Abstract: Composite particles comprising core particles completely or partially coated with a precipitated polymer, where the d50 median diameter of the core particles is 1 ?m or greater and the ratio of the d50 median diameter of the composite particles to the d50 median diameter of the core particles is 1.15 or greater, are provided. A method to prepare the particles includes dissolution of a polymer in a solvent and reprecipitation of the polymer in the presence of a suspension of the core particles. Further provided is a layer by layer moulding process employing the composite particles and mouldings obtained therefrom.
Abstract: The present invention, relates, to a process, for producing structured coatings, in which a coating composition comprising at least one inorganic binder, at least one oxide pigment which, after addition of a mixture consisting of 15 ml of 1 M oxalic acid and 15 ml of 20% aqueous hydrochloric acid based on 1 g of substance, under standard conditions, leads to a temperature rise of at least 4° C., and at least one solvent is applied to a substrate, the resulting coating composition film is partially coated with a photoresist and the substrate coated with the coating composition and the photoresist is treated with an acid, to the structured layers obtainable by the process and to the use thereof.
Type:
Grant
Filed:
September 1, 2015
Date of Patent:
November 19, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Ralf Anselmann, Christian Brinkmoeller, Arne Hoppe, Sonja Merkulov, Gerhard Renner
Abstract: This invention discloses the use of sulfite salts as catalysts to make polyurethane polymers. In particular, this invention discloses the use of metal salts such as alkali metal salts as well as alkyl ammonium salts such as tetralkyl ammonium salts as catalysts to make polyurethane polymers. The sulfite salts are useful to make a wide variety of polyurethane polymers and polyurethane foam polymer products such as flexible polyurethane foam polymers, rigid foam polyurethane polymers, semi-rigid polyurethane polymer, microcellular polyurethane polymer, and spray foam polyurethane polymer as well as any polymeric material that requires the assistance of catalysts to promote the formation of urethane and urea bonds such as those found in polyurethane emusions for paints, coatings, protective coatings, lacquer, etc as well as other polyurethane or polyurethane containing materials such as thermoplastic polymers, thermoplastic polyurethane polymers, elastomers, adhesives, sealants, etc.
Abstract: A method is useful for the biocatalytic synthesis of proteinogenic L-amino acids, such as L-alanine, L-valine. L-methionine. L-leucine, L-isoleucine or L-phenylalanine from a respective aldehyde and carbon dioxide. In particular, the method is useful for the biocatalytic synthesis of L-methionine from 3-methylthio-propanal (“methional”) and carbon dioxide.
Abstract: Disclosed are processes, products, and compositions having tetraalkylguanidine salt of aromatic acid. The processes include providing a pre-mix comprising an aromatic carboxylic acid component and contacting a tetraalkylguanidine with the aromatic carboxylic acid component in the pre-mix to form the tetraalkylguanidine salt of aromatic carboxylic acid or producing a catalyst composition by contacting the tetraalkylguanidine with the aromatic carboxylic acid component to form the tetraalkylguanidine salt of aromatic carboxylic acid. The compositions include the tetraalkylguanidine salt of aromatic carboxylic acid. The product is formed by the tetraalkylguanidine salt of aromatic carboxylic acid.
Type:
Grant
Filed:
September 12, 2017
Date of Patent:
November 5, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Juan Jesus Burdeniuc, Matti Sakari Huhtasaari
Abstract: A multilayer composite containing the following layers: 1. a first layer (layer I) of a moulding compound containing at least 40 wt. % of the following components: 1) 60 to 99 parts by wt. of a copolyamide based on hexamethylenediamine, terephthalic acid and an aliphatic dicarboxylic acid having 8 to 19 carbon atoms and 2) 40 to 1 parts by wt. of an olefinic copolymer as impact modifier, wherein the parts by wt. of 1) and 2) sum to 100; and II. a second layer (layer II) of a moulding compound containing at least 60 wt. % of a mixture of the following components: 1) 75 to 100 parts by wt. of a partly aromatic copolyamide and 2) 25 to 0 parts by wt. of an olefinic copolymer as impact modifier with the proviso that in the moulding compound of layer II the mixture of components 1) and 2) comprises at least 5 fewer parts by wt, of olefinic copolymer than in the moulding compound of layer I, has a high heat distortion temperature, a very good impact resistance, a high elongation at break and good layer adhesion.
