9 résultat(s) recherche sur le tag 'cationique''

Cationic UV flexo : an alternative technology / David Atkinson in PAINTINDIA, Vol. XLV, N° 12 (12/1995)

[article]  inPAINTINDIA > Vol. XLV, N° 12 (12/1995) . - p. 71-73 Titre : Cationic UV flexo : an alternative technology Type de document : texte imprimé Auteurs : David Atkinson, Auteur Année de publication : 1995 Article en page(s) : p. 71-73 Langues : Anglais (eng) Tags : Encre  Flexographie  Durcissement  'Rayonnement  UV'  'Polymérisation  cationique'  Adhérence  'Propriété  rhéologique'  Viscosité  Odeur Index. décimale : 667.9 Revêtements et enduits Résumé : With the drive to environmentally friendly ink systems, printers are looking at the alternatives to solvent-based systems. Although water-based and free radical radiation curing systems are the best known alternatives, a third technology-cationic UV curing - is being explored by the UK's ink research association, Pira. The results to date are very promising, reports David Atkinson, in an article in the July 1995 issue of Polymers Paint Colour Journal. Note de contenu : - Water based systems - Radiation cured systems - Reduced downtime - Cationic UV ink systems - Excellent adhesion - Low viscosity - Lamination properties - Low odour Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13693 [article]

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Development of a novel oxidative hair color based on a system with an optimized ratio of higher alcohol to cationic surfactant / Takahiro Yamashita in IFSCC MAGAZINE, Vol. 8, N° 3 (07-08-09/2005)

[article]  inIFSCC MAGAZINE > Vol. 8, N° 3 (07-08-09/2005) . - p.163-169 Titre : Development of a novel oxidative hair color based on a system with an optimized ratio of higher alcohol to cationic surfactant Type de document : texte imprimé Auteurs : Takahiro Yamashita, Auteur ; Masatoshi Ochiai, Auteur ; Kazuya Shibata, Auteur ; Masaaki Yasuda, Auteur ; Akira Noda, Auteur Année de publication : 2005 Article en page(s) : p.163-169 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de blanchiment Cheveux -- Teinture Surfactants Tags : 'Couleur  oxydante  des  cheveux'  'Agent  de  blanchiment'  'Rapport  molaire'  'Surfactant  cationique' Index. décimale : 668.5 Parfums et cosmétiques Résumé : Oxidative hair color, the most commonly used for coloring hair, is characterized by its bleaching effect. This effect enables dark hair to be dyed in various bright colors. In order to enhance this bleaching effect, the concentration of either the alkalizing or oxidizing agent in the hair color base is generally increased. However, this method causes chemical damage to the hair. With the aim of finding methods to obtain an improved bleaching effect without increasing the amount of bleaching ingredients, the authors investigated the permeation mechanism. Cationic bases showed the highest bleaching effect and allowed greater penetration, permitting bleaching ingredients to enter the cortex of the hair more easily and diffuse more quickly. In addition, the molar ratios of higher alcohol (A) to cationic surfactant (C) as a function of the bleaching effect were also evaluated. The results showed an optimum range for this A/C ratio. The smoothness of the hair was also evaluated, revealing an optimum range for the A/C ratio. Based on these findings, a product with an A/C ratio that maximizes the bleaching effect and the smoothness of the hair was successfully developed. Comparison of this newly developed product with a conventional product verified that the new product has a greater bleaching effect and gives a beautiful depth of color while maintaining the silky smoothness of the texture of the hair. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10489 [article]

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High-performance UV-cured composite and nanocomposite materials / Khalid Zahouily in JEC COMPOSITES MAGAZINE, N° 32 (05/2007)

