MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202617076247 A) filed by Honshu Chemical Industry Co. , Ltd. on June 19, 2026, for Method For Producing Polycarboxylic Acid Ester Compound.
Inventors include Fujioka, Rie; Yamane, Kentaro; and Kodera, Masato Number.
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: The present invention addresses the problem of providing a polycarboxylic acid ester compound production method for producing a target polycarboxylic acid ester compound more rapidly and with further improved purity by reducing the content of a specific impurity. The above problem is solved by providing a method for producing a polycarboxylic acid ester compound (1) represented by general formula (1), wherein the method comprises an etherification reaction step for using a polyhydroxy aromatic compound (2) represented by general formula (2), a halocarboxylic acid ester compound (3) represented by general formula (3), and potassium carbonate to initiate an etherification reaction, and the specific surface area of the potassium carbonate is in the range of 0.1-2.0 m2/g .
Disclaimer: Curated by HT Syndication.
