PARTING AGENT

摘要

PURPOSE: A parting agent(or releasing agent) is provided which quality of tire can be improved and cost and quantity of pollutant can be reduced by using. CONSTITUTION: The parting agent comprises: i) a system which includes not less than 2kinds of silicon selected from the group consisting of (A) a silicon component which reacts by a condensation reaction such as polydimethylsiloxane and a cross-likable silicon and (B) a silicon component which reacts by addition reaction such as organopolysiloxane and methyl hydrogen polysiloxane; and ii) an aqueous colloid silica sol which contains 15-40 wt. % of silica sol average size of which is 6-50nm.