Propylene Glycol is a water-white sticky-thick hydrophilic liquid, with the stable character. Propylene glycol is an important raw material for unsaturated polyester, epoxy resin, and polyurethane resin. The amount in this area accounts for about 45% of the total consumption of propylene glycol. This unsaturated polyester is used in large quantities for surface coatings and reinforced plastics.
