| 摘要 |
Compounds with isocyanate groups and masked groups reactive in relation to isocyanates, of the formula (I), in which R1, R2, R3, X and Y have the following meaning: R1, R2 are hydrogen, C1- to C10-alkyl, C6- to C10-aryl, C7to C10-aralkyl or R1 and R2 form together C3- to C10-alkane diyl; X, Y are -O-, -S-, (a), in which R4 is hydrogen, a C1- to C20-alkyl group which is optionally interrupted by oxygen atoms in the ether function, a C6 to C10-aryl group or a C7- to C10-aralkyl group; R3 is a C1- to C10-alkane diyl group which forms a 4 to 7-membered ring along with the unit -X-CR1R2-Y-, in which either in the unit R3 one of the hydrogen atoms or in the unit (b), the radical R4 is replaced by an allophanate group (RIa), in which R5 is a divalent, aliphatic, alicyclic, araliphatic or aromatic C2- to C20-hydrocarbon unit, and R6 is a simple bond or a divalent, aliphatic, alicyclic, araliphatic or aromatic C1- to C20-hydrocarbon unit or a mono or poly- (C2- to C4-alkylene oxide) unit, and R7 is a carbamoyl (c) radical or a biuret group (RIb), in which one of the radicals R8 is hydrogen and the other radical has the same meaning as R7, or a biuret group (RIc) in which one of the radicals R9 has the same meaning as R7 and the other has the same meaning as R1, or a thioallophanate group (RId).
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