Patent ID: 6448342
Filing Date: 2002-09-10
Classification: C08F

Abstract:
A transparent butadiene-based rubber-reinforced resin produced by graft-polymerizing monomer components (b) comprising as main components an aromatic vinyl compound, a vinyl cyanide compound and an acrylic or methacrylic acid ester in the presence of particles of a butadiene-based rubber (a), said butadiene-based rubber-reinforced resin comprising, when observed by an electron microscope, a rubber phase having an average particle size of 150 to 350 nm and containing particles having a particle size of less than 150 nm in an amount of not more than 30% by weight and particles having a particle size of more than 350 nm in an amount of not more than 30% by weight; and said butadiene-based rubber-reinforced resin containing acetone solubles having an intrinsic viscosity [&eegr;] of 0.2 to 0.4 dl/g when measured at 30Â° C. in methyl ethyl ketone.