Synthesis and Characterization of Coumarin–Trioxane–Urea Copolymers
1996 ◽
Vol 8
(2)
◽
pp. 295-300
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Keyword(s):
4-methyl-7-hydroxycoumarin trioxane urea (MHCTU) copolymers were prepared by copolycondensation of 4-methyl-7 hydroxycoumarin (MHC), trioxane (T) and urea (U) in the presence of 2 M HCl/H2SO4 as a catalyst with different molar ratios of reacting monomers. The copolymers were characterized by elemental analysis, IR spectral and TGA studies. The number average molecular weight ( Mn) of all the produced copolymers was determined by non-aqueous titrimetry.
2014 ◽
Vol 92
(6)
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pp. 525-532
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1986 ◽
Vol 4
(3)
◽
pp. 249-260
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1972 ◽
Vol 76A
(2)
◽
pp. 161
◽
2004 ◽
Vol 2
(2)
◽
pp. 53-57
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