公开(公告)号：US20060037517A1

公开(公告)日：2006-02-23

申请号：US11204083

申请日：2005-08-15

Applicant: Christopher Teeley ,  David Kassin ,  Douglas Cochran ,  Christopher Palmer ,  Norman Pratt

Inventor： Christopher Teeley ,  David Kassin ,  Douglas Cochran ,  Christopher Palmer ,  Norman Pratt

IPC: C08K5/00

CPC classification number: B01F15/0201 ,  B01F7/082 ,  B01F2015/0221 ,  C09B67/0021

Abstract: A method for preparing an organic pigment dispersion, such as a flush pigment or ink product, comprises steps of introducing into a twin screw extruder a stable, water-borne pigment dispersion, an organic medium, and a destabilizing agent; mixing together the stable, water-borne pigment dispersion, the organic medium, and the destabilizing agent to produce a pigment flush phase and a water phase; and removing at least a part of the water phase. A twin-screw extruder for carrying out the flushing method has an addition and flushing zone, a water removal zone, and a zone for rinsing the crude organic pigment dispersion or flush with water and removing the rinse water. Additional materials may be added to form a finished pigmented product such as an ink product, masterbatch, or toner.

Abstract translation: 制备有机颜料分散体如冲洗颜料或油墨产品的方法包括以下步骤：向双螺杆挤出机中引入稳定的水性颜料分散体，有机介质和不稳定剂; 将稳定的水性颜料分散体，有机介质和去稳定剂混合在一起以产生颜料冲洗相和水相; 并除去水相的至少一部分。 用于进行冲洗方法的双螺杆挤出机具有添加和冲洗区域，除水区域和用于漂洗粗有机颜料分散体或与水冲洗并除去冲洗水的区域。 可以添加另外的材料以形成成品着色产品，例如油墨产品，母料或调色剂。