SILICONE HYDROGEL CONTACT LENS AND METHOD FOR MANUFACTURING THE SAME

摘要

The present invention discloses a method for manufacturing a silicone hydrogel, including the steps of preparing a polyethylene glycol-containing secondary or tertiary amino alcohol, a crosslinking agent having at least two epoxide rings, and a copolymerization mixture capable of performing a radical chain polymerization reaction, wherein the copolymerization mixture contains a linear silicone prepolymer, a silicone monomer, and a hydrophilic monomer, the linking process is activated, by heating to let the epoxide rings of the crosslinking agent open and respectively links with the amino alcohol and an one component of the copolymerization mixture, and completing the radical chain polymerization reaction to obtain a silicone hydrogel. The present invention also provides a contact lens manufactured by the aforementioned method. The present invention distributes and affixes polyethylene glycol of the amino alcohol onto the surface of the silicone hydrogel, thus providing hydrophilicity and electrical charges to the silicone hydrogel.

主权项

1. A method for manufacturing a silicone hydrogel, comprising the steps of:
preparing an amino alcohol, comprising: a crosslinking agent having at least a first epoxide ring and a second epoxide ring; and a copolymerization mixture capable of performing a radical chain polymerization reaction, wherein the copolymerization mixture is comprised of a linear silicone prepolymer, a silicone monomer, and a hydrophilic monomer; and performing the radical chain polymerization reaction to obtain a silicone hydrogel, and performing a linking process before, simultaneously with, or after performing the radical chain polymerization reaction, the crosslinking agent is activated by heating, to let the first epoxide ring open and link with the amino alcohol and to let the second epoxide ring open and link with any one component of the copolymerization mixture, wherein the amino alcohol is represented by formula (1): wherein R of formula (1) is either a hydrogen atom or a linear chain of 12-16 carbon atoms, and a sum of x of formula (1) and y of formula (1) falls within the range of 2 to 100.