Catalyst and process for the polymerization of cyclic ethers

Details Catalyst and process for the polymerization of cyclic ethers Catalyst and process for the polymerization of cyclic ethers

2011-03-01

2011-03-01

Truong, Duc (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From heterocyclic reactant containing as ring atoms oxygen,...

C528S410000, C528S485000, C528S486000, C528S50200C, C528S503000, C502S080000, C502S081000, C502S086000

Reexamination Certificate

active

07897719

ABSTRACT:
The present invention provides a catalyst comprising a mixture of at least one acid-activated sheet silicate with a transition metal oxide of groups 8 and/or 9 of the Periodic Table of the Elements and also a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers, in which tetrahydrofuran is polymerized in the presence of at least one telogen and/or comonomer over such a catalyst.

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