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Carbon black, method for its manufacture and application

A technology of carbon black and polycyclic aromatic hydrocarbons, applied in chemical instruments and methods, applications, household appliances, etc., can solve the problems of reducing the content of functional groups and reducing the degree of oxidation of volatile components

Active Publication Date: 2011-05-18
EVONIK CARBON BLACK GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] A further disadvantage which exists particularly in the case of heat treatment of carbon blacks is the relatively pronounced reduction in the degree of oxidation of the volatile components at 950° C. and the corresponding reduction in the content of functional groups on the surface of the carbon blacks, which makes particularly In the case of oxidized carbon black raw materials, the desired surface groups are partially or completely removed

Method used

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  • Carbon black, method for its manufacture and application
  • Carbon black, method for its manufacture and application
  • Carbon black, method for its manufacture and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] In order to reduce the content of polycyclic aromatic hydrocarbons (PAHs), the pelletized carbon black was figure 1 Processing was performed in the IR pilot plant shown. The residence times and temperatures are shown in Table 1.

[0126] The raw carbon black used was raw carbon black A. In the test series described here, the PAH content was determined according to the 22PAH method and the 15PAH method (Table 1).

[0127] Table 1

[0128]

[0129] It was found that PAHs could be reduced to less than 1% of the original loading of PAHs.

Embodiment 2

[0131] In order to reduce the content of polycyclic aromatic hydrocarbons (PAHs), in such as figure 2 The pelletized carbon black was processed in the microwave system shown. The residence times and temperatures are shown in Table 2.

[0132] The raw carbon black used was raw carbon black A. In the test series described here, the PAH content was determined according to the 22PAH method and the 15PAH method (Table 2).

[0133] Table 2

[0134]

[0135] n.d. = not determined

[0136] In the case of the microwave-treated samples, a very significant reduction of PAHs to 0.1% of the original loading of PAHs was achieved.

Embodiment 3

[0138] exist figure 2 In the microwave system shown, about 80 g of raw carbon black A was added. The microwave reactor was purged with nitrogen (5 l / h) before the start of the experiment, then irradiated with microwaves, and after the end of the experiment, the reactor was cooled to a temperature <120°C under nitrogen.

[0139] The residence time and temperature were varied from 1-20 min and 400-600°C, respectively. The time after reaching the target temperature is measured.

[0140] The temperature was recorded by PC.

[0141] In Table 3, different parameters were varied.

[0142] table 3

[0143]

[0144] In the case of the carbon blacks of the invention, the content of PAHs is significantly reduced. At 600°C, the content of PAHs decreased to less than 0.4ppm.

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Abstract

The invention relates to a carbon black, a method for its manufacture and an application. Carbon black with a content of polycyclic aromatic hydrocarbons measured by the 22 PAH method of less than 5 ppm and an STSA surface area of <90 m2 / g. The carbon black is prepared by treating the starting carbon black with electromagnetic radiation. The carbon black can be used in rubber, plastics, printing inks, liquid inks, inkjet inks, toners, coating materials, paints, adhesives, batteries, pastes, paper, fuel cells, bitumen, concrete and other building materials.

Description

technical field [0001] The present invention relates to carbon black, its preparation method and its use. Background technique [0002] Carbon black is widely used as a black pigment and as a reinforcing agent and filler. Carbon black with different properties is prepared by different methods. The most common method is the production by oxidative pyrolysis of carbon black feedstock. In this case, the carbon black raw material undergoes incomplete combustion at high temperature in the presence of oxygen. Such preparation methods of carbon black include, for example, a furnace black method, a gas black method, and a lamp black method. Other methods are, for example, the acetylene method, the pyrolytic carbon black method and the plasma method. [0003] Carbon-containing carbon black raw materials are mainly aromatic carbon black oils. The product stream of oxidative pyrolysis consists of off-gas comprising hydrogen and carbon monoxide, and carbon black fines suspended in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/00C09C1/56C09C3/00C08L101/00C08K3/04C09D11/00C09D11/02G03G9/09
CPCC01P2006/12C09D11/324C09D11/037G03G9/0904C01P2006/19C01P2006/60C09C1/56C01P2006/80
Inventor K·贝格曼M·丹内尔A·厄尔曼B·施瓦策C·托恩特拉普
Owner EVONIK CARBON BLACK GMBH
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