Catalysts for selective isocyanate dimerization

Details Catalysts for selective isocyanate dimerization Catalysts for selective isocyanate dimerization

2008-01-08

2008-01-08

Cooney, Jr., John M. (Department: 1711)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C252S182200, C540S202000, C544S067000, C544S068000, C544S193000, C544S222000, C548S952000, C528S051000, C528S052000, C528S053000, C528S057000, C528S073000

Reexamination Certificate

active

10910982

ABSTRACT:
A method of dimerizing isocyanates using sulphonamide anions as a dimerization catalyst for the isocyanates and also to a process for preparing oligomeric isocyanates using such catalysts.

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