Method for producing polyisocyanates

Details Method for producing polyisocyanates Method for producing polyisocyanates

2006-04-18

2006-04-18

Richter, Johann (Department: 1621)

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

Organic compounds

Isocyanate esters

C560S355000

Reexamination Certificate

active

07030266

ABSTRACT:
The invention relates to a method for making oligomeric isocyanates by reacting diisocyanates in the presence of a catalyst, wherein the catalyst comprises a saline compound prepared from a five-membered N-heterocycles and the N-heterocycle comprises at least one N—H function in the five-membered ring, to the products produced in this way and to polymers prepared from these products.

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