What is Block co-Polyimide ?

Polyimide is a polymers made from acid and amine.
Depend on a combination of monomers, it will make different characteristics and functions of the polymer.
PI making this various combination to be regularly arranged and the challenge of making a polyimide having a plurality of characteristics, and function succeeded for the first time in the world in it’s development.

What is Block co-Polyimide ?