APE-free phosphate surfactants in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4522 (03/2008)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4522 (03/2008) . - p. 22-26 Titre : APE-free phosphate surfactants Type de document : texte imprimé Année de publication : 2008 Article en page(s) : p. 22-26 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents mouillants Copolymère styrène acrylique Dispersions et suspensions Ester de phosphate Formulation (Génie chimique) Latex Polyacryliques Revêtements -- Additifs:Peinture -- Additifs Surfactants Index. décimale : 667.9 Revêtements et enduits Résumé : Phosphate ester surfactants have been widely used as primary anionic emulsifiers for emulsion polymerisation for many years. We are unaware of any published data related to phosphate ester product to effectiveness in latex syntheses. The introduction of this type of surfactant into paint formulation as a wetting and dispersing agent significantly enhance the overhall paint performance on gloss, colour acceptance and stain removal performance. Certain phosphate esters in low VOC formulations can replace glycols and other volatile reagents to improve open time, freeze-thaw and heat stability. The work described in this paper was undertaken to provide a framework for the use of this type of surfactant in pure-acrylic, styrene-acrylic latex synthesis. The overhall performance of phosphate ester surfactant in paint formulation is presented. The APE free Rhodafac employed in this study are complex phosphate ester of polyoxyethylene nonionic surfactants. They are mixtures of both mono- and diesters of the following generic structures. Phosphates ester surfactants are produced acid derivatives. Tipically, the commercial phosphate ester surfactant products are a mixture of monoester, diester and unreacted alcohols and phosphorics acids. Unreacted phosphoric acids are normally present as impurities. Typîcal levels of residual acids are given in. Rhodia's phosphation technology could produce products with superior mono / di alkyl phosphate (MAP/DAP) ratios and lower phosphoric acid content. Note de contenu : - EXPERIMENTAL : latex synthesis recipes and procedures - Salt solutions of Rhodafac surfactant - Latex properties - Paint formulation - RESULTS AND DISCUSSION : Phosphate ester surfactant in EP - Phosphate ester surfactant in paint application En ligne : https://drive.google.com/file/d/1gqnlVO8945uNOAX1NN_W8aJ5rCHppSDx/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27219 [article]

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Phytic acid based novel optically transparent intumescent fire-retardant coating for protection of combustible substrates with retention of aesthetic appearance / Raj Shree in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 2 (03/2022)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 2 (03/2022) . - p. 509-525 Titre : Phytic acid based novel optically transparent intumescent fire-retardant coating for protection of combustible substrates with retention of aesthetic appearance Type de document : texte imprimé Auteurs : Raj Shree, Auteur ; R. Baloji Naik, Auteur ; G. Gunasekaran, Auteur Année de publication : 2022 Article en page(s) : p. 509-525 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Composés organiques -- Synthèse Ester de phosphate Ignifugeants Composé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface. Intumescence (chimie) Phytique, Acide Polymères ramifiés Polyols Revêtements -- Propriétés mécaniques Revêtements -- Propriétés physiques Revêtements organiques Revêtements protecteurs Transparence (optique) Index. décimale : 667.9 Revêtements et enduits Résumé : Phosphorus source in transparent intumescent fire-retardant (IFR) coatings plays a crucial role in determining its performance against protecting structures from fire. In the present work, naturally occurring environmentally benign phosphorus-rich phytic acid (PA) was used as a phosphorus source. Phosphate ester resin (PER) was synthesized using PA and hyperbranched polyol (HBP), which was then used as a precursor for preparing optically transparent IFR coatings. The prepared PER was further modified with hydrogenated bisphenol-A (DGEHBA)-based epoxy resin in different wt% (25–100) to get PER-1, PER-2, PER-3, and PER-4, respectively. The formation of the PER resins was confirmed by Fourier transform infrared spectroscopy (FTIR), 13C-nuclear magnetic resonance, 31P-nuclear magnetic resonance spectroscopy (31P-NMR), and acid value analysis. The transparent IFR coatings were prepared by suitably mixing PER with hexamethoxy methyl melamine (HMMM) resin, and their performance was studied by measuring mechanical properties, optical transparency, thermal stability, fire retardancy, and smoke emission characteristics using various analytical instruments. The combination of PA and hyperbranched polyol improved the physicomechanical properties of PER-based transparent IFR coatings. The char formed after burning was also analyzed using FESEM and UTM. Results revealed that phytic acid and HBP combination increased the height as well as strength of the char. Among the prepared transparent IFR coatings, PER-0 and PER-1 have shown higher char height and strength. Note de contenu : - EXPERIMENTAL : Materials - Synthesis and modification of phosphate ester resin (PER) - Preparation of transparent IFR coating - CHARACTERIZATION - RESULTS AND DISCUSSION : Characterization of synthesized resins - Transparency characterization - Physicomechanical properties of the coatings - Characterization of char - Table 1 : Composition of different PER resins - Table 2 : Assignment of the peaks in FTIR spectra of raw materials and the synthesized resins - Table 3 : Physicomechanical properties of the transparent IFR coating - Table 4 : TGA data of the transparent IFR coatings - Table 5 : Fire-retardant properties of transparent IFR coatings DOI : https://doi.org/10.1007/s11998-021-00537-2 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00537-2.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37284 [article]

