Polyisobutenyl ethers and thioethers
AssigneeBASF SE
InventorsArno Lange, Helmut Mach, Darijo Mijolovic, Hans Peter Rath
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Abstract
A process for preparing polyisobutenyl (thio)ethers by reacting a polyisobutene epoxide having at least one terminal epoxide group with itself, with other epoxides and/or with nucleophiles selected from among alcohols and thiols in the presence of a Lewis-acid compound as catalyst and/or a cationic photoinitiator with illumination is described. The side reaction of the rearrangement of the epoxide to the polyisobutenyl aldehyde is suppressed. In addition, a curable composition comprising a polyisobutene epoxide, an epoxide different therefrom and optionally a poly(thi)ol is also described.
Claims14
A process for preparing a polyisobutenyl ether or thioether by reacting a polyisobutene epoxide having at least one terminal epoxide group with
- i) itself,
- ii) other epoxides and/or
- iii) nucleophiles selected from the group consisting of alcohols and thiols, in the presence of
- a) a Lewis-acid compound as catalyst and/or
- b) a cationic photoinitiator with illumination.
Dependencies are inferred from the claim text.