Patent ID: 9540487
Date: 2017-01-10
CPC Classifications: C08G,C08K,C08L,C09D,H05K,Y10T

Claim:
1. A polyamic acid solution (S2) comprising: a polyamic acid (PAA1) having the following general formula (1); wherein in the formula (1), X denotes a divalent organic group, and Y denotes a tetravalent organic group, a solvent (C) in which the polyamic acid (PAA1) is dissolved; and a substance (M) selected from the group consisting of calcium hydroxide, magnesium hydroxide, and strontium hydroxide, wherein the amount of substance (M) is from 1.4 to 14 equivalents per 100 equivalents of a constitutional repeating unit of the polyamic acid (PAA1) having the formula (1).