Cleaning formulation for optical surfaces

Details Cleaning formulation for optical surfaces Cleaning formulation for optical surfaces

C - Chemistry, Metallurgy

11

D

C11D 3/32 (2006.01) C11D 3/00 (2006.01) C11D 3/02 (2006.01) C11D 3/06 (2006.01) C11D 3/36 (2006.01) C11D 11/00 (2006.01)

Patent

CA 2410264

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.

L'invention concerne une formulation de nettoyage servant à éliminer des matières d'une surface (p. ex. d'une surface optique, métallique et analogue). La formulation de nettoyage contient d'environ 0,5 à environ 60 pour cent en poids d'un composé dérivé de l'urée et d'un acide contenant du phosphore, ainsi qu'un excipient. L'invention concerne aussi un procédé visant à éliminer des matières de salissures d'une surface. La formulation de nettoyage peut servir à éliminer des matières, entre autres, de surfaces optiques protégeant contre le rayonnement, de surfaces de lentilles optiques (p. ex. verre de contact) et analogue.

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