Process for preparing dispersion additives useful for corrosion protective coatings
AssigneeCouncil of Scientific and Industrial Research
InventorsRadhakrishnan Subramaniam, Vishwambharan Vattoliparambil
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Abstract
The present invention relates to modification of dispersions using nano-paticulate additives having appropriate composition, which can be used for coatings for sheets/substrates made of steel, to prevent corrosion due to saline water.
Claims14
A process for the preparation of dispersion additives useful for corrosion protective coatings, the process comprising which comprises dissolving a polymer having ether or amine groups in a solvent, adding a metal salt dissolved separately in the same solvent in desired proportion in order to form a complex by digestion of the polymer and the metal salt, reacting the complex with an alkali to form a colloidal precipitate, separating the precipitate from the reaction mixture, drying the separated precipitate and grinding to fine powder to form a dispersion additive useful for corrosion protective coating.
Dependencies are inferred from the claim text.