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Novel organosilicone corrosion inhibitor composition and preparation method thereof

A technology of corrosion inhibitor and composition, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of weak temperature adaptability, unstable film formation on the surface of metal internal components, etc., achieve strong hydrophobicity, improve electron donating ability, high The effect of adsorption activity

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art and the problems in operation, in order to overcome the defects of weak temperature adaptability of the existing alkyl imidazoline and amides and other corrosion inhibitors, unstable film formation on the surface of some metal internal components, etc., the present invention provides a A kind of organosilicon corrosion inhibitor composition with good thermal stability, excellent surface film-forming properties and stable anti-corrosion film structure and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 10g of methylphenyl hydrogen-containing polysiloxane with an average molecular weight of 2000 (active hydrogen content of 0.5wt%, phenyl content of 1.5~2.5wt%), 0.7g of 2-hydroxybenzimidazole and 0.4g of hydroxyimidazole, Add it into a round-bottomed flask filled with 350mL n-heptane, stir continuously while raising the temperature to 75±5°C in a constant temperature water bath, then add about 10 drops of 0.05mol / L isopropanol solution of chloroplatinic acid with a dropper, the reaction process Under nitrogen protection for 5 hours, the reaction mixture was distilled off under reduced pressure to remove the solvent n-heptane. Then inject 400mL of toluene into the flask, continue to stir, add about 1g of hydroxyethylethylenediamine at the same time, continue to heat up to 90±5°C, add about 5g of 0.1mol / L sodium hydroxide solution dropwise, and fully react for 2 hours. The reaction mixture was distilled off under reduced pressure to remove the solvent toluene, and th...

Embodiment 2

[0032]Take 10g of methylphenyl hydrogen-containing polysiloxane with an average molecular weight of 2000 (the active hydrogen content is 0.3wt%, and the phenyl content is 2~2.5wt%), 0.70g of 2-hydroxybenzimidazole and 0.40g of hydroxyimidazole, Add it into a round bottom flask filled with 350mL n-heptane, stir continuously while raising the temperature to 70±5°C in a constant temperature water bath, then add about 15 drops of 0.05mol / L isopropanol solution of chloroplatinic acid with a dropper, the reaction process Under nitrogen protection for 6 hours, the reaction mixture was distilled off under reduced pressure to remove the solvent n-heptane. Then inject 350ml of toluene into the flask, continue to stir, add about 1.5g of hydroxyethylethylenediamine at the same time, continue to heat up to 90±5°C, add 5g of 0.1mol / L potassium hydroxide solution dropwise, and fully react for 1.5 hours. The reaction mixture was distilled off under reduced pressure to remove the solvent tolue...

Embodiment 3

[0034] Take 10g of methylphenyl hydrogen-containing polysiloxane (0.5wt% active hydrogen content, 1.5~2.5wt% phenyl content) with an average molecular weight of 1500, 0.75g of 2-hydroxybenzimidazole and 0.5g of hydroxyimidazole, Add it into a round-bottomed flask filled with 350mL n-heptane, stir continuously while raising the temperature to 70±5°C in a constant temperature water bath, then add about 10 drops of 0.05mol / L isopropanol solution of chloroplatinic acid with a dropper, the reaction process Under nitrogen protection for 5 hours, the reaction mixture was distilled off under reduced pressure to remove the solvent n-heptane. Then inject 400mL of toluene into the flask, continue to stir, and add about 1g of hydroxyethylethylenediamine at the same time, continue to heat up to 90±5°C, add about 5g of 0.1mol / L sodium hydroxide solution dropwise, and fully react for 2 hours. The reaction mixture was distilled off under reduced pressure to remove the solvent toluene, and the...

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Abstract

The invention relates to a novel organosilicone corrosion inhibitor composition and a preparation method thereof. The novel organosilicone corrosion inhibitor composition comprises methylphenyl hydrogen-containing polysiloxane, 2-hydroxyl benzimidazole, hydroxyl imidazole, hydroxyethyl ethylenediamine, chloroplatinic acid isopropyl alcohol solution, an alkali catalyst, a solvent A and a solvent B. The novel organosilicone corrosion inhibitor composition is obtained by grafting 2-hydroxyl benzimidazole, hydroxyl imidazole and hydroxyethyl ethylenediamine substituent groups with high adsorptivity on surface of metal in presence of a catalyst at a certain temperature while linear methylphenyl hydrogen-containing polysiloxane is taken as a basic raw material. Compared with the prior art, the novel organosilicone corrosion inhibitor composition has the advantages of wide temperature and environment adaptability, strong adsorption film forming characteristic, low usage amount and good lasting corrosion resistance, so that the novel organosilicone corrosion inhibitor can serve as a novel efficient metal surface corrosion inhibitor.

Description

technical field [0001] The invention relates to a corrosion inhibitor composition and a preparation method thereof, in particular to an organic silicon corrosion inhibitor composition which can significantly reduce the corrosion rate of the inner wall of a metal pipeline and effectively improve the corrosion resistance of a device and a preparation method thereof, belonging to the corrosion inhibitor composition and its preparation method. field of protection. Background technique [0002] In recent years, crude oil has gradually become heavier and inferior, while petroleum products are constantly required to be lighter and cleaner, which increases the difficulty of crude oil processing, and the corrosion problem in the production process is also particularly serious, especially in the refining process. Sexual substances pose a serious threat to production safety. Countries have always attached great importance to corrosion problems. [0003] Corrosion inhibitor is a kind ...

Claims

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Application Information

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IPC IPC(8): C09D183/05C09D5/08C09D7/12
Inventor 孙鹏王鑫刘纾言
Owner CHINA PETROLEUM & CHEM CORP
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