Additives for water-based functional fluids

Details Additives for water-based functional fluids Additives for water-based functional fluids

1977-05-19

1979-12-04

Coughlan, Jr., Paul M.

Compositions

Electrolytes for electrical devices

252 77, 544366, 544370, 548328, 548333, C07D23508, C07D24918, C07D40306

Patent

active

041771559

ABSTRACT:
Selected N-aminomethyl-triazoles and imidazoles are prepared by the Mannich reaction on benzotriazoles or benzimidazoles with formaldehyde and primary or secondary amines. The products consist mainly of the 1-isomers. The compounds are metal passivators and are used as additives for water-based functional fluids being in contact with metals. These compounds with polar substituents on the amino-group are especially useful in water-based fluids such as anti-freeze or metal-working fluids.

REFERENCES:
patent: 3413227 (1968-11-01), Howard et al.
Bachman et al., J. Amer. Chem. Soc., vol. 68, pp. 2496-2499 (1946).
Burckhalter et al., J. Amer. Chem. Soc., vol. 74, pp. 3868-3870 (1952).

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