Colorant for lens of eye, lens material charge for eye, production method of lens for eye and lens for eye

摘要

This invention is shown with general system (1), (2) and (3) is the colorant for the lens of the eye which features that it consists of the azo pigment which possesses the polymerization possible functional group which. According to main invention the description above, as it is superior in resistance liquation characteristic, denaturation such as hydrolysis is difficult to be caused, it is stability, in addition, introducing the specified polymerization characteristic basis, there are no times when the color tone of the raw materials pigment changes, the colorant for the lens of the eye of red - purple - blue new structure, the lens material for the eye, production method of the lens for the eye and it is possible to offer the lens for the eye.