The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2015
Filed:
Dec. 14, 2009
Richard Buscall, Exeter, GB;
Derek Graham, Guisborough, GB;
Rory Anderson, West Brunswick, AU;
Peter Joseph Scales, Research, AU;
Paul Mulvaney, Alphington, AU;
Robert James Eldridge, Glen Waverley, AU;
Richard Buscall, Exeter, GB;
Derek Graham, Guisborough, GB;
Rory Anderson, West Brunswick, AU;
Peter Joseph Scales, Research, AU;
Paul Mulvaney, Alphington, AU;
Robert James Eldridge, Glen Waverley, AU;
Akzo Nobel Coatings International B.V., Arnhem, NL;
Abstract
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.