Dépouillements

Wax attracts attention / Alain Bouvy in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 195, N° 4485 (02/2005)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 195, N° 4485 (02/2005) . - p. 22-26 Titre : Wax attracts attention Type de document : texte imprimé Auteurs : Alain Bouvy, Auteur Année de publication : 2005 Article en page(s) : p. 22-26 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bois -- Revêtements protecteurs Cires Formulation (Génie chimique) Imperméabilisation Résistance à l'abrasion Revêtements -- Additifs Revêtements -- Texture Surfactants Index. décimale : 667.9 Revêtements et enduits Résumé : Waxes are increasingly being used as surfactant conditioner additives as they are more economical, reliable and safer. Among the huge plethora of additives available today, waxes have a significant impact on many formulations or processes. They are cheaper, more reliable and less often associated with side effects even if used in relatively small quantities - typically below 3% solids content of the total composition. Waxes impart or improve effects as various as slip and lubrification, abrasion resistance, anti-blocking, mating, water repellency ..., all critical properties in the paint, coating and ink areas. As a result waxes are often classified as Surface Conditioner Additives. Note de contenu : - WAX DEFINITION AND TYPES - MECHANISMS OF WAX ACTION : The blooming mechanism - The ball bearing mechanism - TYPICAL EFFECTS WITH WAXES - ANTI-BLOCKING AGENT - SLIP AID ADDITIVE - ABRASION RESISTANCE ADDITIVE - WATER REPELLENCY - TEXTURISING ADDITIVE - FORMULATING WITH WAX EMULSIONS : The melting point - The particle size and the particle size distribution - PH - The type of surfactant - The order of component addition - RECENT DEVELOPMENT - NEW IDEAS IN R&D - TABLES : 1. Overview of the main waxes used in industrial applications - 2. Typical wax effects - 3. Advantages and disadvantages of surfactant type Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27654 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000287	-	Périodique	Bibliothèque principale	Documentaires	Disponible

New generation inks / Andre Fuchs in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 195, N° 4485 (02/2005)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 195, N° 4485 (02/2005) . - p. 29-34 Titre : New generation inks Type de document : texte imprimé Auteurs : Andre Fuchs, Auteur ; Thomas Bolle, Auteur ; Stephan Ilg, Auteur ; Rinaldo Husler, Auteur Année de publication : 2005 Article en page(s) : p. 29-34 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Encre Encre -- Séchage sous rayonnement ultraviolet Encre flexographique Encre jet d'encre Offset (imprimerie) Photoamorceurs (chimie) Réticulation (polymérisation) Vernis Index. décimale : 667.4 Encres Résumé : How the availability of new photoinitiators is resulting in the more efficient curings of inks ? Today, UV-curable systems are well established in numerous graphic art applications such as inks and overprint varnishes. In addition, promising new application areas, for instance UV inkjet, were developed in the recent years. The availability of efficient photoinitiators is essential for the progress of UV technology, since reactivity directly influences speed and stability if the production process. High photoinitiator reactivity is vital for a high conversion degree of the binder molecules at a very high cure rates ; this in turn directly influences the resistance properties and the migration behaviour of the cured inks and varnishes. Low volatility, low odour and migration are required to meet increasingly stringent legal restrictions, in particular for food packaging. Note de contenu : - EXPERIMENTAL : UV absorption spectra - Thermogravimetric measurements - Solubility - INKS AND OVERPRINT VARNISHES OPV : OPV - Offset ink - Flexo ink - Screen ink - Inkjet ink - PHOTOINITIATORS - RESULTS AND DISCUSSION : Overprint varnish (OVP) - Offset ink - Flexo ink - Screen ink - Inkjet ink - The future Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27655 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000287	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Sheen solutions / Philip Green in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 195, N° 4485 (02/2005)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 195, N° 4485 (02/2005) . - p. 39-41 Titre : Sheen solutions Type de document : texte imprimé Auteurs : Philip Green, Auteur Année de publication : 2005 Article en page(s) : p. 39-41 Langues : Anglais (eng) Catégories : Agents dispersants (chimie) Antimousse Charges (matériaux) Copolymère styrène acrylique Epaississants Ester vinylique de l'acide versatique Latex Polyacryliques Polyuréthanes Résistance à la salissure Résistance aux taches Revêtements -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : The author outlines ways in which companies can formulate cost-effective sheen and side sheen products with improved stain resistance and ease of stain removal properties. Ease of cleaning and stain removal are