公开(公告)号：US20140302432A1

公开(公告)日：2014-10-09

申请号：US13856496

申请日：2013-04-04

Applicant: XEROX CORPORATION

Inventor： Joo T. Chung ,  Chieh-Min Cheng ,  Steven M. Malachowski ,  Eric Joseph Young ,  Eric David Godshall ,  Brian Joseph Marion

IPC: G03G9/08

CPC classification number: G03G9/081 ,  B01F3/1221 ,  B01F3/20 ,  B01F7/087 ,  B01F2215/0059 ,  B01F2215/0422 ,  B01F2215/0427 ,  B01F2215/0477 ,  G03G9/08 ,  G03G9/0819 ,  G03G9/0827

Abstract: Processes for continuously coalescing particles from an aggregated particle slurry are disclosed. The aggregated particle slurry is heated, then coalesced by raising the pH. The coalesced particles are homogenized and exit as a coalesced particle slurry. A multi-screw extruder is used for the coalescing. These processes are useful for providing coalesced particles such as toner compositions.

Abstract translation: 公开了从聚集的颗粒浆料连续聚结颗粒的方法。 将聚集的颗粒浆液加热，然后通过提高pH而聚结。 将聚结的颗粒均质化并作为聚结的颗粒浆料排出。 使用多螺杆挤出机进行聚结。 这些方法对于提供聚结的颗粒例如调色剂组合物是有用的。

公开(公告)号：US20140261083A1

公开(公告)日：2014-09-18

申请号：US13840499

申请日：2013-03-15

Applicant: XEROX CORPORATION

Inventor： Joo CHUNG ,  Chieh-Min Cheng ,  Steven M. Malachowski ,  Eric David Godshall ,  Jim Lee Pearson

IPC: G03G9/09 ,  B01F7/00 ,  B01F15/02

CPC classification number: G03G9/0926 ,  B01F7/00416 ,  B01F15/0216 ,  C09B1/00 ,  C09B67/0002 ,  C09B67/0086 ,  C09B67/0088 ,  C09B67/009 ,  G03G9/0812

Abstract: A continuous process for making a pigment dispersion includes continuously feeding a pigment into a feed section of a screw extruder at a controlled rate, continuously feeding a surfactant into the feed section of the screw extruder at a controlled rate, continuously feeding water downstream of the feed section to emulsify the pigment and the surfactant, forming a water-in-pigment dispersion, continuously feeding additional water downstream of the previously fed water to cause a phase inversion of the water-in-pigment dispersion, forming a pigment-in-water dispersion, continuously homogenizing the pigment-in-water dispersion in the screw extruder to create a homogenous aqueous pigment dispersion and collecting the homogenous aqueous pigment dispersion from an exit section of the screw extruder.

Abstract translation: 用于制备颜料分散体的连续方法包括以可控制的速率将颜料连续地供给到螺杆挤出机的进料部分中，以受控的速率连续地将表面活性剂进料到螺杆挤出机的进料部分中，连续地将进料的水进料到进料 将颜料和表面活性剂乳化，形成水分 - 颜料分散体，将先前供给的水的下游的附加水连续地进料，引起水分 - 颜料分散体的相转化，形成水中颜料水分散体 在螺杆挤出机中连续匀化色素 - 水分散体以产生均匀的水性颜料分散体并从螺杆挤出机的出口部分收集均匀的水性颜料分散体。