Anti-freezing fluid

A technology of antifreeze and mass percentage, applied in the field of antifreeze, can solve the problems of poor stability of antifreeze, expensive formula of organic acid type antifreeze, precipitation and other problems

Active Publication Date: 2008-11-12
张家港迪克汽车化学品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this kind of additives mostly use cheap silicate and borax formulas, the stability of the antifreeze is poor, and precipitation is easy to occur during use, resulting in failure of the cooling system
The formulas of organic acid antifreeze are more expensive, and their application is limited to a small amount of high-end cars.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Prepare 1000kg of an antifreeze used in areas where the lowest temperature in the north is below -55°C:

[0057] Put 700kg of ethylene glycol into the reaction kettle, then add 200kg of water, start stirring, then add 0.5kg of tolyltriazole, 1.0kg of benzotriazole, 1.6kg of sodium nitrate, and 1.1kg of sodium molybdate , stir for 10 minutes to be dissolved, add 13.2kg of sodium benzoate, stir and dissolve for 15 minutes, add 13.2kg of sebacic acid, 4.4kg of undecanedibasic acid, 3.3kg of caprylic acid, and add 15kg of potassium hydroxide at the same time, dissolve and add 5.4kg of phosphoric acid with a concentration of 85%, and then adjust the pH between 7.8 and 8.5 with the remaining potassium hydroxide under stirring, then add 0.8kg of hydrolyzed polymaleic anhydride, and mix the defoamer and dye with the remaining water After adding to the reaction kettle, a light green transparent solution is finally formed. After passing the inspection, it can be filtered through ...

Embodiment 2

[0061] Prepare 1000kg of an antifreeze used in areas where the lowest temperature in the south is below -25°C:

[0062] Now put 400kg of ethylene glycol into the reaction kettle, then add 520kg of water, start stirring, then add 0.4kg of tolyltriazole, 0.7kg of benzotriazole, 1.2kg of sodium nitrate, and 0.8 kg of sodium molybdate kg, stirred for 10 minutes to be dissolved, then added 9.6kg of sodium benzoate, stirred and dissolved for 15 minutes, added 9.6kg of sebacic acid, 3.2kg of undecanedibasic acid, 2.4kg of caprylic acid, and 10kg of potassium hydroxide, and dissolved transparently Add 4kg of phosphoric acid with a concentration of 85%, and then adjust the pH between 7.8 and 8.5 with the remaining potassium hydroxide under stirring, then add 0.6kg of hydrolyzed polymaleic anhydride, and mix the defoamer and dye with the rest of the water The reaction kettle finally forms a light green transparent solution, which can be dispensed after being filtered through a 0.5-1μm f...

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Abstract

The invention discloses anti-freeze fluid. The compositions by weight percentage of the anti-freeze fluid are: 35 to 85 percent of glycol, 0.25 to 0.06 percent of sodium molybdate, 0.4 to 0.1 percent of sodium nitrate, 3.5 to 0.8 percent of potassium hydroxide, 1.2 to 0.2 percent of 85 percent phosphoric acid, 0.3 to 0.02 percent of metyl benzotriazole, 0.5 to 0.05 percent of benzotriazole, 3.5 to 0.8 percent of sebacic acid, 1.0 to 0.25 percent of undecanedioic acid, 1.0 to 0.2 percent of octanoic acid, 3.0 to 0.8 percent of sodium benzoate, 0.2 to 0.05 percent of hydrolytic-polymeric maleic anhydride, 0.003 to 0.01 percent of antifoaming agent, the balance being deionized water. The anti-freeze fluid is characterized by long effect and environmental protection, and can perform all-around multi-layer protection on an automobile cooling system.

Description

technical field [0001] The invention relates to an antifreeze liquid system for all-round multi-layer protection of an automobile cooling system, in particular to an antifreeze liquid. Background technique [0002] Antifreeze is a liquid with a low freezing point. It will not freeze at low temperatures. It has good fluidity and can take away a large amount of heat generated during the operation of the engine. It is the cooling medium of the water-cooled engine of the car and is used in winter Anti-freezing and anti-boiling in summer for automobile water tanks, and can effectively prevent fouling of the cooling system, corrosion of metal parts, and protect the normal operation of the engine. The penetration rate of automobile antifreeze in developed countries has reached 100%, but only about 5% in China, and water is still used as the main cooling medium. [0003] Antifreeze is divided into inorganic type and organic type. Most of the antifreeze used in China is low-grade in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/20
Inventor 陶佃彬王兆银钱雪芬曹云龙童秀凤
Owner 张家港迪克汽车化学品有限公司
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