STUDIES ON THE RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN Ⅳ. COPOLYMERIZATION OF TETRAHYDROFURAN AND PROPYLENE OXIDE INITIATED BY FUMING SULFURIC ACID AND PERCHLORIC ACID CATALYST SYSTEM

ZHANG Hongzhi; GAO Guozhen; WANG Yin; FENG Xinde （S. T. Voong）

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STUDIES ON THE RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN Ⅳ. COPOLYMERIZATION OF TETRAHYDROFURAN AND PROPYLENE OXIDE INITIATED BY FUMING SULFURIC ACID AND PERCHLORIC ACID CATALYST SYSTEM

Papers | Updated：2021-06-21

- STUDIES ON THE RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN Ⅳ. COPOLYMERIZATION OF TETRAHYDROFURAN AND PROPYLENE OXIDE INITIATED BY FUMING SULFURIC ACID AND PERCHLORIC ACID CATALYST SYSTEM
- Vol. 1, Issue 1, Pages: 25-31(1983)
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- Published：20 July 1983
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ZHANG Hongzhi, GAO Guozhen, WANG Yin, et al. STUDIES ON THE RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN Ⅳ. COPOLYMERIZATION OF TETRAHYDROFURAN AND PROPYLENE OXIDE INITIATED BY FUMING SULFURIC ACID AND PERCHLORIC ACID CATALYST SYSTEM[J]. 1983, 1(1): 25-31.
DOI：

ZHANG Hongzhi, GAO Guozhen, WANG Yin, et al. STUDIES ON THE RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN Ⅳ. COPOLYMERIZATION OF TETRAHYDROFURAN AND PROPYLENE OXIDE INITIATED BY FUMING SULFURIC ACID AND PERCHLORIC ACID CATALYST SYSTEM[J]. 1983, 1(1): 25-31. DOI：

摘要

The yield of copolymerization of tetrahydrofuran and propylene oxide (THF:PO=100:5—15

by wt.) using a binary catalyst of fuming sulfuric acid (21% or 28%) and perchloric acid is around 50—60%

and the loss of THF in the reaction is below 10—15%. The average molecular weight of the product can be controlled in the range of 1000—2000 by varying the binary catalyst system. The present method

which is different from the usual copolymerization initiated by BF3-diol or SbCl5-diol system

shows the pecularities i.e.the yield of copolymerization with the low PO feed is not decreased

the hydroxyl funcitonality is equal to 2

and the end-groups are predominantly primary hydroxyls(around 65-70%).

Abstract

The yield of copolymerization of tetrahydrofuran and propylene oxide (THF:PO=100:5—15

by wt.) using a binary catalyst of fuming sulfuric acid (21% or 28%) and perchloric acid is around 50—60%

which is different from the usual copolymerization initiated by BF3-diol or SbCl5-diol system

shows the pecularities i.e.the yield of copolymerization with the low PO feed is not decreased

the hydroxyl funcitonality is equal to 2

and the end-groups are predominantly primary hydroxyls(around 65-70%).

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