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Crosslinker blends in two-component waterborne polyurethane / William O. Buckley in EUROPEAN COATINGS JOURNAL (ECJ), N° 10/97 (10/1997)
[article]
Titre : Crosslinker blends in two-component waterborne polyurethane Type de document : texte imprimé Auteurs : William O. Buckley, Auteur ; Marianne K. Groeneveld, Auteur Année de publication : 1997 Article en page(s) : p. 942-946 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Isocyanates
Liants
Polyols
Polyuréthanes
Réticulants
Revêtements bi-composant:Peinture bi-composant
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : This paper describes waterborne two-component polyurethane coatings based on novel polyol dispersions that meet or exceed the performance levels of typical solvent based systems. These coatings have the key advantage of using isocyanate crosslinkers normally employed in solvent borne systems without any modification or chemical change to the isocyanates being necessary. Using the new polyol dispersion, the isocyanates can be simply stirred in by hand to achieve a homogeneous dispersion ready for application. The polyols can be crosslinked with either single isocyanate crosslinkers or with crosslinker blends. This paper demonstrates that blending several of these isocyanates allows for wide formulation latitude in the resultant waterborne coatings. Note de contenu : - Appearance
- Hardness
- Adhesion
- Solvent resistance
- Impact resistancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11436
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Code-barres Cote Support Localisation Section Disponibilité 002532 - Périodique Bibliothèque principale Documentaires Disponible Degradable polyurethane based on triblock polyols composed of polypropylene glycol and e-caprolactone for marine antifouling applications / Jinghua Yao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 4 (07/2020)
[article]
Titre : Degradable polyurethane based on triblock polyols composed of polypropylene glycol and e-caprolactone for marine antifouling applications Type de document : texte imprimé Auteurs : Jinghua Yao, Auteur ; Zhengwei Dai, Auteur ; Yi Jie, Auteur ; Hongliang Yu, Auteur ; Bo Wu, Auteur ; Leyang Dai, Auteur Année de publication : 2020 Article en page(s) : p. 865-874 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biodégradation
Copolymères séquencés
e-caprolactone
Marines (peinture)
Polyéthylène glycol
Polyols
Polyuréthanes
Revêtements -- Biodégradation
Revêtements antisalissures:Peinture antisalissures
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Marine antifouling coatings require superior mechanical properties and effective antifouling. Degradable polyurethane (PU) coatings have a reputation for high performance. Degradable PU films were prepared by mixing triblock polyols [composed of polyether (polypropylene glycol or polyethylene glycol) and e;-caprolactone] and crosslinker agent (tolylene diisocyanate trimer). The hydrolytic degradation and water absorption experiments of PU films demonstrated that the PU films could erode in artificial sea water, which were mainly controlled by the hydrophilic property of the polyether. Marine field test revealed that degradable polyurethane had excellent efficiency in preventing biofouling for more than 9 months. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of triblock polyols - Preparation of PU films - Characterization of triblock polyols - Characterization of polyurethane films - Characterization of polyurethane coatings
- RESULTS AND DISCUSSION : Properties of triblock polyols - Properties of PU films - Properties of PU coatingsEn ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00313-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34376
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Code-barres Cote Support Localisation Section Disponibilité 21864 - Périodique Bibliothèque principale Documentaires Disponible Development of bio-based polyester-urethane-acrylate (PUA) from citric acid for UV-curable coatings / Debarati Maity in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
[article]
Titre : Development of bio-based polyester-urethane-acrylate (PUA) from citric acid for UV-curable coatings Type de document : texte imprimé Auteurs : Debarati Maity, Auteur ; Rahul Tade, Auteur ; Anagha S. Sabnis, Auteur Année de publication : 2023 Article en page(s) : p. 1083-1097 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Biopolymères
Bois -- Revêtements protecteurs
Caractérisation
Chimie analytique
Citrique, AcideL'acide citrique est un acide alpha hydroxylé de formule C6H8O7.
Il joue un rôle central dans le métabolisme de tous les organismes vivants et tient son nom de son origine; le citron.
