Mitsubishi Gas Chemical Company, Inc.

Teac Corporation

Mgc Filsheet Co., Ltd.

Fuji Kasei Co., Ltd.

Reuter Chemische Apparatebau E.k.

Noriyuki Kato

Kentaro Ishihara

Munenori Shiratake

Shinya Ikeda

Mitsuteru Kondo

Koji Hirose

Shoko Suzuki

Kensuke Oshima

Shu Yoshida

Manabu Hirakawa

Masahiro Kanda

Kazuaki Kaneko

Toshiaki Yamada

Jun Hagiwara

Mitsuharu Kitamura

Yoshinori Isahaya

Karl Reuter

Takayasu Fujimori

Takashi Motoi

Florian Stolz

Takashi Ishii

Yoshio Nishimura

Hiroshi Horikoshi

Yasuhiro Suzuki

Noboru Ohtani

Eiichi Honda

Masahiko Ishikawa

Masamichi Mizukami

Yasuaki Yoshimura

Katsushige Hayashi

Yoshiyuki Masuda

Yuichiro Satake

Shuya Nagayama

Hirohito Ishizuka

Hiroki Furuhashi

Keiichi Kameyama

Katsushi Nishimori

Tatsunobu Ogata

Atsushi Motegi

Mitsutake Suematsu

Mark Kantor

Vasyl Andrushko

Shigeru Fukinuki

Minoru Minase

Yoshitaka Masuda

Eiji Koshiishi

Yoshiya Kimura

Ryozo Kawai

Yo Kamei

Haruaki Eto

Takatoshi Matsumura

Kunitoshi Mimura

Kentarou Ishihara

Kouji Hirose

Syoichi Nito

Masaaki Nio

Shingo Kanasaki

Masaya Sakata

Yuta Nakanishi

Hiromi Kagaya

Sunao Nojima

Kosuke Namiki

Shoko Murata

Tatsuki Nyuui

Yuki Kumagai

Kazuya Sekihara

Kazutaka Takamatsu

Shoko Murata Suzuki

Oshima Kensuke

A thermoplastic resin composition that cuts visible light and has infrared light transmittance. A thermoplastic resin composition including a thermoplastic resin and a coloring material, wherein the refractive index at a wavelength of 894 nm is 1.60 or greater, and when the thickness of the thermoplastic resin composition is 1 mm, the maximum value of the transmittance of wavelengths of 380 nm-630 nm is greater than 0% and less than or equal to 1.00%, and the average transmittance of wavelengths of 840 nm-940 nm is greater than or equal to 80%.

Thermoplastic resin composition and optical member using same

Provided is an optical resin composition for lenses that contains a resin having a structural unit represented by formula (1), and a binaphthalene compound and/or a binaphthalene compound oligomer having a structural unit represented by formula (2). A, p, K, K, Z, and q in formula (1) are as described in the present specification. R-R, a, and b in formula (2) are as described in the present specification.

Resin composition, molded body, optical lens, and optical lens unit

Provided is an optical lens formed by integrally molding a lens part that is an optically effective portion and has a light incidence/emission surface, and a lens edge part that is an optically ineffective portion and has a surface thereof except the light incidence/emission surface. The lens edge part includes a non-transparent region in part or all thereof, the lens part and the lens edge part include a thermoplastic resin, and the non-transparent region in the lens edge part contains a total of 0.1-5 mass % of one or more of a black dye and a black pigment.

Optical lens and method for manufacturing same

A polycarbonate resin having a high refractive index, a low Abbe number and a high moisture and heat resistance is provided. In an embodiment, a polycarbonate resin including a structural unit represented by general formula (1) below is provided.

Polycarbonate resin, method for producing the same, and optical lens

The present invention relates to triarylmethane compounds of the formula (I), which suitable as monomers for preparing thermoplastic resins having beneficial optical properties and which can be used for producing optical devices. R, Rare e.g. hydrogen; Y is an alkylene group having 2, 3 or 4 carbon atoms, Ar is selected from mono- or polycyclic aryl and mono- or polycyclic hetaryl; X, X, X, Xare CH, C&#x2014;Ror N, provided that in each ring at most two of X, X, X, Xare N; Ris e.g. halogen, CN or CH&#x2550;CH. The invention also relates to thermoplastic resins comprising a polymerized unit of the compound of formula (I).

