| 摘要 |
PROBLEM TO BE SOLVED: To obtain a coating material which can be applied all the year around and is excellent in stain resistance and in the retention of an aggregate, glass beads, etc., by mixing a polystyrene-polyisoprene block copolymer and/or a polystyrene-polybutadiene block copolymer and a PS resin with a binder resin, a pigment, a filler, large-particle-size glass beads, a hard aggregate, etc. SOLUTION: 5-500 pts.wt. PS resin (pref. a low-mol.-wt. PS resin, still pref. one selected from among a styrene polymer, anα-methylstyrene polymer, anα-methylstyrene-vinyltoluene copolymer and a styrene-acrylic copolymer) is mixed based on 100 pts.wt. polystyrene-polyisoprene block copolymer and/or polystyrene-polybutadiene block copolymer. Since the tensile strength is increased by the PS resin, the power of retaining glass beads, etc., is increased, and thus, glass beads, etc., are prevented from scattering and the visibility of road marking in the rain at night can be well maintained for a long term.
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