POLYPROPYLENE-BASED RESIN COMPOSITION FOR HIGH SPEED INJECTION WITH EXCELLENT DIMENSIONAL STABILITY, HIGH CRYSTALLIZATION TEMPERATURE, AND FAST CRYSTALLIZATION RATE

摘要

PURPOSE: A polypropylene-based resin composition is provided to ensure excellent mechanical strength and heat resistance, and high tacticity, to ensure thinning of a molded product, and to improve injection productivity.;CONSTITUTION: A polypropylene-based resin composition for high speed injection comprises 100.0 parts by weight of a high-rigidity polypropylene resin with an isotatic index of 98% or more, and 0.01~0.3 parts by weight of sodium salt-based nucleating agent. The polypropylene resin is polymerized in the presence of a solid catalyst(A) including dialkoxy magnesium, titanium compound and internal electron donor, alkyl aluminum(B) and external electron donor(C).;COPYRIGHT KIPO 2010