COMPOUNDS WITH ISOCYANATE GROUPS AND MASKED GROUPS REACTIVE IN RELATION TO ISOCYANATES

PCT No. PCT/EP96/05634 Sec. 371 Date Jun. 18, 1998 Sec. 102(e) Date Jun. 18, 1998 PCT Filed Dec. 16, 1996 PCT Pub. No. WO97/23536 PCT Pub. Date Jul. 3, 1997Isocyanato compounds with capped, isocyanate-reactive groups are those of the formula I where R1 and R2 are hydrogen, C1-C10-alkyl, C6-C10-aryl or C7-C10-aralkyl or together form C3-C10-alkanediyl, X and Y are -O-, -S- or where R4 is hydrogen, C1-C20-alkyl which is uninterrupted or interrupted by oxygen atoms in ether function, or is C6-C10-aryl or C7-C10-aralkyl, R3 is C1-C10-alkanediyl which together with -X-CR1R2-Y- forms a 4-7-membered ring, in which either one hydrogen in R3 or the radical R4 in is replaced by an allophanate group RIa in which R5 is a divalent aliphatic, alicyclic, araliphatic or aromatic C2-C20 hydrocarbon unit, R6 is a single bond or a divalent aliphatic, alicyclic, araliphatic or aromatic C1-C20 hydrocarbon unit or a mono- or poly(C2-C4-alkylene oxide) unit, and R7 is a carbamoyl radical or a biuret group RIb in which one R8 is hydrogen and the other is as defined for R7 or a biuret group RIc in which one R9 is as defined for R7 and the other is as defined for R1 or a thioallophanate group RId