发明名称 |
Process for preparing nanoscale quinacridone |
摘要 |
This invention relates to a method for production of nanoscale size quinacridones through a wet-salt attrition process by combining a crude quinacridone pigment in the presence of (i) an inorganic salt, (ii) an organic liquid in which the quinacridone pigment and salt are substantially insoluble, and (iii) a quinacridone derivative in an amount less than 10 wt. % relative to the quinacridone pigment; discharging the ground quinacridone pigment into water; adding an acid to produce a solution pH of 1.5 or lower; and isolating the quinacridone pigment.
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申请公布号 |
US2006249052(A1) |
申请公布日期 |
2006.11.09 |
申请号 |
US20050120680 |
申请日期 |
2005.05.03 |
申请人 |
ROBERTSON GEORGE N;SUNG EDWARD H |
发明人 |
ROBERTSON GEORGE N.;SUNG EDWARD H. |
分类号 |
C07D471/00;C09B48/00 |
主分类号 |
C07D471/00 |
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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