Treatment composition based on pregelatinized starch and process for applying it to a metal, especially steel, surface
AssigneeUsinor
InventorsRonald Kefferstein, Lothaire Scherer
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Abstract
An aqueous composition containing at least 2% by weight of pregelatinized starch and, as an emulsion, at least 1% or vegetable wax or oil, preferably chosen from carnauba wax, jojoba oil and candelilla wax. Also a process for applying a layer of this composition and in drying it so as to obtain a dry film having; a surface density of between 1 and 2.5 g/m2. Treating a metal surface with the composition provides temporary corrosion protection and prelubrication.
Claims19
An easily cleanable aqueous composition for treating a metal surface, said composition comprising, as an emulsion, at least 2% by weight of pregelatinized starch and at least 1% of vegetable wax or oil, or at least 1% of synthetic wax or oil having a composition identical to the composition of a vegetable oil or wax.
Dependencies are inferred from the claim text.