RECYCLING METHOD OF CAR PART MADE OF POLYPROPYLENE AND COATING UTILIZING POLYPROPYLENE WASTE MATERIAL AND ITS MANUFACTURING METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a recycling method of car parts made of polypropylene capable of utilizing the car parts made of polypropylene as a coating component. PSOLUTION: This recycling method comprises process A where the car parts made of polypropylene and having become a waste are coarsely pulverized to a not greater than 10 mm average diameter, process B where the coarsely pulverized polypropylene is finely pulverized to a not greater than 300 m average diameter by a freeze crushing method, process C where the finely pulverized polypropylene is dissolved in an aliphatic solvent or an aromatic solvent, process D where the dissolved solution is filtered to extract a polypropylene filtrate, and process E where the polypropylene filtrate is mixed with a base resin of this coating. PCOPYRIGHT: (C)2006,JPO&NCIPI