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US 2006/0142543 A1Published application
Method for the polymerization of cyclic ethers
AssigneeBASF SE
InventorsStephan Schlitter, Martin Haubner, Peter Zehner, Michael Hesse, Alexander Weck, Rolf Pinkos, Thomas Grabler
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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.
Claims19
A process for preparing polytetrahydrofuran, polytetrahydrofuran copolymer, diester or monoester comprising polymerizing tetrahydrofuran in the presence of:
- (i) at least one telogen and/or comonomer and (ii) of an acidic heterogeneous catalyst based on activated sheet silicates or mixed metal oxides in a fluidized bed.
Dependencies are inferred from the claim text.