MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202617075697 A) filed by Honshu Chemical Industry Co. , Ltd. on June 18, 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 method for producing a polycarboxylic acid ester compound which has a reduced content of a specific impurity and has an improved purity. Provided is a method for producing a polycarboxylic acid ester compound (1) represented by general formula (1), the method comprising an etherification reaction step in which a polyhydroxy aromatic compound (2) represented by general formula (2), a halocarboxylic acid ester compound (3) represented by general formula (3), and potassium carbonate are used to conduct an etherification reaction, the potassium carbonate having a water content in the range of 0.01-1.5 wt%.
Disclaimer: Curated by HT Syndication.
