Polypropylene Glycol (PPG 400 to 4000): Lubricants & Antifoam Agents
Polypropylene Glycol (PPG 400 to 4000) is applied as a lubricant and antifoam agent in aqueous and nonaqueous industrial systems. The polymer is manufactured through base-catalyzed ring-opening polymerization of propylene oxide with a difunctional alcohol initiator, yielding linear hydroxyl-terminated polyether chains with a repeat unit of C3H6O. Commercial grades in...
