HALOGEN GROUP SOLVENT AND SOLUTION USING SAID SOLVENT AND PROCESS FOR PRODUCING THREE-DIMENSIONAL FIBER

摘要

A halogen group solvent comprising a mixed solventconsisting essentially of bromochloromethane and/or 1,2-dichloroethylene and a co-solvent, wherein the co-solventis at least one member selected from the group consistingof carbon dioxide, sulfur hexafluoride,difluorochloromethane, 1,1,1,2-tetrafluoroethane, etc.,and the content of said co-solvent in the mixed solventis 3 to 65 % by weight; a polyolefin solution using thesolvent; and a process for producing a three-dimensionalfiber of a polyolefin using the solution.