Title:
LIQUID DESCALING COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2000/043480
Kind Code:
A2
Abstract:
The present invention relates to a liquid descaling composition containing a phosphoric acid, a phosphonic acid, a cationic surfactant, an amine oxide and water.
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Inventors:
MEUNIER PHILIPPE
Application Number:
PCT/US2000/001787
Publication Date:
July 27, 2000
Filing Date:
January 24, 2000
Export Citation:
Assignee:
COLGATE PALMOLIVE CO (US)
International Classes:
C11D1/835; C11D3/02; C11D3/20; C11D3/36; C11D1/62; C11D1/75; (IPC1-7): C11D3/00
Foreign References:
| US5821211A | 1998-10-13 | |||
| EP0411708A2 | 1991-02-06 | |||
| EP0666304A1 | 1995-08-09 | |||
| DE3800834A1 | 1989-07-27 | |||
| US5039441A | 1991-08-13 |
Attorney, Agent or Firm:
Nanfeldt, Richard E. (NJ, US)
Download PDF:
Claims:
WHATIS CLAIMED:
| 1. | A cleaning composition comprising approximately by weight: (a) 24% to 36% of phosphoric acid; (b) 0.25% to 5% of a phosphonic acid; (c) 1 % to 10% of an amine oxide; (d) 0.5% to 6% of a cationic surfactant; and (e) the balance being water. |
| 2. | The composition of Claim 1, wherein said phosphonic acid is an amino trialkyl phosphonic acid. |
| 3. | The composition of Claim 2, wherein said cationic surfactant is selected from the group consisting of a CgC14 alkyl benzyl dimethyl ammonium chloride, a Cg C16 dialkyl dimethyl ammonium chloride and a CgC16 alkyl, CgC14 alkyl dimethyl ammonium chloride and mixtures thereof. |
| 4. | The composition of Claim 3, wherein said amine oxide is a cocoamidopropyl dimethyl amine oxide. |
| 5. | The composition of Claim 1 further including a C2C4 alkanol. |
Description:
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