Title:
CLEANING FORMULATION FOR OPTICAL SURFACES
Document Type and Number:
WIPO Patent Application WO2001090288
Kind Code:
A3
Abstract:
A cleaning formulation for removing materials from a surface (e.g., an optical surface, a metal surface and the like), the cleaning formulation comprising from about 0.5 to about 60 weight percent of a compound derived from urea and a phosphorus-containing acid, together with a carrier therefor. A method for removing fouling materials from a surface is also described. The cleaning formulation may be used to remove materials, inter alia, from optical radiation surfaces, optical lens surfaces (e.g., a contact lens) and the like.
Inventors:
KETELSON HOWARD A
BROOK MICHAEL A
BROOK MICHAEL A
Application Number:
PCT/CA2001/000742
Publication Date:
May 02, 2002
Filing Date:
May 25, 2001
Export Citation:
Assignee:
TROJAN TECHN INC (CA)
International Classes:
C11D3/00; C11D3/02; C11D3/06; C11D3/32; C11D3/36; C11D11/00; (IPC1-7): C11D3/32; C11D3/36; C11D3/02
Foreign References:
| DD152940A1 | 1981-12-16 | |||
| US2860106A | 1958-11-11 | |||
| EP0962964A1 | 1999-12-08 | |||
| GB2090855A | 1982-07-21 | |||
| DE19921443A1 | 2000-11-23 |
Other References:
DATABASE WPI Week 199515, Derwent World Patents Index; AN 1995-113700, XP002185498
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