✦ LIBER ✦

Binary copolymerizations of N-antipyryl acrylamide with methyl methacrylate, butyl methacrylate, acrylonitrile and vinyl acetate

✍ Scribed by S.H. El-Hamouly; S.A. El-Kafrawi; N.N. Messiha

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 313 KB
Volume: 28
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(92)90283-8

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✦ Synopsis

Abstraet--N-Antipyryl acrylamide (NAA) monomer, (2,3 di-methyl-l-phenyl-5-oxo-3-pyrazolin-4-yl acryloylamine) was prepared by the reaction of 4-amino antipyrine with acryloyl chloride. Its structure was confirmed by i.r. and tH-NMR spectroscopy. Binary copolymerizations of this new monomer with methyl methacrylate (MMA), n-butyl methacrylate (BuMA), acrylonitrile (AN) and vinyl acetate (VA) were performed in dimethylformamide, using 1 mol % azobisisobutyronitrile as initiator at 65 °.

tH-NMR spectroscopy was used to determine the compositions of copolymers. Copolymerization parameters for each system were calculated by both the Fineman and Ross and Kelen and Tiid6s methods. The monomer reactivity ratios for the systems NAA-MMA, NAA-BuMA, NAA-AN and NAA-VA were found to be r t =0.

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