发明授权
US06312858B1 Protective polycarbonate-polyurethane overcoat for image recording elements
失效
用于图像记录元件的保护性聚碳酸酯 - 聚氨酯外涂层
- 专利标题： Protective polycarbonate-polyurethane overcoat for image recording elements
- 专利标题（中）： 用于图像记录元件的保护性聚碳酸酯 - 聚氨酯外涂层
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申请号： US09747730申请日： 2000-12-22
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公开(公告)号： US06312858B1公开(公告)日： 2001-11-06
- 发明人: Paul D. Yacobucci , Hwei-Ling Yau , Catherine A. Falkner , Wendy S. Krzemien
- 申请人： Paul D. Yacobucci , Hwei-Ling Yau , Catherine A. Falkner , Wendy S. Krzemien
- 主分类号： G03C176
- IPC分类号： G03C176
摘要：
The present invention relates to imaging elements, including photographic elements and ink-jet recording media, having a protective overcoat that resists fingerprints, common stains, and spills. More particularly, the protective overcoat comprises a polycarbonate-containing polyurethane polymer having a Tg of 0 to 70° C. and a molecular weight of 15,000 to 200,000, wherein the amount of polycarbonate, based on the total weight of the polymer, is at least 20 percent.