LHS-50 is an inactive polymer polyol modified with a styrene-acrylonitrile (SAN) polymer with a solid content of approx 45% by weight. It effectively combines a high solid content with low viscosity. LHS-50 can also be used for the production of conventional slabstock foams with very high load bearing properties. It is suitable to produce flexible, semi-rigid polyurethane foam especially for slab stock foam, cushion, mattress, furniture and many other applications.