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The ir spectra and structural peculiarities of several types of industrial phenol-formaldehyde resins

✍ Scribed by N. I. Makarevich; N. I. Sushko; A. I. Ivanov; T. I. Glazova


Publisher
Springer US
Year
1973
Tongue
English
Weight
321 KB
Volume
18
Category
Article
ISSN
0021-9037

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## Abstract Phenol‐urea‐formaldehyde (PUF) resins were synthesized by reacting mixture of methylolureas (MMU), phenol, and formaldehyde. The structure of PUF cocondensed resins at different stages of reaction were analyzed by liquid ^13^C nuclear magnetic resonance (NMR) spectroscopy. The liquid ^1