A polymerizable composition comprising: an episulfide compound represented by the following Formula (1); a polyiso(thio)cyanate compound; a polythiol compound; and an epoxy compound (X) which contains one or more epoxy groups within one molecule, and which does not contain an episulfide group. In Formula (1), Y represents a substituted or unsubstituted linear hydrocarbon group having from 1 to 4 carbon atoms, a substituted or unsubstituted branched hydrocarbon group having from 2 to 4 carbon atoms, a substituted or unsubstituted cyclic hydrocarbon group having from 3 to 6 carbon atoms, a substituted or unsubstituted 1,4-dithiane group, a substituted or unsubstituted arylene group, or a substituted or unsubstituted aralkylene group; m represents an integer from 0 to 2; and n represents an integer from 0 to 3:

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A polymerizable composition comprising: an episulfide compound represented by the following Formula (1); a polyiso(thio)cyanate compound; a polythiol compound; and an epoxy compound (X) which contains one or more epoxy groups within one molecule, and which does not contain an episulfide group. In Formula (1), Y represents a substituted or unsubstituted linear hydrocarbon group having from 1 to 4 carbon atoms, a substituted or unsubstituted branched hydrocarbon group having from 2 to 4 carbon atoms, a substituted or unsubstituted cyclic hydrocarbon group having from 3 to 6 carbon atoms, a substituted or unsubstituted 1,4-dithiane group, a substituted or unsubstituted arylene group, or a substituted or unsubstituted aralkylene group; m represents an integer from 0 to 2; and n represents an integer from 0 to 3:

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A lacquer composition is provided, comprising 20%-79.9% by weight, based on the total weight of the composition, of a thiol compound having two or more thiol groups, 20%-79.9% by weight, based on the total weight of the composition, of a compound having two or more carbon-carbon double bonds and 0.1%-10% by weight, based on the total weight of the composition, of a separating agent having an alkyl radical having 4-20 carbon atoms, where the alkyl radical is unsubstituted or fluorine-substituted and the alkyl radical is bonded to a functional group. Also provided are the use of this lacquer composition as a protective lacquer on an optical surface of an optical element in the production of the optical element, and an optical element comprising the protective lacquer.

An embodiment relates to an aromatic polythiol compound for optical materials, and the aromatic polythiol compound according to the embodiment contains a phenyl group and a large number of sulfur atoms in its polythiol structure so that a polymerizable composition and an optical material obtained therefrom have excellent optical properties such as high refractive index and low specific gravity, as well as excellent mechanical properties such as low cure shrinkage; thus, they can be advantageously used for producing various plastic optical lenses such as eyeglass lenses and camera lenses.

A method for producing an optical component resin, suppressing yellowing due to addition of an ultraviolet absorber, an optical component resin, a spectacle lens, and spectacles. A method for producing an optical component resin, including a step of polymerizing a polymerizable composition containing a polythiol component, a polyisocyanate component, and an ultraviolet absorber, in which the ultraviolet absorber has a Hazen color number (APHA) of 40 or less in a toluene solution thereof having a concentration of 10% by mass, an optical component resin obtained by the producing method, an optical component formed of the optical component resin, a spectacle lens including a lens substrate formed of the optical component resin, and spectacles including the spectacle lens.

A method for producing an optical component resin, suppressing yellowing due to addition of an ultraviolet absorber, an optical component resin, a spectacle lens, and spectacles. A method for producing an optical component resin, including a step of polymerizing a polymerizable composition containing a polythiol component, a polyisocyanate component, and an ultraviolet absorber, in which the ultraviolet absorber has a Hazen color number (APHA) of 40 or less in a toluene solution thereof having a concentration of 10% by mass, an optical component resin obtained by the producing method, an optical component formed of the optical component resin, a spectacle lens including a lens substrate formed of the optical component resin, and spectacles including the spectacle lens.

Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured.

Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured.

The present invention relates to an eyeglass lens comprising a substrate made of an optical material comprising a polymer matrix and at least one 2-(2-hydroxy-5-R.sup.1-phenyl)benzotriazole, in which R.sup.1 is a resonant group, the optical transmittance through a 2 mm thick layer of said optical material being lower than 1% for each light wavelength ranging from 280 to 405 nm. This eyeglass lens protects from phototoxic blue light and UV light.

The present invention relates to an eyeglass lens comprising a substrate made of an optical material comprising a polymer matrix and at least one 2-(2-hydroxy-5-R.sup.1-phenyl)benzotriazole, in which R.sup.1 is a resonant group, the optical transmittance through a 2 mm thick layer of said optical material being lower than 1% for each light wavelength ranging from 280 to 405 nm. This eyeglass lens protects from phototoxic blue light and UV light.