| 摘要 |
PURPOSE:To obtain a composition excellently being subjected to interfacial bonding to a parent material face of container cap liner by blending a hydrogenated styrene-based copolymer with a polypropylene-based resin, a liquid paraffin and a specific grafted polypropylene-based resin. CONSTITUTION:(A) 5-90wt.% hydrogenated styrene-butadiene block copolymer having <=20g/10 minutes, preferably <=10g/10 minutes melt flow rate (at 230 deg.C under 2.16kgf hereinafter similarly) is blended with (B) 2-50wt.% polypropylene- based resin having 0.1-50g/10 minutes, preferably 1-30g/10 minutes melt flow, (C) 5-70wt.% liquid paraffin having 50-350 centistoke, preferably 100-350 centistokes viscosity (at 37.8 deg.C) and (D) 0.01-50wt.% polypropylene-based resin grafted with an unsaturated carboxylic acid (derivative). The prepared composition is used for a liner of container cap. |
