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Stain blockers / Maurille Secher in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4524 (05/2008)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4524 (05/2008) . - p. 18-28 Titre : Stain blockers Type de document : texte imprimé Auteurs : Maurille Secher, Auteur ; Alan Fream, Auteur Année de publication : 2008 Article en page(s) : p. 18-28 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Formulation (Génie chimique) Liants Résistance aux taches Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : This paper looks at innovations proposed by Eliokem to produce high quality, VOC compliant, waterborne stain-blocking paints and primers. Stain blocking properties are linked to the ability of the paint film to inhibit the migration of a wide range of coloured components of different chemical types. This work has demonstrated that paints formulated with the innovative EBS for interior are able to achieve very good stain blocking properties on anionic or cationic hydrophilic stains as well as on lipohilic stains. In addition, the unique film formation mechanism of EBS technology results in very good penetration power, and thus long lasting adhesion to porous substrates. The solvent of the emulsion has been selected to limit the migration of lipophilic stains and its quantity has been adjusted to lower the viscosity of particules without compromising compliance with the Decopaint VOC Directive. As the film formation of EBS for interior occurs by simple solvent evaporation, paints formulated with this binder are tension free and can consequently be used on low cohesion surfaces. The solvent is located inside the particules, resulting in secured film formation even in high relative humidity conditions. These properties fulfill the requirements for high performance stain blocking paints to be used for new construction as well as refurbishment and the new emulsion provides a technological advance because it overcomes the main weaknesses of waterborne technologies available today on the market. Note de contenu : - The nature of stains and stain migration mechanism - Solvent-based stain-blocking products, general propertiess - Waterborne strain-blocking products formulated with anionic binders - Waterborne strain blocking products formulated with cationic binders - Emulsified binding system (ebs): a new route for stain blocking - Paint formulation and evaluation vs anionic and cationic stain-blocking paints - Experimental : Stain blocking properties - Adhesion - Drying conditions/film formation - Application properties/wet-edge time - Results and discussion : Stain blocking properties - Adhesion - Drying conditions/film formation - Application properties/wet-edge time En ligne : https://drive.google.com/file/d/1m9fLK66CvIJletqFlzgXbnVkStwtwThD/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27206 [article]

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Perfect for pretreatment / Rich Moyle in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4524 (05/2008)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4524 (05/2008) . - p. 32 - 34 Titre : Perfect for pretreatment Type de document : texte imprimé Auteurs : Rich Moyle, Auteur ; Erik Ehinger, Auteur ; Mark Simpson, Auteur Année de publication : 2008 Article en page(s) : p. 32 - 34 Langues : Anglais (eng) Catégories : Additifs Anticorrosion Automobiles -- Revêtements:Automobiles -- Peinture Traîtements de surface Zirconium Index. décimale : 667.9 Revêtements et enduits Résumé : Industry is utilising a proprietary blend of additives and zirconium-based chemistry to deliver an environmental alternative pretreatment technology. Note de contenu : - Benefits of innovation - Performance - Delivering on goals En ligne : https://drive.google.com/file/d/1cXfyHFQrVFeDXu05iPHWfTToxALXCWa2/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27208 [article]

