| abstract |
PROBLEM TO BE SOLVED: To provide a method for efficiently producing an aromatic polyamide fiber for rubber reinforcement having excellent initial adhesion to rubber and water-resistant adhesion. SOLUTION: The method for producing an aromatic polyamide fiber for rubber reinforcement according to the present invention comprises, on the surface of the aromatic polyamide fiber, a resorcinol-formaldehyde precondensate based on 100 parts by weight of a vinylpyridine-styrene-butadiene copolymer latex. 100 parts by weight of a mixture (A) obtained by mixing 2 to 10 parts by weight, and a polyepoxide compound (B) 10 ２０20 parts by weight, a triazine compound (C) 5 to 15 parts by weight, and an ethyleneimine compound (D) 20 to 40 parts by weight containing a first treatment liquid, followed by heat treatment, Next, 100 parts by weight of a mixture (E) obtained by mixing 12 to 25 parts by weight of a resorcinol-formaldehyde precondensate with 100 parts by weight of rubber latex, 5 to 15 parts by weight of a triazine compound (F), and 5 parts by weight of an ethyleneimine compound (G) 5 The heat treatment is performed after the treatment with the second treatment liquid containing up to 20 parts by weight. |