Patent ID: 8865806

Claim:
A method of plasticizing a plastic, comprising: adding a plasticizer to the plastic, wherein the plasticizer comprises a molecule having at least one associative group comprising a dinitrogenous or trinitrogenous heterocycle, wherein the associative group is selected from the group consisting of imidazolidinyl, bis-ureyl, and ureido-pyrimidyl groups; wherein said plasticizer is obtained by reacting, with a precursor molecule, an associative group selected from the group consisting of formula (1), (2), and (3): wherein: R comprises a group of formula T-(G) n -, wherein T is a reactive functional group capable of forming a covalent bond with the precursor molecule, n has a value of 0 or 1, and G is a linear or branched C 1 -C 24 alkylene chain optionally interrupted by one or more nitrogen atoms; R′ is a hydrogen atom, and A is chosen from an oxygen or sulfur atom wherein the precursor molecule does not comprise a polymer.