Abstract: The invention relates to hybrid materials comprising polymers which envelop nanoscale, superparamagnetic, ferromagnetic, ferrimagnetic or paramagnetic powders, to a process for producing these materials and to their use.
Type:
Application
Filed:
January 17, 2012
Publication date:
May 10, 2012
Applicant:
EVONIK DEGUSSA GmbH
Inventors:
Sebastian ROOS, Gerd Löhden, Jan Hendrik Schattka, Manfred Braum, Markus Pridöhl, Guido Zimmermann, Andreas Hüther
Abstract: A dispersion, comprising 0.1 to 25% by weight hydrophobized silica, 8 to 90 wt % of at least one alcohol selected from the group consisting of ethanol, 1-propanol and 2-propanol, 7 to 89 wt % of water, 0 to 30% by weight solvent immiscible with water, and 0.04 to 5 wt % of at least one carboxyvinyl polymer present in neutralised form, can be applied to a surface using a non-drip application method and, by modifying the surface with hydrophobized silica, imparts water-repelling and self-cleaning properties to the surface.
Type:
Application
Filed:
March 16, 2010
Publication date:
May 10, 2012
Applicant:
Evonik Degussa GmbH
Inventors:
Jörg Peggau, Harald Jakob, Wolfgang Lortz
Abstract: Slurry which contains a) from (50) to (80) % by weight of refractory particles having an average particle size of from (0.5) m to (150) m, b) from (5) to (35) % by weight of aluminium oxide particles having an average particle diameter of less than (300) nm and c) from (5) to (35) % by weight of water and d) a pH of from (5) to (12). Process for producing the slurry using a dispersion, and also the dispersion itself. Process for producing a casting mould, and also the casting mould itself.
Type:
Application
Filed:
March 30, 2010
Publication date:
May 10, 2012
Applicants:
CENTER FOR ABRASIVES & REFRAC R & D C.A.R.R.D GMBH, EVONIK DEGUSSA GmbH
Inventors:
Christoph Tontrup, Wolfgang Lortz, Gabriele Perlet, Erich Schmidt-Kluge, Danilo Frulli
Abstract: Adhesive, comprising silanized, structurally modified, pyrogenically prepared silicas containing on their surface fixed vinyl groups or vinylsilyl groups, with hydrophobic groups, such as trimethylsilyl and/or dimethylsilyl and/or monomethylsilyl, additionally being fixed on the surface.
Type:
Grant
Filed:
May 6, 2008
Date of Patent:
May 8, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Mario Scholz, Juergen Meyer, Juergen Heym, Pia Buckel
Abstract: The invention relates to an electrolyte separator system comprising an ionic liquid, a conductive salt and a ceramic separator, and the use of the electrolyte separator system according to the invention in electrochemical energy storage systems, in particular of lithium metal and lithium ion batteries.
Type:
Grant
Filed:
April 27, 2006
Date of Patent:
May 8, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Michael Holzapfel, Petr Novák, Carsten Jost, Anna Prodi-Schwab, Volker Hennige, Christian Hying
Abstract: A powder which is capable of being used in a layer-by-layer process in which regions of the respective pulverulent layer are selectively melted and, after cooling, are fixed, contains a mixture of diacid-regulated polyamide and diamine-regulated polyamide and/or diacid-regulated copolyamide and diamine-regulated copolyamide.
Type:
Grant
Filed:
October 3, 2005
Date of Patent:
May 8, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Sylvia Monsheimer, Ulrich Simon, Maik Grebe, Franz-Erich Baumann, Wolfgang Christoph, Stefan Altkemper
Abstract: The invention relates to a film composite and the use thereof as a mirror film in solar reflectors in view of the sustainable guarantee of the required reflection of solar radiation (total solar reflection). In particular, the invention relates to the use of cover films on the basis of polymethyl methacrylate (PMMA) in the film composite, having an especially high UV stability, and a high weathering stability. The invention further relates to a UV and weather protection package for said solar mirror film, as utilized in solar reflectors, for improving the optical life span, weathering stability, and for avoiding delamination. The invention further relates to a surface finish with regard to scratch resistance, anti-soil and chemical stability of the solar mirror film.
Type:
Application
Filed:
May 17, 2010
Publication date:
May 3, 2012
Applicant:
Evonik Degussa GmbH
Inventors:
Uwe Numrich, Achim Neuhäuser, Werner Arnold, Michael Olbrich
Abstract: The present invention relates to compositions for producing membranes, the compositions comprising at least 0.1% by weight of highly branched polymer, at least 0.5% by weight of linear polymer and at least 30% by weight of solvent. The present invention additionally describes membranes obtainable from the compositions, and methods of producing these membranes.
Type:
Grant
Filed:
December 17, 2007
Date of Patent:
May 1, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Matthias Seiler, Stefan Bernhardt, Rolf Schneider, Roland Wursche, Franz-Erich Baumann
Abstract: Preparation of cyclododecatriene in a continuous or discontinuous process by trimerization of butadiene in the presence of a catalyst system and a solvent, the crude cyclododecatriene obtained being able to be isolated by means of distillation. The cyclooctadiene formed as by-product can likewise be isolated from the crude product.
Type:
Grant
Filed:
March 20, 2007
Date of Patent:
May 1, 2012
Assignee:
EVONIK DEGUSSA GmbH
Inventors:
Jürgen Herwig, Wilhelm Brügging, Martin Roos, Norbert Wilczok
Abstract: An olefinically unsaturated monomer is stabilized by a retarder-containing composition which comprises a solvent and a quinone methide as a retarder.
