Patent ID: 8110289

Claim:
Grafted polyethylene resin particles, wherein the surface of each of the grafted polyethylene resin particles comprises functional groups having adsorbability bonded through graft polymer chains, wherein the polyethylene resin particles have a weight-average molecular weight of 1,000,000 or more and wherein the particle diameter being 10 μm or more and less than 100 μm, wherein a proportion of a crosslinked layer formed by graft copolymerization is 50% by weight or more but less than 150% by weight based on the weight of polyethylene resin particles as substrate, wherein the crosslinked layer formed by graft polymerization being a copolymer layer formed with styrene and divinylbenzene, a polymer layer formed with glycidyl methacrylate, a copolymer layer of glycidyl methacrylate and acrylonitrile, or a copolymer layer of glycidyl methacrylate and divinylbenzene.