Abstract: A method for sealing a zinc-aluminum pseudo alloy spray coating, which comprises forming a zinc-aluminum pseudo alloy spray coating on a substrate to be spray-coated, and then sealing the surface of the coating with a chromium-free sealing material containing phosphoric acid in an amount of from 0.1 to 7 wt %.

Abstract: A method for forming a metal spray coating, which comprises coating on a substrate to be metal-sprayed, one pack type cold self-crosslinking resin aqueous dispersion containing insoluble solid particles having an average particle size of from 5 to 200 .mu.m, to form a primer layer having a rough surface, and then spraying a metal on the primer layer.

Abstract: A pretreating composition for metal spraying, which comprises a synthetic resin binder and from 25 to 400% by volume, based on the resin binder, of particles having a particle size of from 5 to 200 .mu.m.

Abstract: A cathodic electrodeposition coating composition which comprises:(A) 100 parts by weight of an amine-unsaturated carboxylic acid adduct of epoxidized polybutadiene having a number average molecular weight of from 500 to 10,000 and containing from 70 to 200 mmol of a tertiary amino group, from 20 to 200 mmol of an .alpha.,.beta.-unsaturated monocarboxylate group and from 200 to 2,000 mmol of a carbon-carbon double bond, per 100 g of the resin;(B) from 20 to 200 parts by weight of an addition reaction product of (a) 1 mol of an epoxy resin containing at least two epoxy groups per molecule, and (b) from 1.5 to 2.0 mol of an .alpha.,.beta.-unsaturated monocarboxylic acid;(C) from 5 to 50 parts by weight of an addition reaction product of (a) 1 mol of an epoxy resin containing at least two epoxy groups per molecule, and (b) a mixture of from 0.5 to 1.5 mol of an .alpha., .beta.-unsaturated monocarboxylic acid and from 0.5 to 1.