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Auteur David Vanaken |
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High solids acrylic and polyester polyols made easy / Carl Cavallin in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4616 (01/2016)
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Titre : High solids acrylic and polyester polyols made easy Type de document : texte imprimé Auteurs : Carl Cavallin, Auteur ; Zegui Yan, Auteur ; David Vanaken, Auteur ; Denis Heymans, Auteur Année de publication : 2016 Article en page(s) : p. 61-64 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Haut extrait sec
Néodécanoate de glycidyle
Polyacryliques
Polyesters
Polyols
Revêtements protecteurs
Rhéologie
Vernis
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : The authors, describe simple ways to produce low viscosity, high solids acrylic and polyester polyols based on glycidyl neodecanoate. Note de contenu : - Acrylic polyol resins
- Polyester polyol resins
- Acrylic polyol/star polyester polyol blends
- Acrylic polyol and polyester polyol-hybrids
- Clearcoat performanceEn ligne : https://drive.google.com/file/d/1-u2rFer8MQvlB1lsKN9a2aEKMtxA5zvd/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25307
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4616 (01/2016) . - p. 61-64[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17785 - Périodique Bibliothèque principale Documentaires Disponible Inventive routes for the preparation of waterborne acrylic polyols for 2K PU protective topcoats / David Vanaken in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 212, N° 4676 (08/2022)
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Titre : Inventive routes for the preparation of waterborne acrylic polyols for 2K PU protective topcoats Type de document : texte imprimé Auteurs : David Vanaken, Auteur ; Denis Heymans, Auteur ; Félix Feng, Auteur ; Nathalie Havaux, Auteur Année de publication : 2022 Article en page(s) : p. 19-22 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dispersions et suspensions
Néodécanoate de glycidyle
Polyacryliques
Polyols
Polyuréthanes
Revêtements -- Finition
Revêtements bi-composant
Revêtements en phase aqueuse
Revêtements organiques
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : The authors summarises all of the recent data published on producing waterborne acrylic polyols for 2K PU topcoats.
New regulations, increased awareness and the importance of environmental stewardship lead to a strongly increased demand for waterborne (WB) protective topcoats. However, matching the performance of solventborne (SB) two-component (2K) polyurethanes remains a challenge for resin and paint producers. Synthesis and formulation of primary or secondary dispersions are not straightforward.
For secondary dispersions, the removal of solvents from polyols prior to dispersion in water is technically challenging. The emulsion polymerisation process producing primary dispersions often poses problems of water-phase homopolymerisation of the hydroxyl monomers resulting in poor stability of the emulsions, high process grit and insufficient crosslinking of the final coatings.
Waterborne acrylic polyols (APO) for 2K urethane finishes have played an important role in enabling regulatory compliance in the industrial market, yet their synthesis can be difficult. This paper introduces two methods to produce high-performance solvent-free waterborne acrylic polyols using either glycidyl neodecanoate or its acrylated adduct. The performance characteristics of coatings made with these waterborne polyols are also demonstrated.Note de contenu : - Waterborne technologies
- Waterborne APO secondary dispersions
- Performance of waterborne acrylic polyols based on glycidyl neodecanoate
- Waterborne APO secondary dispersions conclusion
- Waterborne hydroxy-functional emulsions
- Primary vs. secondary dispersions
- Novel OH-functional emulsions for high-performance WB 2K PU coatings
- Waterborne hydroxy-functional emulsion conclusionsEn ligne : https://drive.google.com/file/d/1Koo1HDSSIlt1dDIXxIGDfBT_lXVQJr7D/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37868
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 212, N° 4676 (08/2022) . - p. 19-22[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23537 - Périodique Bibliothèque principale Documentaires Disponible Necessity is the mother of invention / David Vanaken in EUROPEAN COATINGS JOURNAL (ECJ), N° 2 (02/2022)
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Titre : Necessity is the mother of invention Type de document : texte imprimé Auteurs : David Vanaken, Auteur ; Denis Heymans, Auteur ; Félix Feng, Auteur ; Nathalie Havaux, Auteur Année de publication : 2022 Article en page(s) : p. 28-33 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Néodécanoate de glycidyle
Polyacryliques
Polymères en émulsion
