Title:
ANTIMICROBIAL COMPOSITIONS
Document Type and Number:
WIPO Patent Application WO/2002/055647
Kind Code:
A1
Abstract:
The invention relates to an antimicrobial cleaning composition which is designed in particular for the hygienic cleaning of hard surfaces. The composition comprises a synergistically active antimicrobial mixture of (i) hydrogen peroxide or a precursor thereof and (ii) picolinic acid; characterised in that the molar ratio of picolinic acid to hydrogen peroxide (or precursor thereof generating the equivalent amount of hydrogen peroxide) ranges from 1:30 to 100:1. The synergistic effects of the picolinic acid with hydrogen peroxide are particularly pronounced against a broad spectrum of microbes.
Inventors:
BHAKOO MANMOHAN
STEELE KAREN ANNE
THOMPSON KATHERINE MARY
THORNTHWAITE DAVID WILLIAM
STEELE KAREN ANNE
THOMPSON KATHERINE MARY
THORNTHWAITE DAVID WILLIAM
Application Number:
PCT/EP2001/015387
Publication Date:
July 18, 2002
Filing Date:
December 28, 2001
Export Citation:
Assignee:
UNILEVER PLC (GB)
UNILEVER NV (NL)
LEVER HINDUSTAN LTD (IN)
UNILEVER NV (NL)
LEVER HINDUSTAN LTD (IN)
International Classes:
A61K8/02; A61K8/04; A61K8/19; A61K8/22; A61K8/38; A61K8/42; A61K8/44; A61K8/49; A61K8/63; A61Q11/00; A61Q15/00; C11D3/28; C11D3/33; C11D3/39; C11D3/48; (IPC1-7): C11D3/48; C11D3/28; C11D3/39; C11D3/33
Foreign References:
| US5472619A | 1995-12-05 | |||
| EP0906950A1 | 1999-04-07 | |||
| EP1010750A1 | 2000-06-21 | |||
| EP0624640A2 | 1994-11-17 |
Attorney, Agent or Firm:
Griffiths, Helen Sarah (Patent Department Colworth House Sharnbrook
Bedford Bedfordshire MK44 1LQ, GB)
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Claims:
CLAIMS
| 1. | An antimicrobial cleaning composition suitable for the hygienic cleaning of hard surfaces, which composition comprises a synergistically active antimicrobial mixture of (i) hydrogen peroxide or a precursor thereof and (ii) picolinic acid; characterised in that the molar ratio of picolinic acid to hydrogen peroxide (or precursor thereof generating the equivalent amount of hydrogen peroxide) ranges from 1: 30 to 100: 1. |
| 2. | A composition according to claim 1, in which the amount of hydrogen peroxide (or precursor thereof generating the equivalent amount of hydrogen peroxide), ranges from 0.0003% to 5%, more preferably from 0.003% to 1.5%, most preferably from 0.03% to 0.5%, by weight based on total weight of the composition. |
| 3. | A composition according to claims 1 or 2, in which the amount of picolinic acid ranges from 0.01% to 10%, more preferably from 0.1% to 5%, most preferably from 0.15% to 2.5%, by weight based on total weight of the composition. |
| 4. | A composition according to any of claims 1 to 3, in which the molar ratio of picolinic acid to hydrogen peroxide (or precursor thereof generating the equivalent amount of hydrogen peroxide) ranges from 1: 30 to 75: 1, more preferably from 1: 20 to 75: 1, most preferably from 1: 10 to 50: 1. |
| 5. | The use of a composition according to any of claims 1 to 4, for the hygienic cleaning of hard surfaces. |
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