IP Library › Granted Patent US 8,440,212
Granted Patent B2
US 8,440,212 · App. 12/806,074 · Granted May 14, 2013

Compositions for treating water systems

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Quick Facts
Patent No.
US 8,440,212
App. No.
12/806,074
Granted
May 14, 2013
Kind
B2
Abstract

The present invention relates to treatment of water, and more specifically to treatment of water using a stable formulation of polyhexamethylene biguanide (PHMB) and a liquid or solid zinc salt for the application and prevention algae in recirculated and stagnant water systems. The invention also encompasses methods of treating water that already contains PHMB.

Claims (8)

1. A method of controlling algae in a body of recirculating or stagnant water, comprising the steps of:

providing a body of recirculating or stagnant water containing polyhexamethylene biguanide (PHMB); and

adding a zinc salt.

2. The method of claim 1 , wherein said zinc salt is selected from the group consisting of zinc sulfate monohydrate (ZnSO 4 .H 2 ), zinc sulfate heptahydrate (ZnSO 4 .7H 2 O), zinc carbonate (ZnCO 3 ), zinc nitrate (Zn(NO 3 ) 2 ), zinc borate, zinc hydroxide, zinc phosphate, and combinations thereof.

3. The method of claim 1 , wherein said adding step comprises adding said zinc salt to establish a final concentration of zinc ion of between 0.1 and 5 PPM.

4. The method of claim 1 , wherein said adding step comprises adding said zinc salt to establish a final concentration of zinc ion of between 0.5 and 3.0 PPM.

5. The method of claim 1 , wherein said PHMB is present in said body of recirculating or stagnant water in a concentration of up to 20 PPM.

6. The method of claim 5 , wherein said PHMB concentration ranges from 2 to 15 PPM.

Assignments (18)
SECURITY INTEREST Recorded Nov 14, 2025
From: CHEM-AQUA, INC.; DIVERSEY, INC.; DIVERSEY TASKI, INC.; INNOVATIVE WATER CARE, LLC; NCH CORPORATION; NCH LIFE SCIENCES LLC; SOLENIS TECHNOLOGIES, L.P.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 073570/0838 →
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 →
SECURITY AGREEMENT (NOTES) Recorded Oct 10, 2025
From: DIVERSEY, INC.; DIVERSEY TASKI, INC.; INNOVATIVE WATER CARE, LLC; SOLENIS TECHNOLOGIES, L.P.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 073061/0885 →
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 →
SECURITY AGREEMENT (2024 NOTES) Recorded Jun 24, 2024
From: BIRKO CORPORATION; DIVERSEY, INC.; DIVERSEY TASKI, INC.; INNOVATIVE WATER CARE, LLC; SOLENIS TECHNOLOGIES, L.P.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
Reel/Frame 067824/0278 →
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 →
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 →
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 →
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 →
RELEASE OF SECURITY INTEREST AT REEL 048676 FRAME 0131 Recorded Nov 9, 2021
From: BANK OF AMERICA, N.A.
To: INNOVATIVE WATER CARE, LLC
Reel/Frame 058081/0970 →
RELEASE OF SECURITY INTEREST AT REEL 048695 FRAME 0069 Recorded Nov 9, 2021
From: BANK OF AMERICA, N.A.
To: INNOVATIVE WATER CARE, LLC
Reel/Frame 058082/0191 →
RELEASE OF SECURITY INTEREST AT REEL 048682 FRAME 0494 Recorded Nov 9, 2021
From: BANK OF AMERICA, N.A.
To: INNOVATIVE WATER CARE, LLC
Reel/Frame 058082/0176 →
SECOND LIEN SECURITY AGREEMENT Recorded Mar 26, 2019
From: INNOVATIVE WATER CARE, LLC
To: BANK OF AMERICA, N.A.
Reel/Frame 048695/0069 →
FIRST LIEN SECURITY AGREEMENT Recorded Mar 25, 2019
From: INNOVATIVE WATER CARE, LLC
To: BANK OF AMERICA, N.A.
Reel/Frame 048682/0494 →
SECURITY AGREEMENT Recorded Mar 22, 2019
From: INNOVATIVE WATER CARE, LLC
To: BANK OF AMERICA, N.A.
Reel/Frame 048676/0131 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 8, 2019
From: ARCH CHEMICALS, INC.
To: INNOVATIVE WATER CARE, LLC
Reel/Frame 048546/0682 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 24, 2010
From: UNHOCH, MICHAEL J.; BROWN, PATRICIA
To: ARCH CHEMICAL, INC.
Reel/Frame 025046/0474 →