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Self-degradation developing agent and preparation method thereof

A developer, self-degrading technology, applied in photography, opto-mechanical equipment, photographic plate making process of pattern surface, etc., can solve the problems of reduced developer performance, poor degradation performance, insufficient metabolic absorption capacity, etc., and achieves a good market. The effect of promoting value

Pending Publication Date: 2020-02-28
珠海茂逸复印机耗材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a self-degradable developer and its preparation method to solve the problems of poor degradation performance, insufficient metabolism and absorption capacity in the body, and reduced usability of the developer in the above-mentioned background technology.

Method used

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  • Self-degradation developing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] see figure 1 , The present invention provides a technical solution: a self-degradable developer consisting of L-lactic acid aqueous solution, stannous isooctanoate, polyvinyl alcohol, ethyl acetate, and toluene.

[0022] A preparation method of a self-degradable developer, the preparation method is as follows:

[0023] Step 1: In the three-necked flask, add L-lactic acid aqueous solution, evaporate the water in the solution under reduced pressure, add zinc oxide powder under the protection of argon, stir to disperse evenly, raise the temperature to 120°C, and reduce the pressure to 10Pa , and then heated up to 200°C to distill lactide;

[0024] Step 2: crystallize with toluene and ethyl acetate, rinse and dry with anhydrous ether, and finally dry in vacuum to obtain L-lactide;

[0025] Step 3: Put the L-lactide prepared in Step 2 into a polymerization tube, add 0.03% of the catalyst stannous isooctanoate, replace the air in the polymerization tube with argon, vacuum s...

Embodiment 2

[0029] see figure 1 , The present invention provides a technical solution: a self-degradable developer consisting of L-lactic acid aqueous solution, stannous isooctanoate, polyvinyl alcohol, ethyl acetate, and toluene.

[0030] A preparation method of a self-degradable developer, the preparation method is as follows:

[0031] Step 1: In the three-necked flask, add L-lactic acid aqueous solution, evaporate the water in the solution under reduced pressure, then add zinc oxide powder under the protection of argon, stir to disperse evenly, raise the temperature to 130°C, and reduce the pressure to 13Pa , and then heated up to 210°C to distill lactide;

[0032] Step 2: crystallize with toluene and ethyl acetate, rinse and dry with anhydrous ether, and finally dry in vacuum to obtain L-lactide;

[0033] Step 3: Put the L-lactide prepared in Step 2 into a polymerization tube, add 0.05% catalyst stannous isooctanoate, replace the air in the polymerization tube with argon, vacuum sea...

Embodiment 3

[0037] see figure 1 , The present invention provides a technical solution: a self-degradable developer consisting of L-lactic acid aqueous solution, stannous isooctanoate, polyvinyl alcohol, ethyl acetate, and toluene.

[0038] A preparation method of a self-degradable developer, the preparation method is as follows:

[0039] Step 1: In the three-necked flask, add L-lactic acid aqueous solution, evaporate the water in the solution under reduced pressure, add zinc oxide powder under the protection of argon, stir to disperse evenly, raise the temperature to 140°C, and reduce the pressure to 16Pa , and then heated up to 220°C to distill lactide;

[0040] Step 2: crystallize with toluene and ethyl acetate, rinse and dry with anhydrous ether, and finally dry in vacuum to obtain L-lactide;

[0041] Step 3: Put the L-lactide prepared in Step 2 into a polymerization tube, add 0.07% of the catalyst stannous isooctanoate, replace the air in the polymerization tube with argon, vacuum s...

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Abstract

The invention discloses a self-degradation developing agent. The developing agent is prepared from L-lactic acid aqueous solution, stannous iso-octoate, polyvinyl alcohol, ethyl acetate and methylbenzene. The invention further discloses a preparation method of the self-degradation developing agent. The method comprises steps that L-lactic acid aqueous solution is added into a three-neck bottle, the water in the solution is distilled off under reduced pressure, zinc oxide powder is added under the protection of argon, stirring is performed to achieve uniformly dispersion, and heating, decompressing and heating to distill off lactide are performed; methylbenzene and ethyl acetate are made to crystallize, leaching and drying and finally vacuum drying are performed to obtain the L-lactide. Thedeveloping agent is advantaged in that the developing agent prepared from the L-lactic acid aqueous solution, the stannous iso-octoate, the polyvinyl alcohol, the ethyl acetate and the methylbenzenehas an adjustable biodegradation speed and can be metabolized and absorbed in vivo, a degraded product has no side effect on an organism, and the developing agent has a good market popularization value.

Description

technical field [0001] The invention belongs to the technical field of developers, in particular to a self-degradable developer and a method for preparing the self-degradable developer. Background technique [0002] A drug that makes the latent image produced by the exposure of the photosensitive material into a visible image. The process of producing an image is called development. Black and white development is to reduce the latent image silver halide grains produced after exposure to a metallic silver image, AgBr+developer→Ag↓+developer oxide+Br- and color development, in addition to the above reactions, The developer oxidizes and reacts with the coupler of the emulsion layer to form an organic dye. Commonly used black and white developers are p-aminophenol sulfate (Metol), hydroquinone (Guinoni), etc.; commonly used color developers are CD-2, CD-3, CD-4, etc., in use , developer and protective agent, accelerator, inhibitor etc. are made into developing solution and use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03F7/32
CPCG03F7/325G03F7/32
Inventor 杨昀
Owner 珠海茂逸复印机耗材有限公司