发明名称 |
COESTERES DE PENTAERITRITA. |
摘要 |
Pentaerythritol co-esters derived from pentaerythritol, (3-alkyl-4-hydroxyphenyl)-alkanoic acids or an analog thereof and alkylthioalkanoic acids or lower alkyl esters of such acids are useful as stabilizers of organic material normally susceptible to oxidative and/or thermal deterioration. The co-esters are advantageously prepared by transesterification of such esters with pentaerythritol. Preferred co-esters are (I) pentaerythritol tris[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]-mono[3-n-dodecyl thiopropio nate] and (II) pentaerythritol bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]-bis[3-n-dodecylth iopropiona te). The co-esters are especially useful in stabilizing applications for which physical mixtures of (i) (3-alkyl-4-hydroxyphenyl)alkanoic acid esters of polyols with (ii) polyalkanol esters of alkylthioalkanoic acids have heretofore been proposed. |
申请公布号 |
ES2001010(A4) |
申请公布日期 |
1988.04.16 |
申请号 |
ES19870304284T |
申请日期 |
1987.05.14 |
申请人 |
MALLINCKRODT, INC. |
发明人 |
BAZZI, ALI A.;DUNSKI, NEIL |
分类号 |
C08K5/10;C07C67/00;C07C69/612;C07C69/732;C07C313/00;C07C323/16;C07C323/22;C07C323/52;C08K5/13;C08K5/24;C08K5/37;C08K5/375;C09K15/14 |
主分类号 |
C08K5/10 |
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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