Polyols

Properties and Applications

Oligomeric and polymeric polyols are an important group of functional resins which are used in the manufacture of a large number of products.¹ They are typically viscous liquids or waxy solids depending on molecular weight, type of backbone and hydroxyl content. The five most important types of polyols are polyether, polyester, polybutadiene, polycarbonate and polyacrylate polyols. The latter two are used on a much smaller scale because they are more expensive and are typically chosen where superior weathering and/or heat resistance is important. 

Polyols are very important components of polyesters and polyurethanes. As chain extenders, they control to a large extent the mechanical, thermal and physical properties and can reduce the overall cost. For example, oligomeric polyether polyols are known to greatly improve the flexibilty and toughness of polyesters and polyurethanes whereas monomeric polyols, due to their low equivalent weights, produce more rigid polymers.

Polyols are used in a variety of products including elastomers, fibers, flexible foam, adhesives, sealants, inks, paints, and coatings. When used in engineering plastics, they are often copolymerized with other monomers to produce polyurethane and polyester elastomers.

 

Manufacturers & Distributors

Companies AGC Perstorp Others

Brands Carbowax™ Caradol Pluriol®