Corrosion inhibitors including a 3-dialkylamino-3-phenylethenylprop-1-yne
AssigneeGAF Corporation
InventorsEugene V. Hort, Lowell R. Anderson, Dru W. Alwani
Life of this patent
Estimating the term…
Abstract
An aqueous composition for inhibiting the corrosion of metals placed therein is described. The composition comprises a non-oxidizing acid, and, as a corrosion inhibitor, an effective amount of a 3-dialkylamino-3-phenylethenylprop-1-yne.
Claims10
An aqueous composition for inhibiting the corrosion of metals placed therein comprising:
- (a) an effective amount of a corrosion-inhibiting compound having the formula:
- ##STR5## where R.sub.1 and R.sub.2 are independently alkyl C.sub.1-8 ;
- R.sub.3 is independently hydrogen, halo, or alkyl C.sub.1 -C.sub.8 ;
- and
- n is 1-2;
- and
- (b) a non-oxidizing acid.
A compound of the formula:
- ##STR6## where R.sub.1 and R.sub.2 are independently alkyl C.sub.1 -C.sub.8 ;
- R.sub.3 is independently hydrogen, halo, or alkyl C.sub.1 -C.sub.8 ;
- and
- n is 1-2.
A corrosion inhibitor for aqueous solutions of mineral acids consisting essentially of the reaction product obtained by the catalytic ethynylation of a dialkylamine, a cinnamaldehyde, and acetylene.
An aqueous acidic solution inhibited to corrosion of metal containing a non-oxidizing acid, said inhibitor consisting essentially of an effective amount of the reaction product obtained by the catalytic ethynylation of a diamine, a cinnamaldehyde and acetylene.
Dependencies are inferred from the claim text.