Storage-stable, single-component concentrate, production and use thereof for the production of cathodically depositable electrocoating lacquer baths

A concentrate suitable for producing and replenishing cathodically depositable electrocoating lacquer baths, comprising:

• one or more cathodically depositable binders, one or more organic solvents, one or more pigments, together with water,
• wherein the solids content thereof is 35 to 50 wt. %, at a weight ratio of pigment to binder of 0.01:1 to 0.4:1, the viscosity thereof is 100 to 500 mPa.cndot.s, measured by rotational viscosimetry at 20 C and a shear gradient of 150 s.sup.-1,
• and the organic solvent content thereof is 0 to below 20 wt. % relative to solids content,
• which concentrate is produced by a process of mixing an aqueous dispersion of one or more of the cathodically depositable binders with a preparation of one or more of the pigments, one or more water-miscible organic solvents and water;
• wherein the aqueous dispersion has a viscosity of 500 to 2,000 mPa.cndot.s and the preparation has a viscosity of 50 to 10,000 mPa.cndot.s, the viscosities being measured by rotational viscosimetry at 20 C and a shear gradient of 150 s.sup.-1, and
• wherein the viscosities of the aqueous dispersion and preparation are greater than the viscosity of the concentrate.