发明授权
US06890647B1 Alumina hydrate particle, alumina hydrate particle dispersion sol and liquid coating for forming ink-receiving layer and substrate having ink-receiving layer
失效
氧化铝水合物颗粒，水合氧化铝颗粒分散溶胶和用于形成油墨接收层的液体涂料和具有油墨接收层的基材
- 专利标题： Alumina hydrate particle, alumina hydrate particle dispersion sol and liquid coating for forming ink-receiving layer and substrate having ink-receiving layer
- 专利标题（中）： 氧化铝水合物颗粒，水合氧化铝颗粒分散溶胶和用于形成油墨接收层的液体涂料和具有油墨接收层的基材
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申请号： US10070110申请日： 2000-08-09
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公开(公告)号： US06890647B1公开(公告)日： 2005-05-10
- 发明人: Hiroyasu Nishida , Naoyuki Enomoto , Michio Komatsu
- 申请人： Hiroyasu Nishida , Naoyuki Enomoto , Michio Komatsu
- 申请人地址： JP
- 专利权人： Catalysts & Chemicals Industries Co., Ltd.
- 当前专利权人： Catalysts & Chemicals Industries Co., Ltd.
- 当前专利权人地址： JP
- 代理机构： Webb Ziesenheim Logsdon Orkin & Hanson, P.C.
- 优先权： JP11-245496 19990831
- 国际申请： PCTJP00/05334 WO 20000809
- 国际公布： WO0116026 WO 20010308
- 主分类号： C01F7/00
- IPC分类号： C01F7/00 ; C01F7/02 ; C01F7/34 ; B32B5/16
摘要：
Highly transparent alumina hydrate particles having a large pore volume, having a pore diameter which falls in a specified range and, when formed into a high-concentration dispersion sol, exhibiting a low viscosity are provided. Alumina hydrate particles having a composition represented by the general formula xM2O.y(NH4)2O.Al2O3.zH2O (2×10−4≦x≦25×10−4, 0.1×10−4≦y≦20×10−4, 0.6≦z≦2.5, M represents an alkali metal; when the alkali metal is in the form of M2O, x is the number of moles thereof per mol of Al2O3; when ammonia is in the form of (NH4)2O, y is the number of moles thereof per mol of Al2O3; and z is the number of moles of hydration water (H2O) per mol of Al2O3), the alumina hydrate particles having an average particle diameter of 0.02 to 0.2 μm, a total pore volume of 0.5 to 1.5 ml/g, and a volume of pores whose diameter is from 15 to 30 nm ranging from 0.3 to 1.0 ml/g.