Evonik Operations Gmbh

Evonik Roehm Gmbh

Roehm Gmbh & Co Kg

Roehm Gmbh Chemische Fabrik

Evonik Rohm Gmbh

Roehm Gmbh

Evonik Degussa Gmbh

Rohm Gmbh

Rohm Gmbh Chemische Fabrik

Röhm Gmbh & Co. Kg

Klaus Hofmann

Heinz Vetter

Peter Kaube

Horst Schmidt

Uwe Numrich

Michael Wicker

Christoph Krohmer

Guenther Dickhaut-Bayer

Achim Neuhaeuser

Björn Lazar

Michael Meier-Kaiser

Thomas Rhein

Matthias Geisler

Thorsten Goldacker

Thomas Arndt

Thomas Pfaff

Bettina Gerharz-kalte

Werner Siol

Klaus Schultes

Klaus Albrecht

Jens-Dieter Fischer

Thomas Suefke

Hans Lorenz

Reiner Mueller

Volker Benz

Peter Denkinger

Stefan Nordhoff

Herbert Groothues

Stefan Bade

Michael Muller

Wilhelm Wopker

Thorsten Brand

Mona Rueppel

Tobias Lewe

Rudolf Blass

Jochen Ackermann

Claude Guenanten

Ulrich Boes

Michael May

Guenther Dickhaut

Ernst Heil

Matthias Koebel

Wim Malfait

Hermann Jaksch

Roger Hugh Emerson

Niko Haberkorn

Christian Moers

Peter Battenhausen

Andreas Spiess

Walter Schellhaas

Lukas Huber

Ernst Mohr

Bernhard Schaefer

Michael Olbrich

Craig Biesiada

Karl Ost

Ana Stojanovic

Maria Nargiello

Stefanie Hauser

Bob Tse-Weng Lin

Nicolas Vogel

Hans Ferkel

Nicolas Marion

Andreas Schubert

Thomas Mohr

Denis Pukrop

Günther Dickhaut

Waldemar Kanzler

Alexander Laschitsch

Norbert Deusch

Barbara Geppart

Bernhard Schafer

Horst Puhler

Achim Neuhäuser

Lim Hendra Irawan

Maren Szallies

Günther Dickhaut-Bayer

Reiner MÜLLER

Gunther Dickhaut-Bayer

Achim Neuhauser

Bjorn Lazar

Bettina Gerharz-Kalte

Markus Rudack

Bettina Werner

The present invention relates to a process for producing a hydrophobized silica aerogel, comprising the following steps: a) preparing a hydrophobized silica gel comprising alkoxy groups; b) drying of the hydrophobized silica gel obtained in step a); c) treatment of the product obtained in step b) with a gas mixture comprising water and a base or an acid. A hydrophobized silica aerogel with a reduced alkoxy group content, suitable for thermal insulation applications, is also provided.

Silica aerogel with increased alkaline stability

The present invention relates to a process for producing an aerogel material based on amorphous silica, comprising the following steps:

Method for producing an aerogel material

The present invention relates to a thermal insulating composition, containing 5 to 60% by weight of a hydrophobized granular material comprising fumed silica and at least one IR-opacifier, and 40 to 95% by weight of an inorganic and/or an organic binder, whereby the hydrophobized granular material has a content of free hydroxyl groups of no greater than 0.12 mmol/g, as determined by the reaction with lithium aluminium hydride.

Thermal insulating composition based on fumed silica granulates, processes for its preparation and uses thereof

Hydrophobized granular material comprising from 30 to 95% by weight of a pyrogenic mixed oxide based on silica and at least one oxide of metal M selected from of Al, Ti and Fe with the content of metal M oxide in the mixed oxide being from 01 to 10% by weight, and from 5 to 70% by weight of at least one IR-opacifier selected from the group consisting of silicon carbide, zirconium dioxide, ilmenites, iron titanates, zirconium silicates, manganese oxides, graphites, carbon blacks and mixtures thereof.

Granular mixed oxide material and thermal insulating composition on its basis

A formulation for the coating of substrates, the formulation including 5 to 70 wt % of hydroxy-functional fluoropolymers, 5 to 70 wt % of polyesters based on dicarboxylic or polycarboxylic acids or derivatives thereof and on aliphatic or cycloaliphatic diols or polyols, the polyester including at least one aliphatic or cycloaliphatic dicarboxylic acid or polycarboxylic acid or derivatives thereof, 2 to 25 wt % of crosslinkers, 0.01 to 2 wt % of crosslinking catalysts, up to 20 wt % of UV absorbers and up to 10 wt % of UV stabilizers.

