Sollac

Usinor

Lothaire W Scherer

Ronald Kefferstein

Philippe Antoine

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/m . Treating a metal surface with the composition provides temporary corrosion protection and prelubrication.

Treatment composition based on pregelatinized starch and process for applying it to a metal, especially steel, surface

The invention concerns a composition useful for providing temporary protection against corrosion to metal surfaces comprising an oil-in-water emulsion characterised in that said emulsion contains in its aqueous phase at least a compound of general formula (I) in which the groups R, R,and R,represent independently of one another a hydrogen atom, a C,-C,alkyl group, a C,-C,halogenoalkyl group with the halogen being chlorine, bromine, iodine or fluorine, a C,-C,cycloalkyl group, a carboxylic function or a C,-C,carboxyalkyl group; n is a whole number varying from 1 to 3; and X represents an oxygen or sulphur atom in the form of one of its soluble salts. The invention also concerns a method for preparing said composition, its method of application to the surface of metal part and the resulting part.

Composition for temporarily protecting metal components from corrosion, its processes of preparation and of application, and metal components obtained from this composition

The subject of the invention is a process for separating silicic compounds from baths for cleaning steel substrates containing iron ions and silicic compounds, consisting of the following stages:

Growing community of inventors

Pos-sur-Mer, France

Lothaire W Scherer