Film deterioration preventing material and acid gas removing agent

• US 10,639,610 B2
• Filed: 09/29/2016
• Issued: 05/05/2020
• Est. Priority Date: 09/29/2015
• Status: Active Grant

• Current Assignee: Ashigara Manufacturing Inc.
• Original Assignee: Ashigara Manufacturing Inc.
• Inventors: Matsui, Kazunori, Ishii, Terumitsu, Hashimoto, Akira
• Primary Examiner(s): Johnson, Edward M
• Application Number:
  US15/763,594
• Publication Number:
  US 20180272310A1
• Time in Patent Office: Days
• Field of Search: 502402
• CPC Class Codes: B01D 2251/304 of sodium
• CPC Class Codes: B01D 2251/306 of potassium
• CPC Class Codes: B01D 2251/606 Carbonates
• CPC Class Codes: B01D 2257/70 Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
• CPC Class Codes: B01D 53/14 by absorption
• CPC Class Codes: B01D 53/72 Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
• CPC Class Codes: B01D 53/82 with stationary reactants
• CPC Class Codes: B01J 20/04 comprising compounds of alkali metals, alkaline earth metals or magnesium
• CPC Class Codes: B01J 20/043 Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
• CPC Class Codes: B01J 20/28033 Membrane, sheet, cloth, pad, lamellar or mat
• CPC Class Codes: B65D 81/26 with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents B65D33/01 takes precedence; Applications of corrosion inhibitors or desiccators
• CPC Class Codes: B65D 81/267 the absorber being in sheet form

Abstract

The present invention provides a film deterioration preventing material for using together with a record storage film having a triacetyl cellulose film as the base film thereof, wherein the material includes an alkali metal carbonate or an alkali metal hydrogen carbonate as an acetic acid gas removing agent to remove the acetic acid gas in an atmosphere. The present invention also provides an acid gas removing agent to remove the acid gas in an atmosphere, wherein the acid gas in the atmosphere is removed by an alkali metal carbonate or an alkali metal hydrogen carbonate.

Claims

1. A film deterioration preventing material for using together with a record storage film having a triacetyl cellulose film as a base film thereof,

wherein the material includes an alkali metal carbonate or an alkali metal hydrogen carbonate as an acetic acid gas removing agent to remove the acetic acid gas in an atmosphere.

2. The film deterioration preventing material according to claim 1, wherein the alkali metal carbonate is sodium carbonate or potassium carbonate.

3. The film deterioration preventing material according to claim 1, wherein the alkali metal hydrogen carbonate is sodium hydrogen carbonate or potassium hydrogen carbonate.

4. The film deterioration preventing material according to claim 1, wherein the film deterioration preventing material is a mixture of at least a film deterioration inhibitor including the acetic acid gas removing agent as a component and a thermoplastic resin.

5. The film deterioration preventing material according to claim 1, wherein at least the film deterioration inhibitor including the acetic acid gas removing agent as a component is enclosed in a container.

6. The film deterioration preventing material according to claim 1, wherein the film deterioration preventing material is sheet-shaped.

7. An acid gas removing agent to remove the acid gas in an atmosphere,

wherein the acid gas in the atmosphere is removed by an alkali metal carbonate or an alkali metal hydrogen carbonate.