Biuret polyisocyanates

Details Biuret polyisocyanates Biuret polyisocyanates

1976-08-23

1977-12-13

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260453AB, C07C119042

Patent

active

040628337

ABSTRACT:
The biuret polyisocyanates correspond to the formula ##STR1## wherein R is --CH.sub.2 CH.sub.2 --O--CH.sub.2 CH.sub.2 -- and X is hydrogen or --C(O)--NX--R--NCO, and they have not more than six isocyanato groups per molecule. These compounds are prepared by reacting bis(2-isocyanatoethyl)ether with water in a mole ratio of at least 3 moles of diisocyanate per mole of water. The biuret polyisocyanates are particularly useful in the preparation of polyurethanes.

REFERENCES:
patent: 3903127 (1975-09-01), Wagner et al.

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