Patent ID: 10196498

Abstract:
A method for making a colored film includes following steps of providing a mixture comprising a hydrophilic monomer, a functionalized vinylic monomer, a clay, a cross-linking agent, and an initiator; mixing a pigment and a solvent with the mixture to form a colored material; and placing the colored material into a mold, and exposing the colored material to ultraviolet radiation or heating the colored material, to cause the hydrophilic monomer, the functionalized vinylic monomer, the cross-linking agent, and the initiator in the colored material to undergo a polymerization reaction to form a cross-linking network, and the clay in the colored material to be dispersed in the cross-linking network, thereby forming the colored film. The disclosure also provides a colored film made by above method, a colored material making for the colored film, and an ophthalmic lens.