There are many types of release agents. Generally, different types of release agents are selected according to the types of products being processed. Common release agents are waxes, silicones, metal stearates, polyvinyl alcohol, fluorinated oligomers and polyolefins, etc., and they are also combined with plant derivatives and fatty acids. Patented blends of polydimethylsiloxane and other complex polymer blends. Injection molding generally uses aerosol silicone release agents because the lubricity of silicone or silicone polymer compositions is unmatched by any other type of release agent.