Patent ID: 9421605
Filing Date: 2016-08-23
CPC Classification: B22C

Claim Text:
1. A water-soluble mold release agent for being applied on a mold surface of a metal mold, consisting of: water; silicon emulsion; a reducing agent chosen from citric acid, tartaric acid, a salt thereof, and a combination of two or more thereof; and a ligand being a bidentate ligand or a multidentate ligand, wherein an undiluted total concentration of the reducing agent and the ligand is not more a maximum concentration at which the mold release agent is stably emulsified by a surface active agent, and when diluted and applied on the mold surface, a diluted total concentration of the reducing agent and the ligand is not less than 0.01 wt % based on the total weight of the mold release agent, and wherein a weight ratio of the reducing agent and the ligand ranges from 95:5 to 60:40.