Synthesis and properties of high-sulfonated melamine-formaldehyde resin

High‐sulfonated melamine–formaldehyde (HSMF) resins were prepared with 1.0–2.0 of sulfite/melamine (S/M) molar ratio. The factors affecting the preparation and the properties of the resin were studied. Chemical analysis indicated that there are 0.98–1.96 sulfonate groups per unit of the polymeric ch...

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Bibliographic Details
Published in:Journal of applied polymer science 1995-06, Vol.56 (12), p.1523-1526
Main Authors: Yunchao, Huang, Fansen, Zeng, Hu, Ye, Chunying, Liu, Zhaoqiang, Wu, Weining, Li, Shukai, Yu
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Polycondensation
Preparation, kinetics, thermodynamics, mechanism and catalysts
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Summary:High‐sulfonated melamine–formaldehyde (HSMF) resins were prepared with 1.0–2.0 of sulfite/melamine (S/M) molar ratio. The factors affecting the preparation and the properties of the resin were studied. Chemical analysis indicated that there are 0.98–1.96 sulfonate groups per unit of the polymeric chain. The viscosity of HSMF resins is lower than that of sulfonated melamine–formaldehyde (SMF) resins, and the HSMF resins are more effective superplasticizers at small dosages of admixture. © 1995 John Wiley & Sons, Inc.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1995.070561201