发明名称 |
Peroxyester preparation method |
摘要 |
The present invention relates to a process for the preparation of a peroxyester which can be used in particular in polymerizations, such as the polymerization of vinyl chloride, or in the thermosetting of polyester resins. This process comprises the reaction of a hydroxyhydroperoxide salt with an acid halide or an acid anhydride under the following conditions: the molar ratio Rb of the hydroxyhydroperoxide corresponding to the hydroxyhydroperoxide salt to the acid halide is between 0.5 and 1.5; or alternatively the molar ratio Rb' of the hydroxyhydroperoxide corresponding to the hydroxyhydroperoxide salt to the acid anhydride is between 1.0 and 3.0; the hydroxyhydroperoxide salt was prepared beforehand by reaction of the corresponding hydroxyhydroperoxide with a base according to a molar ratio Ra of the base to the hydroxyhydroperoxide of between 0.5 and 1.5; and this process is carried out in aqueous media. The invention also relates to an aqueous emulsion comprising the peroxyester obtained and to a polymerization process employing a radical initiator comprising this peroxyester.
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申请公布号 |
US2004176632(A1) |
申请公布日期 |
2004.09.09 |
申请号 |
US20040467782 |
申请日期 |
2004.04.16 |
申请人 |
GRIMALDI SANDRA;JEYARAJ GURUSAMY |
发明人 |
GRIMALDI SANDRA;JEYARAJ GURUSAMY |
分类号 |
C07C407/00;C07C409/00;C07C409/38;C08F2/22;C08F4/34;C08K5/14;(IPC1-7):C07C69/74 |
主分类号 |
C07C407/00 |
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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