Patent ID: 8658718

Claim:
A process of producing a molding material which comprises a polymer, a phenolic stabilizer, a hindered amine light stabilizer, and a phosphorus stabilizer, wherein the polymer has a repeating structural unit whose part or whole contains an alicyclic structure, in which the phenolic stabilizer is adhered on surface of pellets comprising a resin composition containing the polymer, the hindered amine light stabilizer and the phosphorus stabilizer, the process comprising: step (a): producing the pellets by pelletizing the resin composition containing the polymer, the hindered amine light stabilizer and the phosphorus stabilizer with use of an extruder, wherein the hindered amine light stabilizer contained in the resin composition is in an amount of 100% by mass of the total amount of the hindered amine light stabilizer included in the molding material; and step (b): adhering the phenolic stabilizer with 100% by mass of the total amount of the phenolic stabilizer included in the molding material on the surface of said pellets after said step (a).