Tokuyama Corporation

Nec Corporation

Junji Momoda

Junji Takenaka

Katsuhiro Mori

Shinobu Izumi

Hironobu Nagoh

Yasutomo Shimizu

Yuichiro Kawabata

Tadashi Hara

Masayuki Miyazaki

Takayoshi Kawasaki

Ayako Ohara

Taichi Hanasaki

Toshimitsu Hiraren

Kazuhiro Teranishi

Mitsuyoshi Sando

Toshiaki Takahashi

Toshiaki Otani

Hironobu Nagou

Naoto Takahashi

Hiromasa Yamamoto

Takashi Kobayakawa

Tsuneyoshi Tanizawa

Nobuyuki Tanaka

Shingo Matsuoka

Takashi Tamukai

Yasuko Komuro

Takao Noguchi

Takashi Ogura

Masahiko Ishida

Junichi Fujita

Satoshi Imura

Yukinori Ochiai

Yasuko Takeda

Michihito Nakatani

Mitsuki Tochi

Nobumasa Kuwashima

Yoshihiro Asahara

Noriaki Tahara

Tomohiro Kawamura

Toshiaki Ohtani

Mayumi Kishi

Arihiro Iwata

Eiji Oshima

Miyazaki Masayuki

A chromene compound which can exhibit excellent photochromic properties. The chromene compound is represented by the following formula (1). In the formula, at least one of Ror Rrepresents the group having the radical-polymerizable group, wherein the group having a radical-polymerizable group is represented by the following formula (2) (wherein Rrepresents a linear or branched alkylene group having 1 to 10 carbon atoms and 1 represents an integer of from 0 to 50); and the ring Z that is represented by the following formula (Z) and is spiro-bonded to a carbon atom located at position-13 in the formula (1) is preferably an aliphatic cyclic group that may have a substituent, the group having 3 to 20 carbon atoms for forming the ring together with the carbon atom at the 13-position, or the like.

Chromene compound and photochromic optical article

Provided is a moisture curable polyurethane composition that is a moisture curable polyurethane having an isocyanate group on one end of a molecule thereof. The moisture curable polyurethane composition contains a moisture curable polyurethane (A) and an organic solvent (B). The moisture curable polyurethane (A) is obtainable by reacting a polyisocyanate compound having at least two isocyanate groups in a molecule thereof (A1) with a low-molecular weight polyol compound having at least two hydroxyl groups in a molecule thereof and having a number average molecular weight of 50-300 (A2). Also provided is a laminate including an optical substrate and a polyurethane resin layer comprising the moisture curable polyurethane composition.

Moisture curable polyurethane composition and laminate

A photochromic hydroxyurethane compound of the present invention is characterized in that, on condition of having at least one photochromic moiety as the photochromic minimal unit in a molecule, it has a hydroxyurethane constitutional unit represented by Formula (1):—X—O—CO—NH—  (1)In the formula, X is an oxygen-containing chain organic group having a hydroxyl group as a substituent, or a hydrogen atom in the hydroxyl group is substituted by any one of (A): a photochromic group having the photochromic moiety; (B): a polymerization reactive group having a polymerizable substituent; (C) an alkyl group having 1 to 10 carbon atoms; (D) a cycloalkyl group having 3 to 10 carbon atoms; or (E): an aryl group having 6 to 14 carbon atoms (each of the groups (C)-(E) can be bonded to an oxygen atom derived from the hydroxyl group via the oxygen-containing chain organic group).

Photochromic hydroxyurethane compound

A functional lens having a functional laminate (A) including a first optical sheet (Aa), a second optical sheet (Ab) and a functional layer (Ac) existent between these two sheets and having photochromic properties and/or polarizability and a synthetic resin layer (B) existent on at least one of the first optical sheet (Aa) and the second optical sheet (Ab) of the functional laminate (A), and adhesive strength between the first optical sheet (Aa) and/or the second optical sheet (Ab) and the synthetic resin layer (B) is not less than 50 N, wherein the reactive functional group of the surface modified area is an hydroxy group, thiol group, carboxy group, amino group, sulfo group, (thio)isocyanate group, allyl group, (meth)acrylic group, vinyl group, epoxy group, oxetane group or a thioepoxy group.

Functional laminate and functional lens comprising the functional laminate

A method of producing a plastic lens having a cured coating layer, comprising the steps of:

Method of producing a plastic lens having a coating layer

The present invention relates to a curable composition for an optical material, containing (A) 100 parts by mass of a radical polymerizable monomer, (B) 0.1 to 5 parts by mass of an ultraviolet absorber composed of a benzotriazole compound having a specific structure, which has a maximum absorption wavelength of 360 nm or more and less than 380 nm and an absolute value of the difference in solubility parameter (SP value) from the radical polymerizable monomer (A) of 5.5 (cal/cm)or less, (C) 1 to 5 parts by mass of an ultraviolet absorber which is at least one selected from a benzotriazole compound, a benzophenone compound and a triazine compound and has a maximum absorption wavelength of less than 360 nm, and (D) 0.05 to 0.5 parts by mass of a radical polymerization initiator. According to the present invention, it is possible to provide a curable composition for an optical material which has an ability to cut ultraviolet rays and blue light and can be suitably used as a coating material having good storage stability and weather resistance.

