| abstract |
The present invention provides a novel diamine, a polyimine precursor and polyimine using the diamine.nn n n The diamine represented by formula (1). However, X 1 and X 5 each independently represent a single bond, etc.; X 2 and X 4 each independently represent -CH 2 -, etc.; X 3 is an alkylene group with 1 to 6 carbon atoms, etc.; Y 1 and Y 2 each independently represent Single bond, etc.; R is a straight chain, branched, or cyclic hydrocarbon group with carbon number 1-20; a is 0 or 1). |