qualities that are high on the agenda when developing new premium quality decorative coatings. In many markets this attribute is juged by the scrub or wear (how easy or difficult it is to remove or how much film weight is lost after so many abrasion cycles) resistance of the coating (the standards vary from region to region but are normally set as so many % film weight loss after a set number of cycles). However in many markets (e.g. North America, some parts of the Asia Pacific region) this attribute is now being judged differently. It is now important whether or not the paint film is prone to staining (with readily available, common household stains) and whether such stains are easily removed by gentle cleaning. Note de contenu : - EVALUATION - DRYING TIME BEFORE STAINING - LATEX TYPE, LEVEL - LATEX TYPE INDIVIDUALLY : Polyurethane's (PU) - Pure acrylic (PA) - Va veova (VV) - Styrene acrylics (SA) - AS BLENDS : Pa/pu - Pa/vv - Latex level - Extender type - Dispersant type - Defoamer type, level - Thickener type - THE FUTURE Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27662 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000287	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Novel dispersants / Dave Haddleton in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 195, N° 4485 (02/2005)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 195, N° 4485 (02/2005) . - p. 42-44 Titre : Novel dispersants Type de document : texte imprimé Auteurs : Dave Haddleton, Auteur ; Andrew Steward, Auteur Année de publication : 2005 Article en page(s) : p. 42-44 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents dispersants (chimie) Agents dispersants (chimie) -- Synthèse Caoutchouc Copolymères séquencés Méthacrylates Monomères Polydiméthylsiloxane Le polydiméthylsiloxane —[O-Si(CH3)2]n—, ou poly(diméthylsiloxane) selon la nomenclature systématique, communément appelé PDMS ou diméthicone, est un polymère organominéral de la famille des siloxanes souvent présent dans les shampoings. On l'y ajoute pour augmenter le volume des cheveux mais il peut également aller boucher les pores du cuir chevelu et rendre les cheveux gras. C'est une des raisons pour lesquelles se laver les cheveux tous les jours est très déconseillé avec un shampooing contenant des silicones. Il existe également de l'amodiméthicone, qui est un dérivé du diméthicone. Le polydiméthylsiloxane est un additif alimentaire (E900), utilisé comme antimoussant dans les boissons (Coca-Cola BlāK). La chaîne de poly(diméthylsiloxane) forme également la structure de base des huiles et des caoutchoucs silicones. Polyéthylène glycol Polymérisation Polymérisation radicalaire par transfert d'atome Revêtements -- Additifs:Peinture -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : The authors explain why the drive to reduce VOC content of formulations and the need to increase loads while reducing resin levels is necessitating the development of improved dispersants. The combination of the constant drive to reduce volatile organic compound (VOC) content of formulations and the need to increase pigments loads while reducing resin levels in pigment concentrates, is necessitating the development of improved dispersants. A great deal of effort has centred on new polymeric dispersants with novel polymer architecture and composition of both the pigment anchoring groups and the stabilising moieties. Traditionally, free radical polymerisation (FRP) has been used to polymerise functional monomers which are required to make good pigment dispersants. FRP is robust with tolerance towards many impurities such as oxygen and heteroatoms. However, FRP has limitations arising from non-selectivity, i.e. little control over polymer topology or architecture and limited control over molecular weight. It has beenf ound that block copolymers are generally more efficient dispersants than their random copolymer analogues, therefore, new polymerisation techniques are being investigated to develop a new range of dispersants to meet the increasingly demanding requirements of modern pigment dispersants. Transition metal mediated living radical polymerisation (TMM-LR°) also known as atom transfer radical polymerisation (ATRP) allows a level of control un paralleled in polymer synthesis enabling the formation f well-defined polymer structures including block, grafs and hyperbranched copolymers as well as controlling alpha therminal functionality. Unlike many other living polymerisation techniques TMM-LRP is robust and tolerant to most impurities with the exception of acids. This makes the technology applicable to a wide range of monomers inlcuding, but no limited to, alkyl methacrylate, diethylaminoethylmethacrylate, PEG methacrylate, glycerol methacrylate, hydroxyethyl methacrylate, protected acid functional methacrylates and many styrenics. Note de contenu : - polymerisation technology - Dispersant synthesis Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27663 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000287	-	Périodique	Bibliothèque principale	Documentaires	Disponible