L'acide citrique est biodégradable et n'est pas toxique pour l'homme ni pour l'environnement. Cependant, comme tout acide, il est irritant et peut provoquer des brûlures s'il entre en contact prolongé avec des muqueuses.
À pH physiologique, il est présent sous forme de sa base conjuguée, le citrate, qui est un chélateur de l'ion calcium dans le sang.
Copolymère uréthane acrylate
Polyesters
Polymères -- Synthèse
Polymères ramifiés
Polyols
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : A novel UV-curable hyperbranched polyester-urethane-acrylate (PUA) resin was successfully synthesized using citric acid as a core bio-based material and ester-urethane-acrylate linkage as the arm and was applied on both wood and metal substrates. Citric acid was employed as a functionality-enhancing bio-based monomer for coating applications. This resin (PUA) was synthesized from citric acid (CA)-based polyester-polyol (CAP) and subsequently reacted with isophorone diisocyanate (IPDI) and end-capped with 2-hydroxyethylmethacrylate (HEMA) to form a tetra-functional acrylate precursor (UCAP). Fourier-transform infrared spectroscopy (FTIR), proton nuclear magnetic resonance spectroscopy (1H-NMR) and gel permeation chromatography (GPC) were used to characterize the citric acid-based polyester-urethane-acrylate (UCAP). This oligomer was formulated with a reactive diluent and a photoinitiator (UCAP PUA), applied on both wood and metal substrates and cured under UV-radiation. The mechanical, chemical and thermal properties of the coated substrates were investigated and compared to a commercial urethane acrylate (CUA). The mechanical properties such as crosscut adhesion, pencil hardness, impact strength and flexibility showed comparable results. Even though the chemical resistance and free film properties of the synthesized urethane acrylate (UCAP) were found to be inferior, the thermal properties were observed to be superior. Note de contenu : - MATERIALS AND METHODS : Raw materials and chemicals - Synthesis of citric acid-based polyester-polyol (CAP) - Synthesis of citric acid based polyester-urethane-acrylate (UCAP) - Formulation of citric acid-based polyester-urethane-acrylate (UCAP PUA) - Characterizations and instrumentations
- RESULTS AND DISCUSSION : Chemical analysis - Instrumental analysis - Characterization of coated films
- Table 1 : Formulations of commercial and UCAP UV oligomers
- Table 2 : GPC analysis of CAP and UCAP
- Table 3 : Comparative optical and mechanical properties between commercial UA and UCAP PUA coatings
- Table 4 : Comparative chemical properties between commercial UA and UCAP PUA coatings
- Table 5 : Comparative free film properties between commercial UA and UCAP PUA coatings
- Table 6 : Comparative stain tests between commercial UA and UCAP PUA
- Table 7 : Comparative TGA data of Commercial UA and UCAP PUADOI : https://doi.org/10.1007/s11998-022-00728-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00728-5.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39449
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Code-barres Cote Support Localisation Section Disponibilité 24069 - Périodique Bibliothèque principale Documentaires Disponible Development of hyperbranched polyester polyol-based waterborne anticorrosive coating / Ashish Pratap Singh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 1 (01/2016)
[article]
Titre : Development of hyperbranched polyester polyol-based waterborne anticorrosive coating Type de document : texte imprimé Auteurs : Ashish Pratap Singh, Auteur ; C. Suryanarayana, Auteur ; R. Baloji Naik, Auteur ; G. Gunasekaran, Auteur Année de publication : 2016 Article en page(s) : p. 41-51 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acier L'acier est un alliage métallique utilisé dans les domaines de la construction métallique et de la construction mécanique.
L'acier est constitué d'au moins deux éléments, le fer, très majoritaire, et le carbone, dans des proportions comprises entre 0,02 % et 2 % en masse1.
C'est essentiellement la teneur en carbone qui confère à l'alliage les propriétés du métal qu'on appelle "acier". Il existe d’autres métaux à base de fer qui ne sont pas des aciers comme les fontes et les ferronickels par exemple.
