反应详情

温度

176 fahrenheit

A phenol-free strontium oleate/carbonate containing about 14% strontium was prepared by the following procedure. A mixture of 413 g of oleic acid, 600 g of Shellflex™ 6111 light mineral oil, 300 g of isodecyl alcohol, 40 g of butyl carbitol, and 4 g of triethylene glycol was heated to 176° F., and 1000 g of strontium hydroxide octahydrate was added. The reaction mixture was heated to 275° F. over a 2.5-hour period, while removing 550 g of water via a Dean-Stark trap with the aid of a nitrogen sparge at 2.0 SCFH. After the rate of water removal slowed, the nitrogen sparge was turned off, and carbon dioxide gas was added to the reaction via a subsurface addition tube at a rate of 450 ml/minute, and the water formed was continually removed. After 7 hours of carbon dioxide addition at 250-275° F., the carbon dioxide was turned off, the temperature of the reaction was raised to 300° F. and the remaining water was removed with the assistance of a nitrogen sparge at 2.0 SCFH. The reaction was then filtered hot with suction with the assistance of filter aid, yielding the overbased strontium oleate carbonate as a light yellow, clear mobile liquid. The product was analyzed to contain 14.25% strontium by weight.

1. temperatureThe reaction mixture was heated to 275° F. over a 2.5-hour period
2. customwhile removing 550 g of water via a Dean-Stark trap with the aid of a nitrogen
3. customsparge at 2.0 SCFH
4. customAfter the rate of water removal
5. customthe nitrogen sparge
6. additioncarbon dioxide gas was added to the reaction via a subsurface addition tube at a rate of 450 ml/minute
7. customthe water formed
8. customwas continually removed
9. additionAfter 7 hours of carbon dioxide addition at 250-275° F.
10. temperaturethe temperature of the reaction was raised to 300° F.
11. customthe remaining water was removed with the assistance of a nitrogen
12. customsparge at 2.0 SCFH
13. filtrationThe reaction was then filtered hot with suction with the assistance of filter aid