Sulfonamide anions as catalysts for NCO oligomerization

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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C252S182200, C528S051000, C528S052000, C528S053000, C528S057000, C528S073000, C544S067000, C544S068000, C544S193000, C544S222000, C548S951000, C548S952000

Reexamination Certificate

active

07060817

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.

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