Synthesis and properties of 2,2,6,6-tetramethyl-1(1-phenethyloxy)piperidine, an initiator for living free radical styrene polymerization

被引:34
作者
Howell, BA [1 ]
Priddy, DB [1 ]
Li, IQ [1 ]
Smith, PB [1 ]
Kastl, PE [1 ]
机构
[1] DOW CHEM CO USA,DESIGNED THERMOPLAST RES,MIDLAND,MI 48667
关键词
D O I
10.1007/BF00556804
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
An initiator for living free radical polymerization may be prepared by trapping the benzylic ethylbenzene radical with the stable 2,2,6,6-tetramethylpiperidinyl-1-oxy (TEMPO) radical. The adduct, 2,2,6,6-tetramethyl-1-(1-phenethyloxy)piperidine (TMPEP), smoothly undergoes thermal fragmentation at temperatures approaching 140 degrees C to afford an active carbon radical capable of initiating polymerization and a passive mediating nitroxyl radical to reversibly cap and preserve the propagating polymer chain.
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页码:451 / 456
页数:6
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