Evonik Degussa Gmbh

Evonik Operations Gmbh

Evonik Rohm Gmbh

Momentive Specialty Chemicals Inc.

Evonik Industries Ag

Evonik Roehm Gmbh

Stefan Bernhardt

Dirk Poppe

Stephan Wieber

Matthias Seiler

Holger Wiederhold

Markus Pridoehl

Thomas Hasskerl

Ron Postma

Prasad Muppa

Bart Van Den Berg

Hans Rausch

Franz-Erich Baumann

Christian Meier

Sven Balk

Gerd Loehden

Rolf Schneider

Roland Wursche

Friedrich Georg Schmidt

Guenter Schmitt

Günter Schmitt

Florian Hermes

Markus Schwarz

Werner Freitag

Jörg Schallenberg

Jürgen Stock

Juergen Stock

Andrea Fruth

Markus Pridöhl

Ulrike Behrens

Ann-Kristin Klaar

Samuel Von Karsa-Wilberforce

Senada Schaack

Jorg Schallenberg

Gerd Löhden

Hans-Martin Rausch

Gunter Schmitt

Markus Pridohl

Gerd Lohden

Markus PRIDÖHL

Bart B Van Den Berg

The present invention relates to the technical field of 3D printing, in particular in the form of the binder jetting process in which particles in a powder bed are adhesive-bonded by means of a printed adhesive to give a three-dimensional object. The particles here can be inorganic materials, e.g. sand or a metal powder, or polymeric particles, such as polymethacrylates or polyamides. To this end, polymethacrylates can by way of example take the form of suspension polymers known as bead polymers. In this context the present invention in particular relates to, as powders for 3D printing, suspension polymers which differ from the prior art in that they comprise a hard phase and an uncrosslinked soft phase.

Bead polymer made of hard phase with domains of a soft phase

The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particles in a powder bed are bonded by means of a printed adhesive to form a three-dimensional object. The particles may be inorganic particles, for example sand or a metal powder, or polymeric particulate, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers.

Spray-dried soft-phase emulsion polymer for filling the gussets in bead polymer layers in a binder jetting method

The present invention relates to the technical field of 3D printing, especially in the form of the binder jetting method, in which particulate material in a powder bed is bonded by means of a printed adhesive to form a three-dimensional object. The particulate materials may be inorganic materials, for example sand or a metal powder, or particulate polymeric materials, for example polymethacrylates or polyamides. For this purpose, polymethacrylates may take the form, for example, of suspension polymers, called bead polymers. The present invention relates to the use of porous particles in the binder jetting process, in particular of porous suspension polymers. These powders for 3-D printing differ from the prior art in that the porosity results in a faster and better absorption of the printed binder by the powder particles. A great advantage of this procedure is additionally that a product with less warpage is formed and that the end product has a better surface appearance.

Production and use of porous bead polymers in 3D printing using the binder jetting method

The present invention relates to a novel process for the production of coated filaments for subsequent application as print in extrusion-based 3D printers, e.g. FDM printers (fused deposition modelling printers). The filaments are coated in a separate process outside of the printer, and can also be used in a conventional extrusion printer. The present invention further relates to the coating device for application of the coating to the filament and to a roll containing the coated filaments.

Use and production of coated filaments for extrusion-based 3D printing processes

Apparatus and processes are provided for forming epoxide compounds. In one embodiment, a process for the manufacture of an epoxide is provided including adding an oxidant, a water-soluble manganese complex and a terminal olefin to form a multiphasic reaction mixture, reacting the terminal olefin with the oxidant in the multiphasic reaction mixture having at least one organic phase in the presence of the water-soluble manganese complex, separating the reaction mixture into the at least one organic phase and an aqueous phase, and reusing at least part of the aqueous phase. The invention is also related to a device for performing the above process.

Process for the manufacture of a 1,2-epoxide and a device for carrying out said process

The invention relates to a novel support material for the fused deposition modelling process for producing three-dimensional objects. The invention relates more particularly to a 3D printing process involving support materials which are easier to remove than in the prior art. The support materials according to the invention are styrene-maleic anhydride copolymers for example.

Maleic anhydride copolymers as soluble support material for fused deposition modelling (FDM) printer

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.

Gas separation membranes

The invention relates to a deicing or anti-icing agent containing, based in each case on its total weight, from 35.0% by weight to 95.0% by weight of at least one glycol, from 0.001% by weight to 5.0% by weight of at least one dendritic polymer and from 0.01% by weight to 5.0% by weight of at least one further thickener and optionally water. It furthermore relates to the use of from 0.001 to 5.0% by weight of at least one dendritic polymer and from 0.01% by weight to 5.0% by weight of at least one further thickener for thickening a composition which contains from 35.0% by weight to 95.0% by weight of at least one glycol and optionally water.

Deicing agent and/or anti-icing agent

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Offenbach, Germany

Stefan Bernhardt