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JP-7856401-B2 - Eyeglass lenses and eyeglasses

JP7856401B2JP 7856401 B2JP7856401 B2JP 7856401B2JP-7856401-B2

Inventors

  • 河野 重利

Assignees

  • ホヤ レンズ タイランド リミテッド

Dates

Publication Date
20260511
Application Date
20211105

Claims (7)

  1. It comprises a lens substrate and an organic layer, The organic layer is a cured layer obtained by curing a curable composition containing at least inorganic particles, a cationic organic compound, and an organosilane compound. An eyeglass lens wherein the inorganic particles include silicon oxide particles, and the cationic organic compound is a methoxysilane-based quaternary ammonium salt represented by the following general formula (1). (In general formula (1), R1 represents an alkyl group having 12 to 24 carbon atoms, R2 and R3 each independently represent an alkyl group having 1 to 6 carbon atoms, and X- represents a halogen ion or an organic carbonyl oxyion.)
  2. The spectacle lens according to claim 1 , wherein the content of the cationic organic compound in the organic layer is 0.5 parts by mass or more per 100 parts by mass of the inorganic particles.
  3. The spectacle lens according to claim 1 or 2 , wherein the content of the cationic organic compound in the organic layer is 0.5 parts by mass or more and 18.0 parts by mass or less per 100 parts by mass of the inorganic particles.
  4. The spectacle lens according to any one of claims 1 to 3 , wherein the content of the cationic organic compound in the organic layer is 0.04% by mass or more.
  5. The spectacle lens according to any one of claims 1 to 4 , wherein the content of the cationic organic compound in the organic layer is 0.04% by mass or more and 2.50% by mass or less.
  6. An eyeglass lens according to any one of claims 1 to 5 , wherein the lens substrate has the organic layer, and the organic layer further has an inorganic layer.
  7. Eyeglasses equipped with eyeglass lenses according to any one of claims 1 to 6 .

Description

This invention relates to eyeglass lenses and eyeglasses. Patent Document 1 discloses an antibacterial synthetic resin molded article obtained by coating the surface of a synthetic resin with an antibacterial surface coating agent containing a polymerizable compound having at least two (meth)acryloyloxy groups in its molecule and a zeolite mainly ion-substituted with silver ions, and then curing the coating. Japanese Patent Application Publication No. 9-327622 [Eyeglass lenses] The following provides a more detailed explanation of the above-mentioned eyeglass lenses. In this invention and specification, "organic layer" refers to a layer containing organic matter, preferably a layer mainly composed of organic matter. Here, the main component is the component that makes up the largest amount in the layer, and can be, for example, a component that accounts for 50% or more, 60% or more, 70% or more, 80% or more, or 90% or more by mass of the layer. Such a main component can be, for example, a component that accounts for 100% or less by mass, less than 100% by mass, 99% or less by mass, 98% or less by mass, 97% or less by mass, 96% or less by mass, or 95% or less by mass of the layer. The same applies to the main component of the inorganic layer described later. One form of the organic layer is a hardened layer known as a hard coat layer, and another form of the organic layer is a base layer described later. Details of these layers will be described later. <Cationic Organic Compounds> The above-mentioned eyeglass lens has an organic layer containing a cationic organic compound. A "cationic organic compound" is an organic compound that can ionize to become a cation (positive ion). Cationic organic compounds can function as antibacterial agents. Therefore, the organic layer containing the cationic organic compound can contribute to the antibacterial properties of the eyeglass lens as an antibacterial layer. Furthermore, the inventors have found that eyeglass lenses having an organic layer containing a cationic organic compound can exhibit excellent light resistance in addition to excellent antibacterial properties. In the above-mentioned organic layer, the cationic organic compound may be included in part or all in the form of a salt, or in part or all in the form of an ionized cation. Also, the above-mentioned organic layer may contain only one type of cationic organic compound, or it may contain two or more types of cationic organic compounds in any mixing ratio. Specific examples of cationic organic compounds include ammonium salts. Ammonium salts are salts of the ammonium ion. The ammonium ion is a monovalent cation represented as " NR₄ + ", where each of the four R's independently represents a hydrogen atom or a substituent. A salt of an ammonium ion in which three of the four R's are hydrogen atoms and the other one is a substituent is a primary ammonium salt; a salt of an ammonium ion in which two of the four R's are hydrogen atoms and the other two are substituents is a secondary ammonium salt; a salt of an ammonium ion in which three of the four R's are substituents and the other one is a hydrogen atom is a tertiary ammonium salt; and a salt of an ammonium ion in which all four R's are substituents is a quaternary ammonium salt. In an ammonium ion containing multiple R's, the multiple R's are either the same or different substituents. From the viewpoint of exhibiting superior antibacterial properties, it is preferable that the cationic organic compound contained in the above organic layer is a quaternary ammonium salt. Specific examples of quaternary ammonium salts include alkoxysilane-based quaternary ammonium salts. Alkoxysilane-based quaternary ammonium salts are quaternary ammonium salts having an alkoxysilyl group. The alkoxysilyl group is a monovalent group represented as "(R 11 O) 3 Si-", where the three R 11s each independently represent an alkyl group. The alkoxysilyl group can be, for example, a methoxysilyl group "(CH 3 O) 3 Si-", an ethoxysilyl group "(CH 3 CH 2 O) 3 Si-", etc. In one embodiment, the above organic layer may contain a methoxysilane-based quaternary ammonium salt, i.e., an ammonium salt having a methoxysilyl group. A specific example of a methoxysilane-based quaternary ammonium salt is the methoxysilane-based quaternary ammonium salt represented by the following general formula (1). In general formula (1), R1 represents an alkyl group having 12 to 24 carbon atoms, R2 and R3 independently represent alkyl groups having 1 to 6 carbon atoms, and X represents a halogen ion or an organic carbonyl oxyion (organic carboxylate ion). Examples of X in general formula (1) include halogen ions such as chloride ions and bromide ions, and organic carbonyl ions (organic carboxylate ions) such as methyl carbonyl oxyion (acetate ion), ethyl carbonyl oxyion (propionate ion), and phenyl carbonyl oxyion (benzoate ion). Examples of C1 -C14 alkyl groups include dodecyl, tridecyl, tetradecyl, pentadecy