Chemical recycling technologies uses heat, chemical reactions, or both to recycle used plastic into virgin-equivalent plastic by conversion, decomposition and purification. Conversion is a process of converting long chain polymer to monomers using Pyrolysis: The thermal degradation of plastic waste at high temperature (300-900°C) in the absence of oxygen to produce liquid oils. Decomposition breaks down polymers in sorted plastics into monomers to produce new plastics using heat, chemicals or enzymes to break down polymers at temperatures as low as room temperature, resulting in less energy consumption. Purification uses solvents to separate polymers from additives or contaminants.