Method for producing citrates by esterification in the presence

Details Method for producing citrates by esterification in the presence Method for producing citrates by esterification in the presence

1990-04-06

1991-10-08

Dees, Jose G.

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

Organic compounds

Carboxylic acid esters

524309, 524310, 560185, 560204, C07C 6708

Patent

active

050556096

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 tests results. The four citrate esters are: acetyltri-n-hexyl citrate, n-butyryltri-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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