An unsaturated polyester resin composition

摘要

An unsaturated polyester resin composition which comprises 100 parts by weight of a resin mixture comprising 25 to 80 parts by weight of an unsaturated polyester, 20 to 60 parts by weight of a comonomer and 1 to 10 parts by weight of a particulate crosslinked polymer and 100 to 400 parts by weight of an inorganic filler and in which the difference in refractive index between a product of copolymerization of the unsaturated polyester with the comonomer and the inorganic filler is 0.02 or below; and molded articles produced by curing the resin composition by heating under pressure. The resin composition has a high productivity, exhibits a texture excellent in both light transmittance and gloss, and is excellent in water resistance and which is suitable for the production of artificial marble.