| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new water-soluble polyimide resin, a production method thereof and use thereof. <P>SOLUTION: There is provided a water-soluble polyimide resin, which has, in the structure of polyimide molecule of a new water-soluble polyimide resin, a hydrophilic functional group, such as -OH, -COOH, increasing the solubility in alkaline aqueous solutions, and is usable as an insulating protective film of electric products and photoelectric products. The water-soluble polyimide resin preferably has about 10,000-300,000 polystyrene-converted number average molecular weight (Mn) by gel permeation chromatography (GPC). <P>COPYRIGHT: (C)2011,JPO&INPIT |
