Synthesis of phenols functionalized nylon 6 by zinc acetate catalyst using the Mannich reaction to enhance the hydrophobic and dielectric properties was described in this paper. The structure of the phenol functionalized nylon 6 was established by FT-IR, NMR, MALDI-TOF, GPC, and DSC-TGA. The functionalized polymer has a decomposition temperature of about 400 degrees C and exhibits good thermal stability. The water contact angle measurement shows the functionalized polymer has hydrophobic nature with a contact angle of above 90 and the preliminary dielectric measurement shows the functionalized polymer has relatively low dielectric constant and loss. This thermally stable and hydrophobic polymer is potential materials for the electronic device application.