21.
    发明专利
    未知

    公开(公告)号:AT425202T

    公开(公告)日:2009-03-15

    申请号:AT06819860

    申请日:2006-11-30

    Applicant: BASF SE

    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.

Patent Agency Ranking