54914-85-1Relevant articles and documents
A heat [...] wavelengths preparation method
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Paragraph 0013; 0014; 0019, (2017/08/25)
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.
COMPOSITION, RECORDING MATERIAL, AND RECORDING SHEET
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, (2008/12/05)
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
Organic pollutants in paper-recycling process water discharge areas: First detection and emission in aquatic environment
Terasaki, Masanori,Fukazawa, Hitoshi,Tani, Yukinori,Makino, Masakazu
, p. 53 - 59 (2008/03/14)
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.