C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/37 (2006.01) A61L 2/18 (2006.01) A61L 12/14 (2006.01) C11D 3/00 (2006.01) G02C 13/00 (2006.01)
Patent
CA 2253840
The invention is directed to compositions and methods used as in-the-eye and/or out-of-eye inhibitors of proteinaceous deposits on hydrophilic contact lenses. Compositions of the present invention comprise moderately charged polyquaternium polymers that selectively bind to hydrophilic contact lenses to block the binding of proteinaceous materials. Compositions of the present invention may be used in multipurpose cleaning solutions for contact lenses and can eliminate the need for special enzyme cleaners and the like for removing proteinaceous materials.
L'invention concerne des compositions ainsi que des procédés utilisés en tant qu'inhibiteurs, dans l'oeil et/ou hors de celui-ci, de dépôts protéiniques sur des lentilles de contact hydrophiles. Les compositions de la présente invention comprennent des copolymères quaternaires modérément chargés qui se fixent de façon sélective sur des lentilles de contact hydrophiles afin d'empêcher la fixation sur celles-ci de matières protéiniques. On peut utiliser les compositions de l'invention dans des solutions de nettoyage polyvalentes pour lentilles de contact, et on peut ainsi supprimer l'utilisation de nettoyants enzymatiques spéciaux et analogues pour enlever les matières protéiniques.
Heiler David J.
Maier Stephen E.
Spooner Susan P.
Bausch & Lomb Incorporated
Osler Hoskin & Harcourt Llp
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