The present invention is drawn to an encapsulated pigment. The pigment can be encapsulated by both a first polymer layer and a second polymer layer, with the second polymer layer encapsulating the first polymer layer and/or the pigment. The first polymer layer can have less than 2 wt% polymerized acid monomer. The second polymer layer is more hydrophilic than the first polymer layer, and is present at a weight ratio of first polymer layer to second polymer layer of greater than about 1.5:1. Methods of forming an encapsulated pigment are also presented.
申请公布号
WO2009064278(A1)
申请公布日期
2009.05.22
申请号
WO2007US24099
申请日期
2007.11.15
申请人
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.;LIU, HUI;CAGLE, PHILLIP, C.;INGLE, DAVID, MICHAEL