| abstract |
PROBLEM TO BE SOLVED: To provide a novel diamine, a polyimide precursor and a polyimide using the same. A diamine represented by the formula (1). However, in each of X 1 and X 5 independently represent a single bond such as; X 2 and X 4 are each independently -CH 2 -, etc.; X 3, such as an alkylene of 1 to 6 carbon atoms; Y 1 and Y 2 is each independently a single bond or the like; R is a linear, branched or cyclic hydrocarbon group having 1 to 20 carbon atoms; a is 0 or 1). [Chemical formula 1] 【Selection chart】 None |