摘要:
Novel oxazolidinone modified triglycidyl ethers of trihydroxy triphenyl methane and derivatives thereof are prepared which are useful in molding and adhesive compositions.
摘要:
Oxazolidinones are prepared by reacting an organic isocyanate such as toluene diisocyanate with a vicinal epoxide such as the diglycidyl ether of p,p''-isopropylidine diphenol in the presence of a phosphonium catalyst such as tetrabutyl phosphonium bromide. The oxazolidinone compounds prepared herein are known to be useful as chemical intermediates and in the manufacture of resins and plastics.
摘要:
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* to 180* 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.