Creating new materials with melamine resins

Weber, Björn; Bremser, Wolfgang; Hiltrop, K.

doi:10.1016/j.porgcoat.2008.08.032

Cited by 17 publications

(18 citation statements)

References 7 publications

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“…In Europe, industrial applications include coatings for cans, coils, and automobiles (Rink, 2008;Weiss, 1997). Furthermore, HMMM is used for the formation of melamine nanoparticles and for the production of castings (Weber et al, 2009). Because of its high production volume in the United States, the compound was included in a special program of the U.S. Environmental Protection Agency (U.S. EPA), during which existing data on the properties of HMMM were assessed (U.S. EPA, 2004EPA, , 2007.…”

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confidence: 99%

Hexa(methoxymethyl)melamine: An Emerging Contaminant in German Rivers

Dsikowitzky¹,

Schwarzbauer²

2015

Water Environment Research

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Hexa(methoxymethyl)melamine (HMMM)-containing resins are used in the production of coatings and plastics for cans, coils, and automobiles. A previous study demonstrated that this compound was associated with acute toxic effects on daphnia. This study presents the first compiled data on the occurrence of HMMM as an emerging contaminant in German rivers. The compound occurred in 60 of 117 water samples from three river systems, with concentrations ranging between <10 and 880 ng/L. Based on water concentrations and river flow on the day of sampling, the loads of HMMM were calculated for two rivers. The spatial distribution patterns of the loads showed large variations and did not follow clear trends along the stream course. These variations were attributed to effective removal processes, leading to sudden load decreases within short flow distances. The data suggest that HMMM could be discharged to the investigated rivers with wastewaters from the automotive industry and related branches. Water Environ. Res., 87, 461 (2015).KEYWORDS: 2,4,6-tris[bis(methoxymethyl)amino]-l,3,5-triazine, river w ater, em erging pollu tan ts, in d u strial effluents, hexakis(methoxymethyl)melamine.

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confidence: 99%

Hexa(methoxymethyl)melamine: An Emerging Contaminant in German Rivers

Dsikowitzky¹,

Schwarzbauer²

2015

Water Environment Research

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“…pigment particles the self-condensation of the MF resin may yield an additional heterogeneity of the polymer phase due to a pronounced anisotropic alignment of the aromatic melamine cores. This was also found to form hierarchical ordered structures over several length scales in the heterophasic selfcondensation of hexamethoxy melamine formaldehyde resin in water (Weber et al, 2009). Besides the intrinsic toughness of the polymer phase stemming from the main chain segment flexibility and the intermolecular formation of reversible hydrogen bonds which favour plastic 1 Hydroxyl-as well as acid numbers are defined as the amount of potassium hydroxide that would be consumed for the neutralization of these Brønstedt acids present within one gram of the solid (= nonvolatile) material.…”

Section: Automotive Primermentioning

confidence: 78%

Nanocomposite Based Multifunctional Coatings

Hintze-Bruening¹,

Leroux²

2012

New Advances in Vehicular Technology and Automotive Engineering

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“…13 C NMR spectra (nuclear magnetic resonance spectroscopy) were acquired on a Bruker DPX-400 operating at 400.1 MHz using D 2 O as solvent.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Waterborne Colloidal Polymer/Silica Hybrid Dispersions and Their Assembly into Mesoporous Poly(melamine-formaldehyde) Xerogels

Schwarz

Weber

2015

Langmuir

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The acid-catalyzed polycondensation of oligo-(melamine-formaldehyde) in aqueous phase and in the presence of silica nanoparticles leads to a stable dispersion of coexisting silica and polymer nanoparticles. The dispersion can be processed into mesoporous xerogels (S BET ≈ 200 m 2 g −1 ), whose porosity can be enhanced by etching of silica up to specific surface areas of >400 m 2 g −1 . The formation mechanism and the characteristics of the hybrid dispersion are crucial to the materials derived from it and analyzed in detail using a variety of experimental techniques (electron and force microscopy, light and X-ray scattering, ultracentrifugation, and spectroscopy). The transformation of the dispersion into xerogels by electrostatic destabilization is described. Furthermore, the obtained materials are characterized with regard to their porosity and morphology using microscopy and porosimetry. The impact of selected synthesis parameters on the obtained properties is discussed, and it was found (most interestingly) that stable porosity was only observed if silica nanoparticles were present within the dispersion.

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Creating new materials with melamine resins

Cited by 17 publications

References 7 publications

Hexa(methoxymethyl)melamine: An Emerging Contaminant in German Rivers

Hexa(methoxymethyl)melamine: An Emerging Contaminant in German Rivers

Nanocomposite Based Multifunctional Coatings

Waterborne Colloidal Polymer/Silica Hybrid Dispersions and Their Assembly into Mesoporous Poly(melamine-formaldehyde) Xerogels

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