Polyisobutenyl ethers and thioethers

Details Polyisobutenyl ethers and thioethers Polyisobutenyl ethers and thioethers

2005-10-25

2005-10-25

Richter, Johann (Department: 1621)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From heterocyclic reactant containing as ring atoms oxygen,...

C408S212000, C408S212000, C408S212000, C408S212000, C408S212000, C525S113000, C525S182000, C525S194000, C525S333700, C525S423000, C525S424000, C525S179000

Reexamination Certificate

active

06958382

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.

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