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Synthesis and application of a new phosphate ester based on nonionic amphiphilic polyurethane as leather fatliquoring agent / Hanping Li in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 12 (12/2016)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXI, N° 12 (12/2016) . - p. 427-434 Titre : Synthesis and application of a new phosphate ester based on nonionic amphiphilic polyurethane as leather fatliquoring agent Type de document : texte imprimé Auteurs : Hanping Li, Auteur ; Yong Jin, Auteur ; Baozhu Fan, Auteur ; Rui Qi, Auteur ; Xinfeng Cheng, Auteur Année de publication : 2016 Article en page(s) : p. 427-434 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Composés organiques -- Synthèse Essais (technologie) Ester de phosphate Huiles et graisses Polymères amphiphiles Polyuréthanes Produits de nourriture du cuir Résistance au jaunissement Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A new polyurethane phosphate ester (PUP-2) was successfully synthesized based on a nonionic amphiphilic polyurethane (PU-2). The structures and properties of PU-2 and PUP-2 were characterized by FTIR and surface tensiometer. The fatliquoring experiments were carried out in three different groups (treated with PUP-2 alone, with the complex of hexadecyl phosphate ester (SU) and PUP-2, or with the complex of SLP, PUP-2 and other commercialized fatliquoring agents, respectively). The physical and organoleptic properties of the resultant leathers were investigated and SEM was carried out in the study of fiber splitting. The leathers treated in the three different fatliquoring experiments all did not have fatty spew defect. Furthermore, the resultant leathers treated with PUP-2 alone or with the complex of SLP and PUP-2 had the advantage of resistance to yellowing. This new phosphate ester meets the requirements for the leathers with a good performance in resistance tu yellowing and avoiding fatty spew defect. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of hexadecyl phosphate ester (SLP), PU-2 and PUP-2 - Application on leathers - Description of the experimental tests - RESULTS AND DISCUSSION : Characterization of synthetic chemicals - Characterization of resultant leathers En ligne : https://drive.google.com/file/d/1HTMSzJxTl7hB64oXFXNtzp7vWZ3hDN2h/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27324 [article]

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Technical highlights from the 2022 American Coatings Conference / Leo J. Procopio in COATINGS TECH, Vol. 19, N° 5 (05-06/2022)  

