Basf Se Corporation

Carsten Buschmann

Karl Haeberle

Frank Schaefer

Guenter Scholz

Maria Teresa Hechavarria Fonseca

Karl Häberle

Maria Thomas

Heinrich Bollmann

Fatemeh Ahmadnian

Markus Bubolz

Lars Rehling

Günter Scholz

Frank SCHÄFER

A process for purifying a polycarbodiimide comprising (a) providing a mixture comprising a polycarbodiimide and a carbodiimidization catalyst; (b) separating carbodiimidization catalyst from the polycarbodiimide by subjecting the mixture according to (a) to a first distillation, (c) adding an entrainer to the first bottom product obtained from (b) to obtain a mixture; (d) further separating carbodiimidization catalyst from the polycarbodiimide by subjecting the mixture obtained from (c) to a second distillation.

Process for the purification of a polycarbodiimide

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Dissen a.T.W., Germany

Carsten Buschmann