ANTIFREEZE Russian patent published in 2015 - IPC C09K5/20 C09K5/10 C23F11/14 

FIELD: chemistry.

SUBSTANCE: antifreeze contains, wt %: product of condensation of boric acid, diethanolamine, ethylcarbitol and oleinic acid with molar ratio 1:3:(0.5-0.7):0.4 with amine number not less than 42 mg HCl/g 0.5-2.5 triethylphosphate 0.3-0.5, imidazole 0.5-0.7, product of interaction of methyltriethoxysilane with 1,2-propyleneglycol with molar ratio 1:8 0.02-0.04, 1.2-propyleneglycol 60.0-70.0, water to 100.

EFFECT: increase of protective properties of antifreeze with respect to rubber, black and nonferrous metals, increase of its ecological safety.

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