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Multifunctional AA and NVP co-polymer argentic salt used for photothermography, and preparation method thereof

A technology of copolymer and silver salt, applied in photothermographic system, silver salt sensitizer, etc., to achieve the effect of clean processing equipment, mild reaction conditions, and easy control of product composition

Inactive Publication Date: 2011-03-30
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The entire photosensitive and thermal imaging process is very complicated

Method used

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  • Multifunctional AA and NVP co-polymer argentic salt used for photothermography, and preparation method thereof
  • Multifunctional AA and NVP co-polymer argentic salt used for photothermography, and preparation method thereof
  • Multifunctional AA and NVP co-polymer argentic salt used for photothermography, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In a 250mL stirred glass reactor, add the reaction material, which consists of: 1mL of acrylic acid, 10mL of N-vinylpyrrolidone, 10mL of deionized water, 0.06g of ammonium persulfate, and 4mL of isopropanol. Start stirring, and at a rotation speed of 300 r / min, heat to 80° C. with a water bath, and react for 3 hours to obtain a copolymer of acrylic acid and N-vinylpyrrolidone. Cool naturally to 20-30°C, add sodium hydroxide with a concentration of 0.15g / mL to neutralize the reaction system to pH 7-8; mix 50mL of silver nitrate aqueous solution with a concentration of 2mol / L and 24mL of ethanol and add to the prepared In the obtained copolymer; stirred and reacted at 25°C for 1 hour to obtain a silver salt of acrylic acid (AA) and N-vinylpyrrolidone (NVP) copolymer with a molecular weight of 60,000 to 65,000, and the copolymer was measured by a rotary viscometer The viscosity of silver salt is 300mpa·s.

[0025] Take 10 mL of the above-prepared acrylic acid (AA) and N-v...

Embodiment 2

[0027] In a 250mL stirred glass reactor, add the reaction material, which consists of: 1mL of acrylic acid, 5mL of N-vinylpyrrolidone, 6mL of deionized water, 0.06g of ammonium persulfate, and 2mL of isopropanol. Stirring was started, and at a rotation speed of 250 r / min, the mixture was heated to 70° C. in a water bath, and reacted for 4 hours to obtain a copolymer of acrylic acid and N-vinylpyrrolidone. Cool naturally to 20-30°C, add sodium hydroxide with a concentration of 0.15g / mL to neutralize the system to pH 7-8; mix 50mL of silver nitrate aqueous solution with a concentration of 2mol / L and 12mL of ethanol and add it to the prepared In the copolymer; stirred and reacted at 25°C for 1.5 hours to obtain a silver salt of acrylic acid (AA) and N-vinylpyrrolidone (NVP) copolymer with a molecular weight of 50,000-55,000, and its viscosity was measured to be 280mpa·s.

[0028] Take 10 mL of the above-prepared acrylic acid (AA) and N-vinylpyrrolidone (NVP) copolymer silver salt...

Embodiment 3

[0030] In a 250mL stirred glass reactor, add the reaction material, which is composed of: 1mL of acrylic acid, 15mL of N-vinylpyrrolidone, 24mL of deionized water, 0.23g of potassium persulfate, 6mL of isopropanol, and start stirring. At 200r / min, heat to 60°C with a water bath, and react for 5 hours to obtain a copolymer of acrylic acid and N-vinylpyrrolidone. Cool naturally to 20-30°C, add 0.15g / mL sodium hydroxide to neutralize the reaction system to pH 7-8; mix 50mL of silver nitrate aqueous solution with a concentration of 2mol / L and 6mL of ethanol, add to the prepared In the obtained copolymer; stirring and reacting at 25° C. for 2 hours, a silver salt of acrylic acid (AA) and N-vinylpyrrolidone (NVP) copolymer having a molecular weight of 30,000 to 35,000 was obtained, and its viscosity was measured to be 220 mpa·s.

[0031]Take 10 mL of the above-prepared acrylic acid (AA) and N-vinylpyrrolidone (NVP) copolymer silver salt solution into a 200 mL glass reactor, add 80 m...

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Abstract

The invention discloses an AA and NVP copolymer silver salt for photothermographic imaging and a preparation method thereof. The copolymer silver salt is composed of a constitutional unit shown by A and a constitutional unit shown by B, and the preparation method comprises the following procedures: the AA and NVP copolymer is prepared by a liquid phase method; the pH value of a reaction system is adjusted by sodium hydroxide aqueous solution at room temperature; and a mixture of silver nitrate and ethanol is added to the AA and NVP copolymer system to obtain the AA and NVP copolymer silver salt. The silver salt and the preparation method have the advantages that the prepared AA and NVP copolymer silver salt has multifunctionality when being used in the photothermographic imaging process, and the process of the preparation method is simple, the product composition is easily controlled and the reaction condition is mild.

Description

technical field [0001] The invention relates to a silver salt of acrylic acid (AA) and N-vinylpyrrolidone (NVP) copolymer for photosensitive thermal imaging and a preparation method thereof, which belongs to the preparation technology of organic copolymer silver salt. Background technique [0002] Photosensitive thermographic imaging material is a special photosensitive coating coated on a polyester film base, mainly composed of photosensitive ultrafine silver halide particles, non-photosensitive long-chain organic acid silver, reducing agent, toner, polymer-based adhesive Mixture, anti-fogging agent, stabilizer, spectral sensitizer and many other basic components with special structure and specific function. The entire photosensitive and thermal imaging process is very complicated. Judging from the simplified reaction mechanism proposed so far, this photosensitive thermographic imaging material first generates latent image centers on the photosensitive ultrafine silver ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03C1/494G03C1/498
Inventor 王虹吕丽云苏辉史玉立
Owner TIANJIN UNIV