IP Library › Granted Patent US 6,982,062
Granted Patent B2
US 6,982,062 · App. 10/624,444 · Granted Jan 3, 2006

Corrosion inhibiting composition

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Quick Facts
Patent No.
US 6,982,062
App. No.
10/624,444
Granted
Jan 3, 2006
Kind
B2
Abstract

This invention relates to a corrosion inhibiting composition comprising (a) an aliphatic amine, (b) an azole selected from the group consisting of (1) tolyltriazole, (2) benzotriazole, and (3) mixtures thereof, and (c) a benzoate. The compositions are particularly useful in inhibiting the corrosion of metal equipment, particularly equipment made from cast iron and aluminum, and more particularly, engine blocks that have been subjected to water flushing. The invention also relates to a process for inhibiting corrosion, particularly the vapor phase corrosion of metal equipment.

Claims (12)

1. A process for inhibiting the vapor phase corrosion of drained metal equipment that contains one or more recesses where water can reside which comprises:

adding an effective corrosion inhibiting amount of a corrosion inhibitor composition comprising:

(a) an aliphatic amine or an aliphatic alkanolamine,

(b) an azole selected from the group consisting of (1) tolyltriazole, (2) benzotriazole, and (3) mixtures thereof, and

(c) a benzoate,

to said drained equipment, such that the weight ratio of aliphatic amine or aliphatic alkanolamine to azole in the composition is from 50:1 to 30:1 and the weight ratio of benzoate to azole in the composition is from 40:1 to 150:1, and such that the corrosion inhibiting composition contains less than 1.0 part of an inorganic salt per hundred parts of corrosion inhibiting composition.

2. The process of claim 1 wherein the amount of corrosion inhibiting composition used is from 1 percent to 5 percent.

3. The process of claim 2 wherein the metal equipment is made from a metal selected from the group consisting of cast iron and aluminum.

4. The process of claim 3 wherein the metal equipment is an automotive engine.

5. The process of claim 1 wherein component (a) is an alkanolamine.

6. The process of claim 5 wherein the benzoate is ammonium benzoate.

7. The process of claim 6 wherein the weight ratio of aliphatic amine or aliphatic alkanolamine in the composition is about 35:1 to 45:1 and the weight ratio of benzoate to azole in the composition is from about 80:1 to 120:1.

