| 摘要 |
PURPOSE:To enable the detection of a long-time deoxidized state, by utilizing the discoloration of an acetylenic high-molecular polymer film caused by oxygen. CONSTITUTION:An acetylenic high-molecular polymer film has metal gloss at first but comes to a blackish purple color upon the contact with oxygen and subsequently changes to a reddish brown color and finally comes to a milk white color. As the acetylenic high-molecular polymer, there are an acetylene high- molecular polymer and a copolymer of acetylene and its derivative and/or a diethylene monomer. In addition, as the acetylene derivative, there are ethynyl benzene, phenyl acetylene, methyl acetylene, hexyl acetylene, butyl acetylene, naphthyl acetylene, chloroacetylene, chloromethyl acetylene. |
