| abstract |
[PROBLEMS] To provide a transmission belt and a conveyor belt, which are made of chloroprene rubber as a base material and embedded with glass fibers for reinforcing rubber, with good balance of durability such as heat resistance, water resistance and oil resistance, and in addition, chloroprene. Provided are a glass fiber coating coating solution that provides a coating layer having excellent adhesion to rubber, and a rubber reinforcing glass fiber using the same. A monohydroxybenzene-formaldehyde condensate (A) is formed on a rubber reinforcing glass fiber 3 embedded in a transmission belt having chloroprene rubber as a base material, wherein a plurality of glass fiber filaments are bundled. A glass fiber for rubber reinforcement comprising a coating layer containing a vinylpyridine-styrene-butadiene copolymer (B) and an acrylonitrile-butadiene copolymer (C). [Selection] Figure 1 |