Propylene glycol (PG) is an important raw material of unsaturated polyester, epoxy resin, polyurethane resin, plasticizer and surfactant, which accounts for about 45% of the total consumption of propylene glycol. This unsaturated polyester is widely used in surface coatings and reinforced plastics.
Propylene glycol (PG) has good viscosity and hygroscopicity, and is widely used as hygroscopicity, antifreeze, lubricant and solvent in food, pharmaceutical and cosmetic industries. In the food industry, 1, 2-propylene glycol and fatty acid reaction to produce propylene glycol fatty acid ester, mainly used as food emulsifier;
