Binder for mineral fibres

C - Chemistry – Metallurgy – 03 – C

Patent

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Details

C03C 25/32 (2006.01) C08J 5/08 (2006.01) C08L 77/12 (2006.01) D04H 1/64 (2006.01)

Patent

CA 2659736

An aqueous binder composition for mineral fibres comprises a water-soluble binder component obtainable by reacting glycerol and at least one alkanolamine with at least one carboxylic anhydride in proportions such that the ratio of equivalents of amine groups plus hydroxy groups (NH+OH) to equivalents of carboxy groups (COOH) in the binder component is within the range of about 0.4 to 2.0, glycerol being used in an amount such that the equivalent ratio of glycerol OH groups to total equivalents of amine groups plus hydroxy groups (NH+OH) is 0.1 to 0.9, and, optionally, treating the reaction product with a base.

L'invention concerne une composition aqueuse de liant pour fibres minérales, laquelle composition inclue un composant de liant soluble dans l'eau pouvant être obtenu par réaction de glycérol et d'au moins une alcanolamine avec au moins un anhydride carboxylique dans des proportions telles que le rapport d'équivalents de groupes amine plus groupes hydroxy (NH+OH) aux équivalents de groupes carboxy (COOH) dans le composant liant se situe dans une plage d'environ 0,4 à 2,0, le glycérol étant utilisé dans une quantité telle que le rapport équivalent de groupes OH du glycérol aux équivalents totaux de groupes amine plus groupes hydroxy (NH+OH) est de 0,1 à 0,9, et, facultativement, le traitement du produit de réaction par une base.

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