US 12,215,189 B2
Bisphenol composition and polycarbonate resin
Kei Uchiyama, Tokyo (JP); Masashi Yokogi, Tokyo (JP); Hiroki Shibata, Tokyo (JP); Sora Tomita, Tokyo (JP); Yuichi Yayama, Tokyo (JP); Kenji Tsuruhara, Tokyo (JP); Takayuki Yoshida, Tokyo (JP); Yukie Nakashima, Tokyo (JP); Rie Konishi, Tokyo (JP); and Kazuo Hirowatari, Tokyo (JP)
Assigned to MITSUBISHI CHEMICAL CORPORATION, Tokyo (JP)
Filed by MITSUBISHI CHEMICAL CORPORATION, Tokyo (JP)
Filed on Sep. 13, 2021, as Appl. No. 17/472,905.
Application 17/472,905 is a continuation of application No. PCT/JP2020/007746, filed on Feb. 26, 2020.
Claims priority of application No. 2019-047450 (JP), filed on Mar. 14, 2019; application No. 2019-047453 (JP), filed on Mar. 14, 2019; application No. 2019-047454 (JP), filed on Mar. 14, 2019; application No. 2019-234571 (JP), filed on Dec. 25, 2019; and application No. 2019-234572 (JP), filed on Dec. 25, 2019.
Prior Publication US 2021/0403641 A1, Dec. 30, 2021
Int. Cl. C08G 64/06 (2006.01); C07C 37/20 (2006.01); C07C 37/68 (2006.01); C07C 39/16 (2006.01); C08G 64/30 (2006.01); C08G 64/42 (2006.01)
CPC C08G 64/06 (2013.01) [C07C 37/20 (2013.01); C07C 37/685 (2013.01); C07C 39/16 (2013.01); C08G 64/307 (2013.01); C08G 64/42 (2013.01)] 15 Claims
 
1. A bisphenol composition, comprising:
95% or more by mass of a first bisphenol, and
150 mass ppm or more of a second bisphenol represented by formula (II),
wherein the bisphenol composition has a methanol dissolution color (Hazen color number) of 1 or less,

OG Complex Work Unit Chemistry
wherein:
X denotes a single bond, —CR11R12—, —O—, —CO—, —S—, —SO—, or —SO2—,
R11 and R12 independently denote a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and R11 and R12 may be bonded to each other to form a ring.