Yield:-

Reaction Conditions:

with Nafion;phosphoric acid at 95; for 10 h;Conversion of starting material;Pervaporation composite membrane made from polyvinylalcohol and glutaraldehyde;

Steps:

2
Example 2; The same procedure as Example 1 was performed except that 77 g of methacrylic acid, 97 g of 2,2,3,3,3-pentafluoropropanol, 6 g of 95% Nafion and 10.0 g of phosphoric acid were used, and the reaction was conducted at 95° C. for 10 hr. The final reaction mixture was extracted with 5 volumes of n-hexane and water, washed with an equal volume of water and neutralized with 1N aqueous sodium hydroxide solution. The analysis was performed by gas chromatography, showing the conversion rate of 2,2,2-trifluoroethylmethacylate of 98.7%.

References:

KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY US2005/85661, 2005, A1 Location in patent:Page/Page column 4