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US 2005/0033005 A1Published application
Sulfonamide anions as catalysts for NCO oligomerization
AssigneeBayer MaterialScience AG
InventorsJurgen Kocher, Reinhard Halpaap
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Abstract
The present invention relates to the use of sulphonamide salts as catalysts for oligomerizing isocyanates and also to a process for NCO oligomerization using the catalysts of the invention.
Claims10
A method of oligomerizing isocyanates comprising reacting one or more isocyanate containing compounds in the presence of sulphonamide salts according to formula (I)
- where
- R1, R2 independently of one another are identical or different aliphatic, cycloaliphatic, aromatic or araliphatic radicals which are optionally branched, substituted and/or heteroatom-contained and
- Ion(+) is an organic or inorganic cation.
Dependencies are inferred from the claim text.