Mitsui Chemicals, Inc.

Kaoru Ohshimizu

Hiroki Ebata

Hironori Kuboi

Hideto Ogasawara

Nobuhiro Takizawa

Fumio Kageyama

Akinori Amano

Takashi Hama

Shintaro Mitsunaga

A method for producing an organic mercapto compound or an intermediate thereof according to the present invention has a reaction step of reacting an alcohol compound including a sulfur atom with a thioamide compound having a structure in which an organic group is bonded to at least one bonding hand of a thioamide group, under acidic conditions.

Method for producing organic mercapto compound or intermediate thereof, (poly)thiol component, polymerizable composition for optical material, molded product, optical material, and lens

The present invention addresses the problem of providing a polyester resin composition for reflective materials which gives a reflective material having a high reflectance. The polyester resin composition for reflective materials comprises: a polyester resin (A) comprising an alicyclic dicarboxylic acid ingredient unit (a1) and an aliphatic diol ingredient unit (b1); and a white pigment (B). The amount of the alicyclic dicarboxylic acid ingredient unit (a1) is 50 mol % or more of the amount of all the dicarboxylic acid ingredient units (a) in the polyester resin (A), and the amount of the aliphatic diol ingredient unit (b1) is 50 mol % or more of the amount of all the diol ingredient units (b) in the polyester resin (A). The alicyclic dicarboxylic acid ingredient unit (a1) comprises the cis and trans forms of cis-trans isomers, the proportion of the cis form determined by NMR being 20 mol % or higher.

Polyester resin composition for reflective material, and reflective material comprising same

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Omuta, Japan

Kaoru Ohshimizu