Modified Naturally-Derived Colorants For Phase Change Ink Applications
申请人:XEROX CORPORATION
公开号:US20140155625A1
公开(公告)日:2014-06-05
A modified naturally-derived colorant comprising a naturally-derived colorant that is modified with an aliphatic quaternary ammonium salt, an aromatic quaternary ammonium salt, or a mixture or combination thereof. The modified naturally-derived colorant is compatible with phase change ink vehicles.
Bromamine-B/PdCl<sub>2</sub> is an Efficient System for the Synthesis of Anthranilic Acids from Indoles and Indigos
作者:C. H. Vinod Kumar、K. N. Shivananda、C. Nagu Raju、R. V. Jagadeesh
DOI:10.1080/00397910903457274
日期:2010.11.3
A convenient method has been developed for the conversion of indoles and indigos into anthranilic acids in good to excellent yields using a bromamine-B/PdCl2 system. The general process utilizes our efficient method for the oxidation of indoles and indigos in alkaline (pH 12) acetonitrile/water (1:1) at 60 °C.
已经开发出一种使用溴胺-B/PdCl2 系统将吲哚和靛蓝转化为邻氨基苯甲酸的简便方法,收率非常好。一般工艺利用我们的有效方法在 60 °C 下在碱性 (pH 12) 乙腈/水 (1:1) 中氧化吲哚和靛蓝。
Catalytic Spectrophotometric Determination of Ultra Trace-level Copper(II) with Indigo Carmine
作者:H.L. Zheng、W. Fan、W.Y. Xie、F.Y. Ji、M.Z. Tan、C. Yang
DOI:10.14233/ajchem.2013.15068
日期:——
In this paper, a novel kinetic spectrophotometric method for the determination of ultra trace Cu(II) was developed. This method was based on catalytic action of Cu(II) on the oxidation of indigo carmine by ammonium persulfate in Na2B4O7-HCl buffer solution (pH = 9.09) and in presence of the surfactant-TritonX-100. Effects of some factors on the reaction speed were investigated in this study. It was observed that the concentration of Cu(II) was linearly correlating to DA in the range of 2.0 × 10-10-1.6 × 10-9 g/mL for Cu(II) in this method. The detecting limit of the proposed method was 1.8 × 10-11 g/mL. This system was a first-order reaction for Cu(II). The apparent rate constant was 3.19 × 10-4 s-1 and the apparent activation energy was 112.5 kJ/mol in this system. Most of the foreign ions did not interfere with the determination and the interferences of Fe(III) and Al(III) could be masked by F–. The proposed method was applied to the determination of ultra trace-level copper(II) in real samples with satisfactory results.
Highly sensitive and selective bioluminescence based ozone probes and their applications to detect ambient ozone
作者:Younseok Nam、Beom Seok Kim、Injae Shin
DOI:10.1039/c5cc08622a
日期:——
Highly selective and sensitive bioluminescence-based ozone probes were developed and applied to measure ozone concentrations in environmental samples.
高度选择性和敏感的生物发光臭氧探针已经被开发并应用于测量环境样品中的臭氧浓度。
Leave-in color conditioner
申请人:Pollack George
公开号:US20050198746A1
公开(公告)日:2005-09-15
The invention is directed to novel hair dye compositions, novel leave-in conditioners, and novel leave-in conditioners with a hair coloring effect. Hair dye compositions, leave-in conditioners, and leave-in conditioners with hair coloring effect may include a styrene/vinylpyrrolidone copolymer emulsion.