Basf Se Corporation

Lars Börger

Gabriel Skupin

Robert Loos

Andreas Künkel

Jörg Auffermann

Jerome Lohmann

Xin Yang

Carsten Sinkel

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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Shanghai, China

Lars Börger