FILLED OR UNFILLED METALLOCENE-CATALYZED POLYOLEFIN-CONTAINING WAX OR POLYMER FORMULATION PARTICULARLY SUITED FOR CUTTING MODEL PRODUCTION PROCESS AND USE THEREOF IN PRECISION CASTING PROCESS AND HOLLOW CORE PRODUCTION IN ESPECIALLY DENTAL, JEWELRY AND PRECISION ENGINEERING CATEGORY

摘要

PROBLEM TO BE SOLVED: To provide a filled or unfilled metallocene-catalyzed polyolefin-containing wax or polymer formulation particularly suited for use in a precision casting process and hollow core production.;SOLUTION: The wax formulation includes the followings: (a) a metallocene-catalyzed polyolefin having a melting point of 80-150°C, a viscosity at 140°C of 60-20,000 mPa s, and a melt flow index (MFI) of 30-3,000 g/10 min as measured under a load of 2.16 kg at a test temperature of 230°C, (b) a wax or a wax derivative having a melting point of 80-165°C and a viscosity at 140°C of 50-30,000 mPa s, and a low-density polyolefin having a melting point of 80-150°C and a melt flow index (MFI) of 30-3,000 g/10 min as measured under a load of 2.16 kg at a test temperature of 230°C. The wax formulation is used in a cutting model production process and hollow core production, particularly in dental, jewelry, and precision engineering categories.;COPYRIGHT: (C)2009,JPO&INPIT