Metal Fillers
”Fine metal particles in an organic polymer can be useful as antibacterial agent, antifungal agent, oxidation catalyst, reaction catalyst (such as an isomerization catalyst, hydrogenation catalyst, hydroformylation catalyst, hydrosilylation catalyst and the like), optical material and electronic material.” (Akikazu and Odani, US Patent 7,645,811, 1/12/2010) More on Metal Fillers
More on Metal Fillers Because “organic polymers and inorganic substances are poorly compatible with each other in general, it is difficult to attain homogeneous dispersion throughout in a material. Thus, in most cases, especially the physical method, the fine metal particles with the size from about several nanometers to several ten nanometers have been difficult to be dispersed in forming the conventional complex of fine metal particles and an organic polymer, and thus properties of the fine metal particle cannot be utilized effectively.” “One approach is an intermediate product with metal ions which are later reduced to metal particles. (1) producing super lattice structure having a distinct structure by way of absorbing gold colloid and a cationic polymer alternatively, (2) physically synthesizing a polymer-metal nanoparticle complex by (i) preparing a metal nanoparticle through vacuum deposition, (ii) trapping the metal nanoparticle under a low temperature, and then (iii) stabilizing the metal nanoparticle by using the polymers, and (3) chemically synthesizing a polymer-metal nanoparticle complex by reducing a metal ion such as a gold ion, platinum ion, palladium ion, rhodium ion or iridium ion, using a reducing agent in the presence of a polymer stabilizer such as poly(N-vinyl-2-pyrrollidone)(PVP) or the like, (4) and other methods.” (Akikazu and Odani, US Patent 7,645,811, 1/12/2010)
Recent US Patents
To go to the text version of the patent, click on US Patent Number Search and enter the patent number in the search box. 1/12/2010 US Patent 7,645,811 Polymer with Dispersed Fine Metal Particles, Process for Producing Same, Metal Ion-containing Polymer for Use in the Production, and Process for Producing Same
Recent Journal Articles
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Review Articles
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Editor's Notes
As the literature is reviewed, and items of interest concerning this topic are found. These may be added in an abbreviated form with the reference. Readers and contributors are invited to add their own notes. Contributors may add them directly and other readers can simply send their notes to the editor, Roger Corneliussen at rcorneliussen@4spe.org. He may edit and add them to this page at his discretion.