发明名称 |
Aqueous pigment dispersion for light-shielding paper |
摘要 |
There is provided an aqueous pigment dispersion for a light-shielding paper comprising a pigment component, an aqueous resin and water, wherein the pigment component contains 2 to 50% by weight of graphite in which at least 80% of the total number of particles thereof has the maximum diameter of 1 to 30 mu m, 2 to 60% by weight of a colored pigment, and 10 to 90% by weight of a white pigment, and each specific gravity of the colored pigment and the white pigment is 2.0 to 6.0 g/cm3. The pigment dispersion of the present invention can provide light-shielding properties by rendering coating onto a paper base material and also can provide a light-shielding paper which facilitates recycling and has a high quality when recycling of waste paper is effected.
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申请公布号 |
US5856398(A) |
申请公布日期 |
1999.01.05 |
申请号 |
US19970825501 |
申请日期 |
1997.03.31 |
申请人 |
TOYO INK MANUFACTURING CO., LTD. |
发明人 |
OIZUMI, TETSURO;TSUJI, KOSAKU;TANAKA, HISAO;FUJIGAMORI, TSUTOMU |
分类号 |
C09D5/00;C09D7/12;D21H19/38;D21H19/58;D21H21/28;(IPC1-7):C08K3/04;C08K3/26;C08K3/30;C08K3/34 |
主分类号 |
C09D5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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