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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 14, Number 6
BKCSDE 14(6)
June 20, 1993 

 
Title
Polymerization of p-Chlorophenyl Propargyl Ether by Molybdenum- and Tungsten- Based Catalysts
Author
Won-Chul Lee, Jang-Hyuk Seo*, Yeong-Soon Gal**, Sung-Ho Jin***, Sam-Kwon Choi***
Keywords
Abstract
The Polymerization of p-chlorophenyl propargyl ether (CPE) was carried out using various transition metal catalysts. The catalytic activity of MoCl5-based catalysts was greater than that of WCl6-based catalysts. MoCl5, alone and MoCl5-cocatalyst systems polymerized CPE very effectively to give a high yield of poly(CPE). In most cases, the polymer yield was quantitative and the average molecular weight (Mn) was in the range of 9,000 and 17,000. The NMR, IR, UV-visible spectra indicated that the present poly(CPE) has a linear conjugated polyene structure having p-chlorophenyl oxymethylene substituent. The poly(CPE) was mostly dark-brown colored powder and was completely soluble in various organic solvents such as chloroform, methylene chloride, THF, chlorobenzene, etc. The X-ray diffraction analysis indicated that the present poly(CPE) is amorphous.
Page
708 - 712
Full Text
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