Aromatic polyester polyols for rigid foam applications

摘要

IN many regions of the world Aromatic Polyester Polyols (APPs) play a significant role in the rigid polyurethane / polyisocyanurate(PUR/PIR) foam insulation markets.- Excellent thermal insulation properties- Excellent flame retardant properties- Excellent foam mechanical properties Aromatic polyester polyols can make asignificant contribution to improving the quality and safety of rigid foam insulation in AsiaAPPs are made by reacting a polyhydroxy compounds with aromatic dicarboxylic acid or ester in the presence of various performance additives.Preferred polyhydroxycompound is a glycol chosen based on cost and molecular weight.