High-molecular weight polycarbodiimide solution and methods for producing the same.

摘要

This invention provides methods for producing a high-molecular weight polycarbodiimide solution from an organic diisocyanate in the presence of a carbodiimidation catalyst, wherein 1)a chlorinated aliphatic hydrocarbon or 2)an alicyclic ether is used as a solvent. This invention also provides a polycarbodiimide solution with excellent stability in preservation.