Toning promoter for preparing diazo positive image sensitive paper
A technology of photosensitive paper and accelerator, applied in the field of toning accelerator, can solve the problems of difficulty in purchasing, slow development of ammonia fumigation, dull color tone, etc., and can solve the problem of long ammonia fumigation time, correction of color concentration, and shortening of color development time. Effect
Inactive Publication Date: 2009-11-18
武汉瑞阳化工有限公司
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the diazo positive image photosensitive paper made by the above materials and methods generally has the disadvantages of not bright colors and slow ammonia smoke development.
In order to solve these problems, many scientific and technological workers at home and abroad have conducted some research and found that some substances can catalyze the coupling reaction of the two-component diazo positive image photosensitive paper, but these substances are expensive and difficult to buy, and some of them can be used after use. It will greatly shorten the shelf life of diazo photosensitive paper, so many substances cannot be used in actual industrial production
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0038] Accurately weigh 5g of coffee pharynx, 3g of ethylenethiourea, 15g of diethylurea, and 1g of tartaric acid, and mix them uniformly in a blender to obtain the substance of the present invention.
Embodiment 2
[0039] Example 2: Accurately weigh 8g of caffeine, 12g of dimethylurea, 6g of thiourea, 2g of tartaric acid, and 4g of 2-imidazolidinone, put them into a stirring mixer and mix evenly to obtain the substance of the present invention.
Embodiment 3
[0040] Embodiment 3: Accurately weigh 1 g of theophylline, 15 g of bis(N, N-methylbutyl) urea, 2 g of citric acid, and 5 g of 2-imidazolidinone, put into a stirring mixer and mix evenly to obtain the substance of the present invention .
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The invention relates to a toning accelerator for preparing photosensitive materials, in particular to a toning accelerator for preparing diazo positive photosensitive paper. It contains 5%-55% caffeine, 5%-25% cyclic thiourea and 20%-75% alkyl urea. It solves the disadvantages that the diazo positive photosensitive paper made of existing photosensitive materials generally has a dull color tone and slow development of ammonia smoke. The invention has the obvious effects of correcting the color concentration, promoting color development and shortening the color development time, and its effect is more prominent under low temperature conditions, and can obtain the required image at one time, which solves the problem of long ammonia fumigation time under low temperature conditions. Light hair problem.
Description
technical field [0001] The invention relates to a toning accelerator for preparing photosensitive materials, in particular to a toning accelerator for preparing diazo positive photosensitive paper. Background technique [0002] Diazo positive photosensitive paper is a kind of drawing reproduction material widely used in construction, mechanical processing and other industries. Existing diazonium just like photosensitive paper is generally made by coating a layer of photosensitive material on the paper. ) and 2,3-dihydroxynaphthalene-6-sodium sulfonate and a diazo component and a coupling component are prepared by coupling reaction. The above photosensitive material has the advantages of simple preparation process and low manufacturing cost. However, the diazo positive image photosensitive paper made by the above-mentioned materials and methods generally has the disadvantages that the color tone is not bright, and the development of ammonia smoke is slow. In order to solve...
Claims
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IPC IPC(8): G03F7/016
Inventor 万洪
Owner 武汉瑞阳化工有限公司
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