Accueil
POLYMERS PAINT COLOUR JOURNAL - PPCJ . Vol. 196, N° 4503Water dispersionsMention de date : 08/2006 Paru le : 08/09/2006 |
Dépouillements
Ajouter le résultat dans votre panierPolyurethane dispersions / I. K. Martin in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4503 (08/2006)
[article]
Titre : Polyurethane dispersions Type de document : texte imprimé Auteurs : I. K. Martin, Auteur Année de publication : 2006 Article en page(s) : p. 24-28 Langues : Anglais (eng) Catégories : Essais (technologie)
N-méthyl-2-pyrrolidoneLe N-méthyl-2-pyrrolidone ou 1-méthyl-2-pyrrolidone, généralement abrégé en NMP, est un liquide incolore ou jaune clair. C'est un amide cyclique (lactame) souvent utilisé en tant que solvant organique.C'est un solvant hygroscopique, miscible avec l'eau et la plupart des solvants organiques. C'est une base faible: une solution aqueuse contenant 10% de NMP a un pH de 7,7-86.
Utilisation : Ce composé est principalement utilisé comme solvant à cause de ses propriétés physiques: faible volatilité, stabilité thermique, solvant polaire et aprotique. Ses propriétés toxicologiques en font un bon candidat pour le remplacement de solvants chlorés.
Les domaine d'utilisation sont vastes : en pétrochimie, il sert de solvant d'extraction pour les composés aromatiques et le butadiène ou de purification des gaz (récupération du dioxyde de carbone et du sulfure d'hydrogène); en électronique, il sert de solvant de nettoyage pour les wafers de silicium; en chimie, il est utilisé comme solvant de réaction ou de formulation ; comme agent de nettoyage dans l'industrie des métaux (dégraissage).
Polymères -- Synthèse
Polymères en émulsion
Polyuréthanes
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
Solvants -- Suppression ou remplacementIndex. décimale : 667.9 Revêtements et enduits Résumé : This article is about the use of polyurethanes in the coatings industry.
Increasing environmental and legislative pressure over the years, has led to a gradual shift from solvent-based polyurethanes towards waterborne polyurethane dispersions (PUDs). Although significantly more environmentally friendly, most waterborne PUDs still require the use of some solvent for processing and coalescing purposes. For many years the solvent of choice has been n-methyl pyrrolidone (NMP), however, this solvent is now under threat due to impending legislation within EU, which requires it to be re-classified as a developmental Toxicant (R61, risk during pregnancy of harmful effects for the child) at levels > 5%. This re-classification is expected to have a significant impact on PUD technology and in turn the coatings industry. To combat this future legislation, Industrial Copolymer Ltd has developed a series of NMP-free PUDs to aid the coatings industry in their quest for safer and sustainable future.Note de contenu : - THE USE OF NMP IN PUD MANUFACTURE
- PROPERTIES OF SOFT GRADE PUDS
- HARD GRADE PUDS
- EXPERIMENTAL : Chemical & strain test method - One hour spot test
- Scheme 1. : The synthesis of waterborne polyurethane dispersions
- Tables : 1. Solvent-free soft grades - 2. NMP-free hard grades
- Figures : 1. Rapid recovery of tensile performance after immersion in water - 2. Improved chemical resistance displayed by PUD HBPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27482
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 196, N° 4503 (08/2006) . - p. 24-28[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 005346 - Périodique Bibliothèque principale Documentaires Disponible Size matters / Greg Saunders in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4503 (08/2006)
[article]
Titre : Size matters Type de document : texte imprimé Auteurs : Greg Saunders, Auteur Année de publication : 2006 Article en page(s) : p. 30-31 Langues : Anglais (eng) Catégories : Chromatographie sur gel
Oligomères
Poids moléculaires
Polymères -- AnalyseIndex. décimale : 667.9 Revêtements et enduits Résumé : This is an analysis of resin materials of increasing molecular weight.
Resins are important polymeric materials that have a wide range of uses. The suitability of a particular material for an application is controlled by a number of factors including the molecular weight distribution, a key property that affects many other physical parameters. Correspondingly, the analysis of resins by size exclusion chromatograhy is a vital component in both manufacturing and quality assurance processes. Using the PlusPore column range. SEC of the whole spectrum of resin materials is possible from low molecular weight oligomeric products up to high molecular weight engineering materials.Note de contenu : - SEC of resins
- Oligomeric resins
- Low-molecular weight resin - pre-polymers
- Intermediate molecular weight resin - engineering materials
- High molecular weight resin - engineering materialsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27483
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 196, N° 4503 (08/2006) . - p. 30-31[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 005346 - Périodique Bibliothèque principale Documentaires Disponible Antimicrobial coatings / Michael Wagener in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4503 (08/2006)
[article]
Titre : Antimicrobial coatings Type de document : texte imprimé Auteurs : Michael Wagener, Auteur Année de publication : 2006 Article en page(s) : p. 34-37 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens
Etude in vitro
Nanoparticules
PolyamidesUn polyamide est un polymère contenant des fonctions amides -C(=O)-NH- résultant d'une réaction de polycondensation entre les fonctions acide carboxylique et amine.
Selon la composition de leur chaîne squelettique, les polyamides sont classés en aliphatiques, semi-aromatiques et aromatiques. Selon le type d'unités répétitives, les polyamides peuvent être des homopolymères ou des copolymères.
Polyuréthanes
Tests d'efficacitéIndex. décimale : 667.9 Revêtements et enduits Résumé : Nanocomposite coatings can reduce infection within a medical environment.
