摘要:
One embodiment according to the present disclosure relates to a monomer for an optical component, including: a compound represented by the formula (1), in which a pH obtained through a pH measurement method below is 4.0 to 7.5. (pH Measurement method) 80 g of a sample, 80 mL of toluene, and 250 mL of water are mixed together in a liquid separation funnel, an aqueous phase is separated off, and the pH of the aqueous phase is measured.
摘要:
Provided are a plastic optical component with a high cutting ratio of blue light, and a method for producing the plastic optical component. The plastic optical component includes a benzophenone compound represented by formula (1) and an addition polymer obtained by radical polymerization of a monomer. The method for producing the plastic member includes a step of curing a mixture including the monomer, the benzophenone compound represented by formula (1), and a radical initiator.
摘要:
Provided are a polyisocyanate monomer composition for optical members, from which an optical members with which turbidity and clouding are difficult to occur during the production thereof, and which is excellent in transparency, can be obtained, and an optical member and production methods therefor. A polyisocyanate monomer composition for optical members, including 4,4'-diphenylmethane diisocyanate and at least one kind selected from 2,4' -diphenylmethane diisocyanate and 2,2'-diphenylmethane diisocyanate; an optical member formed of a polymer having a structure represented by the following formula (1), and at least one kind of structure represented by the following formula (2) or (3); and a method for producing an optical member, including a step of polymerizing a monomer composition including a polyisocyanate compound including 4,4'-diphenylmethane diisocyanate and at least one kind selected from 2,4' -diphenylmethane diisocyanate and 2,2'-diphenylmethane diisocyanate, and at least one kind selected from a polythiol compound and a polyol compound.
摘要:
One embodiment according to the present disclosure relates to a spectacle lens containing a compound in which the transmittance of light with a wavelength of 410 nm is 5% or less and the transmittance of light with a wavelength of 430 nm is 70% or more under the following transmittance measurement conditions. transmittance measurement conditions: for a sample containing a standard resin from curing 50.28 parts by mass of a mixture of 2,5-bis(isocyanatomethyl)-bicyclo[2.2.1]heptane and 2,6-bis(isocyanatomethyl)-bicyclo[2.2.1]heptane and a mixture of 25.50 parts by mass of pentaerythritol tetrakis(3-mercaptopropionate) and 24.22 parts by mass of 1,2-bis(2-mercaptoethylthio)-3-mercaptopropane and 0.55 parts by mass of the above compound with respect to 100 parts by mass of the standard resin, the sample having a thickness of 1.6 mm at the measurement point, the transmittance of light with a wavelength of 410 nm and 430 nm is measured with a spectrophotometer.
摘要:
Provided is a polymerizable composition for optical components, which can prevent the occurrence of striae while keeping the required strength for optical components even when a thick optical component is produced. A polymerizable composition for optical components of one embodiment of the present invention is a mixture of a first composition including a polyisocyanate compound (A) and a second composition including a polythiol compound (B1) and a thiol group-containing substance (B2), the polymerizable composition further includes the thiol group-containing substance (B2) showing a peak at a position corresponding to a retention time three minutes or more later from a position of a peak of the polythiol compound (B1) in a chromatogram obtained by analyzing the second composition by high performance liquid chromatography (HPLC) analysis, and the equivalent ratio (A/B1) is 80/100 to 95/100, wherein the equivalent ratio (A/B1) represents a ratio of an equivalent A of the polyisocyanate compound (A) calculated using a molecular weight and a functional group number of the polyisocyanate compound (A) to an equivalent B1 of the polythiol compound (B1) calculated using a molecular weight and a functional group number of the polythiol compound (B1).
摘要:
An embodiment of the present disclosure relates to a method for producing an optical component resin, suppressing generation of a foreign matter and occurrence of white turbidity, an optical component resin, a spectacle lens, and spectacles. A method for producing an optical component resin, including: a step of mixing a polythiol component, a polyisocyanate component, and an additive to obtain a polymerizable composition; and a step of polymerizing the polymerizable composition, in which the total moisture content of the additive before mixing is 1.0 ppm by mass or more and 10 ppm by mass or less with respect to the amount of the polyisocyanate component, 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.
摘要:
Provided are a polymerizable composition which can suppress generation of turbidity, optical distortion, and striae in a transparent resin obtained therefrom, a transparent resin obtained from the polymerizable composition, an optical material containing the transparent resin, a plastic lens containing the optical material, and a method for manufacturing the transparent resin. The present invention is a polymerizable composition containing a polythiol compound having at least three mercapto groups and a polyiso(thio)cyanate compound. The polyiso(thio)cyanate compound contains only a polyiso(thio)cyanate compound having no aromatic ring, and a thiol equivalent ratio which is a measured value of a thiol equivalent of the polythiol compound with respect to a theoretical value of the thiol equivalent is 0.900 or more and less than 1.000.
摘要:
An embodiment of the present invention provides: an optical resin composition from which an optical element that has excellent heat resistance can be obtained; an optical element obtained by curing the optical resin composition; and a plastic lens for eyeglasses. [1] An optical resin composition containing a polyiso(thio)cyanate component that includes a compound represented by formula (I-p) or formula (II-p), and a polythiol component that includes a polythiol compound that has sulfide bonds and/or disulfide bonds. [2] An optical element obtained by curing the optical resin composition of [1]. [3] A plastic lens for eyeglasses obtained by curing the optical resin composition of [1].
摘要:
[1] A polymerizable composition for an optical component, including a polyisocyanate component, a polythiol component, and a compound represented by formula (1) in an amount of 5 ppm by mass or more and 10,000 ppm by mass or less with respect to the total amount of the polyisocyanate component and the polythiol component, [2] an optical component resin that is a polymerized product of the polymerizable composition according to the above-described [1], [3] a spectacle lens including a lens substrate that is formed of the optical component resin according to the above-described [2], and [4] spectacles including the spectacle lens according to the above-described [3].
摘要:
An embodiment of the present disclosure relates to 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.