Method for preparing citrate esters

Details Method for preparing citrate esters Method for preparing citrate esters

1987-09-17

1989-09-26

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

524310, 560185, C07C 67313

Patent

active

048702048

ABSTRACT:
Citrate esters are formed utilizing organic titanates as a catalyst allowing excess alcohol to be removed. Four citrate esters have been found which provide advantageous plasticizing properties to PVC compositions which include superior toxicity test results and superior soapy water extraction test results. The four citrate esters are: acetyltri-n-hexyl citrate, n-butylryltri-n-hexyl citrate, acetyltri-n-(hexyl/octyl/decyl) citrate, and acetyltri-n-(octyl/decyl) citrate. Articles formed from the PVC plasticized mixtures are extremely useful in the medical or health care field as they demonstrate a low order of toxicity.

REFERENCES:
patent: 3025271 (1962-03-01), Borchert
patent: 3056818 (1962-10-01), Werber
patent: 4007218 (1977-02-01), Ghanayem et al.
Citroflex Trade Number for New Candidates, (Jan. 1982).
Citrate Ester Development Products, (Apr. 1982).
Citrate Ester Development Products, (Oct. 1982).
Citrate Ester Development Products, (Dec. 1983).

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