[Object]

Provided are a plastic lens and spectacles having a high HEV cut rate represented as 100−(average transmittance in a wavelength range of not less than 400 nm and not greater than 420 nm).

[Solution]

A plastic lens according to the present invention includes a plastic lens base material obtained as a result of curing of a polymerizable compound having mixed therein a benzotriazole compound represented by general formula (1) below. Spectacles according to the present invention is produced by using the above-described plastic lens as a plastic spectacle lens.

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A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing an aromatic ring, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from 0.010 parts by mass to 0.50 parts by mass, and the viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa.Math.s to 1,000 mPa.Math.s.

The invention relates to compounds and methods for extending the pot life of mixtures of isocyanates and isocyanate-reactive compounds when using acidic phosphoric acid ester as a mould release agent.

Provided is a method for producing a resin lens, comprising: A) mixing a polyisocyanate, a modified isocyanate, a catalyst and a release agent, and performing vacuum defoaming at 0˜30° C. for 10˜90 min to obtain a material a; B) mixing the material a with a sulfur-containing compound, and performing vacuum defoaming at 15˜20° C. for 20˜120 min to obtain mixed monomers; and C) completing casting of the mixed monomers, and curing to obtain a resin lens. The present disclosure uses polyisocyanate and a modified isocyanate at the same time to prepare a resin lens with higher glass transition temperature and higher surface hardness without producing bank mark and edge fogging. The present disclosure further provides a method for producing modified isocyanate. The obtained modified isocyanate used with polyisocyanate further improves the glass transition temperature and surface hardness of the resin lens without producing bank mark and edge fogging.

The disclosure provides a novel method for producing a polymerizable composition for optical materials, in which the occurrence of gelation is suppressed even though an organophosphorus compound is used during the preparation of a polymerizable composition for optical materials of a thiourethane-based resin having a high refractive index and suppressed coloration, and the like. A method for producing a polymerizable composition for optical materials, the method including: a step of providing an organophosphorus compound, a polyisocyanate, a first polythiol, and a second polythiol; and a step of mixing the polyisocyanate and the first and second polythiols in the presence of the organophosphorus compound to obtain a polymerizable composition for optical materials, wherein, in the mixing step, the first polythiol and the second polythiol are mixed in advance to prepare a polythiol mixture, and then the polythiol mixture is mixed with the polyisocyanate.

It is an object of the present invention to provide a monomer which can provide a cured product having both high toughness and rigidity. The present invention is a (meth)acrylate (D) which is a reaction product of a thiol compound (A) having two or more mercapto groups; an iso(thio)cyanate compound (B) having two or more iso(thio)cyanato groups; and a hydroxy (meth)acrylate compound (C) having one or more polymerizable groups.

Disclosed herein are compositions and kits of materials for forming a component of a rigid gas permeable lens. An exemplary composition comprises a hydroxyl terminated polyurethane pre-polymer having an average of more than one hydroxyl group per molecule comprising: i) the residue of an aliphatic diisocyanate, a block of comprising polysiloxane and a block comprising hydrophobic poly(alkylene oxide), or ii) the residue of an aliphatic diisocyanate, a block comprising fluoroalkyl or fluoroalkyl ether, and a block of comprising hydrophobic poly(alkylene oxide). The composition further comprises a free aliphatic diisocyanate and a monomeric polyol, or a propoxylate thereof. The average number of hydroxyl groups of the hydroxyl terminated pre-polymer plus the average number of hydroxyl groups of the monomeric polyol, or a propoxylate thereof is equal to from 4.5 to 5.5. Kits of materials comprising elements that when combined form the composition are also disclosed. Further disclosed are articles and ocular devices comprising components formed from the compositions or kits.

Provided herein are polymers having a polymer backbone including a zwitterionic precursor monomeric unit having a secondary or tertiary amine in the polymer backbone, as well as methods of making and using the same.

The present application realizes an anti-reflection film or the like that is a layered product having low surface reflectivity, excellent thermoformability, and satisfactory abrasion resistance. This anti-reflection film includes: a base material layer including a thermoplastic resin; and a low-refractive-index layer which is stacked on at least one surface of the base material layer and which has a refractive index that is lower than the refractive index of the base material layer, wherein the low-refractive-index layer includes a polymer of a first resin material including a fluorine-containing urethane acrylate and a (meth)acrylate.

Two-component solventless polyurethane adhesive compositions comprising an isocyanate component and an isocyanate-reactive component are disclosed, the compositions comprising an isocyanate component comprising an isocyanate-terminated prepolymer, and an isocyanate-reactive component comprising a polyether polyol, a phosphate ester adhesion promoter, and, a bio-based polyol. Methods for forming laminate structures are also disclosed, the methods comprising forming an adhesive composition by mixing an isocyanate adhesive component comprising an isocyanate-terminated prepolymer and an isocyanate-reactive adhesive component comprising a polyether polyol, a phosphate ester adhesion promoter, and a bio-based polyol, applying the adhesive composition to a surface of a first substrate, and bringing a surface of a second substrate into contact with the adhesive composition on the surface of the first substrate, thereby forming the laminate structure. Laminate structures are also disclosed.