反应详情

The above amounts of diethanolamine and iodine were added to the above amount of soybean oil with stirring. The mixture was stirred for 22 hours at a temperature between about 180° F. and about 225° F. Then, the above amounts of maleic anhydride, toluene and sulfuric acid were added with stirring. The mixture was refluxed for 6 hours using a Dean-Stark distilling trap, then distilled out of solvent to give a liquid soybean oil based polyol with a hydroxyl number of 50. A reaction mixture of about 10.00 grams of the polyol and the above indicated amount of diphenylmethane diisocyanate yielded a solid soybean oil based polyurethane material.

1. stirringThe mixture was stirred for 22 hours at a temperature between about 180° F. and about 225° F
2. stirringwith stirring
3. temperatureThe mixture was refluxed for 6 hours
4. distillationdistilling trap
5. distillationdistilled out of solvent
6. customto give a liquid soybean oil