Curable composition for optical materials, and optical material

To provide an adhesive composition capable of firmly bonding polymer sheets together, comprising:

Adhesive composition, laminate and optical article comprising the laminate

The present invention is an optical material composition containing (A) 100 parts by mass of a polymerizable monomer, and (B) 0.001 to 0.3 parts by mass of a UV absorbent having a maximum absorption wavelength of 360 nm or more and less than 380 nm and having a specific structure, and an optical material formed of the composition. According to the present invention, there can be provided an optical material composition containing a UV absorbent and having good long-term storage stability, and an optical material formed of the composition, in particular, an optical material composition capable of forming a plastic lens having a high blue light cut rate.

Optical material composition and optical material

A functional lens comprising a functional laminate (A) having a functional layer (Ac) having photochromic properties and/or polarizability between a first optical sheet (Aa) and a second optical sheet (Ab) both made of a resin such as polyamide resin and a synthetic resin layer (B) made of a resin such as allyl resin or polythiourethane resin on the first optical sheet (Aa) and/or the second optical sheet (Ab) of the functional laminate (A) and having an adhesive strength between the first optical sheet (Aa) and/or the second optical sheet (Ab) and the synthetic resin layer (B) of not less than 50 N.

The present invention relates to a curable composition for an optical material, containing (A) 100 parts by mass of a radical polymerizable monomer, (B) 0.005 to 0.5 parts by mass of a tetraazaporphyrin compound having a maximum absorption wavelength in a range of 560 nm or more and 620 nm or less, and (C) 0.1 to 10 parts by mass of an ultraviolet absorber having a maximum absorption wavelength in a range of 330 nm or more and 350 nm or less. According to the present invention, it is possible to provide a curable composition for an optical material, capable of being suitably used as a coating material that can easily provide an optical material having good antiglare properties and excellent weather resistance.

A primer composition for optical articles includes (A) a urethane prepolymer which is a reaction product of an aromatic polyisocyanate compound and a polyol compound, and which has a reactive group at an end, the reactive group being selected from among an isocyanate group and a hydroxyl group, (B) a light absorbing compound which has a maximum absorption wavelength within the range of from 320 nm to 650 nm (inclusive) and (C) an organic solvent which has a solubility parameter of 8 (cal/cm)or more, while containing no active hydrogen.

Primer composition for optical articles, and laminate

The present invention relates to a photochromic compound including a polyvalent residue on which at least one group having a photochromic moiety is substituted, and at least one long-chain group not containing a photochromic moiety and having a molecular weight of 300 or more is further substituted; and a curable composition containing the same. In accordance with the present invention, it is possible to provide a photochromic compound which has high solubility in a polymerizable compound serving as a matrix while retaining high photochromic characteristics and is hardly affected by the matrix; and a curable composition containing the same.

Photochromic compound and curable composition containing said photochromic compound

Provided is a photochromic curable composition which forms a cured body that develops excellent photochromic properties. The photochromic curable composition (A) includes: a polyrotaxane monomer wherein, in a polyrotaxane compound having a composite molecular structure composed of an axial molecule and a plurality of cyclic molecules threaded onto the axial molecule, and side chains having OH groups introduced into the cyclic molecules, 1 mol % or more to less than 100 mol % of OH groups in the side chains are modified with a compound having a radical-polymerizable group, (B) a photochromic compound, and (C) a polymerizable monomer other than the (A) polyrotaxane monomer.

Photochromic curable composition, use thereof, and polyrotaxane monomers

A photochromic curable composition comprising a radically polymerizable monomer having at least one oxetanyl group in one molecule, a photochromic compound and radically polymerizable monomers other than the above polymerizable monomer, and a photochromic cured body obtained by polymerizing the photochromic curable composition.

Photochromic curable composition

The present invention provides an optical composition from which an optical article having reduced poor appearance such as cloudiness and optical strain during lens base material production can be obtained, and when a photochromic compound is added, a photochromic cured body having excellent photochromism and mechanical strength can also be formed, and a polyrotaxane used therefor. The polyrotaxane has a composite molecular structure formed of an axle molecule and a plurality of cyclic molecules clathrating the axle molecule, satisfying at least one of (X) and (Y). (X): A side chain having a secondary or tertiary hydroxyl group is introduced into at least part of the cyclic molecule of the polyrotaxane. (Y): A side chain having a group represented by -A (A is an organic group, and contains at least one hydroxyl group) is introduced into at least part of the cyclic molecule of the polyrotaxane, and a pKa of the hydroxyl group of the compound represented by H-A is 6 or more and less than 14.

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Shunan, Japan

Junji Momoda