- A heat [...] wavelengths preparation method
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The invention relates to a preparation method of thermosensitive sensitizer. The preparation method is characterized in that methyl substituted phenol (metacresol, o-cresol or p-cresol) and dichloroethane have condensation reaction at the temperature of 70 to 80 DEG C, then the thermosensitive sensitizer 1,2-dimethyl phenoxyl ethane crude product with the purity of 95 to 98 percent (the main impurity is the single substituted phenoxyl ethane) is obtained in the steps of layering, continuous reaction, extraction and layering, and then the crude product is rectified to obtain the high-purity thermosensitive sensitizer. The method is simple to operate, environmentally friendly, high in yield, moderate in reaction condition and low in production cost; the extracted impurity can be used as the raw material to be continued in the reaction.
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Paragraph 0013; 0014; 0019
(2017/08/25)
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- 1. 2 - [...] ethane and the like industrial preparation method
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The invention relates to an industrial preparation method of 1,2-diphenoxyl ethane and its analog. The method comprises the following steps: continuously adding 1,2-dichloroethane to a hot reaction system comprising phenol (or methyl phenol), an acid binding agent and polyethylene glycol in a dropwise manner under normal pressure at a uniform speed to guarantee continuous escape of 1,2-dichloroethane steam from the reaction system (or continuously introducing the 1,2-dichloroethane steam into the reaction system), and stopping the addition of 1,2-dichloroethane when phenol (or methyl phenol) is completely reacted to terminate the above reaction; and post-processing to obtain a final product. The method has the advantages of thorough conversion of raw materials, and high yield.
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Paragraph 0020; 0021
(2018/04/01)
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- Organic pollutants in paper-recycling process water discharge areas: First detection and emission in aquatic environment
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In this study, eight compounds have been identified and quantified from the samples collected from paper-recycling process water discharge areas. In particular, five aryl hydrocarbons, including a novel chlorinated aryl ether, were identified for the first time as environmental pollutants. In the effluent stream, concentration levels of up to 1600 μg L-1 and 190 μg g-1 were detected in the surface water and surface sediment, respectively. The results of this study have raised concerns regarding the organic chemicals used in thermal paper and the environmental consequences of their release.
- Terasaki, Masanori,Fukazawa, Hitoshi,Tani, Yukinori,Makino, Masakazu
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- COMPOSITION, RECORDING MATERIAL, AND RECORDING SHEET
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A recording material and a recording sheet free from surface fogging and excellent in dynamic coloring sensitivity, wet heat resistance, heat resistance, light resistance, plasticizer resistance, and water resistance. A recording material comprising a composition containing at least one kind of a compound (1) and at least one kind of a compound (2) and/or at least one kind a compound (3), and a recording sheet having a recording layer formed from the recording material. Compound (1) Compound (2) Compound (3) ?in the formulae, R1, R2, R6, R7, R11, R12 indicate hydrogen atom or alkyl radical, a1-a3 integer of 1-6, n1-n3 0, 1 or 2, m1, m4 and m7 0, 1, 2, or 3. R3, R4, R8, R9 R13, R14 indicate alkyl radical or the like, m2, m3, m5, m6, m8 and m9 0, 1 or 2, Y1-Y3 Co or NRCO (R indicates hydrogen atom or the like)ü
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- Recording material and recording sheet
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The present invention provides a composition and a recording material made from the composition having an excellent dynamic sensitivity in recording as well as an excellent image stability and, particularly, having excellent resistance for heat and humidity, heat, light, plasticizer and water. The composition and the recording material include the following compounds (1), (2), and (3): wherein R1, R2, R6, R7, R11, and R12 each represents hydrogen or an alkyl group; a1 to a3 each represents an integer of 1-6; n1 to n3 each represents 0, 1 or 2; m1, m4 and m7 each represents 0, 1, 2 or 3; R3, R4, R8, R9, R13 and R14 each represents an alkyl group; m2, m3, m5, m6, m8 and m9 each represents 0, 1 or 2; and Y1 to Y3 each represents CO or NRCO (R represents hydrogen, etc.).
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- Process for producing di(aryloxy)alkane
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A process for producing a high quality di(aryloxy)alkane with a high yield by the use of readily commercially available materials, without using any particular solvent or agent and by means of a simple operation and a general apparatus is provided, which process comprises subjecting a halogenated alkane of the formula (II) wherein X and Y each represent a halogen atom and A represents a lower alkylene group, and a phenol of the formula (III) STR1 wherein R1 to R5 each are same or different, represent hydrogen, halogen, lower alkyl, lower alkoxy, carboxylic acid salt, acyl or nitro group, and may form a ring in conjunction of two adjacent groups, to condensation reaction in the presence of an alkali in an aqueous medium to form a di(aryloxy)alkane of the formula (I) STR2 and is characterized (i) by carrying out the condensation reaction in a molar ratio of the compound of the formula (II): the phenol of the formula (III): the alkali in terms of monovalent base of 1:1.5 to 3.0:1.5 to 3.0; or (ii) by carrying out the condensation reaction of the above (i) and adjusting the quantity of the aqueous medium phase after completion of the reaction can be 35% or less based on the oily phase; or (iii) by carrying out the condensation reaction of the above (i), feeding at least the alkali among the reaction components with progress of the reaction and adjusting the quantity of the aqueous medium phase as described in the above (ii).
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