Process for the production of polyisocyanates containing urea an

Details Process for the production of polyisocyanates containing urea an Process for the production of polyisocyanates containing urea an

1986-04-24

1987-10-27

Kight, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 59, 528 67, 521 99, 521159, 521160, 521901, 521902, C08G 1810, C08G 1832, C08J 900

Patent

active

047031000

ABSTRACT:
The present invention is directed to a process for the production of urea- and/or biuret-modified polyisocyanates by reacting organic polyisocyanates with a mixture of high molecular weight isocyanate-reactive compounds and low molecular weight isocyanate-reactive compounds, wherein at least 25% of the isocyanate-reactive groups are primary amino groups. The present invention is further directed to the products obtained by this process and their use for the production of polyisocyanate polyaddition products, especially for the preparation of molded articles by the RIM process.

REFERENCES:
patent: 4474901 (1984-10-01), Dominguez
patent: 4513133 (1985-04-01), Dominguez
patent: 4530941 (1985-07-01), Turner et al.
patent: 4581386 (1986-04-01), Taylor et al.
patent: 4582887 (1986-04-01), Dominguez et al.
patent: 4618706 (1986-10-01), Scholl et al.

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