In a preferred embodiment, R1 is a bio-based group selected from the group consisting of bio-based alkyl, bio-based cycloalkyl, bio-based cycloalkylene alkyl, and bio-based cycloalkylene dialkyl groups having from two to ten carbons, and R1 is a bio-based or petroleum based alkyl group of the formula ???(CH2)m???, wherein m is an integer from two to four, or R1 is a bio-based or petroleum based cy