Accueil
Résultat de la recherche
7 résultat(s) recherche sur le tag 'butyle'
Ajouter le résultat dans votre panier Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche
Associative polymer/latex dispersion phase diagrams. II : HASE thickeners / Edward Kostansek in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 6 (04/2005)
[article]
Titre : Associative polymer/latex dispersion phase diagrams. II : HASE thickeners Type de document : texte imprimé Auteurs : Edward Kostansek, Auteur Année de publication : 2005 Article en page(s) : p. 417-422 Note générale : Bibliogr. Langues : Américain (ame) Tags : Stabilité colloïdale Polymère associatif Propriété thermodynamique Etude expérimentale Peinture Application Effet concentration Dispersion Groupe hydrophobe latéral Méthacrylate de méthyle copolymère aqueuse Acrylate butyle Epaississant Polyélectrolyte d'éthyle Méthacrylique acide Dimension particule Matériau revêtement Floculation Agent surface Diagramme phase Latex Index. décimale : 667.9 Revêtements et enduits Résumé : The colloidal interactions ofHASE associative polymers and latexes in the presence of surfactant are complicated and subject to a number of variables. Both bridging and depletion flocculation can occur, in addition to good particle dispersion. Dispersion phase diagrams have been developed to help visualize these interactions. The various dispersion states can have a significant effect on coating formulations and film properties. Examples of dispersion phase diagrams are presented for a model HASE anionic associative thickener and various model latexes in the presence of sodium dodecylsulfate and nonionic surfactants. The major variables affecting dispersion behavior are associative polymer concentration, latex particle size, latex surface hydrophobicity, electrolyte concentration, and surfactant concentration. The dispersion phase behavior of the HASE systems is compared to that of HEUR thickened systems reported previously. A significant difference is that much less bridging flocculation is observed in the HASE systems. In addition, nonionic surfactants induced depletion flocculation in the HASE systems but not in the HEUR systems. DOI : 10.1007/BF02733884 En ligne : https://link.springer.com/content/pdf/10.1007%2FBF02733884.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3836
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 6 (04/2005) . - p. 417-422[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001483 - Périodique Bibliothèque principale Documentaires Disponible Effect of plasticizer on the thermal, mechanical, and anticorrosion properties of an epoxy primer / M. T. Rodriguez in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 7 (07/2005)
[article]
Titre : Effect of plasticizer on the thermal, mechanical, and anticorrosion properties of an epoxy primer Type de document : texte imprimé Auteurs : M. T. Rodriguez, Auteur ; Jose Javier Gracenea, Auteur ; Julio José Suay, Auteur ; R. Cabello, Auteur ; S. J. Garcia, Auteur Année de publication : 2005 Article en page(s) : p. 557-564 Note générale : Bibliogr. Langues : Américain (ame) Tags : Phtalique acide ester benzyle butyle Additif Etude expérimentale Corrosion sel Résistance corrosion Propriété dynamomécanique Optimisation Diester Relation formulation propriété Epoxyde résine Peinture primaire anticorrosion mécanique thermique Plastifiant Index. décimale : 667.9 Revêtements et enduits Résumé : The influence of the glass transition temperature and the mechanical and anticorrosion properties of factors such as the amount of plasticizer added to an epoxy primer were investigated by DSC (differential scanning calorimeter), DMA (dynamic mechanical analysis), stress-strain tests, salt fog spray tests, accelerated tests, and electrochemical tests. The addition of plasticizer results in a decrease in the glass transition temperature and a change in the mechanical properties. Different tests were carried out to the optimum percentage of plasticizer content (1.5-3% weight ratio to epoxy resin) required to obtain the maximum anticorrosion performance of the epoxy primer. These changes are explained by the structural-kinetic effect exerted by the plasticizer on the chemical crosslinking in the course of the epoxy network synthesis and the increase in the excess free volume. DOI : 10.1007/s11998-005-0015-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-005-0015-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3803
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 7 (07/2005) . - p. 557-564[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 002327 - Périodique Bibliothèque principale Documentaires Disponible Initiators for water-based acrylate emulsion polymerizations / Lea L. Anderson in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 855 (04/1996)
[article]
Titre : Initiators for water-based acrylate emulsion polymerizations Type de document : texte imprimé Auteurs : Lea L. Anderson, Auteur ; Wilfried M. Brouwer, Auteur Année de publication : 1996 Article en page(s) : p. 75-79 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Amorceurs (chimie)
Polyacryliques
Polymérisation
Revêtements en phase aqueuse:Peinture en phase aqueuseTags : 'Amorceur radicalaire' Perester 'Hydroperoxyde organique' 'Activité amorceur' 'Polymérisation rédox' 'Copolymérisation émulsion' Terpolymérisation Latex 'Acrylate butyle copolymère' 'Styrène 'Vinylique acétate 'Méthacrylate de méthyle 'Méthacrylique acide 'Etude expérimentale' Index. décimale : 667.9 Revêtements et enduits Résumé : Traditionally persulfates have been used as initiators in redox water-based polymerization systems. While persulfates are still used, the use of organic peroxides has increased during the past decade. This paper summarizes work which shows that organic peroxides can be used as highly effective monomer scavengers to reduce the levels of unreacted residual monomer in a latex. In addition, organic peroxides can be used in place of persulfates for initiating a redox polymerization and offer some advantages over persulfates. Note de contenu : - Styrene/n-butyl acrylate (40:60) latex
