[12] Patent
[11] Patent No.:GC0004574  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2016                32/2016  
Number of the Decision to Grant the Patent:2016/90292
Date of the Decision to Grant the Patent:28/Dec/2016

[21] Application No.:GCC/P/2008/11991

[22] Filing Date:21/10/2008

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
22/10/2007
11/876,375

[72] Inventors:1- Peter Blokker ،2- Jasbir S. Gill،3- Paloma Lopez-Serrano

[73] Owner: NALCO COMPANY, 1601 West Diehl Road , in Naperville, Illinois 60563-1198 , USA

[74] Agent: Suleiman I. Al-Ammar Law Office

  

 

  

[51]IPC:
Int. Cl.: C02F5/12, 5/14; 103/08; (2006.01)

[56] Cited Documents:

-US 5128045 A (PA RSO 'S JENNIFER R I SI ET AL)7 July 1992
-US 5023000 A (KNELLER JAMES F IU et al.) 11 June 1991
-US 5358640 A (ZEIHER E H KELLE IUS!; et al.)25 October 1994
 
Examiner: Eng. Ebrahim AlQurashi

[54] METHOD OF INHIBITING SCALE FORMATION AND DEPOSITION IN DESALINATION SYSTEMS
[57] Abstract: This invention relates to an improved method of inhibiting corrosion and calcium sulfate and calcium carbonate scaling in thermal and membrane desalination processes. The method includes adding a composition having an acrylic acid 2-acrylamido-2-methylpropyl sulfonic acid copolymer, optionally combined with an oligomeric phosphinosuccinic acid to seawater or recirculation brine in a desalting process to produce water for drinking and industrial applications. The method also includes adding a composition including mono, bis, and oligomeric phosphinosuccinic acid adducts to the desalting process.
No. of claims: 19


 

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