Reaktion #73695

Reaktionsgleichung

maleic anhydride

p-toluenesulfonic acid

diethanolamine

iodine

→

diphenylmethane diisocyanate

Lösungsmittel

diethylene glycol

Reaktionsbedingungen

Aufarbeitung

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
   Sonstigeto give a liquid soybean oil

Vorschrift

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.

Quelle