Basf Se Corporation

Jerome Lohmann

Gabriel Skupin

Robert Loos

Andreas Künkel

Jörg Auffermann

Xin Yang

Norbert Effen

Carsten Sinkel

Lars Börger

Timo Benjamin Witt

Motonori Yamamoto

Peter Gutmann

Maximilian Lehenmeier

Gijsbrecht Jacobus Maria Habraken

Klaus Scheuermann

Martin Bussmann

Bangaru Dharmapuri Sriramulu Sampath

Michael Bernhard Schick

Andreas Kuenkel

Daniel Schilling

Joerg Auffermann

Nora Schlutt

Joerg Kohl

Lars BÖRGER

The present invention relates to a process for producing a (co)polyester, wherein the (co)polyester at least partially consists of 1,4-butylene dicarboxylate units, in a degassing plant, wherein the crude (co)polyester is degassed in the presence of 0.1% to 5% by weight, based on the total weight of the input materials, of an entraining agent at a pressure between 5 to 300 mbar.

Method for preparing a (co)polyester

The present invention relates to a continuous process for purifying an aliphatic-aromatic polyester constructed from aliphatic dicarboxylic acids, aromatic dicarboxylic acids and aliphatic diols in a degassing apparatus, wherein the crude polyester is degassed for 3 to 30 minutes at a pressure of 0.01 to 5 mbar in the presence of 1% to 7% by weight, based on the total weight of the crude polyester, of an entraining agent.

Process for purifying an aliphatic-aromatic polyester

The present invention relates to a process for the preparation of a spinnable composition (sC) by mixing at least one terephthalate polyester (A), at least one aliphatic-aromatic polyester (B), at least one oligomer (C) and optionally at least one additive (D). Moreover, the present invention relates to the spinnable composition (sC) obtained by this process, a process for the preparation of polyester fibers (PF) by extruding the spinnable composition (sC) through at least one spinneret, the polyester fibers (PF) obtained by this process, textile materials (T) comprising the polyester fibers (PF) a process for dying the textile materials (T), and the use of the oligomer (C) for the improvement of the rheology and/or the dyeability of a composition comprising at least one terephthalate polyester (A) and at least one aliphatic aromatic polyester (B).

Spinnable composition (sC), and polyester fibers (PF) made therefrom

The invention relates to a process for the preparation of expandable polylactic-acid-containing pellets, comprising the steps of

Process for producing expandable polylactic acid-containing pellets

The invention relates to a biodegradable polyester mixture comprising:

Biodegradable polyester mixture

Disclosed is a biodegradable polyester mixture comprising 45 to 95 wt %, based on the total weight of polyester I and II, of a polyester I constructed from an aliphatic C-Cdicarboxylic acid or a C-Cdicarboxylic acid derivative; terephthalic acid or a terephthalic acid derivative; a C-Cdiol; an at least trihydric alcohol; and a chain extender. The biodegradable polyester mixture further comprises 5 to 55 wt %, based on the total weight of polyester I and II, of a polyester II constructed from an aliphatic C-Cdicarboxylic acid or a C-Cdicarboxylic acid derivative; terephthalic acid or a terephthalic acid derivative; a C-Cdiol; an at least trihydric alcohol; and a chain extender. The biodegradable polyester mixture further comprises 10 to 25 wt %, based on the total weight, of calcium carbonate; and 3 to 15 wt %, based on the total weight, of talc.

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Landau, Germany

Jerome Lohmann