurate composite material, said trimerisation catalyst C) comprising at least one quaternary ammonium salt and/or a metal salt. The invention also relates to polyisocyanurate composite materials that can be obtained according to the claimed method, and to the use of same to produce a component and components consisting of or containing a claimed polyisocyanurate composite material.
Type:
Grant
Filed:
May 3, 2017
Date of Patent:
February 1, 2022
Assignee:
COVESTRO DEUTSCHLAND AG
Inventors:
Heiko Hocke, Mathias Matner, Dirk Achten, Paul Heinz
Abstract: The present invention relates to a method of controlling a concentration of a first component of a rectification column for separating a binary mixture of the first component with a second component on the basis of temperature measurements, wherein a control path defined by temperature sensors (T3, T2, T6) arranged in the longitudinal direction of the column is linearized with the aid of an estimated temperature profile, wherein a real temperature profile T*(h), determined by means of the temperature sensors, is approximated by a function T(h) in dependence on a column height h, wherein the column id divided into two sections along the column height h and the function T(h) is defined section by section on the basis, in each case, of a logistical function.
Abstract: A method for continuously producing a product (A1) by way of at least two coupled-together chemical reactions (C1, C2), wherein at least two input substances (E1, E2) are fed to a first chemical reaction (C1), wherein a plurality of intermediate substances (Z1, Z2) are produced from the input substances (E1, E2) by the first chemical reaction (C1), wherein at least one of the intermediate substances (Z2) is fed to a second chemical reaction (C2), wherein the at least one fed intermediate substance (Z2) is further processed by the second chemical reaction (C2), in particular using at least one further substance (W1, W2) in a second chemical reaction (C2) to form a plurality of output substances (A1, A2), that is to say to form the chemical product (A1) and at least one further output substance (A2), wherein the flow rates (Fi) of the fed substances (E1, E2, Z1, W1, W2, A2) that are fed to one of the reactions (C1, C2) are set by a respective actuating element (VE1, VE2, VW1, VW 2, VZ 2, VA1), wherein each of t
Abstract: The present invention relates to polyaspartic acid ester compositions which contain polyaspartic acid esters with primary amino groups and small amounts of fumaric acid dialkyl esters, to a method for preparing same and the use thereof as a reactive component for polyisocyanates in two-component polyurethane systems.
Type:
Grant
Filed:
September 14, 2018
Date of Patent:
January 25, 2022
Assignee:
COVESTRO DEUTSCHLAND AG
Inventors:
Dorota Greszta-Franz, Jan Weikard, Matthias Wintermantel, Robert Maleika, Thomas Klimmasch, Thomas Schuettler
Abstract: The present invention relates to specific translucent, preferably lightfast, polyurethane foams which have a high light transmission and are therefore suitable e.g. for producing translucent polyurethane foams or multilayer composite elements, for example for producing structural components, more particularly as roof elements such as strip lights and light domes, as wall elements such as a panel, in vehicles, in lamps, as furniture, as partitions and in sanitary facilities.
Type:
Grant
Filed:
March 28, 2018
Date of Patent:
January 18, 2022
Assignee:
Covestro Deutschland AG
Inventors:
Lutz Böhnke, Dirk Achten, Robert Maleika
Abstract: A flat laminate element made of thermoplastic is hot-formed in a two-stage method. In a first stage, the flat laminate which includes film(s) and/or panels(n) is placed on a flat frame-shaped pallet and is heated to a forming temperature in a heating zone between two flat heat screens in a contactless manner. The edge zone of the hot flat laminate element lies on the pallet such that the laminate piece cannot be clamped in a first laminate direction but rather can be slide on the pallet in this direction. Two non-flat rigid contours which are identical or largely identical act on two opposing parallel laminate edge sections uniaxially and perpendicularly to the laminate plane and only in the first laminate direction, i.e. monodirectionally, and shape the entire heated laminate element into a monodirectionally molded blank.
Abstract: The invention relates to a method for cleaning a phosgene conducting apparatus, comprising: washing the apparatus with hot inert gas, followed by washing the apparatus with cold inert gas; conveying gaseous ammonia for breaking down phosgene residues with a continuous increase in temperature until a maximum temperature ranging between 30° C. to 120° C. is reached; once the maximum temperature is reached, shutting down the ammonia supply and the conveying of inert gas, optionally followed by washing the apparatus with an aqueous stream.
Type:
Grant
Filed:
September 3, 2018
Date of Patent:
January 4, 2022
Assignee:
Covestro Deutschland AG
Inventors:
Dirk Manzel, Peter Plathen, Peter Wolf, Udo Boegel
Abstract: The present invention relates to plastic films with improved laser engraving capability, chemical resistance and mechanical stress, special embodiments of such films in the form of co-extrusion films, layer structures comprising such films, use of such films, as well as security documents, preferably identification documents, containing such films.
Type:
Grant
Filed:
December 18, 2017
Date of Patent:
December 14, 2021
Assignee:
Covestro Deutschland AG
Inventors:
Heinz Pudleiner, Georgios Tziovaras, Kira Planken, Stefan Janke, Christoph Köhler
Abstract: The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.
