Compositions of vapour phase corrosion inhibitors, method for the production thereof and use thereof for temporary protection against corrosion

摘要

The invention relates to substance combinations comprising (1) at least one substituted, preferably polysubstituted, pyrimidine, (2) at least one monoalkylurea, (3) at least one C3 to C5 aminoalkyldiol, and optionally (4) at least one benzotriazole, preferably a benzotriazole which is substituted on the benzene ring. The components may be mixed together or dispersed in water or pre-mixed in a solubiliser that is miscible in any ratio with mineral oils and synthetic oils, such as for example a phenyl alkyl alcohol or an alkylated phenol. Such substance combinations can be used as vapour phase corrosion inhibitors in packagings or during storage in closed spaces for protecting customary utility metals, such as iron, chromium, nickel, tin, zinc, aluminium, copper and alloys thereof, against atmospheric corrosion.

主权项

1. A corrosion-inhibiting substance combination capable of evaporating or sublimating comprising:
at least one polysubstituted pyrimidine selected from the group consisting of: 2,4-dihydroxy-5-methylpyrimidine (thymine), 2-amino-4-methylpyrimidine, 2-amino-4-methoxy-6-methylpyrimidine, 2-amino-4,6-dimethylpyrimidine (cytosine), and a combination thereof; at least one monoalkylurea: and at least one C3 to C5 aminoalkyldiol.