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A kind of coal tar for coating and preparation method thereof

A technology for coal tar and paint, applied in the field of preparation, can solve the problems of increasing pretreatment steps, using dangerous solvents, etc., and achieves the effects of increasing value, long storage at room temperature, and wide sources

Active Publication Date: 2019-05-03
BAOWU CHARCOAL MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In short, when using the existing bitumen or coal tar system for coatings, it is necessary to add pretreatment steps or use dangerous solvents, etc.

Method used

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  • A kind of coal tar for coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 100 grams of asphalt with a softening point of 38°C as the raw material, stir and melt it at 100°C, add 37 grams of solvent, and continue to stir for 2 hours to maintain the temperature. Continue to add 15 grams of coumarone resin with a softening point of 25°C, stir and maintain the temperature for 2 hours at the same time, melt to form a mixed solution, and then cool to obtain a coal tar product for coatings.

Embodiment 2

[0028] Take 100 grams of asphalt with a softening point of 45°C as the raw material, stir and melt it at 110°C, add 37 grams of solvent, and continue to stir for 2 hours to maintain the temperature. Continue to add 5 grams of coumarone resin with a softening point of 25° C., stir and maintain the temperature for 2 hours at the same time, melt into a mixed solution, and then cool to obtain a coal tar product for coatings.

Embodiment 3

[0030] Take 100 grams of asphalt with a softening point of 50°C as the raw material, stir and melt it at 110°C, add 30 grams of solvent, and continue to stir for 2 hours to maintain the temperature. Continue to add 5 grams of coumarone resin with a softening point of 80° C., stir and maintain the temperature for 2 hours at the same time, melt into a mixed solution, and then cool to obtain a coal tar product for coatings.

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Abstract

The invention discloses coal tar for paint and a preparation method of the coal tar. The coal tar is prepared from the following components in parts by weight: 50 to 70 parts of asphalt, 4 to 15 parts of coumarone indene resin and 14 to 26 parts of a solvent. The preparation method of the coal tar for the paint comprises the following steps: after smelting the asphalt at 100 DEG C to 140 DEG C, adding a solvent; after uniformly mixing, adding the coumarone indene resin; after completely smelting the coumarone indene resin, obtaining the coal tar for the paint. The coal tar for the paint has the advantages that 1, raw materials are abundant, the source is wide and the price is low; the raw materials including the asphalt, the coumarone indene resin and solvent oil are products of coal chemical industry; the raw materials have good solubility and the value is remarkably improved through comprehensive utilization; 2, in a preparation process, a pre-treatment step does not need to be increased or a dangerous solvent, such as gasoline, is not used; 3, in a storage process, the coal tar is not layered, has no flocculation and no skin formation and can be stored for a long time at room temperature.

Description

technical field [0001] The invention belongs to the field of chemistry and chemical engineering, and relates to a preparation technology of coal tar for coatings. Background technique [0002] At present, most of the anti-corrosion coatings of buried pipelines or underground projects in China use polyurethane or epoxy resin and other types of asphalt paints. This type of asphalt paint uses asphalt or coal tar as the main component. This type of asphalt paint has the advantages of long service life, low water absorption, good metal bonding, and anti-microbial erosion, and is widely used in buried pipelines or underground projects. [0003] In the prior art, Chinese patent CN97105378.2 discloses a kind of anti-corrosion asphalt paint, with asphalt and gasoline as the main components, and using gasoline as a solvent brings certain risks to manufacture and construction. Chinese patent CN200310114087.7 ​​discloses that the present invention discloses an anti-corrosion coal tar p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D195/00C09D145/02
CPCC09D195/00C08L45/02
Inventor 侯文杰陈伟平王仁远陈新胡翔袁轶浩王强李家发卜士明
Owner BAOWU CHARCOAL MATERIAL TECH CO LTD