Mitsubishi Gas Chemical Company, Inc.

Yasuaki Yoshimura

Eiichi Honda

Yuichiro Satake

Keita Noguchi

Takashi Motoi

Noriyuki Kato

Mitsuharu Kitamura

Mitsuteru Kondo

Manabu Hirakawa

Takeshi Hirokane

Takuya Minezaki

Taku Watanabe

Katsushi Nishimori

Mitsutake Suematsu

Tatsuki Nyuui

Shoko Murata Suzuki

Provided is a polyester carbonate resin having a constituent unit (I) represented by the following general formula (1), a constituent unit (II) represented by the following general formula (2), and a constituent unit (III) represented by the following general formula (3):

Polyester carbonate resin, and molded body which is obtained by molding resin composition containing resin

A polyester resin composition containing: wherein Ris a hydrogen atom, CHor CH, Rand Rare each independently a hydrogen atom or CH, and n is 0 or 1.

Polyester resin composition

Provided is a thermoplastic resin having a constituent unit represented by the following general formula (I):

Thermoplastic resin, molded object, and monomer for thermoplastic resin

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 automobile component including a molded article containing a copolymerized polyester resin synthesized from a hydroxycarboxylic acid monomer, a diol monomer, and a dicarboxylic acid/ester monomer and having a unit (A) of formula (1), a diol unit (B), and a unit (C) derived from a dicarboxylic acid or an ester-forming derivative of the dicarboxylic acid. A content of the unit (A) in the total units of the copolymerized polyester resin is 60 to 90 mol %, The formula (1) is where Ris a hydrogen atom, CH, or CH, Rand Rare each independently a hydrogen atom or CH, and n is 0 or 1.

Molded article

Optical films comprising a polyester resin comprising a structural unit (A) of the following formula (1) wherein the content of the structural unit (A) based on the total structural units of the polyester resin is 76 mol % or greater:  wherein Ris a hydrogen atom, CH, or CH; Rand Ris each independently a hydrogen atom or CH; and n is 1, for example, Decahydro-1,4:5,8-dimethanonaphthalene-2-methoxycarbonyl-6(7)-methanol. Retardation films and circularly or elliptically polarizing plates comprising the optical films are also provided.

Optical film, retardation film, and polarizing plate

An object is to provide an optical polyester film and a transparent conductive film that are superior in transparency, heat resistance, optical properties, and adhesion. The optical polyester film includes: a base material containing a polyester resin containing a unit (A) of the following formula (1); and at least one functional layer disposed on at least one surface of the base material, wherein the at least one functional layer is selected from the group consisting of a hard coat layer, a transparent conductive layer, an anti-reflection layer, a gas barrier layer, and an adhesive layer. 

Optical polyester film and transparent conductive film

An object is to provide an optical lens having low water-absorbing capacity and superior in heat resistance, transparency, and optical characteristics (refractive index, Abbe's number, and photoelastic coefficient). The optical lens includes a polyester resin containing a unit (A) of the following formula (1). 

Optical lens

A copolymerized polyester resin containing a unit (A) represented by the following formula (1), a diol unit (B), and a unit (C) derived from a dicarboxylic acid or an ester-forming derivative of the dicarboxylic acid, 

Copolymerized polyester resin

A polyester resin having a diol constitutional unit and a dicarboxylic acid constitutional unit, wherein 20 to 100 mol % of the diol constitutional unit is a constitutional unit derived from a diol having a dinorbornane ring; a glass transition temperature of the polyester resin is 90&#xb0; C. or higher; an amount of heat of a crystallization exothermic peak in temperature drop of the polyester resin is 5 J/g or less; and a yellow index (YI) value as measured by a reflection method according to JIS K 7103 is 10 or less.

Polyester resin

A polyester resin according to the present invention comprises a constitutional unit represented by general formula (1): wherein Ris a hydrogen atom, CH, or CH; and Rand Rare each independently a hydrogen atom or CH.

Polyester resin and production method therefor

The bifunctional compound according to the present invention is represented by the following formula (1): wherein Ris a hydrogen atom, CH, or CH; Rand Rare each independently a hydrogen atom or CH; and X is a hydrogen atom or a hydrocarbon group having no more than 4 carbon atoms and optionally containing a hydroxyl group.

Bifunctional compound having norbornane skeleton and production method therefor

The polyester resin according to the present invention is a polyester resin containing a diol unit and a dicarboxylic acid unit, wherein 50 to 95% by mol of the diol unit is a unit derived from pentacyclopentadecane dimethanol represented by a predetermined formula (I) and/or a unit derived from pentacyclopentadecane dimethanol represented by a predetermined formula (II), 50 to 100% by mol of the dicarboxylic acid unit is a unit derived from an aromatic dicarboxylic acid, and both of predetermined conditions (1) and (2) are satisfied.

Growing community of inventors

Kanagawa, Japan

Yasuaki Yoshimura