Triarylmethane compounds

A polyester carbonate resin is provided and includes a constituent unit represented by the following general formula (1), a constituent unit represented by the following general formula (2), and a constituent unit represented by the following general formula (3): wherein R represents hydrogen or an alkyl group containing 1 to 4 carbon atoms, wherein Q represents the following: wherein n and m each independently represent an integer of 0 to 5, and

Polyester carbonate resin and optical lens

An optical resin material for chromatic aberration correction is provided including at least 5% by mass of a compound (component A) represented by formula (1) or formula (3), in which Rto Reach independently represent a structure represented by formula (2), in which the broken line represents a binding site; n1 represents an integer of 0 to 3; n2 represents an integer of 0 or 1; n3 represents an integer of 0 to 4; Rrepresents hydrogen, an acryl group, a methacryl group, a cyanoacryl group, a cyclic ether group, an allyl group, a propargyl group, a hydroxy group, an isocyanate group, chlorine, or an optionally branched alkyl group having 1 to 8 carbon atoms; and X represents an alkylene glycol chain having 2 to 7 carbon atoms or a lactone-modified ketone chain, in which Rto Reach independently represent a structure represented by formula (2).

Optical resin material for chromatic aberration correction

The present application provides a polycarbonate resin composition which has a high refractive index and a low Abbe number, and high thermal stability. The polycarbonate resin composition according to one embodiment of the present application includes a polycarbonate resin and an antioxidant, wherein the polycarbonate resin contains a constituent unit represented by general formula (1) (in general formula (1), X represents an alkylene group having 1-4 carbon atoms, and a and b each independently represent an integer of 1-10), and the antioxidant content is 1-3000 ppm. 

Polycarbonate resin composition, production method therefor, and optical lens

A polycarbonate resin having a high refractive index, a low Abbe number and a high moisture and heat resistance is provided. In an embodiment, a polycarbonate resin including a structural unit represented by general formula (1) below is provided. 

A polyester carbonate resin is provided, which includes a structural unit derived from a compound represented by general formula (1), a structural unit derived from a compound represented by general formula (2), a structural unit derived from a dicarboxylic acid or a derivative thereof, and a structural unit derived from a carbonic acid diester. The polyester carbonate can be used, e.g., in optical systems. 

Resin produced by polycondensation, and resin composition

Provided are a polycarbonate having an appropriate refractive index and an appropriate Abbe number, and comprehensively excelling in heat resistance, total light transmittance, and hue, and a molded article thereof. The polycarbonate includes a constituent unit represented by Formula [I] and a constituent unit having a hydrocarbon group containing a cyclic structure. In Formula [I], Rand Reach independently denote a hydrocarbon group, and each Rindependently denotes a hydrogen atom, a heteroatom-containing group, a halogen atom-containing group, a linear alkyl group having from 1 to 6 carbon atoms, a branched alkyl group having from 3 to 6 carbon atoms, or a group including an aryl group and having from 6 to 12 carbon atoms. 

Polycarbonate and molded article

A polycarbonate resin having a high refractive index, low Abbe number, and high moist heat resistance that includes structural units represented by general formula (1): 

Polycarbonate resin, method for producing same, and optical lens

The present invention relates to binaphthyl compounds of the formula (I), which are suitable as monomers for preparing polycarbonate resins having beneficial optical properties and which can be used for producing optical lenses: Formula (I) where X is C-C-alkandiyl or C-C-alkandiyl-C(O)&#x2014;, where C(O) is bound to the oxygen atom of the hydroxyl group and where C-C-alkandiyl or C-C-alkandiyl, respectively, are unsubstituted or carry a phenyl ring; R and R' are identical or different and selected from mono or polycyclic aryl having from 6 to 36 carbon atoms and mono- or polycyclic hetaryl having a total of 5 to 36 atoms, which are ring members, where 1, 2, 3 or 4 of these atoms are selected from nitrogen, sulfur and oxygen, while the remainder of these atoms are carbon atoms, where mono- or polycyclic aryl and mono- or polycyclic hetaryl are unsubstituted or carry 1 or 2 radicals R, which are selected from the group consisting of CN, CH, OCH, O-phenyl, O-naphthyl, S-phenyl, S-naphthyl, CI or F; and, if X is C-C-alkandiyl-C(O)&#x2014;, the esters thereof, in particular the C-C-alkylesters thereof. 

Binaphthyl compounds

The present invention provides a resin composition comprising a thermoplastic resin comprising a constituting unit (A) derived from a compound represented by the following general formula (1), wherein 

Thermoplastic resin composition and molded article thereof

The present invention provides a method for producing a thermoplastic resin by reacting reactants comprising a dihydroxy compound. In this production method, the dihydroxy compound comprises a dihydroxy compound represented by the following formula (1), and at least one of a compound represented by the following formula (A), a compound represented by the following formula (B), and a compound represented by the following formula (C), wherein the total weight of the compound represented by the formula (A), the compound represented by the formula (B), and the compound represented by the formula (C) is 1,500 ppm or more, based on the weight (100 parts by weight) of the dihydroxy compound represented by the formula (1). 

Method of producing thermoplastic resin

Growing community of inventors

Tokyo, Japan

Noriyuki Kato