Production of fatty acid silver salt for photosensitive heat display imaging material

A technology of fatty acid and silver salt, which is applied in the field of preparation of fatty acid silver salt, can solve problems such as aggregation and bubbles of fatty acid silver microcrystals, and achieve the effects of simple process, convenient operation, and improved clarity

Active Publication Date: 2006-03-15
BAODING LUCKY FILM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a kind of preparation method of the fatty acid silver salt that is used in photosensitive thermographic imaging material, to solve the bubble and fatty acid silver crystallite aggregation problem produced in the fatty acid silver salt preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of silver behenate

[0038] (1) Crystal growth process of organic acid silver

[0039] Add 1153ml of deionized water and 102g of behenic acid into a reaction vessel equipped with a stirrer, and add 53ml of 5N NaOH solution within 5 minutes under full stirring at 82°C at a flow rate of 10.6ml / min, and react for 60 minutes , cooled to 78°C, added 292ml of tert-butanol, and stirred evenly to obtain sodium behenate solution B.

[0040] In a closed reactor with a negative pressure of 0.07Mpa, add 1440ml deionized water, 64ml tert-butanol, 75ml 0.7N silver nitrate solution, adjust the pAg to 1.5, and keep the temperature in the reactor at 25°C. Under the condition of full stirring, double-inject 0.7N silver nitrate solution A at 10°C and 0.2N sodium behenate solution B at 78°C, the flow rate of silver nitrate solution A is 6ml / min, and the addition time is 40 minutes. The flow rate of sodium behenate solution B is 21.6ml / min, and the addition time is 60 minutes....

Embodiment 2

[0046] Preparation of silver stearate

[0047] (1) Crystal growth process of silver stearate

[0048] Add 1000ml of deionized water and 110g of stearic acid into a reaction vessel equipped with a stirrer, and add 53ml of 5N NaOH solution within 5 minutes under full stirring at 80°C at a flow rate of 10.6ml / min, and react for 50 minutes , cooled to 70°C, added 290ml of tert-butanol, and stirred evenly to obtain sodium stearate solution B.

[0049] In a closed reactor with a negative pressure of 0.01Mpa, add 1400ml of deionized water, 60ml of tert-butanol, and 80ml of 0.7N silver nitrate solution, adjust the pAg to 1.3, and keep the temperature in the reactor at 25°C. Under sufficient stirring conditions, double-inject 0.7N silver nitrate solution A at 10°C and 0.2N sodium stearate solution B at 80°C, the flow rate of silver nitrate solution A is 6ml / min, and the addition time is 40 minutes. The flow rate of sodium stearate solution B is 21.6ml / min, and the addition time is 60...

Embodiment 3

[0055] Preparation of Arachidic Silver

[0056] (1) Crystal growth process of silver arachidic acid

[0057] Add 1000ml of deionized water and 110g of arachidic acid into a reaction vessel equipped with a stirrer, and add 53ml of 5N NaOH solution within 5 minutes under full stirring at 80°C at a flow rate of 10.6ml / min, and react for 50 minutes. Cool down to 70°C, add 290ml of tert-butanol, and stir evenly to obtain sodium arachidic acid solution B.

[0058] In a closed reactor with a negative pressure of 0.09Mpa, add 1400ml of deionized water, 60ml of tert-butanol, and 80ml of 0.7N silver nitrate solution, adjust the pAg to 1.3, and keep the temperature in the reactor at 25°C. Under the condition of full stirring, double-inject 0.7N silver nitrate solution A at 10°C and 0.2N sodium arachidate solution B at 80°C. The flow rate of silver nitrate solution A is 6ml / min, and the addition time is 40 minutes. The flow rate of sodium bicarbonate solution B is 21.6ml / min, and the ad...

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Abstract

A method for preparing fatty acid silver salt used to produce photosensitive heat development imaging material includes crystal growing process of fatty acid silver salt, superflitering process, concentrating process, redispersing process of fatty acid silver salt. . The abovesaid preparing processes are carried out in closed container under vacuum condition with internal negative pressure value of 0.01 - 0.09 Mpa in closed container.

Description

technical field [0001] The invention relates to a preparation method of fatty acid silver salt, in particular to a preparation method of fatty acid silver salt used in photosensitive thermographic imaging materials. Background technique [0002] The photosensitive thermographic imaging material can be used in the field of microfilm, printing technology and digital medical imaging. In recent years, the most important and most commercially valuable application of photosensitive thermal imaging materials is in the field of digital medical imaging, as an ideal material for recording digital medical images matched with image output devices such as medical laser dry printers. The characteristic of photosensitive thermographic imaging material is that it develops by heating without processing liquid medicine, and does not produce waste materials and waste liquid during processing. At present, this photosensitive thermal imaging material can obtain high-quality diagnostic image pho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03C1/498C07C51/41
Inventor 邹竟
Owner BAODING LUCKY FILM
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