| 摘要 |
Curable compositions comprising an epoxide resin and an aliphatic amine curing agent are rendered less viscous, and their rate of cure is accelerated, by the addition of an ester of the formula <IMAGE> I wherein n represents an integer of from 1 to 6, R represents the residue of a mono- or polyhydric alcohol or phenol after removal of n hydroxy groups, and R1, R2, and R3 may be the same or different and each represents a hydrogen or halogen atom or an alkyl group, or one or two of R1, R2, and R3 may alternatively represent an acyloxy group. Typical such esters of formula I include diphenyl carbonate, bis(phenoxycarbonyloxy) polybutadiene, and tris(phenoxycarbonyloxy) poly(oxypropylene). The compositions may be cured at room temperature and are particularly suitable for use as coatings and castings.
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