Process for the preservation of printed cellulosic materials

Details Process for the preservation of printed cellulosic materials Process for the preservation of printed cellulosic materials

1988-04-26

1989-09-05

Chin, Peter

Paper making and fiber liberation

Processes and products

Non-fiber additive

162182, 422 1, 422 32, 422 34, 422 37, D21H 522

Patent

active

048635669

ABSTRACT:
A process and composition for use in the deacidification of cellulosic materials, such as books and printed papers, which comprises treating the materials under vacuum condition with a gaseous mixture of ammonia, and an organo epoxide reagent selected from the group consisting of alkyl compounds or mixtures thereof, and which produce in situ primary, secondary and tertiary amino compounds upon reaction with the ammonia.

REFERENCES:
patent: 3472611 (1969-10-01), Langwell
patent: 3676055 (1972-07-01), Smith
patent: 3703353 (1972-11-01), Kusterer et al.

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