发明名称 |
POLYMERIC DISPERSANTS USED FOR AQUEOUS PIGMENTED INKS FOR INK-JET PRINTING |
摘要 |
The present invention relates to graft copolymers, useful as dispersants in ink jet ink compositions, which comprise two structurally distinct segments: a hydrophilic segment and a hydrophobic segment. The preferred hydrophilic segment is comprised preferably of a methacrylic acid polymer, or a copolymer thereof with another monomer, such as styrene sulfonic acid. The preferred hydrophobic segment comprises a polymer or copolymer containing electron rich functional groups comprised of a plurality of methacrylate derivatized monomers, preferably a methacrylate ester monomer, or a substituted methacrylate ester monomer (a methacrylate ester where the alkyl group is replaced with a siloxyl substituent, an oligomeric siloxane). The present invention also relates to aqueous ink compositions which include the polymeric dispersants of the present invention. A further embodiment of the present invention comprises a polymer comprising a monomeric hydrophobic head and a polymeric tail. In a preferred embodiment, the monomeric hydrophobic head is (ethylene glycol) 2,4,6-tris-(1-phenylethyl)phenyl ether. |
申请公布号 |
EP1423482(A4) |
申请公布日期 |
2007.05.02 |
申请号 |
EP20020756768 |
申请日期 |
2002.07.30 |
申请人 |
LEXMARK INTERNATIONAL, INC. |
发明人 |
AKERS, CHARLES, EDWARD, JR.;FRANEY, TERENCE, EDWARD;SUN, JING, X.;BUTLER, CARLA, MARARY |
分类号 |
B41J2/01;B41M5/00;C08F220/06;C08F290/06;C09D11/30;C09D11/326 |
主分类号 |
B41J2/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|