Tokuyama Corporation

Katsuhiro Mori

Junji Momoda

Yasutomo Shimizu

Toshimitsu Hiraren

Hironobu Nagoh

Naoto Takahashi

Junji Takenaka

Tadashi Hara

Hiromasa Yamamoto

Noriyuki Fukada

Ikumi Kawaguchi

Shinobu Izumi

Yuichiro Kawabata

Kazuhiro Teranishi

Masayuki Miyazaki

Taichi Hanasaki

Shunichiro Nakatsukasa

Manami Oshio

Shuhei Yamamoto

Noriaki Tahara

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

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

Adhesive composition, laminate and optical article comprising the laminate

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 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.

Polyrotaxane, production method therefor, and optical composition containing said polyrotaxane

To provide a laminate comprising a pair of polycarbonate optical sheet or film which are laminated together through a polarizing film layer and an adhesive layer of a photochromic composition comprising (I) a polyurethane urea resin and (II) a photochromic compound and having excellent photochromic properties, adhesion, heat resistance, perspiration resistance and excellent adhesion to a lens substrate.

Laminate and optical article comprising the same

A process for producing a photochromic cured body by curing a photochromic composition comprising (A) a polyiso(thio)cyanate compound having at least two isocyanate groups and/or isothiocyanate groups in one molecule, a poly(thi)ol compound having at least two hydroxyl groups and/or thiol groups in one molecule, (C) a mono(thi)ol compound having one hydroxy group or thiol group in one molecule, and a photochromic compound.

Process for producing a photochromic cured body

A coating composition comprising inorganic oxide fine particles containing at least one element selected from the group consisting of Ti, Zr, Sn and Sb, a hydrolysable group-containing organic silicon compound, and (C1) a surfactant having an HLB value of 8 or less and (C2) a surfactant having an HLB value of more than 8, for forming a coat layer having little white turbidity, a good appearance and excellent scratch resistance, chemical resistance, hot water resistance and weather resistance on the surface of a plastic optical substrate.

Coating composition and optical article having a coat layer made of the coating composition

A photochromic composition comprising (A) a polyrotaxane having a composite molecular structure composed of an axial molecule and a plurality of cyclic molecules clathrating the axial molecule and (B) a photochromic compound.

Photochromic composition

A curable composition which provides a coating layer having high adhesion to a substrate and a hard coat layer and extremely excellent photochromic properties such as high color development intensity, high fading speed and excellent durability. This composition comprises (1) 100 parts by weight of radically polymerizable monomers including a silyl monomer such as &#x3b3;-methacryloyloxypropyl trimethoxysilane and/or an isocyanate monomer such as 2-isocyanatoethoxy methacrylate, (2) 0.01 to 20 parts by weight of an amine compound and (3) 0.01 to 20 parts by weight of a photochromic compound. A photochromic optical material having excellent adhesion between a photochromic coating layer and a resin substrate and obtained by using this composition as a coating material and a process for producing the photochromic optical material.

Curable composition, cured article obtained therefrom, and photochromic optical material and process for producing the same

A curable composition which comprises a carbonate-based polymerizable monomer represented by the following formula, other polymerizable monomers and a photochromic compound, can be used even under high-temperature and high-humidity conditions without any problems and provides a cured product having excellent photochromic properties. wherein A and A' are each a linear or branched alkylene group having 2 to 15 carbon atoms, 'a' is an average value of 1 to 20, when there are a plurality of A's, A's may be the same or different, Ris a hydrogen atom or methyl group, and Ris a (meth)acryloyloxy group or hydroxyl group.

Photochromic curable composition, cured product thereof and laminate including the cured product

A curable composition having excellent storage stability and capable of forming a cured product having excellent scratch resistance. The composition comprises a silsesquioxane monomer having a radically polymerizable group in the molecule and a content of a component having a molecular weight measured by gel permeation chromatography (GPC) of not less than 10,000 of less than 9 mass % and a bifunctional polymerizable monomer represented by the following formula (1). (wherein B and B' are each an linear or branched alkylene group having 2 to 15 carbon atoms, 'c' is an average value of 1 to 20, when a plurality of B's are existent, B's may be the same or different, and Rand Rare each a hydrogen atom or methyl group).

Curable composition and photochromic composition

To provide a photochromic composition which functions as an adhesive layer for bonding two optical sheets that are formed of a polycarbonate resin or the like, so that a laminate that is obtained by bonding two optical sheets with the composition being sandwiched therebetween has excellent adhesion, heat resistance and photochromic properties. In particular, to provide a photochromic composition which is capable of forming an adhesive layer that is not decreased in the adhesion between the optical sheets even in cases where the adhesive layer is in contact with hot water. Provided is a photochromic composition which contains a urethane polymer having a polymerizable group (component A) and a photochromic compound (component B).

Growing community of inventors

Shunan, Japan

Katsuhiro Mori