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    • 23. 发明授权
    • Block oligomers containing 2,2,6,6-tetramethyl-4-piperidyl groups as
stabilizers for organic materials
    • 含有2,2,6,6-四甲基-4-哌啶基的嵌段低聚物作为有机材料的稳定剂
    • US06046304A
    • 2000-04-04
    • US756225
    • 1996-11-25
    • Valerio BorzattaFabrizio Guizzardi
    • Valerio BorzattaFabrizio Guizzardi
    • C08K5/3477C07D20060101C07D401/14C08G73/02C08G73/06C08K20060101C08K5/3432C08K5/3492C08L79/00C08L79/02C08L79/04C07D403/00C07D403/12
    • C07D401/14C08K5/34926
    • Compounds of the formula (I) ##STR1## in which the polydispersity Mw/Mn is 1; n is 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15; the radicals R.sub.1 are for example hydrogen or C.sub.1 -C.sub.8 alkyl; R.sub.2 is for example C.sub.2 -C.sub.12 alkylene; the radicals A are independently of one another --OR.sub.3, --N(R.sub.4)(R.sub.5) or a group of the formula ##STR2## R.sub.3, R.sub.4 and R.sub.5, which are identical or different, are for example hydrogen or C.sub.1 -C.sub.18 alkyl,or --N(R.sub.4)(R.sub.5) is additionally a group of the formula ##STR3## with Y being --O--, --CH.sub.2 --, --CH.sub.2 CH.sub.2 -- or >N--CH.sub.3 ; X is --O-- or >N--R.sub.6 ; R.sub.6 is for example hydrogen or C.sub.1 -C.sub.18 alkyl; R is preferably a group of the formula ##STR4## and the radicals B have independently of one another one of the definitions given for A; with the proviso that in the individual recurrent units of the formula (I), each of the radicals B, R, R.sub.1 and R.sub.2 has the same or a different meaning.The indicated compounds are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers.
    • 其中多分散性+ E,ovs M + EE w / + E,ovs M + EE n为1的式(I)化合物; n为3,4,5,6,7,8,9,10,11,12,13,14或15; 基团R1是例如氢或C1-C8烷基; R2是例如C 2 -C 12亚烷基; 基团A彼此独立地为-OR3,-N(R4)(R5)或相同或不同的式R3,R4和R5的基团为例如氢或C1-C18烷基或-N( R4)(R5)另外是下式的基团,其中Y是-O - , - CH 2 - , - CH 2 CH 2 - 或> N-CH 3; X是-O-或> N-R6; R6是例如氢或C1-C18烷基; R优选为式的基团,基团B彼此独立地为A给出的定义之一; 条件是在式(I)的各个反复单元中,基团B,R,R 1和R 2中的每一个具有相同或不同的含义。 所指示的化合物可用作有机材料的光稳定剂,热稳定剂和氧化稳定剂,特别是合成聚合物。