| 摘要 |
<p>Bisimide resins having improved fracture toughness comprises a mixture of, a) a bismide of the general formula (I), in which B represents a divalent radical containing a carbon-carbon double bond and A is a divalent radical containing at least two carbon atoms and, b) a polyisocyanate of the general formula (II): D(NCO)x , in which x has a value of between 2 and 4 and D stands for an x-valent radical. The molar ratio of a:b is in the range 2 to 100. </p> |
