METHOD FOR PRODUCING ADHESIVE COMPOSITION, RUBBER/ORGANIC FIBER CORD COMPOSITE, AND TIRE

Provided is a method of producing an adhesive composition that can achieve excellent adhesiveness and productivity even when formalin and resorcin are not contained. A method of producing an adhesive composition for organic fiber cords comprises: adding a sodium hydroxide solution and ammonia water into a solution in which polyphenol is dissolved; and thereafter adding aldehyde having aromatic ring into the solution and dissolving the aldehyde having aromatic ring.