Oligomeric plasticizers from crambe oil‐derived dicarboxylic acids for poly(vinyl chloride)

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Abstract
Seventeen oligomeric plasticizers were prepared by polyesterification of long chain dicarboxylic acids with propylene glycol and terminator acid or alcohol. All, except one terminated by dodecyl alcohol, were compatible with poly(vinyl chloride). Films plasticizied with these polyesters were similar in transparency and flexibility to films plasticized with bis(2‐ethylhexyl) phthalate. Poly(vinyl chloride) sheets containing brassylic acid polyesters withof 2200–2300 or a crambe mixed dicarboxylic acids polyester withof 2100 exhibited superior permanence with overall performance comparable to sheets plasticized with bis(2‐ethylhexyl) phthalate commercial polymeric plasticizer.