Process for preparing solid particulate dialkylesters from their

Details Process for preparing solid particulate dialkylesters from their Process for preparing solid particulate dialkylesters from their

1990-05-14

1992-12-29

Killos, Paul J.

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

Organic compounds

Carboxylic acid esters

560 64, 560 59, 560 76, 560 96, C07C 6976

Patent

active

051753391

ABSTRACT:
A process for producing a dialkyl ester (i.e. BTDE) from its corresponding dianhydride (i.e., BTDA) comprising mixing the dianhydride, an organic solvent, solid catalyst and an alcohol capable of reacting with the dianhydride stirring the solution until the dianhydride and alcohol have reacted to form the dialkyl ester, separating the dialkyl ester from the catalyst and drying the ester to form a solid paticulate product. The product has a purity of over 85%.

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