Corrosion inhibitors

Details Corrosion inhibitors Corrosion inhibitors

1984-10-31

1986-09-30

Guynn, Herbert B.

Compositions

Leather or fur treating

252148, 252391, 252392, 422 12, C23F 1104, E21B 4327

Patent

active

046146008

ABSTRACT:
An anti-corrosive composition is disclosed which comprises the condensate of a polyamine such as diethylenetriamine, triethylenetetramine or aminoethylethanol amine with a 21 or 22 carbon fatty polycarboxylic acid or acid anhydride. The composition may additionally include the condensation products of the above polyamines with either tall oil fatty acids or Rosin S. Propargyl alcohol has been found to enhance the anti-corrosive effects of the composition. The compositions are especially useful in well drilling operations where a strong inorganic acid is used to facilitate crude oil flow.

REFERENCES:
patent: 2468163 (1949-04-01), Blair et al.
patent: 2598213 (1952-05-01), Blair
patent: 2966458 (1960-12-01), Counts
patent: 3107221 (1963-10-01), Harrison et al.
patent: 3134759 (1964-05-01), Kirkpatrick et al.
patent: 3687847 (1972-08-01), Maddox et al.
patent: 3931029 (1976-01-01), Dutton et al.
patent: 4344861 (1982-08-01), Levy
patent: 4447269 (1984-05-01), Schreuders et al.
Foster et al, article in Industrial and Engineering Chemistry, vol. 51, No. 7, Jul. 1959, pp. 825-828.

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