| 摘要 |
<p>Compounds of formula (I) wherein Q denotes a n-valent residue of an aliphatic polyol having a weight average molecular weight mw of 100 to 25000, n is an integer from 2 to 512, R1 is hydrogen or methyl, A denotes a m-valent aliphatic, cycloaliphatic, aromatic or araliphatic radical, m is an integer from 2 to 4, and Y is a radical of formula (II) or (III) wherein E is a k-valent aliphatic, cycloaliphatic, aromatic or araliphatic radical and k is an integer from 2 to 4, can be used as curing agents for epoxy resins and yields products of high fracture and impact toughness.</p> |
