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filingDate 2006-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationDate 2009-05-07-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber JP-2009518483-A
titleOfInvention Improved catalyst and process for the polymerization of cyclic ethers
abstract The subject of the present invention is a catalyst comprising a mixture of at least one acid-activated layered silicate and an oxide of a group 8 and / or group 9 transition metal of the periodic table of elements, And a process for producing polytetrahydrofuran, polytetrahydrofuran-copolymer, diester or monoester of said polymer, characterized in that tetrahydrofuran is polymerized over such a catalyst in the presence of at least one telogen and / or comonomer. .
priorityDate 2005-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date>
type http://data.epo.org/linked-data/def/patent/Publication

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