| 摘要 |
Interpolymer resin particles comprised of 20% to 80% by weight polyolefin, e.g.polyethylene and 80% to 20% by weight of an in situ polymerized vinyl aromatic resin, e.g. polystyrene or poly(styrene.butyl acrylate) and forming an interpenetrating network of polyolefin and vinyl aromatic resin particles . The interpolymer particles are impregnated with a volatile hydrocarbon blowi ng agent, and limonene, e.g. d-limonene, ranging from about 0.1 to about 5 part s, preferably 0.1 to 1 part by weight, based on 100 parts by weight of the interpolymer particles, for improved expandability and a pleasant fragrance.
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