US Patent 9434831 Benzimidazole based aerogel materials
Patent 9434831 was granted and assigned to ASPEN AEROGELS, INC. on September, 2016 by the United States Patent and Trademark Office.
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The present invention provides aerogel materials based on imidazoles and polyimidazoles. The polyimidazole based aerogel materials can be thermally stable up to 500° C. or more, and can be carbonized to produce a carbon aerogel having a char yield of 60% or more, specifically 70% or more. The present invention also provides methods of producing polyimidazole based aerogel materials by reacting at least one monomer in a suitable solvent to form a polybenzimidazole gel precursor solution, casting the polybenzimidazole gel precursor solution into a fiber reinforcement phase, allowing the at least one gel precursor in the precursor solution to transition into a gel material, and drying the gel materials to remove at least a portion of the solvent, to obtain an polybenzimidazole-based aerogel material.
US Patent 09434831 Benzimidazole based aerogel materials US Patent 9434831 Benzimidazole based aerogel materials
US Patent 09434831 Benzimidazole based aerogel materials
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