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发明名称
对苯二甲酸之氧化纯化方法
摘要
本发明系揭示一种制备纯化羧酸浆液之方法。该方法包括在固液置换区内,自结晶产物移除杂质,形成该纯化羧酸浆液。进一步在冷却区内冷却该纯化羧酸浆液,并接着过滤,然后在过滤及乾燥区内经过滤并乾燥。不必使用像氢化或滤液涤洗之纯化步骤,本发明可制备具有良好颜色及低杂质含量之纯化羧酸产物。
申请公布号
TW200418787
申请公布日期
2004.10.01
申请号
TW092134189
申请日期
2003.12.04
申请人
伊士曼化学公司
发明人
朗诺 布佛 雪佛;布兰 亚伦 谭能;汤玛斯 厄尔 伍卓夫;罗伯 林
分类号
C07C51/42
主分类号
C07C51/42
代理机构
代理人
陈长文
主权项
地址
美国
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