𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis–structure–performance relationship of cocondensed phenol–urea–formaldehyde resins by MALDI-ToF and 13C NMR

✍ Scribed by Guanben Du; Hong Lei; A. Pizzi; H. Pasch

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
645 KB
Volume
110
Category
Article
ISSN
0021-8995

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

13C-NMR study on the structure of phenol
13C-NMR study on the structure of phenol-urea-formaldehyde resins prepared by methylolureas and phenol
✍ Dongbin Fan; Jianmin Chang; Jianzhang Li; An Mao; Lita Zhang 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 213 KB 👁 2 views

## 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

Examination of selected synthesis parame
Examination of selected synthesis parameters for wood adhesive-type urea–formaldehyde resins by 13C NMR spectroscopy. III
✍ Moon G. Kim 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 254 KB 👁 1 views

## Abstract The varying polymer structures of wood adhesive‐type urea–formaldehyde resins resulting from different formaldehyde/first urea (F/U~1~) mole ratios used in the first step of resin manufacture were investigated using ^13^C. As the F/U~1~ mole ratio decreased progressively from 2.40 to 2.

Examination of selected synthesis parame
Examination of selected synthesis parameters for typical wood adhesive-type urea–formaldehyde resins by 13C-NMR spectroscopy. II
✍ Moon G. Kim 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 176 KB 👁 1 views

A particleboard adhesive-type urea-formaldehyde (UF) resin was made at a formaldehyde ratio of 2.10 and added with a second urea at low temperature to the typical final formaldehyde/urea ratio of 1.15. Time samples taken during heat treatments of the resin sample up to 70°C over a period of 250 min

Examination of selected synthesis parame
Examination of selected synthesis parameters for typical wood adhesive-type urea–formaldehyde resins by 13C NMR spectroscopy. I
✍ Moon G. Kim 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 195 KB 👁 1 views

Selected synthesis parameters of typical wood adhesive-type urea-formaldehyde (UF) resins were examined using the 13 C NMR spectroscopy. The monomeric hydroxymethylureas and methylene-ether derivatives formed in the initial alkaline reaction polymerize in the subsequent acidic reaction by forming me