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AssigneeNational Taiwan University
InventorsJiang-Jen Lin, Wei-Cheng Tsai, Yen-Chi Hsu, Wen-Hsin Chang
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The present invention discloses a polymeric polyamine which can be produced by polymerizing polyoxyalkylene-amine and a linker. The linker can be anhydride, carboxylic acid, epoxy, isocyanate or poly(styrene-co-maleic anhydride) copolymers (SMA). The present invention also discloses a method for stabilizing the Ag nanoparticles with polymeric polyamine. The polymeric polyamine serving as a stabilizer or dispersant is mixed with a water solution of silver salt and then a reducer is provided to reduce the silver ions and form an organic or a water solution of Ag nanoparticles. Water or solvent of this solution can be further removed through a heating, freezing or decompression process, and thus solid content of the solution can be increased. The concentrated solution also can be diluted to obtain a stable dispersion without aggregation.
A high-solid-content solution of Ag nanoparticles, comprising a polymeric polyamine, silver and a solvent, wherein the polymeric polyamine comprises a polyoxyalkylene-amine and a linker linking with an amino end of the polyoxyalkylene-amine, wherein polyoxyalkylene-amine has a molecular weight of 200-10,000 and the linker is selected from the group consisting of anhydride, carboxylic acid, glycidyl, epoxide, isocyanate, diisocyanate, maleic anhydride and maleated polystyrene;
A method for stabilizing Ag nanoparticles, comprising the steps of:
Dependencies are inferred from the claim text.