Réaction #73695

Équation de réaction

maleic anhydride

p-toluenesulfonic acid

diethanolamine

iodine

→

diphenylmethane diisocyanate

Solvants

diethylene glycol

Conditions de réaction

Traitement

1. 1
   workup.STIRRINGThe mixture was stirred for 23 hours at a temperature between about 210° F. and about 226° F
2. 2
   workup.STIRRINGwith stirring
3. 3
   workup.STIRRINGThe mixture was stirred under vacuum for 8 hours at a temperature between about 210° F. and about 230° F.
4. 4
   Autreto give a liquid soybean oil

Mode opératoire

The above amounts of diethanolamine and iodine were added to the above amount of soybean oil with stirring. The mixture was stirred for 23 hours at a temperature between about 210° F. and about 226° F. Then, the above amounts of maleic anhydride, diethylene glycol, and p-toluenesulfonic acid were added with stirring. The mixture was stirred under vacuum for 8 hours at a temperature between about 210° F. and about 230° F. to give a liquid soybean oil based polyol with a hydroxyl number of 55. 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.

Source