	US 7,560,421 B2
	Method of disinfecting contact lens and disinfecting liquid for the method
Kazuhiko Nakada, Nisshin (Japan); and Kotaro Sakanishi, Komaki (Japan)
Assigned to Menicon Co., Ltd., Nagoya-Shi (Japan)
Filed on Aug. 14, 2003, as Appl. No. 10/640,811.
Claims priority of application No. 2002-238953 (JP), filed on Aug. 20, 2002; and application No. 2003-286467 (JP), filed on Aug. 05, 2003.
Prior Publication US 2004/0038956 A1, Feb. 26, 2004
Int. Cl. C11D 3/00 (2006.01); A01N 39/00 (2006.01); A61L 2/00 (2006.01); C09B 47/04 (2006.01)

U.S. Cl. 510—112 [514/839; 514/840; 424/616; 422/28; 540/122; 540/131]

13 Claims

1. A method of disinfecting a contact lens comprising the steps of:

preparing a disinfecting liquid comprising at least one metal phthalocyanine compound represented by the following formula (I) and hydrogen peroxide, wherein said at least one metal phthalocyanine compound is dissolved in an aqueous medium,

wherein M is zinc, aluminium, copper, iron, nickel, cobalt, gallium, aluminium chloride or gallium chloride, and each of R¹-R⁸is independently selected from a group consisting of a hydrogen atom, a halogen atom, a carboxyl group or an alkali metal or ammonium salt thereof, a sulfone group or an alkali metal or ammonium salt thereof, a quaternary ammonium group represented by the following formula (II), and an amine group represented by the following formula (III),

wherein R⁹is an alkylene group having 2-6 carbon atoms or an oxyalkylene group having 2-6 carbon atoms, and each of R¹⁰-R¹²is independently selected from alkyl groups having 1-6 carbon atom(s),

wherein each of R¹³and R¹⁴is independently selected from a group consisting of a hydrogen atom and —CO—A group in which A is an alkyl group having 7-17 carbon atoms, a vinyl group, 1-methylvinyl group, a methacryloyl group or an acryloyl group;

immersing a non-water absorptive contact lens in said disinfecting liquid; and

irradiating said disinfecting liquid in which said non-water absorptive contact lens is immersed with a light.