Basf Aktiengesellschaft

Basf Se Corporation

Kolon Plastics, Inc.

Jürgen Demeter

Jürgen Deininger

Gad Kory

Helmut Winterling

Kurt Krempel

Oliver Sötje

Christian Schade

Philippe Desbois

Christoph Benisch

Hermann Gausepohl

Peter Zehner

Achim Stammer

Thomas Heitz

Axel Wilms

Ralf Schulz

Alain Deffieux

Jens Assmann

Mark Völkel

Lidcay Herrera Taboada

Rainer Anderlik

Ralf Neuhaus

Marie-Claire Hermant

Laurence Pottie

Frank Müller

Steffen Funkhauser

Karthikeyan Sharavanan

Jin-Sang Choi

Rüdiger Häffner

Thilo Hahn

Stephane Menoret

Robert Weiβ

Claus Dallner

Lothar Weller

Michael Prinz

The present invention relates to a method for the production of a colored polyoxymethylene copolymer by mixing a raw polyoxymethylene copolymer in particulate form, comprising 2 to 30% by weight of unreacted residual monomers, with a coloring agent in particulate form, in a degassing apparatus. In addition, the present invention relates to the colored polyoxymethylene copolymer obtainable by the process and the use of the colored polyoxymethylene copolymer for the production of molding parts.

Method for the production of a colored polyoxymethylene copolymer

The invention relates to a process for working up particulate crude polyoxymethylene, which comprises the following steps:

Process for working up particulate crude polyoxymethylene

The invention relates to a polyoxymethylene (POM) powder for use in a selective laser sintering process and having the following parameters:  A process for producing the powder, and also moldings produced from this powder by a selective laser sintering process, are also described.

Polyoxymethylene laser sintering powder, process for its production, and moldings produced from this laser sintering powder

Polyamide containing a compound which bears at least one hydroxy group and has chemical bonding by way of an amide group to the end of the polymer chain, process for preparing this polyamide, and also fibers, films, and moldings, comprising at least one such polyamide.

Polyamides

The present invention relates to coated polyoxymethylene moldings comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide Cor a polyvinyl ester Cor a graft polymer Ccomposed of Cand Cor a mixture of these, and the formaldehyde scavenger D) used comprises at least one imidazolidin-2-one compound.

Coated polyoxymethylenes

A continuous process for producing polyamides, their oligomers or mixtures thereof, if appropriate with further reaction products, comprises reaction of aminonitriles or dinitriles and diamines or mixtures thereof, if appropriate together with further polyamide-forming monomers and/or oligomers, with an aqueous medium composed of aqueous monomer and oligomer extracts obtained from polyamide production by extraction of the polymer with water in a reactor which has a vertical longitudinal axis and through which there is a flow substantially in the longitudinal direction wherein water and/or the aqueous medium are introduced into the reactor at two or more different locations along the vertical longitudinal axis, wherein the aqueous medium is introduced at one or more locations.

Continuous method for the production of polyamides

Polyamide, whose main chain contains a chemically bound amine selected from the group consisting of 2-methyl-1,5-diaminopentane and 1-amino-2-R-cyclopent-1-ene, where R is a functional group capable of combining with an amino group to form an amide group, and processes for preparing such a polyamide and fibers, films and moldings comprising such a polyamide.

Polyamide whose main chain contains a chemically bound N-alkyllactam, and processes for preparing such a polyamide and fibers, films and moldings comprising such a polyamide.

The invention relates to an initiator composition for anionic polymerization, comprising at least one alkali metal hydride selected from LiH, NaH, and KH, and at least one organylaluminum compound, and to a process for the anionic polymerization of styrene monomers or of diene monomers using the initiator composition.

Initiator composition and method for anionic polymerisation

A process for preparing impact-resistant molding compositions by anionic polymerization of vinylaromatic monomers in the presence of a rubber, in a continuous-flow reactor cascade composed of at least two reactors, where the vinylaromatic monomers are fed in substreams to the reactors of the reactor cascade, and an anionic initiator and a rubber are fed at least to the first reactor, and where the reactor cascade is composed of back-mixing reactors.

Method for continuous anionic polymerization of impact-resistant polystyrene

Growing community of inventors

Ludwigshafen, Germany

Jürgen Demeter