Compositions based on yttrium, cerium and an organic compound, and stop-off use thereof

Abstract

The present invention relates to a composition based on yttrium oxide, on a cerium-based compound and on an organic compound and its use in the field of welding as stop-off product. The composition comprises, in an aqueous medium: yttrium oxide particles; particles of a cerium-based compound: which is cerium oxide; or which is prepared by the process consisting in causing a colloidal dispersion D, which is obtained by the neutralization of an aqueous cerium nitrate solution by a basic aqueous solution, to undergo heating; an organic compound chosen from the group formed by polyvinylpyrrolidone, polyvinyl alcohol, carboxymethyl cellulose and hydroxyethyl cellulose.

Dependencies are inferred from the claim text.