Anticorrosion
Métaux -- Revêtements protecteurs
Polyesters
Polymères ramifiés
Polyols
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Water-soluble hydroxyl functionalized hyperbranched polyester (WH-HP) resin was synthesized using pentaerythritol, pyromellitic dianhydride, phthalic anhydride, and 1,1,1-tris(hydroxymethyl)propane. The synthesized WH-HP was characterized by spectroscopic (FTIR and NMR) as well as thermal (TGA and DSC) analysis. WH-HP and hexa methoxy methyl melamine (HMMM) resins were mixed in different mole ratios (1:2.5, 1:5, 1:7.5, and 1:10), coated on mild steel panel, and cured by baking at 110°C for 1 h. These coating compositions were evaluated for their mechanical and anticorrosive properties. It was observed that coating composition having 1:5 mol ratio (WH-HP:HMMM) has shown very good mechanical and anticorrosive properties compared to the rest. Note de contenu : - MATERIALS AND EXPERIMENTAL METHODS : Materials - Synthesis of polyester polyol (PP) - Synthesis of carboxyl-functionalized hyperbranched polyester (C-HP) - Synthesis of water-soluble hydroxyl-functionalized hyperbranched polyester resin (WH-HP) - Preparation of coating compositions
- CHARACTERIZATION : Acid value - Characterization of resins - Gel content - Gel permeation chromatography (GPC) analysis - Particle size analysis - Resistance in corrosion under different exposure conditions - Electrochemical impedance spectroscopy (EIS)
- RESULTS AND DISCUSSION : FTIR analysis - 1H and 13C NMR analysis - Thermal properties of films - Gel permeation chromatography (GPC) analysis - Gel content - Particle size distribution of WH-HP polymer - Mechanical properties - Solvent resistance - Anticorrosive propertiesDOI : 10.1007/s11998-015-9720-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9720-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25370
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Code-barres Cote Support Localisation Section Disponibilité 17819 - Périodique Bibliothèque principale Documentaires Disponible Development of moisture cure polyurethane–urea coatings using 1,2,3-triazole core hyperbranched polyesters / Sasidhar Kantheti in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 5 (09/2013)
[article]
Titre : Development of moisture cure polyurethane–urea coatings using 1,2,3-triazole core hyperbranched polyesters Type de document : texte imprimé Auteurs : Sasidhar Kantheti, Auteur ; Ramanuj Narayan, Auteur ; K. V. S. N. Raju, Auteur Année de publication : 2013 Article en page(s) : p; 609-619 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse thermomécanique dynamique
Antimicrobiens
Copolymère uréthane-urée
Fourier, Spectroscopie infrarouge à transformée de
Polyesters
Polymères ramifiés
Polyols
Réticulation à l'humidité
Revêtements:Peinture
Thermogravimétrie
TriazolesLes triazoles sont des composés organiques cycliques comportant un cycle à 5 atomes, comportant deux double liaisons et 3 atomes d'azote et donc de formule brute C2H3N3. Elles sont aromatiques et font partie des cycles excédentaires en électrons.
