Title:
ALKALINE METAL CLEANER
Document Type and Number:
WIPO Patent Application WO2003029393
Kind Code:
A3
Abstract:
The present invention is directed to cleaning compositions for metal surfaces, including both concentrate and ready-to-use solutions. These compositions include a source of calcium ion, a source of alkalinity, a chelating agent, and a surfactant. In some embodiments, a water-soluble or water-dispersible acid-substituted polymer is also included. Additionally, in some embodiments, specific surfactants or chelating agents are used to enhance the performance of the composition.
Inventors:
RUHR RICHARD O
LEVITT MARK D
RICHARDSON EDWARD H
MAN VICTOR F
LEVITT MARK D
RICHARDSON EDWARD H
MAN VICTOR F
Application Number:
PCT/US2002/027368
Publication Date:
September 18, 2003
Filing Date:
August 27, 2002
Export Citation:
Assignee:
ECOLAB INC (US)
International Classes:
C11D3/37; C11D11/00; C23G1/22; C11D1/14; C11D1/72; (IPC1-7): C11D3/02; C11D3/12; C11D3/00; C11D3/20; C11D3/37
Domestic Patent References:
| WO1996029451A1 | 1996-09-26 | |||
| WO1998020103A1 | 1998-05-14 | |||
| WO1999020734A1 | 1999-04-29 | |||
| WO1998038269A1 | 1998-09-03 | |||
| WO1998029527A1 | 1998-07-09 |
Foreign References:
| DE1937841A1 | 1970-03-12 | |||
| US5710120A | 1998-01-20 | |||
| US4507219A | 1985-03-26 | |||
| US5030378A | 1991-07-09 | |||
| US5489531A | 1996-02-06 |
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