Chitosan oligosaccharide quaternary ammonium salt derivative and method for preparing nanometer silver through same

• Main Authors: LI XIN, WAN ZHENGKAI, ZHANG LU, YANG GUOYU, WANG CAIXIA, XU CUILIAN, FAN SUFANG, WANG ZHIMIN
• Format: Patent
• Language: English
• Published: 25.11.2015
• Subjects: CASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; DERIVATIVES THEREOF; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; POLYSACCHARIDES; POWDER METALLURGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING METALLIC POWDER

The invention provides chitosan oligosaccharide quaternary ammonium salt derivative. The chitosan oligosaccharide quaternary ammonium salt derivative is provided with chitosan oligosaccharide with an antimicrobial activity part, quaternary ammonium salt with the antimicrobial activity part and antibiosis and strong reducing property groups such as a phenolic hydroxyl group and a formyl group; reduction is conducted on a silver ammonium solution through the chitosan oligosaccharide quaternary ammonium salt derivative, and nano silver can be prepared smoothly. The synthetic chitosan oligosaccharide quaternary ammonium salt nano sliver has the high efficiency, antibiosis, plant virus resistance and other activities, and the TMV resistance activity is higher than that of chitosan oligosaccharide and chitosan oligosaccharide quaternary ammonium salt.