Basf Se Corporation

Maximilian Lehenmeier

Bernhard Rieger

Motonori Yamamoto

Gabriel Skupin

Peter Deglmann

Simon Kniesel

Hendrik Wagner

Jerome Lohmann

Rainer Klenz

Norbert Effen

Martin Bussmann

Johannes Klaus Sprafke

Michael Bernhard Schick

Timo Benjamin Witt

Anna Katharina Brym

Erik Gubbels

Stephan Klaus

Rainer Naef

Thomas Hohenstein

Christian Schweiger

Sebastian Ebli

Heike Hoelscher

Simon Alexander GRÜNER

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 invention relates to a continuous process for producing an aliphatic polyester constructed from aliphatic dicarboxylic acids and aliphatic diols comprising the steps of a) esterification, b) polycondensation and optionally c) chain extension, characterized in that during step b) in which the polycondenser functions as a degassing apparatus (B) and/or b') after the polycondensation in an additional degassing apparatus (B&#x2032;) the crude polyester is degassed 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 water, introduced into the gas space of the degassing apparatus B and/or B&#x2032; as an entraining agent.

Continuous method for producing an aliphatic polyester

The present invention relates to an injection molded article comprising:

Injection-molded article containing surface-modified silicates

The present invention relates to a continuous process for purifying a chain-extended aliphatic polyester constructed from aliphatic 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.

Method for purifying an aliphatic polyester

The present invention relates to an item produced by thermoforming, comprising:

Articles produced by thermoforming

A macrocycle based on &#x3b2;-diketimines, a process for preparing the inventive macrocycle, an uncharged macrocyclic dimetallic complex based on the inventive macrocycle, and a process for preparing the uncharged macrocyclic dimetallic complex, the use of the uncharged macrocyclic dimetallic complex as a polymerization catalyst in the polymerization of carbon dioxide with one or more epoxides, a process for preparing polycarbonates by reacting carbon dioxide with one or more epoxides in the presence of the inventive uncharged macrocyclic dimetallic complex, and a polycarbonate prepared by the process according to the invention.

[object Object]

Growing community of inventors

Ludwigshafen, Germany

Maximilian Lehenmeier