TELECHELIC POLYISOBUTYLENE WITH UNSATURATED END-GROUPS AND WITH ANHYDRIDE END-GROUPS

被引:21
|
作者
WALCH, E [1 ]
GAYMANS, RJ [1 ]
机构
[1] TWENTE UNIV TECHNOL,DEPT POLYMER TECHNOL,POB 217,7500 AE ENSCHEDE,NETHERLANDS
关键词
TELECHELIC; POLYISOBUTYLENE; END GROUP MODIFICATION;
D O I
10.1016/0032-3861(94)90855-9
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Anhydride terminated polyisobutylene (PIB) oligomers were synthesized in a one- or two-step process from chlorine terminated oligomers. In the one-step process, chlorine functional oligomers were just heated in the presence of maleic anhydride (MA) for 12 h at 190-degrees-C without a catalyst. In the two-step process, the chlorine end functional groups were first converted by selective dehydrochlorination to isopropenylpoly-isobutylene end groups with t-BuOK in refluxing tetrahydrofuran during 16 h. In a second step, MA was coupled to the PIB with unsaturated end groups by reacting the oligomer with MA for 12 h at 190-degrees-C. These reactions could be followed by i.r. and n.m.r. The PIB-MA obtained had a functionality between 30% and 100%. In order to study the formation of amine functionalities, the PIB-MA was reacted with diamines. The coupling gave an imide bonding.
引用
收藏
页码:1774 / 1778
页数:5
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