Type:
Grant
Filed:
March 17, 2016
Date of Patent:
November 5, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Jasmin Berger, Rainer Goering, Karl Kuhmann
Abstract: A composition contains at least one siloxane having ethylenically unsaturated, radically-polymerizable groups, and at least one hydrocarbon having 2 to 6 ethylenically-unsaturated, radically-polymerizable groups, and can be used as a release coating, said composition allowing a good degree of release behavior from adhesive compounds while at the same time also achieving a high level of adhesion of the coating to the carrier material.
Abstract: A process can prepare a 3-glycidyloxypropylalkoxysilane of formula (I), (R?)O—(CH2)3—Si(OR)3 (I), where R groups are independently a methyl or ethyl group and R? represents an H2C(O)CHCH2— group. The process includes reacting (i) a functionalized alkene of formula (II), (R?)O—C3H5 (II), where R? represents an H2C(O)CHCH2— group, with (ii) at least one hydroalkoxysilane of formula (III), HSi(OR)3 (III), where R groups are independently a methyl or ethyl group. The reacting takes place in the presence of (iii) a Karstedt catalyst or a catalyst having hexachloroplatinic acid as a homogeneous catalyst, and (iv) 2-ethylhexanoic acid, isononanoic acid, or both. The process further includes obtaining a product of the reacting.
Type:
Grant
Filed:
August 8, 2018
Date of Patent:
November 5, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Markus Rudek, Susann Witzsche, Stefan Bade, Claudia Drescher, Burkhard John, Torsten Peterle
Abstract: The present invention relates to epoxy curing agents which are obtained from the reaction of a polyalkylene polyether modified polyepoxide resin and a polyamine component. They polyamine component is a reaction product of a polyethylene polyamine having 3 to 10 nitrogen atoms, for example, diethylenetriamine (DETA), and at least one aldehyde having 1 to 8 carbon atoms, for example, formaldehyde. The epoxy curing agent may be used as part of a two component coating system in the curing of liquid or pre-dispersed curable epoxy resins.
Type:
Grant
Filed:
May 16, 2017
Date of Patent:
November 5, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Shiying Zheng, Sudhir Ananthachar, Robert Rasing, Nergiz Bozok, Shafiq Fazel, Michael Oberlander
Abstract: A novel 2-component system and a process using the system produce semifinished component products that are stable in storage, in particular sheet moulding compounds (SMC) and mouldings produced therefrom (composite components). The process has five stages, including three different reactive steps which lead to successively increasing hardness levels. The 2-component system is applied to fibre material, e.g. carbon fibres, glass fibres or polymer fibres, or the 2-component system is brought into contact with short fibres, whereupon a first reaction takes place. This is followed by thermal polymerization initiated by redox initiation or with the aid of radiation or of plasma applications. Polymerization produces thermoplastics or, respectively, thermoplastic prepregs, which can then subsequently be moulded. Polyols present can finally be crosslinked, via elevated temperature, with uretdiones already present in the system.
Type:
Application
Filed:
April 17, 2019
Publication date:
October 31, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
Zuhal Tuncay, Holger Loesch, Christina Cron, Elke Gollan, Lisa-Maria Elmer
Abstract: A heat exchanger system can be used for removal or introduction of heat from or into a chemical reactor in which a chemical reaction is proceeding. The system further provides an apparatus for controlling the temperature of a reactor and a process for performing a chemical reaction, in each case using a heat exchanger system with a thermally insulated inner tube.
Type:
Application
Filed:
April 18, 2019
Publication date:
October 31, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
Jan WILLAERT, Martina Ludwig, Frank Geilen, Johannes Knossalla, Thomas Quell, Robert Franke
Abstract: The invention relates to copolymers comprising or consisting of, preferably consisting of three components: component a) having at least one biuret or isocyanurate substructure, component b) selected from polysiloxanes and polyhydrocarbons, preferably polysiloxanes, component c) comprising a hydrocarbon which is different from component b) and has at least 6 carbon atoms and not more than 3 heteroatoms selected from the group of N, 0, S, where component b) is joined to 2 different or identical components a) via at least two positions; and to the preparation and use thereof for finishing of fabrics.
