| 发明名称 |
PROCESS FOR PREPARING TETRAKIS(3-(3,5-DI-tert-BUTYL-4-HYDROXYPHENYL)PROPIONYLOXYMETHYL)METHANE. |
| 摘要 |
<p>Tetrakis(3-(3,5-di-tert.-butyl-4- hydroxyphenyl) propionyloxy methyl)methane (I) is prepd. by ester-exchange of pentaerythritol with 3-(3,5-di-tert.butyl- 4-hydroxyphenyl)propionic acid alkyl ester (II) in the presence of 3-(3-tert.butyl-4-hydroxyphenyl) propionic acid alkyl ester (III) and of a basic catalyst (e.g. 0.1-10% by wt. relative to (II) of an organic tin cpd.). The ratio of (III) to (II) is pref. 0.1-5.0% by wt.</p> |
| 申请公布号 |
EP0300055(A1) |
申请公布日期 |
1989.01.25 |
| 申请号 |
EP19880901317 |
申请日期 |
1988.02.01 |
| 申请人 |
YOSHITOMI PHARMACEUTICAL INDUSTRIES, LTD. |
发明人 |
GOHBAYASHI, MASAYOSHI;NARITA, NORITSUGU;MARUNO, MAKOTO |
| 分类号 |
B01J31/02;B01J31/00;B01J31/12;C07B61/00;C07C67/03;C07C69/003;C07C69/612;C07C69/732;(IPC1-7):C07C69/732 |
主分类号 |
B01J31/02 |
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