METHOD FOR PRODUCING FIBER FOR REINFORCING RUBBER

摘要

PROBLEM TO BE SOLVED: To provide a method for producing an excellent fiber for reinforcing rubber without using an epoxy compound in bonding a synthetic fiber to the rubber.

SOLUTION: The method for producing the fiber for reinforcing the rubber is carried out by treating the fiber with a pretreatment agent containing an amine derivative having a hydroxy group, a blocked polyisocyanate and a rubber latex and then treating the treated fiber with a post-treatment agent containing a blocked polyisocyanate and a rubber latex. Furthermore, all the nitrogen sites constituting the amine derivative are preferably tertiary amines and the amine derivative is preferably an alkylene oxide adduct of an amine. The molar ratio of the nitrogen to the hydroxy group constituting the amine derivative is preferably (1:2) to (1:3).

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