Method of deacidifying paper

Details Method of deacidifying paper Method of deacidifying paper

1976-02-23

1977-09-27

Lusignan, Michael R.

Coating processes

Coating by vapor, gas, or smoke

21 7, 21 58, 162160, 162187, 264 81, 427296, 427316, 427343, 427395, C23C 1100, C23C 1300, B05D 302

Patent

active

040512762

ABSTRACT:
This invention relates to solutions of selected organo-metallic compounds ssolved in an organic solvent which are useful for deacidifying a cellulose fiber paper. The paper is treated by means well known in the art, such as dipping or spraying. The organo-metallic compounds useful in this invention are compounds which may be rapidly hydrolyzed to an alkaline material such as lower alkyl compounds of lithium, aluminum, magnesium, gallium, zinc, and mixtures of these compounds. The organic solvent is a liquid which will not react with the organo-metallic compound, dissolve inks, or cause discoloration of other materials usually found in and around printed matter. After the paper is impregnated with the solution the organo-metallic compound remaining on the paper is hydrolyzed to an alkaline material.

REFERENCES:
patent: 2957785 (1960-10-01), Leatherland
patent: 3472611 (1969-10-01), Langwell
patent: 3676055 (1972-07-01), Smith
patent: 3676182 (1972-07-01), Smith
patent: 3703353 (1972-11-01), Kusterer et al.
patent: 3771958 (1973-11-01), Kusterer et al.
patent: 3898356 (1975-08-01), Williams et al.

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