| 摘要 |
PURPOSE:An anti-freeze for car engines, providing rust prevention and corrosion resistance, obtained by blending an anti-freeze consisting of a glycol, water and a corrosion inhibitor with a specific quarternary ammonium base (salt). CONSTITUTION:An anti-freeze consisting of a glycol, water and a corrosion inhibitor is blended with a quaternary ammonium base (salt) shown by the formula (R1, R2, and R3 are 1-4C alkyl; R' is 1-4C alkyl, or beta-hydroxylethyl), to give the aimed anti-freeze. Choline, tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetra-n-propylammonium hydroxide, tetra-n-butylammonium hydroxide, etc. may be cited as the base. |
