MOLD RELEASE AGENT FOR DIE CASTING

摘要

A mold release agent for die casting, where the mold release agent comprises a silicone compound having kinetic viscosity of 3,000 to 8,000 mm2/s at 25 °C and expressed by the following formula (1): A-R2SiO-(R2SiO)x-(RR1SiO)y-(RR2SiO)z-SiR2-A (1) (wherein, R is each independently a monovalent hydrocarbon group having from 1 to 5 carbons or phenyl group; R1 is an alkyl group or an alkenyl group having from 6 to 20 carbons, R2 is an aralkyl group having from 7 to 20 carbons, A is R, R1, or R2; x, y, and z are arbitrary numbers; value of x/(x+y+z)= 0.350 to 0.700; value of y/(x+y+z)= 0.150 to 0.325; and value of z/(x+y+z)= 0.150 to 0.325). The mold release agent has excellent mold releasability at a high temperature.