Patent ID: 9315665
Filing Date: 2016-04-19
CPC Classification: C08J,C08K,C08L

Claim Text:
1. A method for preparing a resin composition for an expandable polypropylene carbonate, the method comprising: 1) providing components consisting of polypropylene carbonate resin (a1), a thermoplastic resin (a2), a compatibilizer (B), a cross-linking agent, a chain extender, or a mixture thereof (C), an inorganic material (D), and a heat stabilizer (E); 2) cross-linking the polypropylene carbonate resin (a1), the thermoplastic resin (a2), and the cross-linking agent, the chain extender, or the mixture thereof (C) provided in step 1); and 3) mixing the obtained material in step 1), step 2) and the compatibilizer (B), the inorganic material (D), and the heat stabilizer (E) provided in step 1) with one another, wherein the compatibilizer (B) compatibilizes between the polypropylene carbonate resin (a1) and the thermoplastic resin (a2).