SYNTHESIS AND PROPERTIES OF POLY(MONOCYCLIC ORTHOCARBONATE)S

被引：9

作者：

KOMATSU, S ^{[1
]}

TAKATA, T ^{[1
]}

ENDO, T ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,RESOURCES UTILIZAT RES LAB,4259 NAGATSUTA CHO,MIDORI KU,YOKOHAMA,KANAGAWA 227,JAPAN

来源：

MACROMOLECULES | 1992年 / 25卷 / 26期

关键词：

D O I：

10.1021/ma00052a033

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Aromatic poly(monocyclic orthocarbonate)s were synthesized by the reaction of 2,2-dichloro-1,3-benzodioxole (1) with various aromatic diphenols, and their properties were examined. Yields of the polymers were quantitative, independent of the structure of the diphenols. Number-average molecular weights (M(n)BAR) ranged from 14 000 to 69 000 and increased with increasing nucleophilicity of the phenolic hydroxy group. Structural evidence for the poly(monocyclic orthocarbonate)s was obtained from its H-1-NMR, C-13-NMR, and IR spectra as well as elemental analysis. All polymers were amorphous and formed clear flexible films by casting from solution. The glass transition temperatures (T(g)) of the polymers were in a range from 88 to 135-degrees-C. The polymers lost 10% of their weight at around 340-degrees-C under nitrogen. They were fairly stable toward electrophilic agents such as BF3OEt2, hydrogen chloride, or acetyl chloride in chlorobenzene at 100-degrees-C for 12 h.

引用

页码：7286 / 7293

页数：8

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