Invention Grant
- Patent Title: Catalyst, its preparation and the polymerization of cyclic ethers over this catalyst
- Patent Title (中): 催化剂，其制备和在该催化剂上聚合环醚
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Application No.: US11971931Application Date: 2008-01-10
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Publication No.: US07456249B2Publication Date: 2008-11-25
- Inventor: Stephan Schlitter , Martin Haubner , Michael Hesse , Stefan Kaeshammer , Rolf Pinkos , Christoph Sigwart
- Applicant: Stephan Schlitter , Martin Haubner , Michael Hesse , Stefan Kaeshammer , Rolf Pinkos , Christoph Sigwart
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Connolly Bove Lodge & Hutz LLP
- Priority: DE10245198 20020927
- Main IPC: C08G59/68
- IPC: C08G59/68 ; C08G65/26 ; B01J21/16 ; B01J35/00
Abstract:
The present invention relates to a solid, acid catalyst for the preparation of polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers by polymerization of tetrahydrofuran in the presence of at least one telogen and/or comonomer, which has a BET surface area of at least 160 m2/g and an acid center density of at least 0.05 mmol/g for pKa values of from 1 to 6, to a process for preparing it and to a process for the polymerization of cyclic ethers over this catalyst.
Public/Granted literature
- US20080108786A1 CATALYST, ITS PREPARATION AND THE POLYMERIZATION OF CYCLIC ETHERS OVER THIS CATALYST Public/Granted day:2008-05-08
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