| 摘要 |
Hydroxy functional urethane compounds comprising the reaction product of a hydroxy functional urethane intermediate with a compound having at least 2 isocyanate groups, wherein the intermediate is represented by the formula:whereinR1 and R2=hydrogen, alkyl, cycloalkyl or a residue R6-O- or R6-CO-O- with R6;R6=an alkyl, cycloalkyl or benzylic group having up to 18 carbon atoms;R4 and R5=hydrogen or alkyl group containing eventually a hydroxyl group; andR3=alkyl, cycloalkyl or benzylic group eventually containing an ether linkage and/or a hydroxyl group, or HO-CH(R1)-CH(R2)-;and is prepared by reaction of a cyclic 5-ring carbonate with a beta-hydroxy functional, secondary amine. The hydroxy functional urethanes are useful in paints and coatings, particularly for automotive applications.
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