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Polycarboxylates – Essential and Multifunctional / R. Ettl in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 2/2009 (02-03/2009)
[article]
Titre : Polycarboxylates – Essential and Multifunctional Type de document : texte imprimé Auteurs : R. Ettl, Auteur ; V. Schwendemann, Auteur ; K. Schmidt, Auteur Année de publication : 2009 Article en page(s) : p. 112-117 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cristallisation
Inhibiteurs (chimie)
Polycarboxylates
RhéologieTags : Polycarboxylates Dispersants Modifieur rhéologie Inhibiteur Cristallogenèse Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Starting from a variety of monomers as building blocks, a whole range of synthetic homopolymers and random copolymers can be easily synthesized in the laboratory and many of these polymers are commercially available. Acrylic acid in particular is a convenient and versatile starting point leading to a huge range of different polymer structures generally known as polycarboxylates. A great deal of work has been published on the effects polycarboxylates provide in laundry detergents. They have a pronounced dispersing capacity for particulate soil and sparingly soluble salts such as calcium carbonate and thus they are able to counteract incrustation and redeposition of soil onto fabrics. The incorporation of side chains of different lengths and chemistry opened the field of highly efficient rheology modifiers. This synthetic development has been aided by an increased understanding of the mode of action on a molecular level. Knowledge about the interaction of water-soluble polymers with nonionic and ionic surfactants and with particles has grown significantly and is still an area of great interest. Further, recent studies have shed more light on the dynamics of crystal growth of calcium carbonate in various environments and the role of polycarboxylates and other polymers in this process. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4594
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 46, N° 2/2009 (02-03/2009) . - p. 112-117[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011181 - Périodique Bibliothèque principale Documentaires Disponible Cellulite, amincissement, lipolyse : quelle vérité ? / D. Emet in PARFUMS COSMETIQUES ACTUALITES, N° 138 (12/1997)
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Titre : Cellulite, amincissement, lipolyse : quelle vérité ? Type de document : texte imprimé Auteurs : D. Emet, Auteur Année de publication : 1997 Article en page(s) : p. 50-53 Langues : Français (fre) Catégories : Amincissants
Cellulite
Cosmétiques
LipolyseTags : Cosmétique 'Produit naturel' synthétique' Lipolytique Antagoniste 'Récepteur ?2-adrénergique' Inhibiteur Lipogenèse Amincissement Cellulite 'Peau pathologie' 'Tissu adipeux' Index. décimale : 668.5 Parfums et cosmétiques Résumé : En matière d'amincissement, la cosmétologie peut-elle apporter de véritables solutions ? Certains actifs-activateurs de lipolyse, inhibiteurs de récepteurs α-2, inhibiteurs de lipogénèse, protamine-semblent aujourd'hui très prometteurs. Note de contenu : - Définir l'indéfinissable
- Les régimes engraissent !
- Mesurer l'impondérable
- Et pourtant des actifs...
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19476
in PARFUMS COSMETIQUES ACTUALITES > N° 138 (12/1997) . - p. 50-53[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 002606 - Périodique Bibliothèque principale Documentaires Exclu du prêt Cerium acetate-modified aminopropylsilane triol : A precursor of corrosion-preventing coating for aluminum-finned condensers / T. Sugama in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 8 (10/2005)
[article]
Titre : Cerium acetate-modified aminopropylsilane triol : A precursor of corrosion-preventing coating for aluminum-finned condensers Type de document : texte imprimé Auteurs : T. Sugama, Auteur Année de publication : 2005 Article en page(s) : p. 649-659 Note générale : Bibliogr. Langues : Américain (ame) Tags : Propriété thermique Etude expérimentale Corrosion sel Protection corrosion Stabilité Effet concentration Polycondensation solution Préparation Acier Aluminium Couche protectrice anticorrosion Cérium Acétate Inhibiteur Amine polymère Siloxane Matériau revêtement Index. décimale : 667.9 Revêtements et enduits Résumé : A poly-acetamide-acetoxyl methyl-propylsiloxane (PAAMPS) polymer containing a cerium (Ce) oxide derivative was synthesized through three spontaneous reactions: condensation, amidation, and acetoxylation. The PAAMPS synthesizing took place between the Ce acetate dopant and aminopropylsilane triol (APST) as the film-forming precursor aqueous solution at 150°C. PAAMPS was evaluated for use as a corrosion-preventing coating for air-cooled condensers consisting of two metal components : aluminum fins and carbon steel tube. The key factors to ensuring the maximum performance of the PAAMPS/Ce oxide coating system in mitigating the corrosion of both aluminum and steel included (1) minimizing the content of non-reacted water-soluble APST and Ce acetate remaining in the coating, (2) lowering the susceptibility of the coating's surface to moisture, (3) precipitating a passive Ce3+ oxide (Ce2O3( film insensitive to Cl dissolution over the metal's surfaces, and (4) possessing excellent adhesion to the metal's surfaces. The combination of these factors considerably decreased the rate of the cathodic oxygen reduction reaction at the corrosion site of the metals. In fact, the corrosion rate, measured in milli-inches per year (mpy), of bare steel was reduced more than one order of magnitude by applying this coating. Correspondingly, the coating extended the useful lifetime of steel exposed in a salt-fog chamber at 35°C from only ~10 hr to ~768 hr. Furthermore, tins coating system far better protected an aluminum substrate from the corrosion than it did one of steel. Even a very thin nanoscale coating film deposited on the aluminum's surfaces reduced the corrosion rate, (mpy), by nearly two orders of magnitude over that of the bare aluminum. Also, the salt-spray resistance of aluminum panels covered by this nanoscale film was strikingly extended to more than 1440 hr, compared with -40 hr for bare aluminum. DOI : 10.1007/BF02774594 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02774594.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3790
