Vinyl polymer grafted polyether polyol is commonly known as "polymer polyol", or POP for short.

Polymer polyol is a polyether based on general-purpose polyether polyol (usually general-purpose soft foam polyether triol, high-activity polyether), plus acrylonitrile, styrene, methyl methacrylate, vinyl acetate, chlorine It is formed by free radical graft polymerization of vinyl monomers such as ethylene and initiators at about 100 degrees under nitrogen protection.

Used to prepare high load-bearing or high modulus soft and semi-rigid polyurethane foam products. Partially or entirely using this organic filled polyether instead of general polyether polyol can produce foam plastics with low density and high load-bearing performance, which not only meets the hardness requirements, but also saves raw materials.