METHOD FOR DYEING AROMATIC POLYAMIDE FIBERS Russian patent published in 1994 - IPC

Abstract RU 2010896 C1

FIELD: textile industry. SUBSTANCE: fibers are formed from sulfuric-acid solution of aromatic polyamide containing 0.5-2.0% azotol from the mass of polyamide. Fresh-formed fibers are washed to pH 6.5-7.0, then treated with 5-40 g/l solution of diasole at room temperature, pH 5-10 within 3-300 s. Final step is washing with water and drying. EFFECT: higher efficiency.

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RU 2 010 896 C1

Authors

Baeva N.N.

Pronichkina I.K.

Sadova S.F.

Volokhina A.V.

Ivanov L.S.

Trushin V.A.

Dates

1994-04-15—Published

1992-01-24—Filed