Hindered phenolic nitro compounds as antioxidants
    4.
    发明授权
    Hindered phenolic nitro compounds as antioxidants 失效
    受阻酚硝基化合物作为抗氧化剂

    公开(公告)号:US4153597A

    公开(公告)日:1979-05-08

    申请号:US919011

    申请日:1978-06-26

    CPC分类号: C09K15/24 C08K5/32

    摘要: A stabilizer suitable for use to protect organic materials into which it is soluble or miscible against oxidative degradation having the general formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or a radical of the structure ##STR2## wherein "x" represents a tertiary butyl radical.

    摘要翻译: {PG,1 A稳定剂,适用于保护其可溶解或可溶于氧化降解的有机材料,具有通式{r1 {tc,1 {rb HO {M,1 {AB,1111 {MR,1 {AB ,7777 {MR,1 {US,5 {BN,4 {RD,11447799CCFF / 135 {A,2 {BN,DDD {A,6 {BN,BBB {A,4 {BN,4 {SD,5 {S ,5CH {HD 2 {L CH {HD 2 {AB,4 {M,1 {AD,8 O {MR,1 C {AB,4 OCH {HD 2 {L {M,1 {AB, HD 1 {MR,1 {AB,8 R {HD 2 {MR,1C(AB,4NO {HD 2 {RE,{PS {PS,其中R {HD 1 {L和R {HD 2 {L是低级烷基 或结构{r1 {tc,1 {rb {ab,4CH {HD 2 {AB,4 O {AB,4 {M,1 {AD,8 O {MR,1C(AB,4CH {HD 2 {L CH {HD 2 {US,5 {BN,4 {RD,11447799CCFF / 135 {A,3 {BN,333 {A,5 {BN,555 {A,4 {BN, 5 {S,5 {M,1 {AB,FFFF {MR,1 {AB,9999 {MR,1 OH {RE {PS {PS其中{37×{38 {0表示叔丁基。

    Process for making 3-(3,5-dialkyl-4-hydroxyphenyl)propionate esters of
hydroxyalkyloxamides
    9.
    发明授权
    Process for making 3-(3,5-dialkyl-4-hydroxyphenyl)propionate esters of hydroxyalkyloxamides 失效
    制备羟基烷氧基酰胺的3-(3,5-二烷基-4-羟基苯基)丙酸酯的方法

    公开(公告)号:US4263446A

    公开(公告)日:1981-04-21

    申请号:US43788

    申请日:1979-05-30

    IPC分类号: C07C233/16 C07C69/612

    CPC分类号: C07C233/16

    摘要: An improved method for making 3-(3,5-dialkyl-4-hydroxyphenyl)propionates of hydroxyalkyloxamides involved heating the hydroxyalkyloxamide with a lower alkyl ester of 3-(3,5-dialkyl-4-hydroxyphenyl)propionic acid in the presence of an alkanestannoic acid at a temperature of 150.degree. to 230.degree. C., the lower boiling alcohol being removed by distillation.

    摘要翻译: 制备羟基烷氧基酰胺的3-(3,5-二烷基-4-羟基苯基)丙酸的改进方法包括在3-(3,5-二烷基-4-羟基苯基)丙酸的低级烷基酯的存在下加热羟基烷氧基酰胺 在150〜230℃的温度下进行烷基茴香酸,通过蒸馏除去低沸点醇。