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Water-thinnable coatings / Ganesh Datt Bajpai in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4524 (05/2008)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4524 (05/2008) . - p. 35-37 Titre : Water-thinnable coatings Type de document : texte imprimé Auteurs : Ganesh Datt Bajpai, Auteur ; Raju Kumar, Auteur ; Pramod Kumar, Auteur Année de publication : 2008 Article en page(s) : p. 35-37 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique Automobiles -- Revêtements:Automobiles -- Peinture Essais (technologie) Pyrolyse La pyrolyse est la décomposition ou thermolyse d'un composé organique par la chaleur pour obtenir d'autres produits (gaz et matière) qu'il ne contenait pas. L'opération est réalisée en l'absence d'oxygène ou en atmosphère pauvre en oxygène pour éviter l'oxydation et la combustion (L’opération ne produit donc pas de flamme). Il s'agit du premier stade de transformation thermique après la déshydratation. Elle permet généralement d'obtenir un solide carboné, une huile et un gaz. Elle débute à un niveau de température relativement bas (à partir de 200 °C) et se poursuit jusqu'à 1 000 °C environ. Selon la température, la proportion des trois composés résultants est différente. Réticulation (polymérisation) Revêtements -- Propriétés chimiques:Peinture -- Propriétés chimiques Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques Thermogravimétrie Index. décimale : 667.9 Revêtements et enduits Résumé : Discussion water-thinnable thermosetting acrylic resins for self-curable automotive coatings. Important film properties can easily be manipulated by the use of acrylics in coating formulations, as they can result in a wide range of film properties due to the availability of a wide variety of monomers. The incorporation of different acrylic-type monomers, having diverse physical and/or chemical properties, in the same polymer molecule in varying proportions, leads to the formation of new materials as acryling copolymers with significant scientific and commercial importance. To obtain optimal film properties, high performance coatings need to undergo crosslinking, for improved film thoughness, solvent resistance and soil pick-up. The crosslinkable or thermosetting acrylics (TSAs) are increasingly used in a variety of surface coating applications. In coating formulations, TSAs are used in two principal forms, viz solventborne TSAs and waterborne TSAs. Nowadays, the use of waterborne TSA systems in surface coatings in gowing and expanding rapidly, due to stringent governmental regulations on environmental protection and energy conservation. In this study, a series of TSA resins were prepared by reacting 2-hydroxy ethylmethacrylate (HEMA) and acrylic acid (AA) as monomers in varying molar ratios in butanol (solvent)in presence of benzoyl peroxyde (initiator) at 60°C. The prepared TSA resins were made water-soluble by neutralising them with ammonia. The applied coating films were baked at 90°C for 30min for curing. Various optical, mechanical and chemical resistance properties of cured films were evaluated. Thermal curing and thermal degradation behaviour of water-thinniable TSA resins were also studied by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) respectively. Note de contenu : - EXPERIMENTAL : Matérials - Instrumental analysis - Preparation of cured films - RESULTS AND DISCUSSION : Molecular structure - H NMR-spectra - Thermal behaviour - Evaluation of film properties En ligne : https://drive.google.com/file/d/1YlLoyAF1ExIdq1AONZUfYQ5EketmJKXy/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27209 [article]

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Third generation additives / Janos Hajas in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4524 (05/2008)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4524 (05/2008) . - p. 39-41 Titre : Third generation additives Type de document : texte imprimé Auteurs : Janos Hajas, Auteur ; Klaus Schulte, Auteur Année de publication : 2008 Article en page(s) : p. 39-41 Langues : Anglais (eng) Catégories : Agent mattant Agents mouillants Dispersions et suspensions Polyaddition Revêtements -- Additifs:Peinture -- Additifs Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultraviolet Rhéologie Index. décimale : 667.9 Revêtements et enduits Résumé : Description a new third generation technology for improved matting and viscosity reduction in UV systems. A new wetting and dispersing additive, produced by controlled radicalpolymerisation, allows formulating flat UV coatings with very high level of matting agents, while maintaining low viscosities and improved matting results. The additive can also be used in most medium polarity solventborne applications and in universal, binder-free matting concentrates. Note de contenu : - Matting in UV cross-linkable systems : depends on many parameters - Wetting and dispersing additives - Wetting and dispersing additives VS gloss level in flat UV systems - FIGURES : 1. Wetting and dispersing additive generations - 2. Influence of the wetting and dispersing additive chemistry on matting efficiency of silica - 3. Influence of the wetting and dispersing additive chemistry on rheology of flat UV systems - 4. Gloss and rheology of flat UV with various matting agent - 5. Improved matting efficiency of silica matting agents by using a W&D additive - 6. Binder-free matting paste with W&D additives of the second and third generation En ligne : https://drive.google.com/file/d/1P105qF3VjRiV8uKZnnR_ZSQpD_HsPprC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27210 [article]

