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 hydrofluorether carrier,...http://www.google.de/patents/US6342098?utm_source=gb-gplus-sharePatent US6342098 - Deacidification of cellulose based materials using hydrofluoroether carriers
