FLUX CREEPING-UP PREVENTIVE COMPOSITION FOR SOLDER, ELECTRONIC MEMBER FOR SOLDER COATED WITH THE COMPOSITION, METHOD FOR SOLDERING THE MEMBER, AND ELECTRICAL APPLIANCE

摘要

Disclosed is a flux creeping-up preventive composition for a solder that has flux creeping-up preventive properties comparable with those of a conventional flux creeping-up preventive agent comprising a polymer containing a polyfluoroalkyl group having 8 or more carbon atoms, wherein an influence on a living body and an environment can be significantly reduced. The flux creeping-up preventive composition comprises a polymer comprising at least one type of an (meth)acrylate polymerization unit (A) containing a perfluoroalkyl group having 6 or less carbon atoms and at least one type of a polymerization unit (B) derived from a hydroxyl group-containing unsaturated compound. The polymer has a weight average molecular weight (in terms of polymethyl methacrylate) of not less than 150000.