硬脂酸十八醇脂

反应条件: temp:180.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A 2-liter round-bottom flask was charged with 142 g (0.5 mole) of rubber-maker's technical grade stearic acid, 203 g (0.75 mole) of 1-octadecanol, 11 g of p-toluenesulfonic acid and 200 ml of mixed xylenes. Rubber-maker's technical grade stearic acid typically contains approximately 56 percent by weight stearic acid, 29 percent by weight palmitic acid, 8 percent by weight oleic acid and 7 percent by weight other fatty acids. The flask was fitted with a Dean-Stark trap for water removal, a heating mantel and a thermocouple. The system was flushed with nitrogen and heated to a pot temperature of 180° C. for about 1 hour, wherein 12 ml of water were removed. Volatiles were removed under 29 inches of vacuum at 110° C. to give 342 g of a waxy solid melting at 47-55° C. and giving an infrared spectrum showing loss of hydroxyl absorption bands and formation of ester carbonyl functions. The system was flushed with nitrogen wherein 12 ml of water were removed Volatiles were removed under 29 inches of vacuum at 110° C.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 71.1 grams (0.25 mole) of purified stearic acid (melting point 70° C.) and 101.5 grams (0.375 mole) of 1-octadecanol were added to 5.5 grams of toluenesulfonic acid in 100 ml of m-xylene and charged into a Dean-Stark equipped 1-liter round bottom flask. After 4 hours of reflux under nitrogen at a pot temperature of 180° C., 6 ml of water was collected. The solvent and any excess alcohol were stripped under 29 inches of mercury vacuum at 130° C. to give 151 grams of a solid having a melting point of 58° C. The acid number of the product was 3.0. Infrared spectroscopic analysis showed formation of the ester function. charged into a Dean-Stark equipped 1-liter round bottom flask was collected were stripped under 29 inches of mercury vacuum at 130° C.

反应条件: temp:180.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A 2-liter round-bottom flask was charged with 142 g (0.5 mole) of rubber-maker's technical grade stearic acid, 203 g (0.75 mole) of 1-octadecanol, 11 g of p-toluenesulfonic acid and 200 ml of mixed xylenes. Rubber-maker's technical grade stearic acid typically contains approximately 56 percent by weight stearic acid, 29 percent by weight palmitic acid, 8 percent by weight oleic acid and 7 percent by weight other fatty acids. The flask was fitted with a Dean-Stark trap for water removal, a heating mantel and a thermocouple. The system was flushed with nitrogen and heated to a pot temperature of 180° C. for about 1 hour, wherein 12 ml of water were removed. Volatiles were removed under 29 inches of vacuum at 110° C. to give 342 g of a waxy solid melting at 47-55° C. and giving an infrared spectrum showing loss of hydroxyl absorption bands and formation of ester carbonyl functions. The system was flushed with nitrogen wherein 12 ml of water were removed Volatiles were removed under 29 inches of vacuum at 110° C.