Mitsubishi Chemical Corporation

Yuichi Yayama

Takayuki Yoshida

Sora Tomita

Yukie Nakashima

Kenji Tsuruhara

Masashi Yokogi

Hiroki Shibata

Kei Uchiyama

Rie Konishi

Kazuo Hirowatari

A bisphenol composition includes 95% or more by mass of a bisphenol and 200 mass ppm or more of a compound represented by the following general formula (II): In formula (II), Rand Rdenote a methyl group or a hydrogen atom; Ris a methyl group when Ris a hydrogen atom; Ris a hydrogen atom when Ris a methyl group; Rto Rindependently denote a hydrogen atom or an alkyl group having 1 to 20 carbon atoms; and R, R, and Rmay be bonded or cross-linked between two of the groups. A method for producing a polycarbonate resin using the bisphenol composition is also described.

Bisphenol composition and polycarbonate resin

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.

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Tokyo, Japan

Yuichi Yayama