Prepolymers containing hydroxy-functional hydantoin group precursors and their use in coating compositions.

THE present invention relates to prepolymers hydroxy group-containing UREA and corresponding to the formula, wherein R represents the residue obtained by removing the isocyanate groups of a diisocyanate monomeric ORGANICO, a polyisocyanate adduct or a prepolymer NCO group containing hYDANTOIN or precursors GROUPS hydantoin, R {SUB 1} YR {SUB, 2} may be identical or different and represent organic groups which are inert towards isocyanate groups at a temperature of 100 CO MINOR, R {SUB, 3} YR {SUB, 4} may be identical or different and represent hydrogen or ORGANIC are inert towards the isocyanate groups at a temperature of 100 CO MINOR, R {SUB, 5} REPRESENTS hydrocarbon radical obtained by removing the GROUPS amino and hydroxyl aminoalcohol, n has a value of 1 to 3 m has a value of 2 to 6. The present invention is also directed to compositions suitable for producing coatings, ADHESI VOS O Elastomers containing these prepolymers polyhydantoin polyisocyanates optionally in combination with amino resins or blocked.