Method for the depolymerization of mixtures that contain...

Details Method for the depolymerization of mixtures that contain... Method for the depolymerization of mixtures that contain...

2011-03-08

2011-03-08

Dentz, Bernard (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07902386

ABSTRACT:
The present invention provides a process for depolymerizing mixtures comprising mono- and/or diesters of polytetrahydrofuran in the presence of an acidic catalyst and of a C1- to C3-alcohol at temperatures of from 80 to 200° C. and a pressure of from 0.05 to 0.5 MPa, where the molar ratio of the C1- to C3-alcohol relative to the carboxyl groups present in the mixture is greater than 1.

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