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Influence of the synthesis conditions on the curing behavior of phenol–urea–formaldehyde resol resins

✍ Scribed by Guangbo He; Ning Yan

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
130 KB
Volume
95
Category
Article
ISSN
0021-8995

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The experimental time of 13 C-NMR quantitative analysis of phenol-formaldehyde resins was reduced so that quantitativeness was maintained. The quantitative spectra of 14 model resins were obtained using a gated decoupling technique suppressing the NOE. The paramagnetic additive, Cr(acac) 3 , was use