- 专利标题： POLYCARBONATE RESIN DECOMPOSITION METHOD, BISPHENOL PRODUCTION METHOD, DIALKYL CARBONATE PRODUCTION METHOD, ALKYL ARYL CARBONATE PRODUCTION METHOD, DIARYL CARBONATE PRODUCTION METHOD, RECYCLED POLYCARBONATE RESIN PRODUCTION METHOD, EPOXY RESIN PRODUCTION METHOD, AND EPOXY RESIN CURED PRODUCT PRODUCTION METHOD
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申请号： EP21897821.1申请日： 2021-11-17
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公开(公告)号： EP4253356A1公开(公告)日： 2023-10-04
- 发明人: UCHIYAMA, Kei
- 申请人： Mitsubishi Chemical Corporation
- 申请人地址： JP Chiyoda-ku Tokyo 100-8251 1-1, Marunouchi 1-chome,
- 代理机构： Vossius & Partner Patentanwälte Rechtsanwälte mbB
- 优先权： JP2021118115 20210716
- 国际公布： WO2022113847 20220602
- 主分类号： C07C37/52
- IPC分类号： C07C37/52 ; C07C37/68 ; C07C39/16 ; C07C68/08 ; C07C69/96 ; C08G64/04 ; C08G64/06 ; C08G64/20 ; C08J11/16 ; C08J11/24 ; C08J11/28
摘要：
A method for degrading a polycarbonate resin that can degrade a polycarbonate resin with high reactivity even under a condition that is mild and has a small environmental load is provided. In addition, a method for producing an alkyl aryl carbonate that can degrade a polycarbonate resin even under a condition that is mild and has a small environmental load and can efficiently obtain a dialkyl aryl carbonate is provided. A method for degrading a polycarbonate resin, comprising, in a slurry-like reaction liquid comprising a polycarbonate resin, an aromatic monoalcohol, an aliphatic monoalcohol, and a catalyst, degrading the polycarbonate resin. In addition, a method for producing an alkyl aryl carbonate, comprising: a polycarbonate resin degradation step of degrading a polycarbonate resin in the presence of an aromatic monoalcohol, an aliphatic monoalcohol, and a catalyst; and an alkyl aryl carbonate recovery step of recovering an alkyl aryl carbonate generated by the degradation of the polycarbonate.
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