Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Process for preparing nano-class physically developing metal clear

A nano-metal and physical technology is applied in the field of preparation of physical development cores, which can solve the problems of cumbersome operation, loss of catalytic activity of cores, poor stability of cores, etc., and achieve the effect of protecting stability.

Inactive Publication Date: 2003-02-19
ZHONGKEYIN IND SHANTOU CITY
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation method of this core has cumbersome operations, and the stability of the core is poor, and it is easy to cause flocculation or sedimentation, which makes the core lose its catalytic activity.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for preparing nano-class physically developing metal clear
  • Process for preparing nano-class physically developing metal clear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0037] Set the concentration to 5.8 x 10 -2 mol / L AgNO 3 40ml of the solution was added to 400ml of propionitrile resin and silica sol solution with a concentration of 0.5% by weight and volume percentage, wherein the concentration of propionitrile resin was 35%, 60ml, the concentration of silica sol was 30%, 100ml, and then water was added to 400ml; Stir evenly at 30°C, and the stirring speed is 200 rpm; then quickly add the concentration of 4.4 × 10 -2 mol / L of KBH 4 solution, the amount of which is AgNO 3 2 times the molar amount, continue to stir for 15 minutes, the pH of the solution is controlled at 3.5, and nucleate in a protective medium. figure 1 shown. The results obtained after the positive and negative films and the processing agent are transferred are shown in Table 1.

Embodiment 4

[0039] The preparation conditions of the metal platinum core are the same as in Example 3, and the preparation concentration of chloroplatinic acid here is 1.8 × 10 -2 mol / L, 40ml, KBH 4 The preparation concentration is 3.6 × 10 -2 mol / L, 40ml. The diameter of the prepared platinum core is 35-70nm observed under the electron microscope. The prepared positive film and negative film, and the results after transfer of the processing agent are shown in Table 1.

[0040] physical development nucleus

[0041] From the data in the table, it can be clearly seen that whether it is silver core or platinum core, the particle diameter is less than 10nm, the obtained image density is small, and the color tone is brownish yellow or yellow-red; black tone can be obtained only when the particle diameter is greater than 10nm. In addition, the protective medium also has an important effect on the size of the nuclear preparation.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

A process for preparing the nano-class physical developing metal kernels includes proportionally adding the solution of metal salt containing Ag or Pt kernel to the solution of protecting medium, reaction at 20-50 deg.C while stirring, adding reducing agent and dregulating pH value to 1.5-4.0 to obtain 10-80 nm product. Its advantages are high stability in colloidal solution and high stack density.

Description

technical field [0001] The invention belongs to a method for preparing a physical development nucleus in a silver salt diffusion transfer system, in particular to a method for preparing a nanometer metal physical development nucleus. Background technique [0002] The silver salt diffusion transfer reversal principle (referred to as the DTR principle) is described in "Photographic Silver Halide Diffusion Processes" by Andr. Rott and Edith Weyde, The Focal Press , London and New York, 1972) has been described in the book. When the silver halide photosensitive layer is exposed to light, a latent image is formed, which is chemically developed by the developer and reduced to silver to form a negative image; at the same time, the unexposed silver halide is rapidly dissolved by the silver complexing agent in the developer to form a silver complex The ions are diffused and transferred to the image-receiving layer, and under the catalysis of the physical developing nucleus of this l...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G03C8/06G03C8/28
Inventor 陈萍盛丽琴于淑芳郑德水
Owner ZHONGKEYIN IND SHANTOU CITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com