Method for producing a polyisobutene
AssigneeBASF SE
InventorsHans Peter Rath, Helmut Mach, Thomas Wettling
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Abstract
The invention relates to a process for preparing polyisobutene having a mean molecular weight Mn of from 400 to 50 000, in particular from 500 to 10 000, by polymerizing isobutene in the presence of a BF3-containing complex catalyst, wherein the polymerization is carried out at least temporarily in the presence of one or more cyclic ethers.
Claims20
A process for preparing polyisobutene having a number-average molecular weight Mn of from 400 to 50 000 by polymerizing isobutene in the presence of a BF3-containing complex catalyst, comprising boron trifluoride and at least one cocatalyst selected from the group consisting of oxygen-containing compounds with OH groups, acyclic ethers, ketones, aldehydes and anhydrides of carbon acids, wherein the polymerization is carried out at least temporarily in the presence of a cyclic ether.
Dependencies are inferred from the claim text.