Silicone-containing ocular lens material with high safety and preparing method thereof
AssigneeMenicon Co., Ltd.
InventorsMasaki Baba, Tsuyoshi Watanabe
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Abstract
The present invention provides a safe ocular lens material having high oxygen permeability, excellent surface wettability, the excellent lubricity/easy lubricating property of surface, little in surface adhesive and superior flexibility and stress relaxation, in addition, suppressing elution of a monomer from the final product. That is, the present invention relates to an ocular lens material comprising at least one kind of a compound (A) having an ethylenically unsaturated group and polydimethylsiloxane structure through a urethane bond and at least one kind of a pyrrolidone derivative (B) in which a polymerizable group is a methylene group.
Claims36
An ocular lens material comprising at least one kind of a compound (A) having an ethylenically unsaturated group and polydimethylsiloxane structure through a urethane bond and at least one kind of a pyrrolidone derivative (B) in which a polymerizable group is a methylene group.
A method for preparing an ocular lens material, comprising
- a) a step of obtaining a mixed solution comprising at least one kind of a compound (A) having ethylenically unsaturated groups and polydimethylsiloxane structures through a urethane bond and a hydrophilic monomer (B) comprising at least one kind of a pyrrolidone derivative in which a polymerizable group is a methylene group and an photo polymerization initiator and/or a thermal polymerization initiator,
- b) a step of introducing said mixed solution to a mold,
- c) a step of obtaining an ocular lens material cured by irradiating UV light on and/or heating the mixed solution in said mold,
- d) a step of carrying out surface treatment to said ocular lens material after demolding said ocular lens material to impart hydrophilicity and deposit resistance,
- e) a step of removing an unreacted component from said ocular lens material, and
- f) a step of hydrating said ocular lens material.
Dependencies are inferred from the claim text.