PolyolsIndex. décimale : 667.9 Revêtements et enduits Résumé : Resin and paint producers are under increasing pressure to find environmentally friendly alternatives to conventional solvent-borne polyurethane for protective topcoats. We have developed easy process to produce high-performance solvent-free water-borne acrylic polyols via primary or secondary dispersion using glycidyl neodecanoate or its acrylated adduct. Note de contenu : - Versatile monomers may resolve synthesis issues
- Water-borne apo secondary dispersions
- Glycidyl neodecanoate reactive solvent reduces VOC
- Performance of water-borne acrylic polyols based on glycidyl neodecanoate
- Adjustable polyol composition and properties
- Water-borne OH-functional emulsions for different applications
- Enhanced crosslinking improves cured film properties
- Process and performance benefits
- Fig. 1 : Glycidyl neodecanoate structure
- Fig. 2 : Glycidyl neodecanoate as a reactive solvent in the initial reactor charge
- Fig. 3 : Preparation of glycidyl ester-based acrylic polyol, glycidyl ester incorporation in polymer backbone
- Fig. 4 : : Comparison of a solvent-free acrylic polyol dispersion based on glycidyl neodecanoate and a conventional polyol dispersion containing solvent
- Fig. 5 : Acrylated glycidyl neodecanoate
- Fig. 6 : Comparison of synthesis and structure of WB APO secondary dispersions and WB APO emulsions
- Fig. 7 : Reduced grit formation with ADN
- Fig. 8 : Comparison of cured film properties with and without AGN as comonomer (emulsion with il % OH on solids)En ligne : https://drive.google.com/file/d/10d7fG_wqohnasK_gzeAbi9p_XFHV9fUQ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37005
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 2 (02/2022) . - p. 28-33[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23223 - Périodique Bibliothèque principale Documentaires Disponible Novel path to hydroxyl-functional emulsions for high-performance waterborne two-component polyurethane coatings / Steven Mao in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 211, N° 4670 (08/2021)
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Titre : Novel path to hydroxyl-functional emulsions for high-performance waterborne two-component polyurethane coatings Type de document : texte imprimé Auteurs : Steven Mao, Auteur ; David Vanaken, Auteur ; Wang Scott, Auteur ; Marcelo Herszenhaut, Auteur Année de publication : 2021 Article en page(s) : p. 41-44 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Groupe hydroxyle
Matériaux hautes performances
Polyuréthanes
Revêtements bi-composant
Revêtements en phase aqueuse
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : The global demand for waterborne (WB) industrial coatings continues to increase to meet more and more stringent VOC legislation and heightened awareness of environmental stewardship. Because of their lower environmental footprint, waterborne epoxy resins, acrylic polyol (APO) dispersions, and hydroxyl-functional (OH-functional) emulsions are gaining market share in high-performance two-component (2K) industrial coating applications. While waterborne epoxy resins are cured with a variety of amines, APOs and OH-functional emulsions are crosslinked with diverse WB isocyanates. Compared to APO dispersions, OH-functional acrylic emulsions offer lower cost and an easier production route, in addition to faster drying and property development. OH-functional acrylic emulsions can be designed with a wide range of hydroxyl values and performance characteristics to address the needs of many different applications in plastic, wood, automotive, and construction coatings. Note de contenu : -NEES AND TRENDS IN THE COATINGS INDUSTRY : Sustainability & lower VOC requirements, which lead to - Excellent performance - Globalisation of technologies - Controlled costs
- TAKING ADVATAGE OF A HIGHLY VERSATILE FAMILY OF BUILDING BLOCKS
- BUILDING WB 2K PU SYSTEMS
- PRIMARY VS. SECONDARY DISPERSION : Process - Chemistry
- NOVEL OH-FUNCTIONAL EMULSIONS FOR HIGH-PERFORMANCE WB 2K PU COATINGS
- Fig. 1 : Koch reaction to produce neo-acids
- Fig. 2 : Structure of CE1OP glycidyl ester and its adduct with acrylic acid
- Fig. 3 :
- Fig. 4 : Relative ranges of acid values for various WB APO technologies
- Fig. 5 : Synthesis of conventional WB APOs
- Fig. 6 : APO dispersions and APO emulsions - differences in synthesis and structure
- Fig. 7 : Increased monomer pre¬emulsion stability with ACE
- Fig. 8 : Reduced grit formation with ACE pre-emulsion stability with ACE
- Fig. 9 : Improved crosslink density and functional group distribution when ACE is used
- Fig. 10 : Comparison of cured film properties with and without ACE as comonomer (emulsion with 4% OH content)En ligne : https://drive.google.com/file/d/112kRfe-YrZXWW57T0ioxjKN1LuT6zKEk/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36134
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 211, N° 4670 (08/2021) . - p. 41-44[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22872 - Périodique Bibliothèque principale Documentaires Disponible