Polyol Ester Plasticizers and Process of Making the Same

A composition comprising a triglyceride according to the formula

• wherein at least one of the R1, R2, and R3 groups defining the acid moieties in the triglyceride, is independently selected from C4 to C9 alkyl groups, whereby, if at least one of a C4 or a C9 alkyl group is present, this C4 or C9 group is present in a mixture of aliphatic acids, and whereby the mixture of aliphatic acids has an average carbon number of at least 6 and at most 9, with the proviso that the average branching on the alkyl groups of the aliphatic acid moieties is from 0.5 to 3.0, preferably from 0.6 to 2.2, more preferably from 0.7 to 1.8, still more preferably 0.8 to 1.6, and yet still more preferably from 1.2 to 1.4 branches per molecule, and wherein at least 10% of the branches, preferably at least 50% of the branches, and more preferably at least 80% of the branches on the alkyl groups of the aliphatic acid moieties are methyl branches.