A compatible blend containing an epoxy-modified block copolymer, a process, a thermoplastic resin composition, resin compositions and an asphalt composition containing an epoxy-modified block copolymer

摘要

Disclosed is a compatible blend which comprises (a) a resin having an affinity to an aromatic vinyl polymer, (b) a resin having reactivity to an epoxy group and (c) a compatibilizing agent comprising an epoxy-modified aromatic vinyl-conjugated diene block copolymer in which (i) a polymer block consisting of an aromatic vinyl compound and (ii) a polymer block consisting of a compound having a conjugated double bond are included, wherein remaining double bonds are partially or completely epoxidized. The compatible blend exhibits small particle sizes dispersion in a scanning electron microscopic structure observation and an excellent homogeneity in outer appearance, resulting in exhibiting an improved flow property together with improved mechanical properties such as impact strength, compared to a compatible blend having a conventional compatibilizing agent which is an aromatic-conjugated diene block copolymer or an aromatic vinyl-conjugated diene block copolymer having epoxy groups at terminals. Furthermore, the present invention relates to various resin compositions which comprise various resins and a modifier or stabilizer which is an epoxy-modified aromatic vinyl-conjugated diene block copolymer.