Title: Silver sulfide nano particle sensibilizer, its preparing method and use
Application Number: 200410009158 Application Date: 2004.05.31
Publication Number: 1704843 Publication Date: 2005.12.07
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G03C1/09,G03C1/10
Applicant(s) Name: Technical Institute of Physics and Chemistry of CA Address: 100101
Inventor(s) Name: Chen Lijuan, Li Zhi, Peng Bixian, Xu Haitao
Attorney & Agent: li bai
Abstract:
     This invention relates to AgS nm particle sensitizing agent, its preparation method and usage. A hydrophilicity polymeric compound solution, water soluble Ag salt solution, water soluble sulfur compound solution are mixed under 10-100deg.C to get the AgS nm particles, the mole ratio of the Ag salt solution and the sulfur compound solution is 1:1~1:2 when mixing them the weight percentage of the hydrophilicity polymeric compound is 1~6%, concentration of AgS nm particles is 2x0.00001~1x0.0001 mole/100g, its size is 2~15nm in the sensitizing agent. Being a chemical sensitizing agent of the silver-halide micro-crystal emulsion, the AgSnm particle-sensitizing agent can increase the sensitivity of the emulsion.
Time: 10