Organic engine cooling liquid

Abstract

The present invention relates to organic cooling liquid for engine, it is composed of ethylene glycol 1000 parts, sebacic acid 2-8 parts, terephthalic acid 2-5 parts, octytic acid 1-12 parts, methylbenezenetriazole 1-4 parts, p-tert-butylbenzoic acid 5-25 parts, succinic acid 1-4 parts, antifoaming agent 0.1-0.2 parts, the invented cooling liquid possesses the advantages of good metal corrosion resistance, good transportation stability, strong hard water resistance, small environmental pollution, no harmful component, small use level etc.

Description

(1) Technical field [0001] The invention relates to an engine coolant, in particular to an organic carboxylic acid engine coolant, which belongs to the field of chemical industry. (2) Technical background [0002] Engine coolant is commonly known as antifreeze, which is divided into inorganic type and organic type. Most of the domestic use is inorganic type coolant. When the engine is running for 25,000-50,000 kilometers, it is necessary to add corrosion inhibitors, and due to silicon The presence of acid salts makes the cooling liquid poor in stability, and it is easy to precipitate colloidal silica, which makes the product turbid and precipitates, which affects the use, so the product quality is not good. For example, the American Texaco Company and ARCO Company have made achievements in this regard. The domestic organic cooling liquid is currently in the initial research stage, and the main research is to improve the silicide. There is no report on the organic carboxylic ...

AI Technical Summary

Problems solved by technology

[0002] Engine coolant is commonly known as antifreeze, which is divided into inorganic type and organic type. Most of the domestic use is inorganic type coolant. When the engine is running for 25,000-50,000 kilometers, it is necessary to add corrosion inhibitors, and due to silicon The presence of acid salts makes the cooling liquid poor in stability, and it is easy to precipitate colloidal silica, which makes the product turbid and precipitates, which affects the use, so the product quality is not good. For example, the American Texaco Company and ARCO Company have made achievements in this regard. The domestic organic cooling fluid is currently in the initial research stage, and the research is mainly on the improvement of silicide. There is no report on the organic carboxylic acid cooling fluid.

[0003] Due to the unreasonable compounding of additives in foreign organic cooling fluids, such as US5741436 and US5366651 in several patent documents, some have unsatisfactory effects on multi-metal corrosion inhibition, some have poor storage stability, and some use a large amount ,polluted environment