Rubber-modified styrenic resin composition

A rubber-modified styrenic resin composition comprising a matrix of styrenic-acrylic based copolymer and butadienic rubber particles dispersed in said matrix, said styrenic-acrylic based copolymer being prepared from an acrylonitrile monomer and/or a methacrylate monomer, a styrenic monomer and, optionally, other copolymerizable monomers, the rubber-modified styrenic resin composition further comprising residual styrene monomer and residual 4-vinyl cyclohexene, said residual styrene monomer being present in said composition in an amount below 1500 ppm and said residual 4-vinyl cyclohexene being present in said composition in an amount below 150 ppm,

• the number average particle size of the butadienic rubber particles being 0.08 to 0.35 .mu.m, the butadienic rubber particles being distributed such that the amount of the butadienic rubber particles having a particle size of below 0.1 .mu.m is 19.5 to 99%, the amount of the butadienic rubber particles having a particle size of between 0.1 to 0.25 .mu.m is 0.5 to 60%, and the amount of the butadienic rubber particles having a particle size of greater than 0.25 .mu.m is 0.5 to 80% based on the total number of the butadienic rubber particles, wherein the number average particle size of the butadienic rubber particles in the resin composition and the amounts of the residual styrene monomer and the residual 4-vinyl cyclohexane in the resin composition are limited so as to minimize unpleasant odor in said composition.