PIGMENT BASED INKS FOR HIGH SPEED DURABLE INKJET PRINTING,申请号US20080029972-传众专利搜索

PIGMENT BASED INKS FOR HIGH SPEED DURABLE INKJET PRINTING

申请公布号：US2008207811(A1)

申请号：US20080029972

申请日期：2008.02.12

申请公布日期：2008.08.28

申请人：

BRUST THOMAS B;WANG YONGCAI;YACOBUCCI PAUL D

发明人：BRUST THOMAS B.;WANG YONGCAI;YACOBUCCI PAUL D.

分类号：C09D11/10

主分类号：C09D11/10

摘要：An ink composition comprising (a) water, (b) pigment particles dispersed with a dispersant or self dispersing without the need for a dispersant, (c) at least one humectant, and (d) at least one polyurethane additive which is distinct from the dispersant, having an average molecular weight of at least about 10,000 and a sufficient number of acid groups to provide an acid number greater than about 60, the polyurethane being present at a level of at least 10 percent by weight relative to the pigment particles and comprising a polyether segment having a molecular weight greater than 250 and less than 2900, wherein the acid groups on the polyurethane are at least partially neutralized only with a monovalent inorganic base.