Preparation of Telecbelic Poly (metbyl methacrylate) with 1- [4- (2-Hydroxyethyl) ] pbenyl-1-phenylethylene Whose Hydroxyl Group Is Protected by tert-Butyl or Trimethylsilyl Groups

α-Hydroxy-ω-carboxy poly (methyl methacrylate) was prepared by anionic polymerization. The initiatnr was formed by the reaction between n-butyllithium and 1, 1-diphenylethylene derivative having protected hydroxyl group. This reaction was followed by termination with carbon dioxide and then deprotec...

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Bibliographic Details
Published inKOBUNSHI RONBUNSHU Vol. 49; no. 10; pp. 801 - 808
Main Authors OHATA, Masatoshi, ISONO, Yoshinobu
Format Journal Article
LanguageJapanese
Published The Society of Polymer Science, Japan 25.10.1992
Subjects
Carbon Dioxide
Carboxyl
Hydroxyl
Living Anionic Polymerization
Poly (methyl methacrylate)
Protecting Group
Telechelic Polymer
tert-Butyl
Trimethylsilyl
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Summary:α-Hydroxy-ω-carboxy poly (methyl methacrylate) was prepared by anionic polymerization. The initiatnr was formed by the reaction between n-butyllithium and 1, 1-diphenylethylene derivative having protected hydroxyl group. This reaction was followed by termination with carbon dioxide and then deprotection. The resultant polymer was characterized by osmometry, GPC, 1H NMR, and potentiometric titration. It was found to be pure and to have a fairly narrow molecular weight distribution. The protection ability of tert-butyl group in anionic polymerization was found to be as high as that of tert-butyldimethylsilyl group and much higher than that of trimethylsilyl group.
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.49.801