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Antifreezing fluid

An antifreeze and propylene glycol technology, applied in the field of antifreeze, can solve the problems of easy volatilization of methanol, plugging of pipes, and decreased usage, and achieve the effects of high anti-scaling, no blocking of pipes, and high stability.

Active Publication Date: 2011-04-13
JIANGSU YINGTIAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because methanol is volatile, has a low boiling point, and has great potential safety hazards, and calcium chloride is easy to precipitate and fill pipes, so its usage in production gradually decreases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the reaction tank, add 454kg of 1,2-propanediol successively, add 540kg of pure water, then add 5kg of carboxyethylene diphosphoric acid, 1kg of p-tert-butyl ortho-diphenol, and then can be loaded into barrels after two hours of full stirring;

[0017] After testing, its melting point reaches -22 °C, which meets the use requirements of -20 °C for refrigeration units

Embodiment 2

[0019] In the reaction tank, add 610kg of 1,2-propanediol successively, add 380kg of deionized water, then add 8kg of aminotrimethylene phosphoric acid, 2kg of p-hydroxyanisole, and fully stir for two hours to fill in a barrel;

[0020] After testing, its melting point reaches -40 °C, which meets the use requirements of -40 °C.

Embodiment 3

[0022] In the reaction tank, add the 1 of 500kg successively, 3-propanediol, add 494kg of distilled water, then add 5kg of benzotriazole, and the hydroquinone of 1kg, can be filled into barrels through full stirring in two hours;

[0023] After testing, its melting point reaches -40 °C, which meets the use requirements of -40 °C.

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Abstract

The invention aims to provide an antifreezing fluid, which comprises the following components by weight percentage: 40 to 90 percent of propylene glycol, 0.01 to 1 percent of anti-fouling corrosion inhibitor, 0.001 to 0.5 percent of antioxidant, and the balance of water. The antifreezing fluid has the advantages of high stability, difficult volatilization, no pipeline blockage, and high antifreezing, anti-rust, and anti-fouling performances.

Description

technical field [0001] The present invention relates to an antifreeze liquid. Background technique [0002] Antifreeze is widely used in automobiles, tractors, mining machinery, and refrigeration units to ensure that the equipment will not be cracked and run normally in winter or at low temperatures. The main components of antifreeze currently commonly used contain calcium chloride, methanol or ethylene glycol. Because methanol is volatile, has a low boiling point, and poses a great safety hazard, calcium chloride is easy to precipitate and fill the pipeline, and its usage in production gradually decreases. SUMMARY OF THE INVENTION [0003] The object of the present invention is to provide an antifreeze. [0004] For achieving the above object, the technical scheme adopted in the present invention is: [0005] An antifreeze, by weight percentage, comprising the following components: [0006] Propylene glycol 40~90% [0007] Scale and corrosion inhibitor 0.01~1% [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/20C23F11/167
Inventor 杨水清罗伟邱鸿恩
Owner JIANGSU YINGTIAN CHEM
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