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US 7,094,933 B2Granted
Method for producing tetrahydrofurane copolymers
AssigneeBASF SE
InventorsMartin Haubner, Rolf Pinkos, Alexander Weck
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Abstract
The present invention provides a process for one-stage preparation of polyoxyalkylene glycols by copolymerizing tetrahydrofuran and alpha,omega-diols in the presence of a heteropolyacid and of a hydrocarbon, which comprises distilling water in a mixture with this hydrocarbon out of the copolymerization.
Claims20
A process for one-stage preparation of polyoxyalkylene glycols by copolymerizing tetrahydrofuran and alpha, omega-diols in the presence of a heteropolyacid and of a hydrocarbon, which comprises distilling water in a mixture with this hydrocarbon out of the copolymerization.
Dependencies are inferred from the claim text.