发明名称 |
Efficient methods for making tetrahalophthalate esters having excellent purity |
摘要 |
Provided are methods for the preparation and purification of alkyl tetrahalophthalate esters by the reaction of a tetrahalophthalic compound with an alkanol in the presence of a titanate catalyst. More particularly, improved methods are provided for making and recovering an ester with little contamination by catalytic metal components and color bodies, and with little acidity, in a high yield from the esterification reaction by pretreating the starting materials to reduce the acidity thereof, reacting the starting materials in the presence of a titanate catalyst, stripping excess alcohol, hydrolyzing the catalyst, and filtering out solids to yield a high purity tetrahalophthalate ester product.
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申请公布号 |
US6150552(A) |
申请公布日期 |
2000.11.21 |
申请号 |
US19990343316 |
申请日期 |
1999.06.30 |
申请人 |
GREAT LAKES CHEMICAL CORPORATION |
发明人 |
SCHREIER, JEFFREY A.;SIEBECKER, JAMES D.;MACK, ARTHUR G. |
分类号 |
C07C67/08;C07C67/48;(IPC1-7):C07C69/76;C08K5/09 |
主分类号 |
C07C67/08 |
代理机构 |
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主权项 |
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地址 |
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