| 摘要 |
Compounds with two organic residues linked by an amide, urethane, thiourethane or urea group, terminated with an isocyanate group at one end of the molecule and hydrogen atom(s) or free functional group(s) at the other. Compounds of formula OCN-R<1>-NHCOX-R<2>-(Y)n (1); R<1>, R<2> = optionally unsaturated, linear or branched 1-20C alkylene, optionally unsaturated 3-20C cycloalkylene, 3-20C arylene (all optionally substituted), 4-20C arylene-alkylene, a heterocyclic group or any linear or branched sequence of two or more of these groups, optionally linked by ether, thioether, ester, amine or amide structures; X = covalent bond to R<2>, or O, S or NR<3>; R<3> = H, or the above alkyl, cycloalkyl, aryl or heterocyclic groups (or a sequence as above); Y = H or a free functional group; n = 1-20. Independent claims are also included for: (a) a method for the production of (1) by reacting a di-isocyanate of formula OCN-R<1>-NCO (2)with a compound of formula HX-R<2>-(Y)n (3) (in which X may also be the group -OCO-); (b) a method for the functionalization or modification of compounds or surfaces with at least one isocyanate-reactive group by reaction with compounds (1). |