Coatings which are able to reduce the risk of biofilm formation on material surfaces are relevant for medical devices in order to reduce infections but also important for other technical and consumer applications. Either by binding biocides in the surface or by incorporating such substances into the coating, the proliferation of bacteria and fungi in the material can be reduce significantly.
Silver is especially suited as an antimicrobial substance due to its high antimicrobial efficacy accompanied with a low or non-existent cytotoxicity.
In the first part of this paper the use of nanoparticulate metallic silver particles as an antimicrobial agent in polyurethane coatings is presented. In the second part a new coating system, which combines highly efficient nanoparticulate silver particles with the versatile plasmapolymer coating technology is discussed. In-vitro tests show an excellent antimicrobial effect of the silver particles against a variety of clinical relevant bacteria (including multiresistant strains of MRSA and MRSE).
Additionally the surface energy of the plama polymer can be varied in order to change the adhesion properties of bacteria.Note de contenu : - Antimicrobial polyurethane coating with highly porous metallic silver particles
- Plasma polymer coatings with silver nano particles on medical devices
- Testing of antimicrobial efficacy (in-vitro) - the Bio-Gate assayPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27491
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 196, N° 4503 (08/2006) . - p. 34-37[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 005346 - Périodique Bibliothèque principale Documentaires Disponible Interactive coatings / Andrea Glawe in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4503 (08/2006)
[article]
Titre : Interactive coatings Type de document : texte imprimé Auteurs : Andrea Glawe, Auteur Année de publication : 2006 Article en page(s) : p. 38-40 Langues : Anglais (eng) Catégories : Enduction textile
Revêtements hygiéniques
Textiles et tissus à usages médicaux
Textiles et tissus à usages techniquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Different finishing methods and producing medical textiles represent an increasing market.
New trends in research and development of coating technologies and also coating products under the banner of medical textiles and advanced technologies for new innovative products are growing.
Coating is a complex process. The coating process itself is not the only influence on the properties of the end product. The textile material, textile process (weaving, knitting, non-woven), coating paste, production process (coating, laminating) and the coating methods also have a great influence on the properties of the end products like tensile strength, elongation but also the health and environmental aspects.Note de contenu : - Coating products for medical applications
- Current and new coating systems
- FIGURES : 1. Main components of a coating line - 2. Samples of application - 3. Kiss coater for thin layers - 4. Slot die application systems - 5. Double sided coating head - horizontal - 6. Coating method for hot melt applicationPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27492
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 196, N° 4503 (08/2006) . - p. 38-40[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 005346 - Périodique Bibliothèque principale Documentaires Disponible Silver ion technology / Natalie Platt in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4503 (08/2006)
[article]
Titre : Silver ion technology Type de document : texte imprimé Auteurs : Natalie Platt, Auteur Année de publication : 2006 Article en page(s) : p. 42-43 Langues : Anglais (eng) Catégories : Antimicrobiens
Argent
Ions métalliques
Revêtements hygiéniquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Silver is playing a major role in the combatting of bacteria in coatings.
Silver has been used in fighting infection for centuries. The ancient Greeks stored water in silver vessels and there is documentary evidence of the use of silver for medicinal purposes dating back to 750 AD.
In the 1880s silver was used for the prevention of eye infections in new born babies and in the 1900s doctors applied a thin layer of silver to large wounds to prevent infection and promote healing. It also found use as an internal antiseptic.
With the invention of penicillin in the early 1920s and the development of other classes of antibiotics, the use of silver as an antimicrobial agent declined. The growing incidence of multi-drug resistant bacteria however renewed the interest in silver.
When released into aqueous fluids, silver provides an antimicrobial action. The positively charged ionic form is highly toxic for micro organisms at minute concentrations.Note de contenu : - Low toxicity
- Silver - the deterrent
- Medical matters
- Longevity
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27493
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 196, N° 4503 (08/2006) . - p. 42-43[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 005346 - Périodique Bibliothèque principale Documentaires Disponible Challenges for UV curing / Sebastien Villeneuve in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4503 (08/2006)
[article]
Titre : Challenges for UV curing Type de document : texte imprimé Auteurs : Sebastien Villeneuve, Auteur Année de publication : 2006 Article en page(s) : p. 44-47 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Emballages
Encre -- Séchage sous rayonnement ultraviolet
Encre en phase solvant
Encre flexographique
Souplesse (mécanique)Index. décimale : 667.4 Encres Résumé : The authors ask whether UV curing inks exhibit enough technical and economical advantages flexible packaging applications.
UV curing inks and coatings still face certain challenges before they can gain major positions in the flexible packaging market from the currently dominating solventborne and - to a lesser extent - waterborne formulations.
Can food compliance requirements be met ? Can the cost/performance gap versus solvent-borne systems be reduced ? Can the stringent technical demands (adhesion, lamination ability, retorting and sealing resistance, etc.) of the various packaging applications be bulfilled ? These are the parameters that will determine the ability of UV-curing inks and coatings to significantly extend their fields of application in flexible packaging.
Technology developments that support the formulation and use of a new generation of UV-curable inks and coatings are described below.Note de contenu : - LPIs in Europe and trends
- Stumbling blocks
- Adopting UV curing
- Correcting deficiencies
- Adhesion to synthetic substrates
- Curing and other performance-related factors
- Curing conditions
- The oxygen enemy
- New perspectives for photoinitiatorsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27494
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 196, N° 4503 (08/2006) . - p. 44-47[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 005346 - Périodique Bibliothèque principale Documentaires Disponible
Exemplaires (1)
Code-barres | Cote | Support | Localisation | Section | Disponibilité |
---|---|---|---|---|---|
005346 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |