Improving indoor air quality with amino alcohols / Mark Langille in SURFACE COATINGS INTERNATIONAL, Vol. 106.1 (01-02/2023)  

[article]  inSURFACE COATINGS INTERNATIONAL > Vol. 106.1 (01-02/2023) . - p. 52-55 Titre : Improving indoor air quality with amino alcohols Type de document : texte imprimé Auteurs : Mark Langille, Auteur ; Romain Severac, Auteur Année de publication : 2023 Article en page(s) : p. 52-55 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Air -- Epuration Air intérieur Amino-alcools Dépolluants Formaldéhyde -- Elimination Formulation (Génie chimique) Matériaux -- Propriétés fonctionnelles Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Revêtements intérieurs:Peinture intérieure Index. décimale : 667.9 Revêtements et enduits Résumé : Amino alcohols based on ANGUS chemistry can assist formulators in creating more environmentally-friendly paints and coatings. Multifunctional additives from ANGUS can be used to create low- and zero-VOC waterborne formulations, as well as low emissive coatings that qualify for green label certification programs. Amino alcohols are also highly effective formaldehyde scavengers that can be used to create functional coatings that improve indoor air quality.The level of hazardous air pollutants can be five times higher in indoor air than outdoor air and chronic exposure to these invisible indoor toxins, such as formaldehyde, can create long-term health problems. An attractive solution to reducing indoor formaldehyde levels is through a chemical remediation or scavenging system, and one of the emerging trends for the effective removal of indoor air contaminants is the use of functional coatings. We demonstrate how the unique functionality of amino alcohols can help improve indoor air quality by providing high-efficiency formaldehyde scavenging performance when used in waterborne architectural paints. Amino alcohol additives are highly effective at low dosages and do not require major reformulation work, enabling the creation of functional coatings to improve indoor air quality. Note de contenu : - ANGUS products for improving indoor air quality - Methodology - Formaldehyde Scavenging Test by ISO 16000-23 - Results - Table 1 : Base waterborne formulation - Table 2 : Performance of coatings formulations according to Chinese JC/T 1074-2008 standard - Fig. 1 : The evolution of more environmentally-friendly paints and the emergence of VOC remediation technologies - Fig. 2 : Analysis of airborne VOC concentrations in residences, daycare centres and schools in France - Fig. 3 : Reaction of AEPD VOX 1000 with two equivalents of formaldehyde to yield a bisoxazolidine - Fig. 4 : Reaction of TRIS AMINO with two equivalents yield a bisoxazolidine - Fig. 5 : Schematic of a small-scale testing chamber to monitor formaldehyde scavenging performance of a coating - Fig. 6 : Evaluation of scavenging performance according to 150 16000-23 test method En ligne : https://drive.google.com/file/d/1OxJWCAJhoNmjnT-pN6mzI03-xnzhdkXt/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38874 [article]

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Painting a more stable picture / Romain Severac in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2018)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 6 (06/2018) . - p. 18-22 Titre : Painting a more stable picture : Improving pigment dispersion and paint performance with versatile amino alcohols Type de document : texte imprimé Auteurs : Romain Severac, Auteur ; Yoann Fernandes, Auteur Année de publication : 2018 Article en page(s) : p. 18-22 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adsorption Agents dispersants (chimie) Alcanolamines Les alcanolamines sont des composés chimiques qui contiennent à la fois des groupes fonctionnels hydroxyle (-OH) et amino (-NH2, -NHR et -NR2) sur un squelette d' alcane . Le terme alcanolamine est un terme général qui est parfois utilisé comme sous-classification. Amino-alcools Dioxyde de titane Dispersions et suspensions Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : Alkanolamines, such as 2-amino-2-methyl-1-propanol (AMP) and 2-amino-2-ethyl-1,3-propanediol (AEPD), are commonly used as key stabilising agents in a wide range of water-borne paint formulations. Not all alkanolamines are equivalent but AMP and AEPD can be used to improve the pigment particle size distribution and exploit synergistic effects with common dispersing agents. Optimising the formulation in this way has the potential to reduce raw material costs while improving paint performance. Note de contenu : - AMP adsorption linked to particle surface - Improving TiO2 dispersion for best light scattering efficiency - AEPD reduces the need for dispersing agents - Low concentrations minimise common side effects - Amino alcohols boost pigment efficiency - Fig. 1 : Adsorption of AMP at the surface of several pigments - Fig. 2 : Adsorption average of AMP and AEPD at the surface of several TiO2 particles - Fig. 3 : Evolution of the particle size means of Tio2 slurries containing AMP and EPD - Fig. 4: Evolution of particle size of TiO2 Kronos 2190 slurries as a function of the dispersing time with difference neutralisers - Fig. 5 : Dispersant demand curves with several dispersing agents and TiO2 with and without 0.3 wt% AEPD - Table : Selected dispersing agents En ligne : https://drive.google.com/file/d/1H2HiS-JfIj9zhnf8oV3njp4eUbn8RMKZ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30720 [article]

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