Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Stratasys, Inc.

Covestro LLC

Derk Erich Wandner

Thomas Eckel

Ralf Hufen

Pierre Moulinie

Jonas Kuenzel

Sven Hobeika

Marina Rogunova

Ting Liu

Christopher Schirwitz

Ingmar Hermsdorfer

Jonas Künzel

Christopher Schwirwitz

The present invention relates to a method of producing an article, comprising the step of producing the article by means of an additive manufacturing method from a build material comprising an aromatic polycarbonate and interference pigments and/or pearlescent pigments from the group of the metal oxide-coated micas. The invention likewise relates to an article obtainable by the method. The build material further comprises ≥0.05% by weight to ≤3% by weight of anhydride-modified α-olefin polymer.

Additive manufacturing process using a building material that contains metal-oxide coated mica

The invention relates to a thermoplastic composition comprising A) aromatic polycarbonate, B) 0.1 to 5 wt.-% one or more polyether polyol(s) and C) one or more thermal stabilizer(s) selected from the group consisting of thio compounds excluding the following component D, characterized in that the composition additionally comprises D) 3,3'-thiodipropionic acid, wherein the total amount of components C plus D is 0.01 to 1.0 wt.-%. The invention also relates to medical technology products or parts of medical technology products consisting of such compositions as well as to a process for sterilization of such moulded parts by means of irradiation. The polycarbonate compositions according to the invention show significantly less yellowing after irradiation than known compositions.

By means of ionizing radiation sterilizable moulded parts made from polycarbonate

The invention relates to a composition for producing a thermoplastic moulding material, wherein the composition contains the following constituents:

Glass fiber filled thermoplastic composition having good mechanical properties

The invention relates to a thermoplastic composition comprising A) aromatic polycarbonate, B) 0.1 to 5 wt.-% one or more polyether polyols and C) 0.01 to 0.30 wt.-% 3,3'-thiodipropionic acid. The invention also relates to medical technology products or parts of medical technology products consisting of such compositions as well as to a process for sterilization of such moulded parts by means of irradiation. The polycarbonate compositions according to the invention show significantly less yellowing after irradiation than known compositions and still have good mechanical properties.

The invention relates to compositions based on aromatic polycarbonate comprising metal oxide-coated micas as effect pigment, which do not have any significant increase in molecular weight of the polycarbonate, as can be seen from the MVR, under thermal stress. This is achieved by the addition of small amounts of an anhydride-modified &#x3b1;-olefin polymer, optionally in combination with phosphorus-containing thermal stabilizer.

Polycarbonate composition comprising pearlescent pigment and/or interference pigment

Mineral-filled thermoplastic composition having good mechanical properties

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Odenthal, Germany

Derk Erich Wandner