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The preparation and properties of free films based on epoxydiane and phenol-formaldehyde oligomers

✍ Scribed by M.A. Markevich; A.I. Kuzayev; L.V. Vladimirov; D.P. Shaskin; M.R. Kiselev; V.V. Churakov

Book ID: 116047643
Publisher: Elsevier Science
Year: 1985
Weight: 663 KB
Volume: 27
Category: Article
ISSN: 0032-3950
DOI: 10.1016/0032-3950(85)90391-0

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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