Esterification process

Details Esterification process Esterification process

1976-09-17

1981-05-05

Myers, Jane S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528272, 528285, 528296, 528298, 528307, 528308, 528271, 560 84, 560 85, 560 86, 560 89, 560127, 560193, 560194, 560198, C07C 6724, C07C 6982, C08G 6342

Patent

active

042660467

ABSTRACT:
Cyclic carbonate esters are reacted with polycarboxylic acids to produce bis(hydroxyalkyl) esters from aromatic polycarboxylic acids in the presence of selected catalysts comprising at least one of phosphines, phosphonium halides, sulfonium halides, sulfoxonium halides, and ammonium and alkyl ammonium halides. In the preferred embodiment, ethylene carbonate is reacted with terephthalic acid to produce bis(2-hydroxyethyl) terephthalate and/or polymers thereof.

REFERENCES:
patent: 2448767 (1948-09-01), Carlson
patent: 2766258 (1956-10-01), Malkemus
patent: 2784201 (1957-03-01), Chetwood
patent: 2799667 (1957-07-01), Drewitt et al.
patent: 2870124 (1959-01-01), Ham
patent: 3009903 (1961-11-01), Lincoln
patent: 3549692 (1970-12-01), Bockmann et al.
patent: 3641112 (1972-02-01), Ichikawa et al.
patent: 3798257 (1974-03-01), Wu
patent: 3842040 (1974-10-01), Browne et al.

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