Compagnie de Saint-Gobain has been granted a patent for a thermosetting binder composition that includes water, a water-soluble oligomeric ester of citric acid, and various saccharides. The composition features a dry matter content of 40-80% by weight and is designed for bonding mineral or organic fibers. GlobalData’s report on Compagnie de Saint-Gobain gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Compagnie de Saint-Gobain, Heater-integrated de-icing windows was a key innovation area identified from patents. Compagnie de Saint-Gobain's grant share as of July 2024 was 58%. Grant share is based on the ratio of number of grants to total number of patents.
Thermosetting binder composition for mineral or organic fibers
The granted patent US12071569B2 presents a thermosetting binder composition that primarily consists of water and a water-soluble oligomeric ester derived from citric acid and various saccharides. The saccharides include options such as erythritol, xylitol, maltitol, and hydrogenation products of starch with a dextrose equivalent (DE) ranging from 25 to 99. The composition is characterized by a dry matter content between 40% and 80%, with the oligomeric ester constituting at least 80% of this dry matter. Additionally, the formulation is designed to contain less than 10% free sorbitol by weight relative to its dry matter content, ensuring a specific balance of components for optimal performance.
Further claims detail specific parameters for the binder composition, including a saccharide/citric acid weight ratio between 25/75 and 55/45, a Brookfield viscosity of 0.25 to 4.0 Pa·s at a solids content of 70% by weight, and a pH range of 1 to 7. The patent also allows for the inclusion of an esterification catalyst and sodium hypophosphite. Notably, the composition can be refined to contain less than 5% residual free citric acid and can be tailored to feature specific saccharides, such as xylitol, while maintaining a high proportion of the oligomeric ester. These attributes suggest a versatile binder suitable for various applications, emphasizing its potential utility in industries requiring thermosetting materials.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
