SOLUTION IN POLAR SOLVENT FOR PRODUCTION OF POLYIMIDES Russian patent published in 1995 - IPC

Abstract RU 2051157 C1

FIELD: production of composite materials. SUBSTANCE: desired solution of polyimide in polar solvent contains diester of pyromellitic acid and diamine at molar ratio 1-1.1:1-1.1. Summary concentration of origin materials is 40-70 mass Compound being chosen of group which includes diamines of I-IV formulae is used as said diamine. Said formulae are given in specification. EFFECT: improves quality of desired product. 3 cl, 2 tbl

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RU 2 051 157 C1

Authors

Tomas Papin Gannett[Us]

Kh'Ju Kharper Gibbz[Us]

Dates

1995-12-27—Published

1984-10-25—Filed