Abstract: Novel multifunctional unsaturated polyester polyols, UV-curable top coat formulations including these polyols, and a one-step process for preparing these polyols, are disclosed. Surface coverings and surface covering components including these top coat formulations are also disclosed. The polyols are generally formed by the ring opening polymerization of a lactone with a compound of the formula (R1)aR(OH)b, where a+b>2. R1 is a double bond-containing moiety such as allyl, vinyl, vinylidene, vinyl ether, acrylate, and the like. R is generally an alkyl, aryl, aralkyl, alkaryl, ether or ester group, including substituted versions thereof. R can be a polymer, including polymers with a plurality of functional groups. Examples of lactone groups which can be used include caprolactone, lactide and glycolide.

Abstract: Novel multifunctional unsaturated polyester polyols, UV-curable top coat formulations including these polyols, and a one-step process for preparing these polyols, are disclosed. Surface coverings and surface covering components including these top coat formulations are also disclosed. The polyols are generally formed by the ring opening polymerization of a lactone with a compound of the formula (R1)aR(OH)b, where a+b>2. R1 is a double bond-containing moiety such as allyl, vinyl, vinylidene, vinyl ether, acrylate, and the like. R is generally an alkyl, aryl, aralkyl, alkaryl, ether or ester group, including substituted versions thereof. R can be a polymer, including polymers with a plurality of functional groups. Examples of lactone groups which can be used include caprolactone, lactide and glycolide.