JP2009286832A - Coloring agent for petroleum product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coloring agent for petroleum products that prevents generation of harmful substances based on an azo dye and is safe and friendly to the environment. <P>SOLUTION: The coloring agent for petroleum products has various color tones and are prepared by dissolving dyes comprising as the main components red and blue anthraquinone dyes and yellow methine and quinoline dyes in a mixed solvent of methylnaphthalene and styrenated phenol. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a petroleum product colorant for identifying the component contents of various petroleum products or increasing the commercial value.

  In general, because of the ease of use, petroleum product colorants include liquid dyes obtained by dissolving a powder dye in an organic solvent, or those processed directly into a solution type dye without passing through a powdering step.

In addition, these dyes themselves use azo dyes in red and yellow colorants, and these dyes are inexpensive and have strong coloring power. Non-patent documents 1 and 2).
Color Chemical Encyclopedia Pages 67 to 72 Japan Synthetic Organic Chemistry Association Tsuruo Sakai Published by CMC Co., Ltd. Dye chemistry and application, pages 4 to 10 The Chemical Society of Japan, Ken Matsuoka Published by Dai Nippon Book Co., Ltd.

  In these dyes shown in Non-Patent Documents 1 and 2, since azo dyes use orthoaminoazotoluene or orthotoluidine as a starting material, are these substances contained in the product in a small amount? There is a concern that these substances may be generated when the product is decomposed, and there is a concern as an azo dye that may release a specific harmful amine.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a novel petroleum product colorant adapted to an environment in which no specific harmful amine is released.

  This invention solves the said subject by providing the following structures.

  (1) Red and blue anthraquinone dyes and yellow methine dyes and quinoline dyes are the main dyes, which are dissolved and adjusted in a mixed solvent of methylnaphthalene and styrenated phenol to produce a variety of color tones A petroleum product colorant characterized in that it is obtained.

  (2) The petroleum product colorant according to (1), wherein the mixed solvent is 70 to 95% with respect to the mixing ratio of the main component dye of 5 to 30%.

  According to the present invention, anthoraquinone dyes, methine dyes, and quinoline dyes are used as pigments, so that no harmful substances are generated and they can be used safely, and the solvent is not single but methylnaphthalene and styrenation. Since a mixed solvent of phenol is used, it is possible to improve the dissolving power and provide a colorant having excellent color tone.

  And as red, blue, yellow, green, orange, brown and black petroleum product colorants, they can be widely used as lubricant colorants, grease colorants, or fuel oil colorants.

  The best mode for carrying out the present invention will be described in detail by way of examples.

  The present inventors selected from among a large number of dyes, non-toxic, excellent solubility in solvents and oil-soluble anthraquinone, methine, and quinoline dyes as follows.

Dyes tested in the present invention a. Red (Ansolaquinone)
Dye A: C.I. I. Solvent Red 111, C.I. I. 60505
Dye B: C.I. I. Solvent Red 168,1-cyclohexylaminoa
Psoraquinone dye C: C.I. I. Disperse Red 22, C.I. I. 60510
Dye D: C.I. I. Disperse Red 60, C.I. I. 60756
Dye E: C.I. I. Dispers Violet 26, C.I. I. 62025
Dye F: 1-amino, 2-bromo, 4-hydroxyanthoraquinone b. Yellow (quinoline and methine)
Dye G: C.I. I. Solvent Yellow 33, C.I. I. 47000
Dye H: C.I. I. Solvent Yellow 93, C.I. I. 48160
c. Orange system (aminoketone system)
Dye I: C.I. I. Solvent Orange 60, C.I. I. 564100
d. Blue (Ansolaquinone)
Dye J: Solvent Blue 35, C.I. I. 61554
Dye K: C.I. I. Solvent Blue 58, C.I. I. 617043
e. Green (Ansolaquinone)
Dye L: C.I. I. Solvent Green 3, C.I. I. 61565
Dye M: C.I. I. Solvent Green 28, C.I. I. 625580

  Each of the above dyes has its own C.I. I. Identified by Constitution Number.

Next, the following two solvents known as solvents were extracted.
Solvent 1: Styrenated phenol solvent 2: Methylnaphthalene

  As other solvent, a mixture of dinonylphenol, N-methyl-2-pyrrolidone, 1-phenyl-1-xylylethane and 1-phenyl-1-ethylphenylethane was selected, but the solubility was insufficient and could not be put to practical use. It was.

  For each of the above dyes, the presence or absence of practicality was examined by changing the mixing composition of the solvent 1 and the solvent 2, and the results shown in Table 1 below were obtained.

As described above, the following dyes were found to have good solubility and stability by the solubility / stability test of the dye alone in the mixed solvent.
Dye A (red), Dye B (red), Dye E (red), Dye G (yellow), Dye H (yellow), Dye K (blue)

  As a result of further investigation, the mixing ratio of the solvent was judged from solubility, cost, ease of handling, etc., and it was concluded that 40%: 40% per solvent 1: solvent 2 was the best.

  Next, in order to match each required final color tone, several appropriate types are selected in consideration of the price from the above dyes and blended as follows, and dyes (red), (orange), (yellow), ( Brown) was prepared, and the solubility / stability test of this liquid dye was conducted under the following conditions to obtain the results shown in Table 2.

  In addition, the compounding ratio of the following dye in this case is adapted to a partial color tone of each color currently on the market.

  As a result of this test, 5-30% of ansoraquinone (red and blue), methine, and quinoline (yellow) dyes are the main components, and dissolved and adjusted in 70-95% of a mixed solvent of styrenated phenol and methylnaphthalene. Red, blue, yellow, green, orange, purple, brown and black petroleum product colorants have been demonstrated to be stable and free of precipitation even at low temperatures.

Claims (2)

  Red and blue ansolaquinone dyes and yellow methine dyes and quinoline dyes are used as the main dyes, and they are dissolved in a mixed solvent of methylnaphthalene and styrenated phenol and adjusted to obtain a variety of colors. Petroleum product colorant characterized by.   The petroleum product colorant according to claim 1, wherein the mixed solvent is 70 to 95% with respect to the blending ratio of the main component dye of 5 to 30%.