发明授权
- 专利标题: Hindered hydroxyphenylalkanoates of substituted vicinal glycols
- 专利标题(中): 取代的维生素C的羟基苯甲酸酯
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申请号: US532126申请日: 1974-12-12
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公开(公告)号: US3987086A公开(公告)日: 1976-10-19
- 发明人: Martin Dexter , David Herbert Steinberg
- 申请人: Martin Dexter , David Herbert Steinberg
- 申请人地址: NY Ardsley
- 专利权人: Ciba-Geigy Corporation
- 当前专利权人: Ciba-Geigy Corporation
- 当前专利权人地址: NY Ardsley
- 主分类号: C09K15/08
- IPC分类号: C09K15/08 ; C07C67/00 ; C07C69/732 ; C07C69/76 ; C07C69/88 ; C07C313/00 ; C07C319/20 ; C07C323/12 ; C08K5/00 ; C08K5/13 ; C08K5/134 ; C08K5/36 ; C08K5/37 ; C08L1/00 ; C08L7/00 ; C08L21/00 ; C08L23/00 ; C08L27/00 ; C08L33/00 ; C08L33/02 ; C08L51/00 ; C08L51/02 ; C08L67/00 ; C08L77/00 ; C08L101/00 ; C09K15/06 ; C09K15/14 ; C10M129/76 ; C10N30/10
摘要:
The compounds are esters having the formula ##EQU1## wherein R.sub.1 is alkyl, cycloalkyl, alkylthioethyl or alkylpolyoxyalkylene, Z is oxygen or sulfur, R.sub.2 is the group ##SPC1##R.sub.3 is hydrogen, alkyl, cycloalkyl, or .alpha.-methylbenzyl, R.sub.4 is alkyl or cycloalkyl, R.sub.5 is hydrogen or alkyl, provided when R.sub.3 is hydrogen, R.sub.5 is alkyl and R.sub.4 is located on the carbon atom ortho to the hydroxyl group, and A is a covalent carbon bond or lower alkylene.
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