Method for producing polyisocyanates

Details Method for producing polyisocyanates Method for producing polyisocyanates

2011-03-01

2011-03-01

Sullivan, Daniel M (Department: 1621)

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

Organic compounds

Isocyanate esters

Reexamination Certificate

active

07897806

ABSTRACT:
The invention relates to a process for preparing polyisocyanates by reacting primary amines with phosgene in the presence of a solvent, wherein ionic liquids are used as solvents.

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U.S. Appl. No. 12/446,460, filed Apr. 21, 2009, Boehling, et al.

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