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Synthesis and properties of high‐performance and good water‐soluble melamine–formaldehyde resin
Author(s) -
Su Lihong,
Qiao Shengru,
Xiao Jun,
Tang Xuan,
Zhao Guodong,
Fu Shengwang
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1782
Subject(s) - formaldehyde , melamine , sodium sulfite , melamine resin , solubility , polymer chemistry , chemistry , sulfite , condensation , sodium bisulfite , nuclear chemistry , materials science , chemical engineering , organic chemistry , sodium , physics , engineering , thermodynamics , coating
In this article, high‐sulfonated melamine–formaldehyde (HSMF) resins were prepared with a sulfite/melamine (S/M1.5) molar ratio. During the sulfonation process, the reaction temperature and the added velocity of sodium bisulfite affecting the properties of the resin were studied. In the condensation stage, where the pH range is 6.0 and the temperature is about 25°C, the condensation time was prolonged above 24 h. The stability and water solubility of the resin was improved greatly. It is an effective superplasticizer at small dosages of admixture. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 3268–3271, 2001