发明名称 |
СПОСОБ ОЧИСТКИ БИСФЕНОЛА-А |
摘要 |
Bisphenol-A is purified in a process which comprises the following steps: a) cooling a liquid mixture comprising bisphenol-A and water in a bisphenol-A crystallizer to form bisphenol-A crystals in a liquid phase; b) separating the bisphenol-A crystals from the liquid phase; c) dividing at least a portion of the liquid phase into a bisphenol-rich organic phase and a water-rich phase; d) feeding phenol and at least a portion of the bisphenol-rich organic phase into a adduct crystallizer to form a crystalline adduct of phenol and bisphenol-A in a mother liquor, and e) separating the crystalline adduct from the mother liquor. Bisphenol-A of high purity at a high yield is obtained. |
申请公布号 |
RU2005120016(A) |
申请公布日期 |
2006.01.20 |
申请号 |
RU20050120016 |
申请日期 |
2003.11.12 |
申请人 |
ДАУ ГЛОБАЛ ТЕКНОЛОДЖИЗ ИНК. (US) |
发明人 |
ЯНГ Томас К. (US);ФЕОРД Дэймиан М. (FR);ФРЕЙ Йоханн-Вильхельм (DE) |
分类号 |
C07C37/84;C07C39/16 |
主分类号 |
C07C37/84 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|