| 摘要 |
PROBLEM TO BE SOLVED: To provide a rust preventive film used for sealing materials and products comprising silver, copper or their alloys and protecting the same from corrosion and discoloration particularly caused by sulfur-containing gas, in which the rust preventive components have high safety and the rust preventive components also have excellent effect, thus their amounts to be added can be suppressed, and therefore, transparency is high, and to provide a rust prevention method using the rust preventive film. SOLUTION: As for the rust preventive film, active zinc oxide powder, basic zinc carbonate powder or their mixture are dispersed in a thermoplastic resin. COPYRIGHT: (C)2009,JPO&INPIT
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