Patent ID: 9212110
Filing Date: 2015-12-15
Classification: B01J,C07C,C08F

Abstract:
1. A method for producing a mixture of fluoroalkyl iodides represented by formula (I): wherein R by telomerization in metal catalyst-containing reactors, the method comprising: (1) step 1 of reacting a fluoroalkyl iodide represented by formula (II): wherein R with tetrafluoroethylene in the presence of a metal catalyst in a first reactor to obtain a first reaction mixture containing a mixture of fluoroalkyl iodides represented by formula (I) wherein the degree of polymerization n is 1 or more; (2) step 2 of separating the first reaction mixture withdrawn from the first reactor into a first fraction containing a fluoroalkyl iodide or a mixture of fluoroalkyl iodides represented by formula (I) wherein the degree of polymerization n is (m−2) or less, a fluoroalkyl iodide represented by formula (II), and tetrafluoroethylene, a second fraction containing a fluoroalkyl iodide represented by formula (I) wherein the degree of polymerization n is (m−1), and a third fraction containing a mixture of fluoroalkyl iodides represented by formula (I) wherein the degree of polymerization n is m or more; and (3) step 3 of transferring the second fraction into a second reactor in which a metal catalyst is present and reacting the second fraction with tetrafluoroethylene in the second reactor to obtain a second reaction mixture containing a mixture of fluoroalkyl iodides represented by formula (I) wherein the degree of polymerization n is m or more.