9,9 (10,10)‐Bis(acetoxymethyl)octadecanoate Esters as Plasticizers for Poly(vinyl chloride)

Four alkyl 9,9(10,10)‐bis(acetoxymethyl)octadecanoates were evaluated as plasticizers for poly(vinyl chloride). They were all compatible and imparted properties generally equal or superior to those obtained with a dioctyl phthalate (DOP) control. Permanence properties were also generally equal or superior to those reported for analogous acetoxy and acetoxymethyl plasticizers. Volatility was half that for DOP. On heating, the experimental samples remained flexible to failure, whereas the control samples with DOP became stiff and rigid. Acetone acetals of alkyl 9,9(10,10)‐bis(hydroxymethyl)octadecanoates were incompatible with poly(vinyl chloride).