Type:
Application
Filed:
January 3, 2012
Publication date:
April 26, 2012
Applicant:
EVONIK DEGUSSA GmbH
Inventors:
Stefanie Weyler, Phillip James, Oliver Erpeldinger, Manfred Neumann, Frank Kraushaar
Abstract: The invention relates to cells and a method for producing acetone.
Type:
Application
Filed:
February 23, 2010
Publication date:
April 26, 2012
Applicant:
Evonik Degussa GmbH
Inventors:
Franz Ulrich Becker, Gerda Grund, Matthias Orschel, Kai Doderer, Gerd Löhden, Gerd Brand, Peter Dürre, Simone Thum, Hubert Johannes Bahl, Ralf-Jörg Fischer, Antje May
Abstract: A description is given of the preparation of high molecular mass, crystalline copolyesters with high solubility in non-halogenated and non-aromatic solvents, and of their use in adhesives.
Type:
Grant
Filed:
January 8, 2008
Date of Patent:
April 24, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Gabriele Brenner, Rene Koschabek, Georg Becker
Abstract: The present invention relates to a process for coating substrates, which comprises the steps: a) provision of a substrate which is not natural stone and/or natural ashlar, b) application of a composition comprising a silane of the general formula (Z1)Si(OR)3, where Z1 is R, OR or Gly (Gly=3-glycidyloxypropyl) and R is an alkyl radical having from 1 to 18 carbon atoms and all radicals R can be identical or different, oxide particles selected from among the oxides of Ti, Si, Zr, Al, Y, Sn, Zn, Ce and mixtures thereof, with bound organic radicals SiR?3 being present on the surface of the oxide particles, where R? has the general formula CnX1+2n where n=1 to 20, X=hydrogen and/or fluorine, all radicals R? can be identical or different and the organic radicals SiR?3 being able to be split off, and an initiator to at least one surface of the substrate and c) drying of the composition applied in step b), and a coated substrate which can be obtained by the abovementioned process.
Abstract: The invention relates to a hydrophobic fumed silica which is obtained by grinding a fumed silica which, as a result of silanization, has trimethylsilyl groups fixed on the surface; and to coating formulations comprising this silica.
Type:
Grant
Filed:
May 6, 2008
Date of Patent:
April 24, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Juergen Meyer, Kurt Spitznagel, Guenther Michael, Tina Gross
Abstract: Separator-electrode assemblies (SEAs) comprise a porous electrode useful as a positive or negative electrode, in a lithium battery and a separator layer applied to this electrode, the separator layer being an inorganic separator layer comprising at least two fractions of metal oxide particles different from each other in their average particle size and/or in the metal, and the electrode having active mass particles are bonded together and to the current collector by inorganic adhesive; and a process for their production.
Type:
Grant
Filed:
September 15, 2009
Date of Patent:
April 24, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Gerhard Hoerpel, Volker Hennige, Christian Hying, Sven Augustin
Abstract: A film whose outer layer is composed of a molding composition which is in essence composed of the following components: a) from 3 to 50% by weight of a polyamide, selected from the group of PA11 and PA12, and b) from 50 to 97% by weight of a polyamide, selected from the group of PA1012 and PA1212, where the percentages are based on the entirety of components a) and b), is suitable for decoration of moldings which retain their gloss during their service time.
Type:
Application
Filed:
December 21, 2011
Publication date:
April 19, 2012
Applicant:
EVONIK DEGUSSA GmbH
Inventors:
Roland WURSCHE, Sonja Bollmann, Harald Häger, Martin Wielpütz, Kirsten Alting, Michael Beyer, Franz-Erich Baumann
Abstract: A molding compound, containing at least 30% by weight of a copolyamide, which is derived from the following monomers: a) 50 to 95 mole percent of the combination of a diamine, selected from the group consisting of 1,9-nonane diamine, 1,10-decane diamine, 1,11-undecane diamine and 1,12-dodecane diamine, and terephthalic acid, and b) 5 to 50 mole percent of the combination of a diamine, selected from the group consisting of 2,2,4-trimethylhexamethylene diamine, 2,4,4-trimethylhexamethylene diamine, and mixtures thereof, and terephthalic acid. The copolyamide is crystalline and has low water absorption.
Type:
Application
Filed:
July 8, 2010
Publication date:
April 19, 2012
Applicant:
EVONIK DEGUSSA GmbH
Inventors:
Andreas Pawlik, Martin Roos, Franz-Erich Baumann, Harald Haeger
Abstract: A chemical compound of the general formula I or II is useful as feed additive: wherein X=O or NR, and R=H, C1-C6-alkyl (optionally branched), C3-C6-cycloalkyl, aryl, or aralkyl, and wherein R1, R2, are identical or different and in each case H, C1-C6-alkyl (optionally branched), C3-C6-cycloalkyl, allyl, aryl, or aralkyl; or R1 and R2 together are an C2- to C6-alkylene group (optionally C1-C6-alkyl substituted).
Type:
Grant
Filed:
December 19, 2008
Date of Patent:
April 17, 2012
Assignee:
Evonik Degussa GmbH
Inventors:
Christoph Kobler, Philipp Roth, Christoph Weckbecker, Klaus Huthmacher