发明名称 |
Method and equipment for manufacturing pigment dispersion |
摘要 |
Pigment dispersion is manufactured by continuously flushing pigment press-cake. First and second troughs supply hydrophobic liquid organic media and the pigment wet-cake respectively at a constant rate to a twin screw co-rotating extruder having a L/D (length/diameter) value of 25 or more. The twin screw co-rotating extruder includes a feeding part where the hydrophobic liquid organic media and the pigment wet-cake are fed from the first and second troughs, a flushing part for flushing the pigment particles from water phase to form an organic medium phase, and a dehydrating part for removing water from the flushed mixture. The hydrophobic liquid organic media and the pigment wet-cake are fed to the twin screw co-rotating extruder, and the pigment press-cake is flushed and dehydrated continuously in the extruder to obtain the pigment dispersion.
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申请公布号 |
US4474473(A) |
申请公布日期 |
1984.10.02 |
申请号 |
US19830506885 |
申请日期 |
1983.06.21 |
申请人 |
SAKATA SHOKAI LTD.;SUMIKA COLOR CO., LTD. |
发明人 |
HIGUCHI, HIROSHI;KURAHASHI, TAKAYUKI;MUSHIAKE, NAOHIKO;TANIGUCHI, YOICHI |
分类号 |
C09D11/00;B29B7/00;C08J3/20;C08J3/22;C09B67/00;C09B67/46;C09C3/00;C09D11/02;C09D17/00;(IPC1-7):B29B1/10 |
主分类号 |
C09D11/00 |
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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