Polyimide precursor solution

Polyimide precursor solution

  • CN 105,229,083 A
  • Filed: 05/19/2014
  • Published: 01/06/2016
  • Est. Priority Date: 05/20/2013
  • Status: Active Application
First Claim
Patent Images

1. a polyimide precursor solution polyamic acid and acid ionization constant pKa is less than 8.5 and the salt of the alkaline compound of more than 4.5 is dissolved in containing in the solvent of polyvalent alcohol.

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