摘要:
A safe ocular lens material which is excellent in oxygen permeability, surface wettability by water, and lubricity/wettability, is reduced in surface tackiness, has excellent flexibility and resilience, and gives a final product inhibited from releasing monomers therefrom. The ocular lens material comprises (A) at least one compound having a polydimethylsiloxane structure and an ethylenically unsaturated group bonded thereto through a urethane bond and (B) at least one pyrrolidone derivative having a methylene group as a polymerizable group.
摘要:
An azo colorant being superior in elution resistance from an ophthalmic lens material and miscibility with a monomer for an ophthalmic lens, and capable of coloring with various hues is provided. Also provided are an ophthalmic lens material that achieves reduced elution of a colorant and is uniformly colored, a method for producing an ophthalmic lens material, and an ophthalmic lens. A monoazo colorant for coloring an ophthalmic lens represented by the following general formula (1). The ophthalmic lens material of the present invention is produced from a composition containing the monoazo colorant, and a monomer for an ophthalmic lens having a polymerizable group, and thus contains a copolymer of the monoazo colorant and the monomer for an ophthalmic lens.
摘要:
An ocular-lens material which comprises a copolymer obtained by polymerizing polymerizable ingredients consisting mainly of a polysiloxane macromonomer (A), a silicon-containing alkyl methacrylate (B), hydrophilic monomers (C) consisting of NVP (C-1) and other hydrophilic monomer (C-2), other monomer(s) (D), and low-molecular crosslinking monomers (E) consisting of a crosslinking monomer (E-1) having an acryloyl, vinyl, or allyl group and a methacryloyl group and a crosslinking monomer (E-2) having two or more methacryloyl groups by the casting method with heating and ultraviolet irradiation, wherein [(A)+(B)]/(C) (by weight) is 30/70 to 70/30, (A)/(B) is 25/75 to 75/25, (C-1)/(C-2) is 50/50 to 100/0, and (D) accounts for 0 to 20 wt.% of the polymerizable ingredients. The ocular-lens material has high permeability to oxygen and high mechanical strength. The surface of the material has excellent wettability by water and low-friction properties.