发明名称 |
Process for producing tetrabromobenzoate esters |
摘要 |
A method for preparing tetrabromobenzoate ester from a tetrabromophthalic anhydride including the steps of reacting the tetrabromophthalic anhydride with a catalyst and an alcohol at a temperature that favors partial esterification over complete esterification of the tetrabromophthalic anhydride to form a tetrabromophthalate half-ester reaction mixture; and feeding the half-ester reaction mixture to at least one reactor having and maintaining a temperature that favors decarboxylation over esterification to produce a tetrabromobenzoate ester-containing product. The temperature favoring partial esterification of the tetrabromophthalic anhydride is between about 70° C. and 130° C. The temperature favoring decarboxylation over esterification is between about 190° C. and 205° C. The tetrabromobenzoate ester-containing product comprises at least about 85% tetrabromobenzoate ester. The at least one reactor may include two or more reactors connected to one another in series.
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申请公布号 |
US7307183(B2) |
申请公布日期 |
2007.12.11 |
申请号 |
US20030629888 |
申请日期 |
2003.07.29 |
申请人 |
GREAT LAKES CHEMICAL CORPORATION |
发明人 |
BARTLEY DAVID W.;SIEBECKER JAMES D.;FALLOON STEPHEN B. |
分类号 |
C07C69/76;C07C67/08;C07C67/32;C08K5/00 |
主分类号 |
C07C69/76 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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