▎ 摘　　要

NOVELTY - A shop primer comprises a component A containing alcohol-soluble resin, rheological additive, silane coupling agent, filler, zinc powder and solvent, and a component B containing ethyl polysilicate and ethanol. The filler present in component A, comprises nano ferrophosphorus powder, carbon nano tube, graphene and a functional antirust filler selected from phosphate, tripolyphosphate, borate and/or silicate. USE - Shop primer is used for coating weld beads, during welding process. ADVANTAGE - The shop primer when used in welding process, enables to reduce zinc fog and the number of air bubbles and micro-holes in the weld bead. The coating formed using the shop primer, has enhanced corrosion resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation of shop primer which involves: a) preparing component A by mixing and dispersing alcohol-soluble resin, solvent and optional dispersant, followed by adding a rheological additive which is then mixed and dispersed, then adding optional defoaming agent and silane coupling agent, mixing and dispersing it, then adding filler and zinc powder, mixing and dispersing it; b) preparing component B by uniformly mixing ethyl polysilicate and ethanol. method of workshop primer.