METHOD FOR PRODUCING BISPHENOL COMPOUND, AND METHOD FOR PRODUCING POLYCARBONATE RESIN

• Main Authors: TAKAMI YOSHIE, NAKAMURA TAKESHI, KADOTA TOSHIKI, MAEDA TOMOKO
• Format: Patent
• Language: English; Japanese
• Published: 27.12.2018
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide a method for easily, efficiently and highly selectively producing a bisphenol compound exhibiting stable polymerization activity as a raw material for polycarbonate resin with an industrial scale.SOLUTION: A method for producing a bisphenol compound represented by formula (1) includes reacting aldehydes and a monophenol compound in the presence of a sulfonic acid compound represented by formula (2). In formula (1), Ris a monovalent aliphatic hydrocarbon group having 6 to 24 carbon atoms; Rand Rare each independently a monovalent hydrocarbon group having 1 to 15 carbon atoms; a and b are integers of 0 to 4; and when either a or b is 2 or more, either Ror Rthat is 2 or more on the same benzene ring may be bonded to each other to form a ring. In formula (2), Ris an n-th valent hydrocarbon group having 1 to 20 groups: and n is an integer of 1 to 2.SELECTED DRAWING: None 【課題】ポリカーボネート樹脂用原料等として安定した重合活性を示すビスフェノール化合物を、工業的規模で容易に、効率的かつ高選択的に製造する方法の提供。【解決手段】アルデヒド類とモノフェノール化合物とを、式（２）で表されるスルホン酸化合物の存在下に反応させて式（１）で表されるビスフェノール化合物を製造する方法。［Ｒ１はＣ６〜２４の一価脂肪族炭化水素基；Ｒ２及びＲ３は夫々独立にＣ１〜１５の一価炭化水素基；ａ及びｂは０〜４の整数；ａ又はｂが２以上の場合、同一のベンゼン環上にある２以上のＲ２又はＲ３は互いに結合して環を形成していても良い］［Ｒ４はＣ１〜２０のｎ価炭化水素基；ｎは１〜２の整数］【選択図】なし