Patent ID: 8202450

Claim:
A flame-retardant thermoplastic resin composition comprising: at least a plant-derived resin (A) consisting of a polylactic acid resin and a flame retardant (B), wherein, when the percentage by mass of the plant-derived resin (A) is W 1 and the percentage by mass of the flame retardant (B), is X 1 , the weight proportion of the individual components in total of the flame-retardant thermoplastic resin composition are: 30<W 1 <40, 44.5<X 1 ,<70; wherein 90% by mass or more of the flame retardant (B) comprises aluminum hydroxide containing sodium oxide in an amount of more than 0.0% by mass to 0.2% by mass or less; and wherein the average molecular weight of the polylactic acid is at least 30000.