Neynaber Chemie Gmbh

Cognis Deutschland Gmbh & Co. Kg

Norddeutsche Affinerie Aktiengesellschaft

Emery Oleochemicals Gmbh

Amril Ag

Norddeutsche Affinerie Akitiengesellschaft

Plansee Se

Element 22 Gmbh

Manfred Jaeckel

Peter Daute

Kurt Worschech

Juergen Waldmann

Peter Wedl

Manfred Petzold

Rudi Heyden

Frido Loeffelholz

Michael Eckelt

Erwin Fleischer

Gebhard Zobl

Georg Kunschert

Hartmuth Smigilski

Johannes Geronimo Schaper

The present invention relates to a filament suitable to be used in a 3D printing device, wherein the filament comprises a metal and/or ceramic powder, a thermoplastic binder and additives. The invention also relates to a process for producing a shaped body comprising the step of printing a shaped green body using the filament according to the invention. Also provided is the use of a filament according to the invention in a 3D printing device and a green body producible by mixing a metal and/or ceramic powder and a thermoplastic binder. The invention also relates to the use of a binder of the invention for the production of a filament for 3D printing devices.

Sinterable feedstock for use in 3D printing devices

A process for freezing a plastic molding machine involving: (a) providing a freezable compound containing: (i) from 20 to 45% by weight of at least one homopolymer or copolymer selected from the group consisting of an ester of methacrylic acid with a monohydric alcohol having from 1 to 4 carbon atoms, a graft polymer of an ester of methacrylic acid with a monohydric alcohol having from 1 to 4 carbon atoms, an ethylene/vinyl acetate copolymer, a graft copolymer of an ethylene/vinyl acetate copolymer, and mixtures thereof; (ii) from 45 to 75% by weight of chalk having a particle size of from 2 to 150 microns; and (iii) from 0.01 to 10% by weight of at least one freezing agent selected from the group consisting of a lubricant having a volatility of less than 0.2% by weight, a release agent having a volatility of less than 0.2% by weight, and mixtures thereof; and (b) charging the plastic molding machine with the freezable compound prior to turning of the plastic molding machine.

Freezing materials

Stabilizers for chlorine-containing olefin polymers containing Ca complexes of 1,3-diketones, hydrocarbon waxes and esters and/or partial esters of saturated, straight-chain C.sub.12 -C.sub.34 monocarboxylic acids, in conjunction with zinc salts of saturated, straight-chain C.sub.8 -C.sub.22 monocarboxylic acids and esters of phosphorous acid, provide the polymers with excellent properties in regard to processibility and temperature stability.

Stabilizer for chlorine-containing olefin polymers, a process for its

Metallic or ceramic hollow spheres are produced by applying a solid layer to a substantially spherical particle of foamed polymer and the coated polymer cores are pyrolyzed with formation of vapor. In order to permit an economical production of the hollow spheres and a wide selection from a wide range of metallic or ceramic materials, the particles consisting of foamed polymer are treated in a state of agitation with an aqueous suspension which contains dissolved or suspended binder and metallic and/or ceramic powder particles, whereby a coating is formed on said polymer particles. The coating is dried, the polymer particles and least part of the binder are subsequently pyrolyzed at temperatures from 400.degree. to 500.degree. C. with formation of vapor while they are agitated and the resulting metallic and/or ceramic hollow spheres are sintered at temperatures from 1000.degree. to 1500.degree. C. while they are agitated.

Process for producing metallic or ceramic hollow-sphere bodies

A process is described in which hollow spheres or hollow-sphere composites (moldings) having high-strength walls are produced. Additional layers are applied to metallized spherical lightweight particles having a core of foamed polymer. In order to increase the strength of the wall of the spherical particle and the strength of the molding, metallized lightweight spherical particles having a metal wall thickness of 5 to 20 microns are treated (coated) with a dispersion of particulate metal or metal oxide or particulate ceramic or refractory material, the lightweight spherical particles coated in a thickness from 15 to 500 microns are dried, the dried particles are heated to a temperature of about 400.degree. C. to effect a pyrolysis of the polymer core, and the particles are subsequently sintered at a temperature from 900.degree. to 1400.degree. C.

Process for producing hollow spherical particles and sponge-like

A substituted melamine additive being a mixture of the formula ##STR1## wherein the six R substituents represent the following: (a) 0 to 3 are hydrogen;

Substituted melamine additives useful in molding compositions based on

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Loxstedt, Germany

Manfred Jaeckel