Abstract
Triesters containing a ether linkage were synthesized and their utilization as plasticizer was examined.
Some monoesters were obtained from 1-chloro-3- (2-hydroxyethoxy) -propanol-2 and potassium hexanoate, octanoate, decanoate, laurate, myristate, palmitate or stearate and then they were acylated with acetyl, benzoyl or n-hexanoyl chloride to yield triesters, including diacetates, dibenzoates and dihexanoates, respectively.
The triesters were evaluated on the plasticizing effect, through comparison of the effects on the properties of polyvinyl chloride (PVC), with those of dioctyl phthalate (DOP). PVC containing diacetates were considerably inferior than the control (containing only DOP) only in heat stability. With dibenzoates, heat stability was appreciably improved, however, low temperature flexibility lowered. On the other hand, PVC containing dihexanoates showed almost the same degree of heat stability as the control did and were superior than the control in low temperature flexibility. The number of carbon atoms contained in the fatty acid molecules used did not appreciably influence the plasticizing effect.
