| 摘要 |
<p>Novel oxazolidinone-modified epoxy resins are prepared by reacting a polyglycidyl ether of a polyhydric compound such as the diglycidyl ether of bisphenol A with cyanuric acid or thiocyanuric acid at a temperature in the range of 130 DEG to 180 DEG C. The oxazolidinone-modified epoxy resins prepared in this manner have a different structure and exhibit greater Izod impact strengths as compared to the oxazolidinone-modified epoxy resins prepared from polyisocyanates and polyglycidyl ethers.</p> |
