STYRENE MODIFIED POLYETHYLENE BASED RESIN PARTICLE, AND PREFOAMED PARTICLE OBTAINED FROM RESIN PARTICLE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide styrene modified polyethylene based resin particles which excel in molding workability even after scattering of a foaming agent of prefoamed particles, and a foam molded body obtained from which has high crack resistance. SOLUTION: These styrene modified polyethylene based resin particles are obtained by saturating and polymerizing 150-300 pts.wt. of a styrenic monomer to 100 pts.wt. of a polyethylene-based resin. The central part of the styrene modified polyethylene-based resin particles forms a continuous gradient structure of the polyethylene-based resin and a polystylene-based resin with 0.3-1.0μm of average layer thickness. The ratio of the polyethylene-based resin with the continuous gradient structure at the central part is 30% or higher. The xylene insoluble gel content of the styrene modified polyethylene based resin prefoamed particles obtained form the styrene modified polyethylene-based resin particles is 10-35 wt.%. COPYRIGHT: (C)2009,JPO&INPIT