IN276846: A processes for preparation of pure alkyl esters from alkali metal salt of carboxylic acid
Abstract
The dehydrated alkali metal salts of carboxylic acid are dissolved in the alcohol, such as methanol or ethanol, or butanol, to make their solution in corresponding alcohol. The solution alcohol is further treated with carbon dioxide under pressure or at atmospheric pressure at elevated temperature. The carboxylic acid gets converted into corresponding alkyl ester and calcium carbonate of sodium carbonate or potassium carbonate as the by-product. Calcium lactate or sodium lactate or sodium acetate or sodium benzoate, or sodium salicylate as alkali metal salt solution prepared in methanol or ethanol, or butanol when treated with carbon dioxide under pressure or at atmospheric pressure at elevated temperature gets converted to methyl lactate or ethyl lactate or methyl acetate or methyl benzoate or methyl salicylate as the product.
Filing Date:
07-09-2009
Issue Date:
02-11-2016
Applicant:
CSIR-National Chemical Laboratory (CSIR-NCL), Pune
Patent No:
IN276846
Application No:
1842DEL2009
Inventor(s):
Prashant Purushottam Barve, Bhaskar Dattatraya Kulkarni, Milind Yashwant Gupte, Sanjay Narayan Nene, Ravindra William Shinde, Sanjay Pandurang Kamble
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