1,2-propylene glycol antifreezing liquid coolant

A technology of antifreeze coolant and propylene glycol, applied in 1 field, to achieve the effect of good addition effect

Active Publication Date: 2011-11-30
TEEC AUTUMOTIVE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the study of 1,2-propanediol type antifreeze coolant, the formulation technology of ethylene glycol type cannot be simply transplanted, and appropriate improvements must be made according to the characteristics of 1,2-propanediol itself, and in order to better reflect its cha

Method used

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  • 1,2-propylene glycol antifreezing liquid coolant
  • 1,2-propylene glycol antifreezing liquid coolant
  • 1,2-propylene glycol antifreezing liquid coolant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Prepare 1000kg of an antifreeze used in areas where the lowest temperature in the north is below -45°C:

[0061] Put 800kg of 1,2-propanediol into the reaction kettle, add 100kg of water while stirring, keep the temperature in the kettle not exceeding 80°C, then add 3kg of benzotriazole, 3kg of sodium nitrate, 1.4kg of sodium molybdate, benzene Sodium formate 15kg, after stirring and dissolving for 60 minutes, add 12kg of 85Wt.% phosphoric acid, add 18kg of sebacic acid, then adjust pH=7.9~8.5 with potassium hydroxide solid under stirring, then add 1.4kg of hydrolyzed polymaleic anhydride to remove foam Mix 4.5g of agent, 32g of acid green dye, 15g of tartrazine and water (the quality of water is equal to 1000kg minus the sum of all the above-mentioned materials), and then add them to the reaction kettle together to form a light green transparent solution. After passing the inspection, filter through a filter of 0.5-1 μm and then pack.

[0062] The specific parameters ...

Embodiment 2

[0065] Prepare 1000kg direct use type -30℃ antifreeze coolant:

[0066] Put 600kg of 1,2-propanediol into the reaction kettle, add 200kg of water while stirring, keep the temperature in the kettle not exceeding 80°C, then add 1.9kg of benzotriazole, 2kg of sodium nitrate, 1kg of sodium molybdate, benzene Sodium formate 10kg, after stirring and dissolving for 120 minutes, add 9kg of 85Wt.% phosphoric acid, add 13kg of sebacic acid, then adjust pH=7.9 to 8.5 with potassium hydroxide solid under stirring, then add 1kg of hydrolyzed polymaleic anhydride, cancel Mix 4g of foaming agent, 28g of acid green dye, 14g of tartrazine and water (the quality of water is equal to 1000kg minus the sum of all the above-mentioned materials), and then add them to the reaction kettle together to form a light green transparent solution. After passing the inspection, filter through a filter of 0.5-1 μm and then pack.

[0067] The specific parameters of the glassware corrosion test are as follows: ...

Embodiment 3

[0070] Preparation of 1000kg direct use type - 20 ℃ antifreeze coolant:

[0071] Put 420kg of 1,2-propanediol into the reaction kettle, add 400kg of water while stirring, keep the temperature in the kettle not exceeding 80°C, then add 1.5kg of benzotriazole, 1.5kg of sodium nitrate, and 0.8kg of sodium molybdate , Sodium benzoate 8kg, after stirring and dissolving for 120 minutes, add 6.8kg of 85Wt.% phosphoric acid, add 9kg of sebacic acid, then adjust pH=7.9 to 8.5 with potassium hydroxide solid under stirring, then add hydrolyzed polymaleic anhydride 0.8kg, 4g of defoaming agent, 28g of acid green dye, 14g of tartrazine and water (the quality of water is equal to 1000kg minus the sum of all the above materials) are mixed evenly, and then added to the reaction kettle together, finally forming a light green The transparent solution can be dispensed after being filtered through a 0.5-1μm filter after passing the inspection.

[0072] The specific parameters of the glassware co...

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Abstract

The invention discloses a 1,2-propylene glycol antifreezing liquid coolant, which comprises the following components of: by weight, 35-80% of 1,2-propylene glycol, 0.05-0.5% of sodium molybdate, 0.1-0.8% of sodium nitrate, 0.1-0.9% of benzotriazol, 0.5-2.8% of sebacic acid, 0.7-2.7% of potassium hydroxide, 0.4-1.5% of phosphoric acid at the concentration of 85wt%, 0.5-2.8% of sodium benzoate, 0.05-0.3% of hydrolyzed maleic anhydride, 0.0004-0.003% of an antifoaming agent, and the balance being deionized water. The invention has features of long-term effect as well as green and environmental protection; the antifreezing agent is the nontoxic 1,2-propylene glycol which can naturally degraded; according to the formulation technology, organic acids are used as the main materials with the recombination of a few of inorganic salts to prepared the antifreezing liquid coolant which provides long-acting protection for a cooling system.

Description

technical field [0001] The invention relates to an antifreeze cooling liquid for comprehensively protecting the automobile cooling system, in particular to a 1,2-propanediol antifreeze cooling liquid. Background technique [0002] Antifreeze coolant is a liquid with a low freezing point. The aqueous solution containing a certain amount of glycol will not freeze at low temperatures. It has good fluidity and can take away a large amount of heat generated by the engine during operation. It can be used all year round. Used in cooling systems such as automobiles, ships, and large cooling towers, it has the advantages of anti-boiling, anti-corrosion, anti-fouling, anti-freezing, and anti-evaporation loss. [0003] The varieties of antifreeze coolant can be divided into environmentally friendly organic acid antifreeze coolant and low-grade inorganic salt antifreeze coolant according to the evaluation of environmental impact. Low-grade inorganic salt antifreeze coolant has been gra...

Claims

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Application Information

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IPC IPC(8): C09K5/20
Inventor 陶佃彬邹密施丽丽曹云龙童秀凤
Owner TEEC AUTUMOTIVE CHEM
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