Patent ID: 7319127

Claim:
Nano-sized metal particles or their salts stabilized by using chain-end functionalized polymer matrices with molecular weight of 1,000˜100,000, selected from the group consisting of the following formulas 1˜5, wherein, R 1 and R 2 are hydrogen and methyl group or t-butyl group; X 1 and Y 1 are independently carboxyl group, hydroxyl group, sulfonic acid group, or phthalic anhydride group; and n is an integer of 10 to 5,000, wherein, R 3 and R 4 are hydrogen or methyl group; X 2 and X 3 are hydroxyl group, carboxyl group, sulfonic acid group, thiol group, amine group, or phthalic anhydride group; and m is an integer of 20 to 10,000, and Formula 5 wherein, X 4 is hydroxyl group, amine group; Y 2 is hydroxyl group, carboxyl group, sulfonic acid group, or phthalic anhydride group; A 1 is a styrenic monomer; B 1 is methyl methacrylate, or diene monomer; and, o and p are each an integer of 10 to 5,000.