Method of removing acid component in deteriorated acetate film

Details Method of removing acid component in deteriorated acetate film Method of removing acid component in deteriorated acetate film

2006-12-05

2006-12-05

Carrillo, Sharidan (Department: 1746)

Cleaning and liquid contact with solids

Processes

For metallic, siliceous, or calcareous basework, including...

C134S026000, C134S041000, C134S042000

Reexamination Certificate

active

07144461

ABSTRACT:
There is provided a method of removing acids from the surface and interior of an acetate film produced by deterioration during storage. Such methods are characterized by extracting and removing the acids from the surface and interior of the acetate film, and the extraction treatment includes solvent extraction or evacuation (heating). This method suppresses the deterioration process in the storage of the acetate film.

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patent: 2953464 (1960-09-01), Rossin et al.
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patent: 4098996 (1978-07-01), Ryan et al.
patent: 2002-179819 (2002-06-01), None
patent: 2003-171485 (2003-06-01), None
Computer Translation of JP 2003-171485, Namita Yoshiyuki.
N.S. Allen et al. J. Photogr. Sci. 36, 194-198 (1988).

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