Temporary rust resisting coating composition

摘要

The present invention provides a temporary rust resisting coating composition which has excellent rust resistance after heating even at more than 600 DEG C. and which has good weldability. The temporary rust resisting coating composition of the present invention comprises (A) 10 to 25% by weight of a binder having an ignition loss of not more than 33% by weight, (B) 40 to 70% by weight of zinc powder, (C) 5 to 50% by weight of an inorganic oxide pigment which has been heated at not less than 500 DEG C. up to an ignition loss of 3% by weight; the amounts of the components (A), (B) and (C) being based on a dried film.