Mitsui Chemicals, Inc.

Shinsuke Ito

Kouji Suesugi

Mamoru Tanaka

Satoshi Yamasaki

Masayuki Furuya

Naoyuki Kakinuma

Takeshi Nishimura

Toshihiko Nakagawa

Hidetaka Tsukada

Kenichi Goto

Shinji Kiyono

Daisuke Hasegawa

Hirokazu Morita

Goro Kuwamura

Tetsuya Hamada

Daisuke Nishiguchi

Yusuke Matsui

Kazuhiro Kosumi

Shotaro Nakano

Tatsuya Ogawa

Shigetoshi Kuma

Nobuo Kawato

Toshiya Hashimoto

Kouju Okazaki

Koji Suesugi

A polymerizable composition for an optical material of the present invention includes (A) a compound of which pKa value is 1 to 9, (B) a di- or higher functional iso(thio)cyanate compound, and (C) a di- or higher functional active hydrogen compound.

Polymerizable composition for optical material, optical material, and producing method thereof

A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing an aromatic ring, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from 0.010 parts by mass to 0.50 parts by mass, and the viscosity measured by a B-type viscometer at 25&#xb0; C. and 60 rpm is from 10 mPa&#xb7;s to 1,000 mPa&#xb7;s.

Polymerizable composition for optical material, polymerizable prepolymer composition for optical material, cured product, and method of producing optical material

A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing no aromatic rings, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from more than 0.05 parts by mass to 2.0 parts by mass, and a viscosity measured by a B-type viscometer at 25&#xb0; C. and 60 rpm is from 10 mPa&#xb7;s to 1,000 mPa&#xb7;s.

The polymerizable composition for an optical material of the present invention includes a compound (A) represented by General Formula (a) and including two or more allyloxycarbonyl groups, at least one kind of radical polymerization initiator (B) selected from the group consisting of a peroxyketal-based radical polymerization initiator, a peroxymonocarbonate-based radical polymerization initiator, and a peroxyester-based radical polymerization initiator, and a modifier (C) selected from a polyether modified siloxane compound represented by General Formula (c1) or a polyol compound represented by General Formula (c2). 

Polymerizable composition for optical material and optical material and plastic lens obtained from same composition

A polymerizable composition for an optical material includes a compound represented by General Formula (1) and a polymerization reactive compound. 

Polymerizable composition for optical material, optical material, and application thereof

A polymerizable composition for an optical material according to the present invention includes one or two or more compounds selected from the group consisting of component (A): an ester compound having a specific structure and component (B): an ether compound having a specific structure, and a polymerizable compound.

Polymerizable composition for optical material and optical material and plastic lens obtainable from same composition

A process for producing a plastic lens includes a step of stirring and mixing a solution including a polymerization reactive compound in a preparation tank; a step of transferring the polymerizable composition obtained in the step from the preparation tank to a lens casting mold; a step of curing the polymerizable composition; and a step of obtaining a plastic lens molded product by separating the obtained resin from the lens casting mold. The step of transferring the polymerizable composition includes a step of re-mixing the polymerizable composition discharged from the preparation tank and injecting the polymerizable composition into the lens casting mold.

Process for producing plastic lens and apparatus for producing plastic lens

There is provided a polymerizable composition for an optical material including a polyether-modified compound having a polyether group represented by General Formula (4) below, and a polymerization reactive compound. (In General Formula (4), Rrepresents a linear or branched alkylene group having 1 to 20 carbon atoms, Rrepresents a hydrogen atom, a linear or branched alkyl group having 1 to 20 carbon atoms, a linear or branched alkenyl group having 2 to 20 carbon atoms, or a linear or branched alkynyl group having 2 to 20 carbon atoms, a plurality of present R's may be the same or different, and k is an integer equal to or more than 1.)

The polymerizable composition for an optical material of the present invention contains (A) at least one kind of isocyanate having two or more isocyanato groups, which contains aromatic isocyanate, (B) at least one kind of alcohol having two or more hydroxyl groups, (C) an acidic phosphoric acid ester represented by the following Formula (1), and (D) a benzotriazole-based compound, in which a ratio of secondary hydroxyl groups to the total molar number of primary and secondary hydroxyl groups contained in the alcohol (B) is equal to or greater than 50%, and the benzotriazole-based compound (D) is contained in an amount of 1 part by weight to 11 parts by weight with respect to a total of 100 parts by weight of the isocyanate (A) and the alcohol (B).

Polymerizable composition for optical material, optical material obtained from polymerizable composition, and manufacturing method of optical material

Disclosed is a polymerizable composition for an optical material containing polyisocyanate (a) including aliphatic polyisocyanate (a1) and a modified aliphatic polyisocyanate (a2); and polythiol (b) having a di- or higher functional thiol group, in which the modified aliphatic polyisocyanate (a2) is contained in the polyisocyanate (a) in the amount of less than or equal to 60 weight %.

Polymerizable composition for optical material and optical material

The eyewear material is an eyewear material containing thermoplastic polyurethane. The eyewear material has a tan &#x3b4; peak at both less than 0&#xb0; C. and 0&#xb0; C. or more and 70&#xb0; C. or less observed in dynamic viscoelasticity measurement in tensile mode under the measurement conditions of a temperature increase speed of 5&#xb0; C./min and a measurement frequency of 10 Hz.

Eyewear material, eyewear frame, and eyewear

1,4-bis(isocyanatomethyl)cyclohexane contains 70 mol % or more and 95 mol % or less of a trans isomer relative to a total amount of a cis isomer and the trans isomer, and 0.1 ppm or more and 300 ppm or less of the compound represented by formula (1) below: 

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Auburn Hills, MI, United States of America

Shinsuke Ito