Polymeric antioxidants
    6.
    发明授权
    Polymeric antioxidants 失效
    聚合物抗氧化剂

    公开(公告)号:US07595074B2

    公开(公告)日:2009-09-29

    申请号:US10761933

    申请日:2004-01-21

    IPC分类号: A23D7/00

    摘要: A method of preparing a phenolic polymer comprising: a) protecting at least one hydroxyl group of a substituted or unsubstituted phenol represented by Structural Formula (XXIX), wherein: R11, R12, R13, R14 and R15 are independently —H, —OH, —NH, —SH, a substituted or unsubstituted alkyl or aryl group, a substituted or unsubstituted alkoxycarbonyl or aryloxycarbonyl group, a substituted or unsubstituted alkoxy group or a saturated or unsaturated carboxylic acid group; or R11, R12, R13, R14 or R15, in conjunction with an adjacent R11, R12, R13, R14 or R15, forms a substituted or unsubstituted alkylene dioxy group; provided that at least one of R11, R12, R13, R14 or R15 is a tert-butyl group 1-ethenyl-2-carboxylic acid or ester thereof, a substituted or unsubstituted alkylene dioxy group or a substituted or unsubstituted n-alkoxycarbonyl group, at least one of R11, R12, R13, R14 or R15 is a hydroxyl group, and at least one of R11, R12, R13, R14 and R15 is —H; with a protecting group, wherein thereby obtaining one or more protected hydroxyl groups; and b) polymerizing the substituted or unsubstituted phenol, thereby obtaining the phenolic polymer.

    摘要翻译: 一种制备酚醛聚合物的方法,包括:a)保护由结构式(XXIX)表示的取代或未取代的酚的至少一个羟基,其中:R 11,R 12,R 13,R 14和R 15独立地为-H,-OH, -NH,-SH,取代或未取代的烷基或芳基,取代或未取代的烷氧基羰基或芳氧基羰基,取代或未取代的烷氧基或饱和或不饱和羧酸基团; 或R11,R12,R13,R14或R15与相邻的R11,R12,R13,R14或R15结合形成取代或未取代的亚烷基二氧基; 条件是R11,R12,R13,R14或R15中的至少一个是叔丁基1-乙烯基-2-羧酸或其酯,取代或未取代的亚烷基二氧基或取代或未取代的正烷氧基羰基, R 11,R 12,R 13,R 14或R 15中的至少一个为羟基,R 11,R 12,R 13,R 14和R 15中的至少一个为-H; 与保护基,其中由此获得一个或多个被保护的羟基; 和b)使取代或未取代的苯酚聚合,由此得到酚类聚合物。