Abstract
1, 3-Butylene glycol diesters were synthesized and investigated as a plasticizer for PVC.
1) Following four type diesters were prepared : (a) esterified with fatty acid for pri-OH and with benzoic acid for sec-OH, (b) esterified with benzoic acid for pri-OH and with fatty acid for sec-OH, (c) esterified with fatty acid for pri-and sec-OH, (d) esterified with benzoic acid for pri-and sec-
OH (fatty acid : C6C14)
2) Most of diesters showed a good compatibility and gave a elastic sheet except some long chain derivatives of (c) group, and for (c) group it seems that the total carbon number of two acyl groups must be less than 20.
3) Physical properties of prepared PVC sheets showed same or better properties than DOP-sheet. (a), (b) and (c) had favorable characteristic at low temperature (brittling temperature : -20-62°C; DOP : -22°C) and especially some of (c) had good thermal resistance.