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Code-barres Cote Support Localisation Section Disponibilité 003121 - Périodique Bibliothèque principale Documentaires Disponible Development of low temperature curing, 120°C, durable, corrosion protection powder coatings for temperature sensitive substrates / Glen Merfeld in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 8 (10/2005)
[article]
Titre : Development of low temperature curing, 120°C, durable, corrosion protection powder coatings for temperature sensitive substrates Type de document : texte imprimé Auteurs : Glen Merfeld, Auteur ; Mike Spicer, Auteur ; Debora Meredith, Auteur ; Steve Finley, Auteur ; Greg Garrett, Auteur ; Kevin Kovaleski, Auteur ; Mark Smith, Auteur ; Ken Gray, Auteur ; Ron Singh Warner, Auteur ; Pat Irwin, Auteur ; Joe Suriano, Auteur ; Chris Molaison, Auteur ; A. Ersin Acar, Auteur ; Rainer Koeniger, Auteur ; Steve Mordhorst, Auteur ; Tom Naguy, Auteur Année de publication : 2005 Article en page(s) : p. 661-668 Note générale : Bibliogr. Langues : Américain (ame) Tags : Etude expérimentale Inhibiteur corrosion Catalyseur Effet concentration Cinétique Réaction catalytique Durcissement(matière plastique) Ester polymère Aluminium Matériau revêtement Peinture poudre anticorrosion Index. décimale : 667.9 Revêtements et enduits Résumé : Commercial low temperature cure powder coatings, including candidates representative of all the major coating chemistries, were evaluated. Nearly all failed to adequately react at a cure schedule of 120°C for 30 min, and none, even when prepared at their manufacturer's lowest recommended cure conditions, met the stringent performance needs for temperature-sensitive military applications. Initial research is presented toward developing low temperature cure powder coatings that simultaneously meet all performance requirements at this target cure schedule. Using commercial resins, corrosion inhibitors, and catalysts, this research effort has closed gaps in low temperature cure coating performance and has helped to identify critical deficiencies. This study establishes direction for future developments in new resin and catalyst technologies. DOI : 10.1007/BF02774595 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02774595.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3791
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Code-barres Cote Support Localisation Section Disponibilité 003121 - Périodique Bibliothèque principale Documentaires Disponible Formulation and testing of a waterborne primer containing chestnut tannin / O. Pardini in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 913 (02/2001)
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Titre : Formulation and testing of a waterborne primer containing chestnut tannin Type de document : texte imprimé Auteurs : O. Pardini, Auteur ; Javier I. Amalvy, Auteur ; A. R. di Sarli, Auteur ; R. Romagnoli, Auteur ; V. F. Vetere, Auteur Année de publication : 2001 Article en page(s) : p. 99-106 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture eau émulsion anticorrosion primaire réactive Formulation Inhibiteur corrosion Tanin Phosphorique acide Acier Essai brouillard salin vieillissement accéléré Protection Etude expérimentale Acrylique dérivé polymère Index. décimale : 667.9 Revêtements et enduits Résumé : The development of a water-based pretreatment system containing chestnut tannin and phosphoric acid and the assessment of its anticorrosive properties through different conventional tests are discussed in this work. Treated steel panels coated with different paint systems were subjected to standardized (salt spray, humidity chamber, adhesion, and flexibility) and electrochemical (corrosion potential, EIS) tests. Electrochemical tests were performed by employing only panels coated with the wash primer to determine its protective effect. The binder employed in this research was prepared in the laboratory by emulsion polymerization of acrylic monomers. It was found that the tested formulation protected steel against corrosion by forming ferric tannate, which prevented oxide formation. After performing the salt spray tests, it was observed that no oxide spots developed on the scratch mark although some blisters were detected. The good stability of the binder in low pH media (pH: 2.0-2.5) and the binder/substrate interaction are decisive factors in the performance of this aqueous pretreatment system. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5691
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Code-barres Cote Support Localisation Section Disponibilité 001221 - Périodique Bibliothèque principale Documentaires Disponible Stabilization of aluminum pigment in waterborne paints / Bodo Müller in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 917 (06/2001)
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