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Silicon overview / Tim Pajk in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4524 (05/2008)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4524 (05/2008) . - p. 42-43 Titre : Silicon overview Type de document : texte imprimé Auteurs : Tim Pajk, Auteur Année de publication : 2008 Article en page(s) : p. 42-43 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Fluorine Revêtements -- Additifs:Peinture -- Additifs Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Index. décimale : 667.9 Revêtements et enduits Résumé : Description the silicon-based technologies (SBTs) that advance the coatings industry and empower formulators to offer new functionality in various applications. In the past ten years, the number of new patents related to silicon-based materials for paints and coatings has increased exponentially, specifically those related to solving the problems traditionally addressed by SBTs, such as foam control, wetting and adhesion promotion. Dow Corning led many of these efforts and produces products for use in a wide range of coatings applications, including primers, heat-resistant coatings, industrial maintenance coatings, hygienic coatings, marine coatings, biocidal coatings, anti-fouling coatings, abrasion-resistant coatings, automotive clear coats and architectural coatings. Used as the primary component in a formulation or as an additive, these products impart enhanced performance attributes in high-performance applications. SBTs provide characteristics and performance attributes not foud in traditional organic coatings. Formulators use SBTs to differentiate their products and offer functionality for specific market needs. These include the need for low-VOC formulations; greater resistance to water, oil and stains; enhanced weatherability; increased thermal resistance; and superior texturing. SBTs are also non-toxic and provide utility at very low-use levels. Finally, many silicon materials combine easily with organic monomers and polymers, allowing formulators to develop specialised blends with the functionality of both organic and non-organic materials. Note de contenu : - Product chemistries for coatings applications - Fluorine technology - FIGURES : 1. Silane monomer - 2. Polydimethylsiloxane - 3. Polyorganosiloxane - 4. Silicone polyethers - 5. Structures can be a combination of the above, where R can be methyl and/or phenyl - 6. Siliconates - 7. Functionality of fluorosilicones - TABLE : Attributes of silicone and fluorine incorporated into fluorosilicone technology En ligne : https://drive.google.com/file/d/1TGkNW6tX_KxZonqFPSE2shtCCTQp-39B/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27211 [article]

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Pliable packaging / Jamie Rutherford in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4524 (05/2008)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4524 (05/2008) . - p. 46-47 Titre : Pliable packaging Type de document : texte imprimé Auteurs : Jamie Rutherford, Auteur Année de publication : 2008 Article en page(s) : p. 46-47 Langues : Anglais (eng) Catégories : Emballages en matières plastiques Encre d'imprimerie Impression sur matières plastiques Vernis Index. décimale : 667.9 Revêtements et enduits Résumé : The thechnology for printing in packaging has become increasingly demanding for ink formulators - not only in terms of performance but in the environmental credentials of the formulations themselves. But the art of innovation in inks has a long pedigree. Printing inks have been in use for at least 3500 years, with early inks from China and Egypts, for example, using gums and glues as vehicles and lampblack as the colourant. Then, from the 1500s and onwards, vegetable oils such as linseed oil were introduced as the ink vehicle. Subsequent technological developments introduced synthetic resins, such as polyamides and polyurethanes, as well as nitrocellulose and polyvinyl butyraldehyde, for enhanced performance characteristics; and, more recently; resins have been developed - and are expected to continue to be developed - with a view to increased sustainability through the use of natural, renewable resources. Note de contenu : - Challenges - Innovation - Reach regulations - Opportunities En ligne : https://drive.google.com/file/d/1pPu2c4gX-WyZX9LMwyEIo_mNqZmH_10b/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27212 [article]

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