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US5416184A High-molecular weight polycarbodiimide solution and methods for producing the same 失效
高分子量聚碳化二亚胺溶液及其制备方法

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.
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