Method of deacidifying paper
AssigneeThe United States of America as represented by the Librarian of Congress
InventorsJohn C. Williams, George B. Kelly, Jr.
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Abstract
A method of deacidifying paper wherein the paper has a substantially cellulose fiber base or substrate by exposing the paper to the vapors of a volatile organometallic compound and subsequently decomposing said compound to a base or alkaline material in situ. The treated material is usually first dried in vacuo and exposed under anhydrous or nearly anhydrous conditions to the organic-metallic compound. The method has the advantage of being able to treat large quantities of material at any one time.
Claims9
A method of deacidifying cellulosic paper by first impregnating said paper with the vapors of a volatile organo-metallic compound wherein said compound is volatile at temperatures up to about 150.degree. C;
- does not discolor said paper;
- does not interact with inks used in books;
- and is readily reactive with acids;
- and subsequently hydrolyzing said compound to an alkaline material in situ by exposing said paper to a gaseous hydrolyzing environment.
Dependencies are inferred from the claim text.