Patent Number: 6,252,039

Title: Method for decoloring tetrahydrofuran polymers or copolymers

Abstract: A process for decolorizing polymers or copolymers which are obtained by cationic polymerization of tetrahydrofuran or of tetrahydrofuran and alkylene oxide, in the presence or absence of a telogen, comprises a) first, if desired, removing the low-boiling components by vacuum distillation or extraction and b) heating the remaining polymer or copolymer in the presence of at least one auxiliary selected from the group consisting of solid oxides and/or sheet silicates to from 20 to C.

Inventors: Becker; Rainer (Bad Durkheim, DE), Eller; Karsten (Ludwigshafen, DE), Hesse; Michael (Worms, DE)

Assignee: BASF Aktiengesellschaft

International Classification: C08G 65/00 (20060101); C08G 65/20 (20060101); C08G 65/30 (20060101); C08F 006/00 (); C08G 065/20 ()

Expiration Date: 06/26/2018