发明名称 |
Methods of forming alpha, beta-unsaturated acids and esters |
摘要 |
The invention includes a method of forming an alpha, beta-unsaturated compound. A carboxylic acid is mixed with an alpha-hydroxy acid or an alpha-hydroxy ester and is esterified to form an alpha-acyloxy derivative. The alpha-acyloxy derivative is transformed into an alpha, beta-unsaturated derivative. The invention additionally includes a process of forming an acrylate. Lactic acid or a lactic acid ester is reacted with a first portion of acetic acid in the presence of a first catalyst to produce the corresponding 2-acetoxy propionic acid or ester. A non-reacted portion of the acetic acid is recycled. The 2-acetoxy propionic acid or ester is transferred to a second vessel containing a second catalyst, and acetic acid is liberated from the 2-acetoxy propionic acid or ester to produce a corresponding acrylic acid or acrylate ester. The acid or ester is subsequently esterified by reaction with an alcohol to form a desired acrylate ester.
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申请公布号 |
US6992209(B2) |
申请公布日期 |
2006.01.31 |
申请号 |
US20020315404 |
申请日期 |
2002.12.09 |
申请人 |
BATTELLE MEMORIAL INSTITUTE |
发明人 |
LILGA MICHAEL A.;WERPY TODD A.;HOLLADAY JOHNATHAN E. |
分类号 |
C07C69/66;C07B35/00;C07C51/377;C07C67/08;C07C67/30;C07C67/317 |
主分类号 |
C07C69/66 |
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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