[article]  inCOATINGS TECH > Vol. 19, N° 5 (05-06/2022) . - p. 16-23 Titre : Technical highlights from the 2022 American Coatings Conference Type de document : texte imprimé Auteurs : Leo J. Procopio, Auteur Année de publication : 2022 Article en page(s) : p. 16-23 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents coalescents Composés amphiphiles Dioxyde de titane Ester de phosphate Esters de glycidyle Lévulinates Lignine La lignine est un des principaux composants du bois, avec la cellulose, l'hémicellulose et des matières extractibles. La lignine est présente principalement dans les plantes vasculaires et dans quelques algues. Ses principales fonctions sont d'apporter de la rigidité, une imperméabilité à l'eau et une grande résistance à la décomposition. Toutes les plantes vasculaires, ligneuses et herbacées, fabriquent de la lignine. Quantitativement, la teneur en lignine est de 3 à 5 % dans les feuilles, 5 à 20 % dans les tiges herbacées, 15 à 35 % dans les tiges ligneuses. Elle est moindre pour les plantes annuelles que pour les vivaces, elle est maximum chez les arbres. La lignine est principalement localisée entre les cellules (voir parois pectocellulosiques), mais on en trouve une quantité significative à l'intérieur même de celles-ci. Bien que la lignine soit un réseau tridimensionnel hydrophobe complexe, l'unité de base se résume essentiellement à une unité de phénylpropane. La lignine est le deuxième biopolymère renouvelable le plus abondant sur la Terre, après la cellulose, et, à elles deux, elles cumulent plus de 70 % de la biomasse totale. C'est pourquoi elle fait l'objet de recherches en vue de valorisations autres que ses utilisations actuelles en bois d'Å“uvre et en combustible. Voie de biosynthèse : La lignine est une molécule dont le précurseur est la phénylalanine. Cet acide aminé va subir une cascade de réactions faisant intervenir une dizaine de familles d'enzymes différentes afin de former des monolignols. Ces enzymes sont : phénylalanine ammonia-lyase (PAL), cinnamate 4-hydroxylase (C4H), 4-coumarate:CoA ligase (4CL), hydroxycinnamoyl-CoA shikimate/quinate hydroxycinnamoyl transferase (HCT), p-coumarate 3-hydroxylase (C3H), caffeoyl-CoA o-methyltransferase (CCoAOMT), cinnamoyl-CoA reductase (CCR), ferrulate 5-hydroxylase (F5H), caffeic acid O-methyltransferase (COMT) et cinnamyl alcohol deshydrogenase (CAD). Dans un certain nombre de cas, des aldéhydes peuvent également être incorporés dans le polymère. Matériaux -- Propriétés fonctionnelles Nanotubes Piégeur de formaldéhyde Polymères -- Détérioration Revêtements (produits chimiques) Revêtements (produits chimiques):Peinture (produits chimiques) Revêtements -- Additifs Revêtements organiques Virucides Index. décimale : 667.9 Revêtements et enduits Résumé : The entire North American paint and coatings industry met in person for the first time in four years during the American Coatings Show and Conference, held in Indianapolis April 5–7. The last in-person exhibit and conference were held in 2018—two years prior to the COVID-19 pandemic. By all accounts, the 2022 conference and exhibit were overwhelming successes. People in the industry have been missing the in-person interaction for more than two years due to pandemic-related restrictions and were ready to get together to discuss all things concerning paint and coating. The American Coatings Conference consisted of nearly 760 attendees, all engaging in 90 presentations describing the latest advances in coatings technology. This article includes technical highlights from many of the sessions, which were held concurrently in four tracks. Further details can be found in the papers available in the proceedings of the conference. Some papers will also be published in future issues of CoatingsTech after peer review. The papers highlighted in this article will be presented according to some overarching themes that they addressed : Sustainability, Functional Coatings, Paint Fundamentals, and Additive Technologies. These brief summaries will hopefully serve to interest the reader to seek out the full papers and learn more about the thought-provoking topics presented during the conference. Note de contenu : - SUSTAINABILITY : The use of levulinates as coalescing agents in water-based coatings - Lignin as a raw material for production of biobased resins - Aliphatic glycidyl ethers as crosslinkers for high-performance NISO coatings - Improving the odds of success using a benign-by-design approach to product development - FUNCTIONAL COATINGS : Creating functinal coatings with formaldehyde-scavenging additives - The use of single-walled carbon nanotubes in coatings colorants - Key considerations for functional virucidal paints - PAINT FUNDAMENTALS : Separating the effects of TiO2 dispersion and photoactivity on paint durability - Improving application experience and applied hide for professional paints via additives optimization - ADDITIVE TECHNOLOGIES : reactive epoxy emulsifier for high-performance waterborne epoxy coatings - Improving water resistance of water-based coatings using reactive surfactants - Fluoro-free and silicone-free blocking resistance additives for waterborne coatings - Fig. 1 : Structures of levulinic acid and derivatives - Fig. 2 : Aliphatic tetrafunctional glycidyl ether based on the epoxidation of sorbitol - Fig. 3 : Reactions of formaldehyde scavenger tris(hydroxymethyl)aminomethane with formaldehyde to form mono- and bis-oxazolidines - Fig. 4 : Reaction pathways leading to the degradation of polymer in a coating. TiO2 *signifies TiO2 in an excited electronic state - Fig. 5 : General structure of amphiphilic phosphate esters and reaction scheme showing their synthesis from alcohols En ligne : https://drive.google.com/file/d/12b3ve5O2irEaTk0-Wue90XrdScFIAtWS/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37861 [article]

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