Antifreezing coolant composition not including glycol

Patent metadata

Field	Value
Publication number	US-11549044-B2
Application number	US-202017116339-A
Country	US
Kind code	B2
Filing date	Dec 9, 2020
Priority date	Dec 20, 2019
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

Disclosed is an antifreezing coolant composition, which does not include glycol but includes environmentally friendly materials, such as a carboxylic acid salt, an anthranilamide compound, a corrosion inhibitor and a triazole compound. The antifreezing coolant composition may form a thin film on the metal surface in cooling systems for vehicles to thereby exhibit high corrosion resistance at low and high temperatures, superior antifreezing performance at low temperatures, and superior cooling performance at high temperatures.

First claim

What is claimed is:

1. An antifreezing coolant composition, comprising:
an amount of 20 to 50 wt % of an aliphatic or aromatic carboxylic acid salt;
an amount of 0.01 to 1.0 wt % of an anthranilamide compound comprising a compound represented by Chemical Formula 1;
an amount of 0.01 to 1.0 wt % of a corrosion inhibitor;
an amount of 40 to 80 wt % of an aqueous solvent;
an amount of 0.01 to 0.5 wt % of a triazole compound; and
an amount of 0.05 to 0.5 wt % of a buffer agent;
all the wt % are based on the total weight of the antifreezing coolant composition;

wherein R 1 , R 2 and R 3 are hydrogen or C 1 -C 4 alkyl, and
R 4 and R 5 are hydrogen, methyl, trifluoromethyl, trifluoromethoxy, fluorine, chlorine, bromine or iodine,
wherein the buffer agent comprises potassium hydroxide (KOH), sodium hydroxide (NaOH), or combination thereof.

2. The antifreezing coolant composition of claim 1 , wherein the aliphatic carboxylic acid comprises formic acid, acetic acid or combinations thereof.

3. The antifreezing coolant composition of claim 1 , wherein the aliphatic or aromatic carboxylic acid salt comprises an alkali metal salt or alkaline earth metal salt.

4. The antifreezing coolant composition of claim 3 , wherein the alkali metal comprises potassium (K), sodium (Na), or combinations thereof.

5. The antifreezing coolant composition of claim 3 , wherein the alkaline earth metal comprises magnesium (Mg), calcium (Ca), or combinations thereof.

6. The antifreezing coolant composition of claim 1 , wherein the corrosion inhibitor comprises one or more selected from the group consisting of sodium nitrate (NaNO 3 ), sodium nitrite (NaNO 2 ), phosphoric acid (H 3 PO 4 ), and combinations thereof.

7. The antifreezing coolant composition of claim 1 , wherein the triazole compound comprises one or more selected from the group consisting of benzotriazole, tolyltriazole, 1,2,4-triazole, and combinations thereof.

8. A cooling system of a vehicle comprising the antifreezing coolant composition of claim 1 .

9. The cooling system of claim 8 , wherein the antifreezing coolant composition forms a film on a metal surface of the cooling system.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp
• Kd Finechem Co Ltd

Inventors

• Lee Sung Uk
• Park Jin Myeong
• Lim Jae Hun
• Lee Hong Ki

Classifications

• C23F11/08

  in other liquids · CPC title

• C07D249/06

  with aryl radicals directly attached to ring atoms · CPC title

• C23F11/181

  Nitrogen containing compounds · CPC title

• C07C233/65

  having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals · CPC title

• C09K5/10

  Liquid materials · CPC title