| 摘要 |
PURPOSE:The titled adhesive having excellent low-temperature adhesiveness, washing resistance, wash-and-wear properties, drycleaning resistance, flame retardancy, etc., consisting of a specified chlorine-containing copolymer. CONSTITUTION:50-90mol% vinylidene chloride and/or vinyl chloride, 50- 10mol% monomer mixture of (meth)acrylonitrile and an alkyl ester of an (alpha- methyl-substituted) ethylenically unsaturated aliphatic acid (e.g. methyl methacrylate) in a molar ratio of 0.1-10, and 0-10mol% functional monomer copolymerizable with these (e.g. acrylic acid) are made to undergo emulsion polymerization at 20-80 deg.C in an aqueous medium of a pH of 1-6 in the presence of a radial polymerization initiator to give a hot-melt adhesive comprising a chlorine- containing copolymer which contains terminal functional molecule components consisting of a decomposition product of the polymerization initiator, and has a melting or softening point of 50-150 deg.C and a melt viscosity in this range of melting or softening point of 1X10<6>-1X10<3>P. |
