Evonik Degussa Gmbh

Evonik Operations Gmbh

Si-coatings Gmbh

Maximilian Gruhn

Karl Kuhmann

Martin Risthaus

Rainer Goering

Andreas Dowe

Andreas Pawlik

Juergen Franosch

Klaus Welsch

Willi Henkenjohann

Maik Grebe

Kathrin Lehmann

Wolfgang Diekmann

Klaus Hülsmann

Rainer Göring

Michael Beyer

Sven Mang

Olivier Farges

Heinrich Peirick

Sigrid Hessel

Klaus Huelsmann

Luca Castelli

Jun Shi

A device produces three-dimensional objects layer by layer in a powder bed fusion process. The device includes a building space, at least one energy source, a building area with a building space platform and a building space container laterally confining the building space platform. The building space platform has an upper side, facing a powder, and an underside, facing away from the powder. The upper side of the building space platform includes a material with a thermal conductivity of at least 20 W/(m&#xb7;K) and the underside of the building space platform includes a material with a thermal conductivity of a maximum of 0.5 W/(m&#xb7;K). The contact surface of the upper side of the building space platform with respect to the powder or with respect to the cooling medium is raised by at least 20% in comparison with the planar surface of a building space platform.

Device for producing three-dimensional objects layer by layer

The invention provides an adhesion promoter composition comprising at least one polymer A selected from at least one epoxy resin-phenol resin precondensate, a mixture of at least one epoxy resin-phenol resin precondensate and epoxy resins, a mixture of epoxy resins and phenol resins, polyamide resins and mixtures thereof, and at least one copolyamide-based hotmelt adhesive. Additionally described is a primer composition comprising at least one polymer B selected from saturated polyester resins, epoxy-phenol resin precondensates, mixtures of epoxy resins and phenol resins, and mixtures thereof, at least one crosslinker resin selected from the group consisting of melamine resins, blocked isocyanate resins and mixtures thereof, at least one catalyst, and at least one copolyamide-based hotmelt adhesive.

Adhesion promoter compositions and primer compositions for metal-plastic hybrid components

The invention provides a process for producing a hybrid component comprising metal and plastic. The process comprises the steps of a) pretreating the metal surface by applying at least one conversion layer, b) applying at least one layer of an adhesion promoter composition and c) bonding the metal to the plastic. The adhesion promoter composition comprises at least one copolyamide-based hotmelt adhesive.

Process for producing a metal-plastic hybrid component

The invention relates to a polymer composition, and to a semifinished plastics product, the surface of which has been formed at least to some extent from the polymer composition. The invention further relates to a production process associated therewith for the semifinished plastics product. A feature of the polymer composition is that it comprises from 50 to 99.7% by weight of a polymer and from 0.3 to 20% by weight of one or more adhesion-promoting additives. The invention further relates to plastics-metal hybrid components and production of these.

Metal-plastic hybrid component

A composition, containing at least 50% by weight of a polyamide fraction which comprises: a) from 50 to 95 parts by weight of a polyamide having as copolymerized units bis(4-aminocyclohexyl)methane (PACM) and a linear dicarboxylic acid having from 8 to 18 C atoms; and b) from 50 to 5 parts by weight of a linear aliphatic polyamide having an average of from 8 to 12 C atoms in the monomer units, where the sum of the parts by weight of a) and b) is 100 is provided. The composition can be processed to give a moulded article having high transparency, high toughness and high resistance to chemicals, to solvents and to stress cracking.

Polyamide mixture

A flexible pipe of multilayer structure which comprises the following layers, from the inside to the outside: an interior lining; an inner reinforcement layer; a layer of molded electrically conductive plastic; an outer reinforcement layer; and an exterior sheath. The electrically conductive plastic layer is in electrical contact with the two reinforcement layers, and the two reinforcement layers can be connected to a source of electrical current. It is thus possible to achieve efficient heating of the pipe, and it can therefore be used for conveying oil in cold regions.

Temperature-controllable pipe

A flexible pipe which can be heated efficiently, and may therefore be used for conveying oil in cold regions, is provided. The pipe comprises in order from inside to outside: an interior lining; a wound tape; and at least one reinforcement layer. The wound tape contains a first exterior layer of a plastics molding composition that is not electrically conductive; an intermediate layer of an electrically conductive plastics molding composition; and a second exterior layer of a plastics molding composition that is not electrically conductive. A volume resistivity to IEC 60093 of the intermediate layer is in the range from 10to 10&#x3a9;m, and the intermediate layer comprises at least two metallic conductors embedded into the plastic molding composition along an entire length of the tape in such a way that, the two conductors do not touch one another.

Temperature-controllable pipe suitable for offshore applications

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Marl, Germany

Maximilian Gruhn