Selon la position des atomes d'azote, on distingue les 1,2,3-triazoles (appelées V-triazoles) et les 1,2,4-triazoles (appelées S-triazoles). (Wikipedia)Index. décimale : 667.9 Revêtements et enduits Résumé : This article reports the development of moisture cure polyurethane–urea coatings. The coating has been developed using different generations of novel 1,2,3-triazole core containing hyperbranched polyester polyols (THBP). For the synthesis of THBP, the core molecule, tetra hydroxyl-terminated di-triazole (THTD), has been synthesized by click reaction involving ethylene diazide and 2-butyne-1,4-diol. The polycondensation reaction between the core THTD and 2,2-bis (hydroxymethyl) propionic acid (Bis-MPA) at different mole ratios has been used to get first (THBPG-1), second (THBPG-2), and third (THBPG-3) generations of triazole core hyperbranched polyesters. The structural investigations of these THBPs have been carried out by 1H NMR, 13C NMR, and FTIR spectroscopy. The different generations of THBPs were further reacted with 1-isocyanato-4-[(4-isocyanatocyclohexyl) methyl] cyclohexane (H12-MDI) at OH:NCO ratio of 1:1.2 to get –NCO terminated triazole core hyperbranched polyurethanes. They were cured under atmospheric moisture to get hyperbranched polyurethane–urea coatings and were named as THBPUG-1, THBPUG-2, and THBPUG-3. FTIR has been used to confirm the formation of polyurethane coatings. The TGA and DMTA have been used to determine the thermal stability and dynamic mechanical properties of the coatings, respectively. The corrosion resistance properties of the coatings have been studied by salt spray and electrochemical test. The coatings were also evaluated for microbial resistance. The results indicate that the thermal stability, glass transition temperature, and corrosion resistance properties increase with an increase in generation number of THBPs used for coating development. All three generations of coating films show excellent antimicrobial activity. Based on overall combined structure–property relationship study, these types of coatings will be useful as multifunctional applications in marine and moist environments. Note de contenu : - EXPERIMENTAL DETAILS : Materials - Characterization methods - Synthesis of di-triazole core molecule - Synthesis of triazole core hyperbranched polyesters (THBPs) - Synthesis of hyperbranched polyurethane coating free films (THBPUs)
- RESULTS AND DISCUSSION : FTIR analysis - NMR analysis - Thermal analysis - DMTA analysis - Electrochemical test - Antimicrobial study of THBPU filmsDOI : 10.1007/s11998-013-9494-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9494-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19780
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Code-barres Cote Support Localisation Section Disponibilité 15618 - Périodique Bibliothèque principale Documentaires Disponible 15679 - Périodique Bibliothèque principale Documentaires Disponible Diol building block offers options for performance properties / Carl J. Sullivan in ADHESIVES AGE, Vol. 37, N° 8 (07/1994)
PermalinkEffect of cardanol diol on the synthesis, characterization, and film properties of aqueous polyurethane dispersions / Kattimuttathu I. Suresh in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 4 (07/2014)
PermalinkEffect of solvents and dispersants on polyol synthesis of V–ZrSiO4 nanopigment stable suspension for ink application / Hossein Heydari in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
PermalinkEffects of additives on the phase behavior of an EO/PO-copolymer / Janine Birnbach in SOFW JOURNAL, Vol. 147, N° 3 (03/2021)
PermalinkExacting & economical 2-K PU system based on polyester polyol / Sameer Kapole in PAINTINDIA, Vol. LVIII, N° 9 (09/2008)
PermalinkExploring the use of bio-derived, isosorbide-based polyols in the synthesis of high-performance polyurethanes / Jiae Kim in SURFACE COATINGS INTERNATIONAL, Vol. 105.4 (07-08/2022)
PermalinkExploring the use of bio-derived, isosorbide-based polyols in the synthesis of high-performance polyurethanes / Jiae Kim in SURFACE COATINGS INTERNATIONAL, Vol. 105.5 (09-10/2022)
PermalinkPermalinkPermalinkFlexible, hard, and tough biobased polyurethane thermosets from renewable materials : glycerol and 10-undecenoic acid / Varaprasad Somisetti in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 1 (01/2018)
PermalinkFonctionnalisation et polymérisation de produits issus du végétal par catalyse homogène / Fanny Bonnet in L'ACTUALITE CHIMIQUE, N° 427-428 (03-04/2018)
PermalinkFormulation techniques using FEVE resins in waterborne and high solids coatings / Robert J. Parker in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4617 (02/2016)
PermalinkFurther development of low-viscosity polyester polyols for high-solids 2K polyurethane coatings in COATINGS WORLD, Vol. 24, N° 3 (03/2019)
PermalinkPermalinkGreen light for quality / Heinz-Günther Schulte in EUROPEAN COATINGS JOURNAL (ECJ), N° 11/2009 (11/2009)
PermalinkGreen technology for the construction industry - two component waterborne polyurethane coatings / Prashant Gangwar in PAINTINDIA, Vol. LXI, N° 8 (08/2011)
PermalinkPermalinkGrowing acceptance in the field / Vijay M. Mannari in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2013)
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