초록

The invention is a corrosion inhibiting water-based machining fluid comprising a synergistic combination of a 2-heptyl-1-ethoxypriopionic acid imidazoline, sodium salt; free amine and a mixture of an amine salt of C8 to C14 dicarboxylic acids.

대표청구항 ▼

A water-base composition which is non corroding to metals in contact therewith comprising an effective corrosion inhibiting amount of a concentrate comprising: A. 2-heptyl-1-ethoxypropionic acid imidazoline, sodium salt in an amount of at least about 2 wt %; B. a free amine selected from the group c

A water-base composition which is non corroding to metals in contact therewith comprising an effective corrosion inhibiting amount of a concentrate comprising: A. 2-heptyl-1-ethoxypropionic acid imidazoline, sodium salt in an amount of at least about 2 wt %; B. a free amine selected from the group consisting of diethanolamine, triethanolamine and mixtures thereof in an amount of about 20 to 27 wt %; and C. an amine salt of a dicarboxylic acid selected from the group consisting of the diethanolamine and triethanolamine salts of a C8 to C14 dicarboxylic acid and mixtures thereof in an amount such that the weight ratio of amine salt to free amine is about 3:8 to 5:8.