Hydroxy-functional polyhydantoin prepolymers and their use...

C - Chemistry – Metallurgy – 07 – D

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C07D 233/78 (2006.01) C08G 18/10 (2006.01) C08G 18/38 (2006.01) C08G 18/80 (2006.01) C08G 73/06 (2006.01)

Patent

CA 2172579

The present invention relates to hydroxy-functional polyhydantoin prepolymers corresponding to the formula Image (I) wherein R represents the residue obtained by removing the isocyanate groups from an organic monomeric diisocyanate, a polyisocyanate adduct or an NCO prepolymer containing hydantoin groups, R2 represents an organic group which is inert towards isocyanate groups at a temperature of 100°C or less, R3 and R4 may be identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100°C or less, R5 represents the hydrocarbon radical obtained by removing the amino and hydroxyl groups from an amino alcohol, n has a value of 1 to 3 and m has a value of 2 to 6. The present invention is also directed to compositions suitable for the production of coatings, adhesives or elastomers containing these polyhydantoin prepolymers in combination with optionally blocked polyisocyanates or aminoplast resins.

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