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| 專利名稱 | Method for enhancing the corrosion resistance of chemical conversion coating aluminum | | 專利證號 | US6074495A | | 國別 | 美國 | | 獲證日期 | 2000-06-13 | | 專利摘要 | A method for treating aluminum to enhance corrosion resistance of its surface. The chemical conversion coating aluminum and aluminum alloys are exposed to an aqueous PU solution to form a PU film on the surface. The aqueous PU solution comprises: (i) 5-15% weight of water dispersable polyurethane resin, (ii) 0.1-56 weight of cross-linking agent, and (iii) 80-94.9% weight of water. | IPC國際分類號 | B05D000700 | C08G001808 | C08G001883 | C09D017504 | C23C002283 |
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