STYROLHARZ, STYROLHARZZUM SUMMARY, DARAUS FORMARTICS AND STYROLHARZMANUFACTURING PROCEDURES

摘要

To provide a styrene resin having a syndiotactic structure, which has a proportion of an endothermic amount obtained in a range of 175 to 260°C of less than 30% based on the total endothermic amount taken as 100%, which are measured at a temperature rise rate of 20°C/min through differential scanning calorimetry, and a styrene resin composition containing 50 to 95% by mass of a thermoplastic resin composition and 5 to 50% by mass of a glass filler, the thermoplastic resin composition containing 100 parts by mass of a thermoplastic resin (SCA) containing 80 to 100% by mass of a styrene resin having a syndiotactic structure and 0 to 20% by mass of a rubbery elastic material, 0.2 to 2.0 parts by mass of at least one kind of an antioxidant (SCB) selected from the group consisting of a phenol-based antioxidant and a sulfur antioxidant, 1.5 to 5.0 parts by mass of at least one kind of a compound (SCC) selected from the group consisting of a polyphenylene ether and a modified polyphenylene ether, and at least one kind selected from the group consisting of a nucleating agent and a release agent.