Composition containing a water soluble alcohol and a corrosion inhibiting additive
AssigneeTexaco Inc.
InventorRodney L. Sung
Life of this patent
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Abstract
Alcohols may be inhibited against corrosion by addition thereto of an alkenyl-substituted aliphatic dicarboxylic acid.
Claims15
A composition comprising
- (i) a water-soluble alcohol;
- and
- (ii) an effective corrosion-inhibiting amount, 0.0001-0.01 w% of, as corrosion inhibiting agent, an alkenyl-substituted aliphatic dicarboxylic acid, said alkenyl group having a molecular weight M.sub.n of at least about 300.
A composition comprising;
- (i) at least one alcohol selected from the group consisting of methanol and ethanol;
- and
- (ii) 0.0001-0.01 w% of polyisobutenyl (M.sub.n of at least about 300) succinic acid.
A composition comprising a gasohol and an effective corrosion-inhibiting amount, 0.0001-0.01 w% of, as corrosion inhibiting agent, an alkenyl (M.sub.n of at least about 300)--substituted aliphatic dicarboxylic acid.
The method of treating a composition containing at least one alcohol selected from the group consisting of methanol and ethanol which comprises adding to said composition containing at least one alcohol selected from the group consisting of methanol and ethanol, 0.0001-0.01 w%, as an effective corrosion-inhibiting amount, of at least one alkenyl-substituted dicarboxylic acid, said alkenyl group having a molecular weight M.sub.n of at least about 300.
A composition comprising
- (i) a water-soluble alcohol;
- and
- (ii) 0.0001-0.01 w%, an effective corrosion-inhibiting amount of, as the sole corrosion-inhibiting agent, an alkenyl-substituted aliphatic dicarboxylic acid, said alkenyl group having a molecular weight M.sub.n of at least about 300.
Dependencies are inferred from the claim text.