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2 130 980

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IPC

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Application

97103880/04, 1997-03-12

(22)

Actual filing date

1997-03-12

(45)

Published

1999-05-27

(72)

Inventor

Volokhina A.V.Zhuravleva A.I.Sokira A.N.Budnitskij G.A.Glazunov V.B.

(73)

Holder

Vserossijskij Nauchno-Issledovatel'Skij Institut Polimernykh Volokon S Opytnym Zavodom

METHOD OF MANUFACTURING HIGH-STRENGTH FIBER Russian patent published in 1999 - IPC

Abstract RU 2130980 C1

FIELD: synthetic fibers. SUBSTANCE: high-strength fibers based on aromatic copolyamidobenzimidazoles and designed for use in organic plastics useful in aerospace and armament industries are manufactured by introducing polyvinylpyrrolidone into polycondensation solution of aromatic copolyamide in dimethylacetamide and spinning fibers in spinning bath, followed by washing, drying, and heat treatment. According to invention, aromatic copolyamide is copolyamidobenzimidazole prepared by low-temperature solution semicondensation of terephthaloyl chloride (100 mol %), 5(6)-amino-2-p-aminophenylenebenzimidazole (70 mol %), and p-phenylenediamine (30 mol %) in dimethylacetamide-lithium chloride mixture, to which polyvinylpyrrolidone is added in amount 5 to 10%. EFFECT: increased bending resistance and resistance to axial compression. 2 cl, 1 tbl

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RU 2 130 980 C1

Authors

Volokhina A.V.

Zhuravleva A.I.

Sokira A.N.

Budnitskij G.A.

Glazunov V.B.

Dates

1999-05-27—Published

1997-03-12—Filed

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