| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inkjet ink which shows good shelf stability when stored at an ordinary temperature, is capable of forming a relatively thick film (≥1 μm) by single jetting and contains a high concentration (≥25 wt.%) of polyamic acid. <P>SOLUTION: The inkjet ink contains polyamic acid (A) which has a crosslinkable group at its molecular terminal, has a weight average molecular weight of 500-7,500 and is obtained by reacting at least a compound (a1) having two or more acid anhydride groups, a diamine (a2) and a terminal-crosslinking agent (a3) represented by formula (1) or a terminal-crosslinking agent (a4) represented by formula (2) (wherein R<SP>1</SP>and R<SP>2</SP>are each independently a 2-100C organic group having an unsaturated hydrocarbon structure). <P>COPYRIGHT: (C)2010,JPO&INPIT |
