MUMBAI, India, July 25 -- Intellectual Property India has published a patent application (202517066854 A) filed by Saint-Gobain Isover, Courbevoie, France, on July 14, for 'method for preparing a thermosetting binder composition based on water-soluble or water-dispersible lignin ester, for binding fibres.'
Inventor(s) include Soisson, Arnaud.
The application for the patent was published on July 25, under issue no. 30/2025.
According to the abstract released by the Intellectual Property India: "The present invention relates to a method for preparing a thermosetting binder composition, comprising the following steps: - mixing at least one lignin, at least one organic monocarboxylic or sulfonic acid, and at least one organic non-polymeric polycarboxylic acid; and - heating said mixture at a temperature of between 90 C and 170 C, preferably between 110 C and 150 C, for a duration of between 5 seconds and 5 minutes, preferably between 15 seconds and 1 minute, so as to form at least one water-soluble or water-dispersible lignin ester. The present invention also relates to a thermosetting binder composition that can be obtained by such a method, said binder composition containing at least one water-soluble or water-dispersible lignin ester, at least one residual lignin, at least one free residual organic non-polymeric polycarboxylic acid, and at least one free residual organic monocarboxylic or sulfonic acid. The present invention also relates to a method for manufacturing an insulation product comprising mineral fibres or natural organic fibres using a thermosetting binder composition as obtained previously, but diluted in water, and to an insulation product that can be obtained by the above-mentioned manufacturing method."
The patent application was internationally filed on Dec. 19, 2023, under International application No.PCT/FR2023/052058.
Disclaimer: Curated by HT Syndication.
