US 12,441,894 B2
Compositions for inhibiting corrosion
James Ivan Mardel, Acton (AU); Ivan Stewart Cole, Acton (AU); Paul Andrew White, Acton (AU); Anthony Ewart Hughes, Acton (AU); Tracey Anne Markley, Acton (AU); Timothy Graham Harvey, Acton (AU); Joseph Osborne, Seattle, WA (US); and Erik Ivan Sapper, Grover Beach, CA (US)
Assigned to THE BOEING COMPANY, Arlington, VA (US); and COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION, Acton (AU)
Filed by THE BOEING COMPANY, Arlington, VA (US); and COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION, Acton (AU)
Filed on Mar. 19, 2024, as Appl. No. 18/610,024.
Application 17/067,453 is a division of application No. 15/562,826, granted, now 10,800,929, issued on Oct. 13, 2020, previously published as PCT/AU2016/050245, filed on Mar. 31, 2016.
Application 18/610,024 is a continuation of application No. 18/100,230, filed on Jan. 23, 2023, granted, now 11,987,726.
Application 18/100,230 is a continuation of application No. 17/067,453, filed on Oct. 9, 2020, granted, now 11,560,483, issued on Jan. 24, 2023.
Claims priority of provisional application 62/141,084, filed on Mar. 31, 2015.
Prior Publication US 2024/0287319 A1, Aug. 29, 2024
Int. Cl. C09D 5/08 (2006.01); C09D 5/03 (2006.01); C09D 163/00 (2006.01); C23C 22/56 (2006.01); C23F 11/08 (2006.01); C23F 11/14 (2006.01); C23F 11/16 (2006.01); C23F 11/18 (2006.01)
CPC C09D 5/086 (2013.01) [C09D 5/038 (2013.01); C09D 5/084 (2013.01); C09D 163/00 (2013.01); C23C 22/56 (2013.01); C23F 11/08 (2013.01); C23F 11/149 (2013.01); C23F 11/161 (2013.01); C23F 11/162 (2013.01); C23F 11/165 (2013.01); C23F 11/18 (2013.01); C23F 11/185 (2013.01)] 23 Claims
 
1. A method comprising:
applying a corrosion inhibitor composition to a surface of a substrate, wherein the corrosion inhibitor composition comprises:
at least one metal salt or mixed metal salt, wherein the metal is selected from the group consisting of Zn, La, Pr, Ce, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Co, Y, Sc, Zr, and combination(s) thereof; and
at least one corrosion inhibiting agent selected from an organic heterocyclic compound of Formula 1:

OG Complex Work Unit Chemistry
wherein:
A is fused with one or more aryl or heteroaryl rings to form a benzimidazole, wherein the ring is optionally substituted with one or more substituents, wherein a dotted line represents one or more optional double bonds;
Y1 is selected from the group consisting of S or SH, wherein the dotted line represents a double bond when Y1 is S or is absent when Y1 is SH;
X1 is selected from the group consisting of N and NH;
X2 is selected from the group consisting of N and NR5;
R5 is selected from the group consisting of hydrogen, amino, C1-C10alkyl, C2-C10alkenyl, C2-C10alkynyl, aryl, and heteroaryl, wherein amino, alkyl, alkenyl, alkynyl, aryl, or heteroaryl is optionally substituted; and
the corrosion inhibitor composition is encapsulated by a permeable polymer film, wherein the permeable polymer film is configured to permit controlled diffusion of the corrosion inhibitor composition.