Aqueous dispersions of silver particles
AssigneeAkzo Nobel Coatings International B.V.
InventorsRichard Buscall, Derek Graham, Rory Anderson, Peter Joseph Scales, Paul Mulvaney, Robert James Eldridge
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AssigneeAkzo Nobel Coatings International B.V.
InventorsRichard Buscall, Derek Graham, Rory Anderson, Peter Joseph Scales, Paul Mulvaney, Robert James Eldridge
Estimating the term…
A method of preparing an aqueous dispersion comprising silver particles of mean diameter from 0.5 to 25 nm by weight and an aqueous carrier liquid, including the steps of i) providing a mixture comprising at least one silver salt, aqueous carrier liquid and a stabiliser for the particles ii) contacting the mixture with a non-ionic or covalent reducing agent to form a reaction mixture iii) causing the at least one silver salt to react with the reducing agent to form a dispersion comprising silver particles and acid wherein step iii) is partly or completely performed in the presence of anion exchange resin whereby the acid is exchanged for a hydroxide ion from the resin and/or is sorbed by the resin.
1) A method of preparing an aqueous dispersion comprising silver particles of mean diameter from 0.5 to 25 nm by weight and an aqueous carrier liquid, the method including the steps of
17) An acid-free aqueous dispersion of silver particles produced by a method including the steps of
Dependencies are inferred from the claim text.