Intellectual Property India Publishes Patent Application for 'Process For The Manufacture Of Sulfited Polyesters And Their Use As Re-Tanning Agents' Filed by Stahl International B. V.

MUMBAI, India, Aug. 1 -- Intellectual Property India has published a patent application (202517060816 A) filed by Stahl International B. V., Waalwijk, Netherlands, on June 25, for 'process for the manufacture of sulfited polyesters and their use as re-tanning agents.'

Inventor(s) include Ammenn, Jochen.

The application for the patent was published on Aug. 1, under issue no. 31/2025.

According to the abstract released by the Intellectual Property India: "The present invention provides a process for the manufacture of sulfited polyesters by esterification of unsaturated carboxylic acids or its anhydrides and optionally saturated carboxylic acids or its anhydrides, and polyols under mild conditions generally below 180 C, preferably below 160 C and subsequent sulfitation under mild conditions, generally below 180 C, preferably below 160 C. The sulfited polyesters can be used as re-tanning agent in the leather process."

The patent application was internationally filed on Dec. 20, 2023, under International application No.PCT/NL2023/050673.

Disclaimer: Curated by HT Syndication.