CATALYST, METHOD FOR PRODUCING THE SAME AND METHOD FOR THE POLYMERISATION OF CYCLIC ETHERS ON SAID CATALYST

摘要

The invention relates to a solid, acid catalyst for the production of polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of said polymers by the polymerisation of tetrahydrofuran in the presence of at least one telogen and/or comonomer. Said catalyst has a BET surface area of at least 160 m2/g and an acid site density of at least 0.05 mmol/g for pKs values of between 1 and 6. The invention also relates to a method for producing the catalyst and to a method for the polymerisation of cyclic ethers on said catalyst.