Method of preserving and storing books and other papers

Coating processes – Coating by vapor – gas – or smoke

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427140, 427254, 4272554, C23C 1600

Patent

active

053935624

ABSTRACT:
Books and other documents that are produced wholly or partly on paper of wood pulp origin are preserved by storing in an enclosed space containing a controlled atmosphere including about 0.05 to 10 ppm ammonia gas. This invention and all United States patent rights thereunder are assigned to the Government of the United States as represented by the Librarian of Congress. The invention described herein may be manufactured and used by or for the Government of the United States of America for Governmental purposes without the payment of any royalties thereon.

REFERENCES:
patent: 3472611 (1969-10-01), Langwell
patent: 3676182 (1972-07-01), Smith
patent: 3703353 (1972-11-01), Kusterer et al.
patent: 3969549 (1976-07-01), Williams et al.
patent: 4051276 (1977-09-01), Williams et al.
patent: 4863566 (1989-09-01), Warren
patent: 4927497 (1990-05-01), Sharpe
patent: 5094888 (1992-03-01), Kamienski et al.
patent: 5104997 (1992-04-01), Kamienski et al.
Y. P. Kathpalia, Deterioration and Conservation of Paper, Part IV Neutraltion, reprinted from Indian Pulp & Paper, vol. XVII, No. 4, Oct. 1962, pp. 226, 230-232.
G. M. Cunha, Mass Deacidification for Libraries, Library Technology Reports, May-Jun. '87, vol. 23 No. 3 two title pages, pp. 382-383.
U.S. Congress, Office of Technology, Book Preservation Technologies, 1988, pp. 96-97, Deacidification Processes no month.

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