公开(公告)号：US06808559B2

公开(公告)日：2004-10-26

申请号：US10324019

申请日：2002-12-20

申请人： Christopher R.L. Golley ,  John A. Manasso

发明人： Christopher R.L. Golley ,  John A. Manasso

IPC分类号： C04B1410

CPC分类号： B41M5/52 ,  B41M1/10 ,  B41M5/5218 ,  C01P2004/54 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/22 ,  C04B33/14 ,  C04B33/36 ,  C04B35/6261 ,  C04B35/62625 ,  C04B35/6263 ,  C04B35/63 ,  C04B35/632 ,  C04B35/63424 ,  C04B2235/3201 ,  C04B2235/3217 ,  C04B2235/349 ,  C04B2235/447 ,  C04B2235/52 ,  C04B2235/5292 ,  C09C1/42 ,  C09D11/03 ,  D21H17/68 ,  D21H19/40 ,  Y10T428/31993

摘要： The present invention provides kaolin clay pigments having at least the following characteristics: Brightness (GE): at least about 89.0; Shape Factor: at least about 30; Brookfield viscosity, measured at 20 rpm and at less than or equal to about 65% solids: about 100 to about 700 centipoise; and Hercules viscosity, measured at 18 dynes and at less than or equal to about 65% solids: about 200 rpm to about 1000 rpm. Preferred kaolin sources include Brazilian kaolins, especially Rio Capim kaolins. The kaolin pigments of the present invention possess a combination of optical and physical properties, such as brightness, printability, and transfer efficiency, not previously seen in existing commercial products. They are useful, e.g., in paper filler and coating compositions, ink compositions, and printing applications, especially rotogravure printing.

摘要翻译： 本发明提供至少具有以下特征的高岭土颜料：亮度（GE）：至少约89.0; 形状因子：至少约30; 布鲁克菲尔德粘度，以20rpm和小于或等于约65％固体测量：约100至约700厘泊; 和Hercules粘度，以18达因和小于或等于约65％固体测量：约200rpm至约1000rpm。 优选的高岭土来源包括巴西高岭土，特别是Rio Capim高岭土。 本发明的高岭土颜料具有光学和物理性能的组合，例如亮度，可印刷性和转印效率，这在现有的商业产品中未见过。 它们是有用的，例如在纸填料和涂料组合物，油墨组合物和印刷应用中，特别是凹版印刷。