[article]  inJEC COMPOSITES MAGAZINE > N° 32 (05/2007) . - p. 75-79 Titre : High-performance UV-cured composite and nanocomposite materials Type de document : texte imprimé Auteurs : Khalid Zahouily, Auteur ; C. Decker, Auteur Année de publication : 2007 Article en page(s) : p. 75-79 Langues : Anglais (eng) Tags : 'Fibre  minérale'  'Etude  expérimentale'  'Propriété  mécanique'  rhéologique'  'Relation  mise  en  oeuvre  propriété'  Cinétique  'Polymérisation  masse'  ouverture  cycle'  cationique'  'Composé  polyfonctionnel'  photochimique'  Préparation  'Matériau  renforcé  dispersion'  fibre'  'Polymère  réticulé'  Polyacrylate  Argile  verre'  'Glycidyle  éther  polymère'  Nanocomposite  composite' Index. décimale : 668.4 Plastiques, vinyles Résumé : Composite materials made of either epoxy resin reinforced with glass fibre or clay/ acrylate resin have been produced rapidly at ambient temperature by simple exposure to UV radiation. This UV-curing technology clearly outperforms traditional thermal processing with respect to output, cost, product quality and environmental impact. Note de contenu : - UV-radiation curing technology - Different types of UV-curable resins - Photoinitiated radical polymerization - Photoinitiated cationic polymerisation - Kinetic study of photoinitiated polymerisation reactions by real-time infrared spectroscopy - Features and advantages of on-line UV manufacturing - Outstanding characteristics - Nanocomposite materials Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14200 [article]

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Photoinitiators and photosensitizers of polymerization : A short review / Jean-Pierre Fouassier in EUROPEAN COATINGS JOURNAL (ECJ), N° 6/96 (06/1996)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 6/96 (06/1996) . - p. 412-419 Titre : Photoinitiators and photosensitizers of polymerization : A short review Type de document : texte imprimé Auteurs : Jean-Pierre Fouassier, Auteur Année de publication : 1996 Article en page(s) : p. 412-419 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Amorceur  radicalaire'  cationique'  anionique'  'Relation  structure  activité'  'Activité  amorceur'  'Polymérisation  photochimique'  Photoamorceur Index. décimale : 667.9 Revêtements et enduits Résumé : The UV curing of coatings offers various economic advantages over orthodox technologies. It is the photoinitiator that has been found to represent a key factor in the efficiency of this type of reaction. The following article provides an overview of different chemistries and an approach to the photochemical reactivity of these molecules. Note de contenu : - The basic photo-chemical process in light-induced reaction - The radical photopolymerization reactions - Main classes of radical photoinitiators sensitive in the UV wavelenght range : 1) Basic photoinitiators - 2) Photoinitiators exhibing particular properties - 3) Synergistic effects - 4) Visible photoinitiators - Cationic photoinitiators - Anionic photoinitiators - Charge transfer initiation - Laser induced polymerization - Structure/reactivity relationships Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11296 [article]

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Preparations of novel flocculants and its applications in the paper-making wastewater / F. Zhao in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 4/2011 (07-08/2011)

[article]  inTENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 4/2011 (07-08/2011) . - p. 318-322 Titre : Preparations of novel flocculants and its applications in the paper-making wastewater Type de document : texte imprimé Auteurs : F. Zhao, Auteur ; J. L. He, Auteur Année de publication : 2011 Article en page(s) : p. 318-322 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Surfactants Tags : 'Polacrylamide  cationique'  'Monomère  fonctionnel'  Flocculant  'Eaux  usée  fabrication  papier' Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : Functional monomer [N-(2,4,4-trimethylpentan-2-yl)acrylamide] was synthesized and characterized by MS and NMR. A series of high molecular weight cationic polyacrylamides were prepared with N-(2,4,4-trimethylpentan-2-yl)acrylamide, acrylamide and methacryloxyethyltrimethyl ammonium chloride by copolymerization using complex initiation systems as catalysts in aqueous solution. Then they used as flocculants to treat the paper-making wastewater. The removal of the colour and the chemical oxygen demand (COD) in the treated waste water samples were determined. Results showed that flocculants could efficiently remove the color and the COD. The overall color and COD removal efficiencies reached as high as 80% and 85%, respectively. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11952 [article]

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Quaternary ammonium surfactant stability and conditioning affects on high pH relaxers / Monna Manning in IFSCC MAGAZINE, Vol. 2, N° 1 (01-02-03/1999)

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Synthesis and surface properties of novel gemini surfactants / Zhang Zhang in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 49, N° 5 (09-10/2012)

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Synthesis, characterization and surface activity of trioctyl hydroxyethyl ammonium chloride / Y.-L. Li in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 4/2011 (07-08/2011)

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Synthesis of nanocrystal TiO2 and study of photocatalytic degradation property / X.-M. Tai in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 46, N° 5/2009 (09-10/2009)

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