| 摘要 |
A process for preparing a polyester fiber composite material having an excellent bonding property to rubber, a proper softness and a high resistance to fatigue, comprises the steps of first impregnating a polyester fiber material much as fabric, cord or thread, with a first treating liquid containing (A) a polyepoxide compound having two or more epoxy groups per molecule of the compound, (B) a blocked polyisocyanate compound, for example, an addition product of a polyisocyanate compound with a phenol, tertiary alcohol or aromatic secondary amine compound and (C) a rubber latex such as vinyl pyridine-styrene-butadiene terpolymer latex; first drying and heat treating the first impregnated material at a temperature of, preferably, 180 DEG C. or higher but lower the melting point of the polyester fiber material; second impregnating the first impregnated and heat-treated material with a second treating liquid containing a resorcinformaldehyde reaction product, a rubber latex and, optionally, an ethylene urea compound of the formula <IMAGE> wherein R is an aromatic or aliphatic hydrocarbon residue and n is 0.1 or 2, and; second drying and heat-treating the second impregnated material at a temperature of, preferably, 120 DEG C. or more but lower than the melting point of the polyester fiber material.
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