Type:
Application
Filed:
February 2, 2018
Publication date:
October 31, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
Sadik Amajjahe, Gabriele Platte, Kai Oliver Wirz, Jörg Peggau, Sarah Radloff, Kathrin Stremmer
Abstract: The present invention relates to the use of nitrogenous compounds of formula (I) and/or corresponding quaternized and/or protonated compounds for production of polyurethanes, to compositions comprising said compounds and also to polyurethane systems, in particular polyurethane foams, obtained using said compounds.
Type:
Grant
Filed:
July 10, 2015
Date of Patent:
October 29, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Thomas Günther, Michael Fiedel, Martin Glos, Roland Hubel
Abstract: The present invention relates to formulations comprising at least one hydridosilane of the generic formula SinH2n+2 with n=3-6 and at least one hydridosilane oligomer, to processes for preparation thereof and to the use thereof.
Type:
Grant
Filed:
June 12, 2014
Date of Patent:
October 29, 2019
Assignee:
EVONIK DEGUSSA GMBH
Inventors:
Paul Henrich Woebkenberg, Matthias Patz, Stephan Traut, Jutta Hessing, Miriam Deborah Malsch
Abstract: The present invention relates to a process for producing a particulate composition containing methionine, methionylmethionine, potassium in the form of potassium salt and ammonium sulphate, and use thereof.
Type:
Application
Filed:
June 27, 2017
Publication date:
October 24, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
Martin KOERFER, Hans Joachim HASSELBACH, Gerit NIGGEMANN, Antje HANSMEIER, Hans Christian ALT, Dominik EGLY, Peter SCHULTE
Abstract: An isocyanate reactive composition for making a polyurethane foam includes a tertiary amine urethane catalyst comprising a di(C1-C4)alkyl fatty alkyl amine and a polyester polyol. The use of one or more of fatty alkyl tertiary amine serves to reduce hydrolysis of the polyester polyol in the isocyanate reactive composition.
Type:
Grant
Filed:
June 13, 2018
Date of Patent:
October 22, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Gary Dale Andrew, Juan Jesus Burdeniuc, Goran Zarkov
Abstract: The invention relates to a process for preparing an ?,?-alkanediol comprising the steps of a) reacting an alkanoic acid with an alkanol to give an ester, b) oxidizing at least one terminal carbon atom of the ester by contacting with a whole-cell catalyst, which expresses an alkane hydroxylase, in aqueous solution and in the presence of molecular oxygen, to give an oxidized ester, c) hydrogenating the oxidized ester to form the alkanediol and alkanol, and d) removing the alkanol by distillation, forming a reaction mixture depleted with respect to the alkanol, and recycling the alkanol in step b).
Type:
Grant
Filed:
January 10, 2014
Date of Patent:
October 22, 2019
Assignee:
Evonik Degussa GmbH
Inventors:
Thomas Haas, Philip Engel, Jan Christoph Pfeffer, Oliver Thum, Christian Gehring
Abstract: The invention relates to polybutadiene, which contains the monomer units derived from 1,3-butadiene having a vinyl double bond in a proportion of 25 to 75 mole percent, having a trans-double bond in a proportion of 0 to 10 mole percent and a cis-double bond in a proportion of 25 to 75 mole percent, wherein the totality of the monomer units (A), (B) and (C) is supplemented to 100 mole percent, and which is characterized in that it has a number-average mole mass of 1,000 to 3,000 g/mole. The invention further relates to a method for producing polybutadienes, the use of the polybutadiene according to the invention and compositions containing polybutadiene according to the invention.
Type:
Application
Filed:
January 16, 2018
Publication date:
October 17, 2019
Applicant:
Evonik Degussa GmbH
Inventors:
Kai-Steffen Krannig, Jürgen Herwig, Andreas Berlineanu, Miriam Ammer, Philip Kemper, Alexander Pschantka, Yvonne Groß-Onnebrink, Gudula Beuers, Margit Bukohl, Kirsten Luce, Siegfried Jittenmeier
Abstract: Crosslinkers based on alkoxysilanes and alkoxysilane mixtures containing an isocyanate group can be used as a starting component in the production of coating compositions or as paint binder component, or can be used with adhesive o sealant binders o binder components having g ups reactive toward alkoxysilane groups.