Patent ID: 7038095
Filing Date: 2006-05-02
Classification: C07C

Abstract:
1. A method for producing a mixture of fluoroalkyl iodide telomers by telomerization, each of which telomers is represented by the formula (I): wherein R f represents a fluoroalkyl group whose number of carbon atoms is in the range of 1 to 10 and n is an integer representing a polymerization degree, with the polymerization degree n equal to or more than k that is an integer of 3 or more, which comprises the steps of: (1) obtaining a first reaction mixture containing a mixture of fluoroalkyl iodide telomers represented by the formula (I) with the polymerization degree n of 1 or more by reacting tetrafluoroethylene with a fluoroalkyl iodide represented by the formula: R (2) separating the first reaction mixture into: (3) obtaining a second reaction mixture including a mixture of fluoroalkyl iodide telomers each of which is represented by the formula (I) with the polymerization degree n equal to or more than k, by reacting the second fraction with tetrafluoroethylene in a second reactor.