Mitsui Chemicals, Inc.

Mitsui Toatsu Chemicals, Incorporated

Mamoru Tanaka

Seiichi Kobayashi

Shigetoshi Kuma

Yoshinobu Kanemura

Nobuo Kawato

Koju Okazaki

Shinsuke Ito

Masayuki Furuya

Akinori Ryu

Takeshi Nishimura

Kouji Suesugi

Hiroyuki Morijiri

Masahiko Kusumoto

Masanori Iwazumi

Kunio Okumura

Shiro Honma

Hidetoshi Hayashi

Chitoshi Shimakawa

Osamu Kohgo

Tatsuya Ogawa

Toshiya Hashimoto

Teruyuki Nagata

Munehito Funaya

Katsuyoshi Sasagawa

Naoyuki Kakinuma

Masaru Kawaguchi

Nobuya Kawauchi

Junichi Mohri

Yoshihiro Irizato

Shinichi Umeda

Michiharu Sakata

Yoko Tajiri

Koji Suesugi

Kouju Okazaki

Kouichi Tokunaga

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 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

A polymerizable composition for an optical material includes: (A) one or more isocyanates having two or more isocyanato groups that contains an aromatic isocyanate; (B) one or more alcohols having two or more hydroxyl groups; and (C) an acid phosphate represented by the following formula (1), in which a ratio of the molar number of a secondary hydroxyl group to the total molar number of primary and secondary hydroxyl groups contained in the alcohol (B) is 50% or higher. 

Polymerizable composition for optical material

A process for producing a polyurethane resin of the present invention includes a step (i) of obtaining a prepolymer by adding an alcohol (B) to isocyanate (A) such that a ratio of hydroxyl groups to isocyanato groups of the isocyanate (A) falls into a range of 10 mol % to 20 mol % and reacting the isocyanate (A) with the alcohol (B) in the presence of an acidic phosphoric acid ester (C) and a hindered amine-based compound (D), a step (ii) of obtaining a polymerizable composition in a manner in which the alcohol (B) is further added to and mixed with the prepolymer at a temperature of equal to or less than 30&#xb0; C., and a step (iii) of polymerizing the prepolymer and the alcohol (B) contained in the polymerizable composition. The isocyanate (A) contains an aromatic isocyanate and the alcohol (B) has two or more hydroxyl groups and is further defined.

Process for producing polyurethane resin

A polymerizable composition for polythiourethane optical materials comprising a compound represented by the general formula (1),M(L)n&#x2003;&#x2003;(1)

Polymerizable composition for polythiourethane optical material

A process for producing an aldehyde compound of the invention comprising: reacting a compound represented by the following formula (a1) or (a2) with a hydrogen and a carbon monoxide in a presence of a compound containing a metal belonging to Groups 8 to 10 and a phosphorous compound so as to satisfy the following conditions (1) and (2) to synthesize an aldehyde compound; 

Process for producing aldehyde compounds

The polymerization catalyst for a polythiourethane-based optical material of the present invention includes a sulfonate represented by the following general formula (1). Furthermore, in the formula, R, R, Rand Reach independently represent an alkyl group having 1 to 18 carbon atoms, R, R, Rand Rmay be bonded to each other to form a ring. Rrepresents a hydrogen atom or an alkyl group having 1 to 18 carbon atoms, and X represents a nitrogen atom or a phosphorus atom. 

Polymerization catalyst for polythiourethane-based optical material, polymerizable composition containing the catalyst, optical material obtained from the composition, and method for preparing the optical material

The process for producing an internal mold release agent for an optical material of the present invention includes a step of heating, to a range of 80&#xb0; C. to 140&#xb0; C., a composition including (a) a phosphoric ester compound, and (b) an alcohol compound containing an aliphatic alcohol having 1 to 10 carbon atoms and/or aromatic alcohol, when the total amount of (a) and (b) is 100% by weight, the alcohol compound (b) is included in an amount equal to or more than 2.5% by weight.

Process for producing internal mold release agent for optical material, internal mold release agent for optical material, and polymerizable composition including the same

A resin composition excellent in tintability and resin strength, a resin obtained by curing such a resin composition, and an optical component is provided. A polymerizable composition containing an isocyanate compound suitably used for transparent resin materials, at least one polythiol compound which may have one or more (poly) sulfide bonds in a molecule, and at least one polyhydroxy compound having two or more hydroxy groups in a molecule and/or at least one (poly)hydroxy(poly)mercapto compound having one or more hydroxy groups and one or more thiol groups is used.

Polythiourethane polymerizable composition and method for producing optical resin by using same

The polymerizable composition for a polythiourethane optical material of the present invention includes (A) a polymerization catalyst for a polythiourethane optical material, (B) at least one compound selected from an isocyanate compound and an isothiocyanate compound, and (C) a compound containing one or more mercapto groups, wherein said polymerization catalyst for a polythiourethane optical material (A) includes (a1) a zinc compound, (a2) a compound represented by the following general formula (1), and (a3) a sulfonic acid represented by the following general formula (2): 

Polymerizable composition for polythiourethane optical material, polythiourethane optical material obtained from the polymerizable composition, and polymerization catalyst for polythiourethane optical material

Provided are a polymerizable composition for giving a resin which has a high refractive index and low dispersion, and is especially excellent in impact resistance and tintability; and a resin and an optical component each obtained by curing the composition. There used a polymerizable composition comprising (A) a compound represented by Formula (1) and/or by Formula (2), at least one compound as the following component (B), and at least one compound as the following component (C): 

Polythiourethane-based polymerizable composition and optical resin obtained from the same

A resin composition excellent in tintability and resin strength, a resin obtained by curing such a resin composition, and an optical component is provided. A polymerizable composition containing an isocyanate compound suitably used for transparent resin materials, at least one polythiol compound which may have one or more (poly)sulfide bonds in a molecule, and at least one polyhydroxy compound having two or more hydroxy groups in a molecule and/or at least one (poly)hydroxy(poly)mercapto compound having one or more hydroxy groups and one or more thiol groups is used.

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Fukuoka, Japan

Mamoru Tanaka