- Vinyl acetate/n-butyl acrylate/methacrylic acid (83:15:2) latex
- N-butyl acrylate/methacrylate/methacrylic acid (52:46:2) latex
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18336
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 855 (04/1996) . - p. 75-79[article]Réservation
Réserver ce document
Exemplaires (2)
Code-barres Cote Support Localisation Section Disponibilité 003515 - Périodique Bibliothèque principale Documentaires Disponible 003525 - Périodique Bibliothèque principale Documentaires Exclu du prêt Latex produced with carboxylic acid comonomer for waterborne coatings : Particle morphology variations with changing pH / Daisuke Fukuhara in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 2, N° 7 (07/2005)
[article]
Titre : Latex produced with carboxylic acid comonomer for waterborne coatings : Particle morphology variations with changing pH Type de document : texte imprimé Auteurs : Daisuke Fukuhara, Auteur ; Donald Sundberg, Auteur Année de publication : 2005 Article en page(s) : p. 509-516 Note générale : Bibliogr. Langues : Américain (ame) Tags : En semi discontinu Particule core shell Modélisation Etude expérimentale Microscopie électronique transmission Méthode étude Cinétique Effet concentration pH Agent surface anionique Méthacrylate de méthyle polymère Relation mise en oeuvre structure Polymérisation ensemencée Acrylate butyle copolymère Styrène Copolymérisation radicalaire Morphologie émulsion Méthacrylique acide Latex Index. décimale : 667.9 Revêtements et enduits Résumé : Carboxylic acid comonomers are often added to latex formulations to improve colloidal stability and to help control the physical structure of composite (core-shell type) particles. We have performed a systematic study of the incorporation of methacrylic acid (MAA) within styrene/butyl acrylate copolymer seed latices, and determined the eventual effect on the morphology of the composite particles when using a second-stage monomer that is either polar (MMA) or nonpolar (BMA). These latices have been produced in batch and semibatch reactions in the pH range of 3-7. At low pH, the MAA groups are not ionized, but at the higher pH they may be nearly completely ionized. Here, we report that for batch reactions carried out within the above pH range, the latex particle morphologies of the PMMA second-stage systems change dramatically with increasing pH, while those for the PBMA system do not change at all. These results show that one cannot easily generalize the effect of acid comonomers on the morphology of composite latex particles, as this depends upon the choice of the copolymers in the latex and the process characteristics of the polymerization reaction. DOI : 10.1007/s11998-005-0010-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-005-0010-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3798
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 2, N° 7 (07/2005) . - p. 509-516[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 002327 - Périodique Bibliothèque principale Documentaires Disponible Photodegradation of water-based acrylic coatings containing silica / Alison M. Morrow in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 70, N° 880 (05/1998)
[article]
Titre : Photodegradation of water-based acrylic coatings containing silica Type de document : texte imprimé Auteurs : Alison M. Morrow, Auteur ; Norman S. Allen, Auteur ; Michele Edge, Auteur Année de publication : 1998 Article en page(s) : p. 65-72 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Peinture eau' 'Dégradation photochimique' Feuil 'Méthacrylate de méthyle copolymère' 'Acrylate butyle Adjuvant Silice 'Mécanisme réaction' Durabilité 'Etude expérimentale' 'Agent matité' Index. décimale : 667.9 Revêtements et enduits Résumé : The durability of acrylic copolymer systems containing silica as a matting agent are investigated, with particular emphasis on the photodegradation process. The effects of the photodegradation process on the films are monitored chemically via reflectance FTIR spectroscopy and UV spectrophotometry and monitored physically via gloss levels, optical properties, film thickness, and film smoothness measurements of the cured film. The findings of this study show that as a result of photo-oxidation high levels of hydroperoxides are observed. In addition the FTIR results, which are discussed from a mechanistic point of view, indicate that functional group formations and crosslinking reactions which occur as a consequence of photodegradation, play a primary role. Therefore, this study suggests that silica can reduce the durability of acrylic based formulations and that the extent of this photodegradation appears to be dependent on silica type. Note de contenu : - EXPERIMENTAL : Materials - UV irradiation - Hydroperoxide analysis - FTIR analysis - Cured film properties
- RESULTS AND DISCUSSION : Hydroperoxide analysis - FTIR analysis - Anhydride formation - Lactone formation - Acetophenone formation - Vinyl ketone formation - Vinyl formation - Crosslinking reactions - Cured film propertiesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17996
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 70, N° 880 (05/1998) . - p. 65-72[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 003549 - Périodique Bibliothèque principale Documentaires Disponible Spray drying of low-Tg acrylic dispersions / M. Uminski in SURFACE COATINGS INTERNATIONAL, Vol. 81, N° 11 (11/1998)
PermalinkThe role of surfactant on the film formation of latex polymers / P. Nagarajan in PAINTINDIA, Vol. XLVI, N° 2 (02/1996)
Permalink