Type:
Grant
Filed:
January 6, 2020
Date of Patent:
December 7, 2021
Assignee:
Covestro Deutschland AG
Inventors:
Sven Meyer-Ahrens, Stephan Reiter, Engin Cavlan, Matthäus Gossner
Abstract: A process is described for producing a three dimensional structure, the process including the following steps a) applying of at least a first material M1 onto a substrate to build a first layer L1 on the substrate; b) layering of at least one further layer Ly of the first material M1 or of a further material Mx onto the first layer L1, wherein the at least one further layer Ly covers the first layer L1 and/or previous layer Ly-1 at least partially to build a precursor of the three dimensional structure; c) curing the precursor to achieve the three dimensional structure; wherein at least one of the materials M1 or Mx provides a Mooney viscosity of >10 ME at 60° C. and of <200 ME at 100° C. before curing. Also, a three dimensional structure is described which is available according to the process according to the invention.
Type:
Grant
Filed:
July 7, 2017
Date of Patent:
December 7, 2021
Assignee:
Covestro Deutschland AG
Inventors:
Dirk Achten, Thomas Büsgen, Dirk Dijkstra, Roland Wagner
Abstract: A lighting device for vehicles, in particular a signal light, with a light source for emitting a light beam and an optical unit associated with the light source for producing a predetermined light function, the optical unit having a holographic element and a lens arranged in the main emission direction in front of the holographic element, the holographic element comprising such a diffraction structure that the light beam emitted from the light source onto the holographic element is varied according to a predetermined illumination pattern such that the holographic light beam lights an illumination surface of the lens to generate the light function.
Type:
Grant
Filed:
December 18, 2015
Date of Patent:
December 7, 2021
Assignees:
Hella KGaA Hueck & Co., Covestro Deutschland AG
Inventors:
Martin Muegge, Carsten Hohmann, Rainer Hagen, Guenther Walze, Thomas Faecke
Abstract: Provided is a process for preparing an organic diisocyanate of the formula: OCN—R—NCO (1), wherein R represents a bivalent hydrocarbon radical containing 3 to 20 carbon atoms, the carbon atoms being arranged in a way that the two nitrogen atoms are separated from each other by at least 3 carbon atoms, the process comprising, Step (I) preparing a diurethane of the formula wherein R is the same as in formula (1), R? and R? independently represent organic radicals selected from the group consisting of 4 to 36 carbon atoms, 4 to 74 hydrogen atoms, 0 to 12 oxygen atoms that have the oxidation state ?2, and 0 to 1 halogen atoms from a diarylurethane of the formula, wherein R is the same as in formula (1), Ar and Ar? independently represent a substituted or unsubstituted aryl or heteroaryl radical selected from the group containing a total of 4 to 20 carbon atoms by transesterification, Step (II) subjecting the diurethane of the formula (2) to a cleavage reaction to form the hydroxy compounds R?—OH and R?—O
Abstract: A composition for producing a thermoplastic moulding material, wherein the composition comprises the following components: A) aromatic polycarbonate or polyestercarbonate, B) rubber-modified vinyl (co)polymer, C) a hydrocarbon resin containing aromatic and aliphatic structural units, D) optionally further additives distinct from component C, wherein, for component C, a ratio of an integrated peak area of an FTIR spectrum in a wavenumber range of 1630 cm-1 to 1560 cm-1 to an integrated peak area of an FTIR spectrum in a wavenumber range of 1520 cm-1 to 1350 cm-1 is in a range from (80-160)·10?3. A process for producing a moulding material, the moulding material itself, a process for producing injection-moulded or thermoformed moulded articles, and moulded articles obtainable from the composition or the moulding material.
Abstract: The invention relates to a process used to produce open-cell and extremely fine-cell PUR/PIR rigid foams, said process using a polyol formulation comprising a specific isocyanate-reactive component, a catalyst component having zerewitinoff-active hydrogens and a cell-opener component.
Type:
Grant
Filed:
March 5, 2018
Date of Patent:
November 9, 2021
Assignee:
Covestro Deutschland AG
Inventors:
Christian Hahn, Reinhard Albers, Ali-Kasim Anwar, Paul Heinz, Michael Baecker, Marcel Schornstein
Abstract: The invention relates to a method for producing aminobenzoic acid or a aminobenzoic acid derivative via the fermentation of a suitable raw material under the influence of suitable microorganisms and obtaining a fermentation broth containing aminobenzoate and/or aminobenzoic acid. In particular, the invention relates to the step of obtaining the aminobenzoic acid from the fermentation broth, wherein the crystallisation of aminobenzoic acid is carried out via a simple one-stage acid treatment in the presence of seed crystals. The aminobenzoic acid crystallised in this simple manner can be easily separated from the mother liquor, further cleaned if necessary, and then supplied to the different applications.
Type:
Grant
Filed:
November 17, 2016
Date of Patent:
November 9, 2021
Assignee:
Covestro Deutschland AG
Inventors:
Gernot Jäger, Wolfgang Beckmann, Amgad Salah Moussa, Guenter Olf, Guido Becker, Hasan Akyildiz, Andreas Damm, Thomas Hamedinger, Wolf Kloeckner, Swantje Behnken