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IR spectroscopic study of structure of matrix pqlyconcondensation products of urea and formaldehyde on carboxymethylcellulose

✍ Scribed by G. I. Mukhamedov; M. M. Khafizov; M. N. Khasankhanova; Kh. T. Sharipov

Publisher
Springer US
Year
1988
Tongue
English
Weight
294 KB
Volume
49
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