| 摘要 |
The elec.-insulating resin with low shrinkage, tack-free surface and cracking resistance is composed of 50-90 wt.% unsatd. polyester oliqomer which was prepd. by polycondensation (until acid value is lower than 40) of glycol or 100-200 mol% hydroxylated-dicyclopentadiene (on the basis of mol of) the glycol and unsatd. dibasic acid or its anhydrate, 50-100 wt.% polymerizable monomer having one more than double bond, and 3-13 wt.% polystyrene(shrinkage inhibitor).
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