Patent ID: 7541399

Claim:
A process for producing a poly(phenylene ether) resin composition comprising (A) a poly(phenylene ether) and (B) a styrene resin, the styrene resin (B) being a styrene resin which comprises at least a rubber-modified polystyrene containing a polybutadiene having 90% or higher cis-1,4 bonds, the process comprising: a first step of melt-kneading the poly(phenylene ether) (A) and a first styrene resin to thereby obtain a melt-kneading product, wherein the first styrene resin is a styrene resin at least 80% by weight of which is (B1) a rubber-modified polystyrene containing a hydrogenated polybutadiene and/or a styrene homopolymer; and a second step of melt-kneading the melt-kneading product with a second styrene resin, wherein the second styrene resin comprises (B2) a rubber-modified polystyrene containing a polybutadiene having 90% or higher cis-1,4 bonds.