Mitsubishi Chemical Corporation

Kazuo Hirowatari

Takayuki Yoshida

Kei Uchiyama

Rie Konishi

Kenji Tsuruhara

Masashi Yokogi

Hiroki Shibata

Sora Tomita

Yuichi Yayama

Yukie Nakashima

Takaharu Oono

A bisphenol composition including 95% or more by mass of a bisphenol, wherein a bisphenol represented by the following general formula (II) in the bisphenol composition constitutes 150 mass ppm or more, and the bisphenol composition has a methanol dissolution color (Hazen color number) of 2 or less, In formula (II), X denotes a single bond, —CRR—, —O—, —CO—, —S—, —SO—, or —SO—, Rand Rindependently denote a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and Rand Rmay be bonded to each other to form a ring. A method for producing a polycarbonate resin using the bisphenol composition is also described.

Bisphenol composition and polycarbonate resin

A bisphenol composition including a specific amount of aromatic alcohol sulfonate, and a simple method of producing it are provided. Also provided is a method of producing a polycarbonate resin in which, by using the bisphenol composition including a specific amount of aromatic alcohol sulfonate, melt polymerization reaction can be efficiently allowed to proceed to produce a polycarbonate resin having an excellent color tone. A bisphenol composition including an aromatic alcohol sulfonate at not less than 0.1 ppb by mass with respect to a bisphenol. A method of producing a bisphenol composition, including reacting a ketone or an aldehyde with an aromatic alcohol in the presence of sulfuric acid to produce a bisphenol composition. A method of producing a polycarbonate resin, including producing a polycarbonate resin using the bisphenol composition. A polycarbonate resin including a specific amount of aromatic alcohol sulfonate.

Bisphenol composition containing aromatic alcohol sulfonate and method for producing same, polycarbonate resin and method for producing same, and bisphenol production method

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Chiyoda-ku, Japan

Kazuo Hirowatari