Method for the polymerization of cyclic ethers

Details Method for the polymerization of cyclic ethers Method for the polymerization of cyclic ethers

2003-12-23

2009-06-09

Eashoo, Mark (Department: 1796)

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

Synthetic resins

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

C528S403000, C528S425000, C528S410000, C528S411000, C528S417000, C526S069000, C502S254000, C502S309000, C568S617000

Reexamination Certificate

active

07544766

ABSTRACT:
The present invention relates to a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymer, diester or monoester by polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer and of an acidic heterogeneous catalyst based on activated sheet silicates or mixed metal oxides in a fluidized bed.

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Tonsil Optimum FF Technical Data Sheets, Sud-Chemie, Munich, copyright 2007.

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