Toning promoter for preparing diazo positive image bromide paper
A photosensitive paper and accelerator technology, applied in the field of toning accelerators, can solve problems such as difficulty in purchasing, slow development of ammonia fumigation, and dull color tone, and achieve long ammonia fumigation time, correction of color concentration, and shortening of color development time Effect
Inactive Publication Date: 2006-09-06
武汉瑞阳化工有限公司
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- Description
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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 comprises: 5-55% caffeine, 5-25% loop thiourea, and 20-75% alkyl urea. This invention overcomes the defect in prior art, improves result and shortcuts time, and can obtain the request one-time at low temperature.
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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