Surface-finishing on the basis of cross-linkable, saturated polyester resins and fluoropolymers

The present invention relates to the use of epoxy-terminated polydiene having terminal epoxy groups as oxygen scavenger, in particular as constituent in packaging.

Epoxy-terminated polybutadiene as oxygen scavenger

The present invention describes a process for the surface finishing of materials via application of specific polymethacrylate layers. The polymethacrylate layers are composed of blends of at least two (co)polymers of polymethacrylates, and specific 'reactive monomers' are present here in a polymerized mixture which forms the polymethacrylate layer. At the application temperature established, these form a chemical and, where appropriate, also a physical bond to the substrate, and therefore have adhesion-promoting action.

Method for surface hardening substances by application of particularly transparent polymethacrylate layers

The present invention relates to a plastics mixture comprising at least one thermoplastic polyurethane A) and at least one impact-modified poly(meth)acrylate B), where the impact-modified poly(meth)acrylate comprises a hard phase whose glass transition temperature is at least 70&#xb0; C. and a tough phase whose glass transition temperature is at most &#x2212;10&#xb0; C., the average particle size of the tough phase is at most 130 nm, and at least a portion of the tough phase has covalent linkage to the hard phase.

Plastic mixtures comprising thermoplastic polyurethane (TPU) and impact-resistant poly(meth)acrylate

The invention relates to a novel UV-protective and weather-resistant package for surface protecting films for polyvinyl chloride window profiles made of poly(meth)acrylate. Matrix plastics having great molecular weights are used in order to obtain great weather resistance of the surface protecting films.

PMMA film featuring particularly great weather resistance and great UV protection

An impact resistant provided PMMA moulding material according to DE 195 44 563 is process into a surface-hardened film which is highly glossy, essentially free of gel bodies and can be processed in the 'in-mould-film-decoration' method. The melted mass is generated by means of an extruder and fed to the inventive glazing rolls via a flexible lip nozzle, said rolls being configured in order to generate an especially high locking pressure in the roll slit. The smoothing rolls are cambered. The films are used for decorating surfaces of high-value thermoplastic moulded parts.

Process of making a glossy film

The invention relates to a molded body consisting of plastic with a material thickness of at least 150 $g(m)m at any point. Said body contains a polymer mixture of an impact-resistance modified poly(meth)acrylate plastic, a polymethyl methacrylate matrix, elastomer particles contained in said matrix and a fluoropolymer. According to the invention, the fraction of the fluoropolymer in the mixture is between 30 and 95 wt. % and the polymer mixture of the impact-resistance modified poly(meth)acrylate plastic and the fluoropolymer is present in an outer layer with a continuous material thickness of at least 10 $g(m)m. The invention is characterized in that the impact-resistance modified poly(meth)acrylate plastic consists of between 20 and 70 wt. % poly(meth)acrylate matrix and between 30 and 80 wt. % elastomer particles.

Polymer mixture consisting of an impact-resistance modified poly (meth) acrylate and a fluoropolymer

The invention relates to a moulding composition, comprising a) 50 to 99.9% by weight of a matrix composed of a thermoplastic polymer and b) from 0.1 to 50% by weight of a matting agent in the form of a (meth)acrylate copolymer dispersed in the matrix, characterized in that the matting agent is a (meth)acrylate copolymer which has been prepared from the following monomers,

Molding material containing a matting agent

Injection-molding materials comprised of polycarbonate can be processed into optically isotropic films in a chill roll extrusion method. The optically isotropic films for protecting data carriers (CD-ROMS) from becoming scratched, or they are used as supporting materials for the information layer.

Optically isotrophic polycarbonate films and a method for the production thereof

Products based on polymethylmethacrylate (PMMA) so resistant to yellowing and so highly transparent that even the edges of plates produced from this material have a neutral colour, i.e. do not display any yellow tone. This effect is obtained by the admixture of 5 to 50 ppm inorganic, reducing phosphorus compounds after polymerisation. This enables the brightener content to be reduced under 10 ppb, and so the end product may also be used in contact with foodstuffs.

Process for producing polymethylmethacrylate molding materials with a neutral color

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Gross-Zimmern, Germany

Uwe Numrich