Deacidification of cellulose based materials using...

Details Deacidification of cellulose based materials using... Deacidification of cellulose based materials using...

D - Textiles, Paper

21

H

D21H 25/18 (2006.01) D21H 17/06 (2006.01) D21H 17/11 (2006.01) D21H 17/64 (2006.01) D21H 21/24 (2006.01)

Patent

CA 2326998

An improved method of deacidifying books, imaged paper and other imaged materials having a cellulose base wherein, for a sufficient time to raise the pH of the materials, the materials are treated with alkaline particles of a basic metal oxide, hydroxide or salt dispersed in a hydrofluoroether carrier, alone, or in combination with a perfluorinated carrier. A surfactant is added.

Cette invention a trait à une technique améliorée de désacidification de livres, images sur papier et autres matériaux imagés renfermant une base cellulosique. Les matières sont traitées, pendant un laps de temps suffisant pour faire s'élever leur pH, à l'aide de particules alcalines d'un oxyde métallique basique, d'un hydroxyde ou d'un sel dispersé dans un véhicule hydrofluoroéther, seul ou combiné à un véhicule perfluoré. On ajoute un tensio-actif.

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