| 摘要 |
<p>A phase-stable soln. compsn. comprises an isocyanate reactive prepolymer of formula (I) contg. OH and epoxy gps. and a paraffinic polyol chain extender. The compsn. is prepd. by heating (I) in the presence of the polyol at 50-160≰C. In (I), R, R1 and R2 are each alkylene, arylene and alkylene-arylene; X is 1 or 2. The polyol is selected from butanediol, hexanediol, octanediol and ethylene glycol.</p> |