Assignments (25)
RELEASE OF SECURITY INTEREST Recorded Nov 14, 2025
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
To: BIRKO CORPORATION; DIVERSEY, INC.; DIVERSEY TASKI, INC.; INNOVATIVE WATER CARE, LLC; SOLENIS TECHNOLOGIES, L.P.
Reel/Frame 073564/0864 →
RELEASE OF 2023 NOTES PATENT SECURITY INTERESTS Recorded Oct 10, 2025
From: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
To: BIRKO CORPORATION; DIVERSEY, INC.; DIVERSEY TASKI, INC.; INNOVATIVE WATER CARE, LLC; SOLENIS TECHNOLOGIES, L.P.
Reel/Frame 073074/0198 →
2023 NOTES PATENT SECURITY AGREEMENT Recorded Jul 7, 2023
From: BIRKO CORPORATION; SOLENIS TECHNOLOGIES, L.P.; INNOVATIVE WATER CARE, LLC; DIVERSEY, INC.; DIVERSEY TASKI, INC.; INNOVATIVE WATER CARE GLOBAL CORPORATION
To: BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 064225/0170 →
SECURITY AGREEMENT (NOTES) Recorded Sep 14, 2022
From: SOLENIS TECHNOLOGIES, L.P.; INNOVATIVE WATER CARE, LLC
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A. AS COLLATERAL AGENT
Reel/Frame 061432/0821 →
RELEASE OF SECURITY INTEREST Recorded Nov 10, 2021
From: CITIBANK, N.A.
To: SOLENIS TECHNOLOGIES, L.P.
Reel/Frame 058848/0636 →
RELEASE OF SECURITY INTEREST Recorded Nov 10, 2021
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
To: SOLENIS TECHNOLOGIES, L.P.
Reel/Frame 058856/0724 →
NOTES SECURITY AGREEMENT Recorded Nov 10, 2021
From: INNOVATIVE WATER CARE, LLC; SOLENIS TECHNOLOGIES, L.P.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 058103/0066 →
TERM LOAN PATENT SECURITY AGREEMENT Recorded Nov 10, 2021
From: INNOVATIVE WATER CARE, LLC; SOLENIS TECHNOLOGIES, L.P.
To: GOLDMAN SACHS BANK USA
Reel/Frame 058102/0407 →
ABL PATENT SECURITY AGREEMENT Recorded Nov 10, 2021
From: INNOVATIVE WATER CARE, LLC; SOLENIS TECHNOLOGIES, L.P.
To: BANK OF AMERICA, N.A.
Reel/Frame 058102/0122 →
FIRST LIEN NOTICE AND CONFIRMATION OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Jul 20, 2018
From: SOLENIS TECHNOLOGIES, L.P.
To: CITIBANK, N.A., COLLATERAL AGENT
Reel/Frame 046595/0241 →
SECOND LIEN NOTICE AND CONFIRMATION OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Jul 20, 2018
From: SOLENIS TECHNOLOGIES, L.P.
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 046629/0213 →
INTELLECTUAL PROPERTY SECOND LIEN SECURITY AGREEMENT RELEASE Recorded Jul 20, 2018
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: SOLENIS TECHNOLOGIES, L.P.
Reel/Frame 047058/0800 →
INTELLECTUAL PROPERTY FIRST LIEN SECURITY AGREEMENT RELEASE Recorded Jul 20, 2018
From: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
To: SOLENIS TECHNOLOGIES, L.P.
Reel/Frame 046594/0252 →
NOTICE AND CONFIRMATION OF GRANT OF SECURITY INTEREST IN PATENTS (SECOND LIEN) Recorded Aug 14, 2014
From: SOLENIS TECHNOLOGIES, L.P.
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 033535/0847 →
NOTICE AND CONFIRMATION OF GRANT OF SECURITY INTEREST IN PATENTS (FIRST LIEN) Recorded Aug 14, 2014
From: SOLENIS TECHNOLOGIES, L.P.
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT
Reel/Frame 033535/0806 →
U.S. ASSIGNMENT OF PATENTS Recorded Aug 4, 2014
From: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC
To: SOLENIS TECHNOLOGIES, L.P.
Reel/Frame 033471/0048 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVE PATENT NUMBER 6763859 PREVIOUSLY RECORDED ON REEL 016408 FRAME 0950. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded May 9, 2014
From: ASHLAND INC.
To: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC
Reel/Frame 032867/0391 →
RELEASE OF PATENT SECURITY AGREEMENT Recorded Mar 18, 2013
From: THE BANK OF NOVA SCOTIA
To: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC; AQUALON COMPANY; ISP INVESTMENTS INC.; HERCULES INCORPORATED
Reel/Frame 030025/0320 →
SECURITY AGREEMENT Recorded Sep 16, 2011
From: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC; HERCULES INCORPORATED; AQUALON COMPANY; ISP INVESTMENT INC.
To: THE BANK OF NOVA SCOTIA, AS ADMINISTRATIVE AGENT
Reel/Frame 026918/0052 →
RELEASE OF PATENT SECURITY AGREEMENT Recorded Sep 15, 2011
From: BANK OF AMERICA, N.A.
To: ASHLAND, INC.; ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC; AQUALON COMPANY; HERCULES INCORPORATED
Reel/Frame 026927/0247 →
SECURITY AGREEMENT Recorded Apr 14, 2010
From: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC; AQUALON COMPANY; HERCULES INCORPORATED
To: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 024225/0289 →
RELEASE OF SECURITY INTEREST Recorded Apr 13, 2010
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC; AQUALON COMPANY; HERCULES INCORPORATED
Reel/Frame 024218/0928 →
SECURITY AGREEMENT Recorded Dec 3, 2008
From: ASHLAND LICENSING AND INTELLECTUAL PROPERTY...; AQUALON COMPANY; HERCULES INCORPORATED
To: BANK OF AMERICA, N.A. AS ADMINISTRATIVE AGENT
Reel/Frame 021924/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 17, 2005
From: ASHLAND INC.
To: ASHLAND LICENSING AND INTELLECTUAL PROPERTY LLC
Reel/Frame 016408/0950 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 17, 2004
From: DECORDT, FRANK L. M.; DAHLBERG, NIKLAS; MIHELIC, JOSEPH; BLACKOWSKI, MICHELLE
To: ASHLAND INC.
Reel/Frame 015145/0726 →