Tokuyama Corporation

Masayuki Miyazaki

Junji Takenaka

Junji Momoda

Yasutomo Shimizu

Takayoshi Kawasaki

Takao Noguchi

Katsuhiro Mori

Takashi Tamukai

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

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

The invention is a photochromic compound having an indenonaphthopyran skeleton, and the indenonaphthopyran skeleton has an alkenyl group having 10 to 30 carbon atoms, and an oligomer chain group A having 3 or more recurring units selected from a polyalkylene oxide oligomer chain group, a polyester oligomer chain group, a polysiloxane chain group and a polyester polyether oligomer chain group. The invention can provide a photochromic compound capable of expressing excellent photochromic characteristics in various cured products and capable of preventing cured products from becoming cloudy.

Photochromic compound, curable composition containing said photochromic compound, and optical article

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

A chromene compound having at least one indenonaphthopyran moiety which has a group forming a spiro ring together with the 13-position carbon atom and further an oligomer chain group selected from a polyalkylene oxide oligomer chain group having at least three recurring units and a polyester oligomer chain group having at least three recurring units, represented by the following formula and having reduced matrix dependence: wherein Rand Rare each a group which may have an oligomer chain group, the ring Z bonded to the 13-position carbon atom of the chromene compound is a Spiro ring group, and Rand Rare each an aryl group or heteroaryl group which may have an oligomer chain group. Preferably, the chromene compound has at least one oligomer chain group in the molecule.

Chromene compound, curable composition comprising the compound, and optical article including a cured body of the curable composition

A photochromic polyrotaxane compound which comprises an axial molecule and a plurality of cyclic molecules clathrating the axial molecule, wherein at least one side chain containing a photochromic moiety is bonded to at least one of the cyclic molecules, and a curable composition comprising the photochromic polyrotaxane compound and a polymerizable compound.

Photochromic polyrotaxane compound and curable composition comprising the photochromic polyrotaxane compound

To provide a photocurable resin composition comprising an N-vinyl amide compound, a polyfunctional (meth)acrylate monomer and a photopolymerization initiator and having excellent adhesion to an optical substrate and free from an appearance defect such as a crack or shrinkage and a laminate having a coat layer obtained by curing the photocurable resin composition.

Growing community of inventors

Shunan, Japan

Masayuki Miyazaki