发明公开
KR1020050087544A 디메틸 테레프탈레이트 제조공정의 부산물로부터메틸-4-포밀벤조에이트와 디메틸 테레프탈레이트의분리회수방법
失效 - Ended(transfer of patent right)
基本信息:
- 专利标题： 디메틸 테레프탈레이트 제조공정의 부산물로부터메틸-4-포밀벤조에이트와 디메틸 테레프탈레이트의분리회수방법
- 专利标题（英）：Recovery of methyl-4-formylbenzoate and dimethyl terephthalate from by-products in method for processing dimethyl terephthalate
- 专利标题（中）：甲基-4-甲基苯甲酸甲酯的恢复和二甲基三苯甲酸二甲酯在副产物中的处理二甲基三苯甲酸
- 申请号：KR1020040013412 申请日：2004-02-27
- 公开(公告)号：KR1020050087544A 公开(公告)日：2005-08-31
- 发明人： 김우선 , 유영갑 , 박무덕
- 申请人： 에스케이이노베이션 주식회사
- 申请人地址： 서울특별시 종로구 종로 ** (서린동)
- 专利权人： 에스케이이노베이션 주식회사
- 当前专利权人： 에스케이이노베이션 주식회사
- 当前专利权人地址： 서울특별시 종로구 종로 ** (서린동)
- 代理人： 청운특허법인
- 主分类号： C07C67/48
- IPC分类号： C07C67/48
The present invention obtained by the oxidation reaction of from a by-product of dimethyl terephthalate production process-methyl-4-formyl benzoate and dimethyl relates to a separation method for recovering terephthalate, more specifically, the p- xylene (p-xylene) terephthalic acid relates to a methanol and the esterification of dimethyl terephthalate method from a mixture of by-products generated in the production process for recovering and separating the respective pure methyl 4-formyl benzoate and dimethyl terephthalate production reacted. According to the invention, the methyl-4-formyl benzoate, dimethyl terephthalate, methyl benzoate -p- Tolu, methylbenzoate and methyl containing the impurities from the by-product of dimethyl terephthalate comprises a manufacturing process such as Eight-4-formyl-benzo purely separated by reacting a benzoate salt, and can make it purely separating dimethyl terephthalate from the mixture to remove the methyl 4-formyl benzoate.
公开/授权文献:
- KR100789557B1 디메틸 테레프탈레이트 제조공정의 부산물로부터메틸-4-포밀벤조에이트와 디메틸 테레프탈레이트의분리회수방법 公开/授权日：2007-12-28