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Chlorinated-maleinized guayule rubber : a novel matting agent for powder coatings / William A. Purvis in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 68, N° 857 (06/1996)
[article]
Titre : Chlorinated-maleinized guayule rubber : a novel matting agent for powder coatings Type de document : texte imprimé Auteurs : William A. Purvis, Auteur ; Shelby F. Thames, Auteur Année de publication : 1996 Article en page(s) : p. 67-73 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agent mattant
Caoutchouc chloré
Réticulants
Revêtement poudre -- Additifs:Peinture poudre -- AdditifsTags : 'Peinture poudre' Adjuvant Caoutchouc Greffage Furane-2,5-dione(2,5-dihydro) Chloration Réticulant 'Agent matité' Index. décimale : 667.9 Revêtements et enduits Résumé : Grafting of maleic anhydride onto low molecular weight guayule rubber, followed by chlorination of the residual double bonds provides a powder reactive to alcohols, amines, and epoxides. The product, chlorinated-maleinized guayule rubber (CMGR), is a potential crosslinker/additive for powder coating formulations. Accordingly, polyester-hydroxyalkyl-amide and epoxy-polyester hybrid powder coating formulations were developed, applied, tested, and contrasted to properties of commercial powder coating formulations. The coatings featured reduced gloss, surface texturing, and physical property characteristics equal to or exceeding those derived from commercial powder coating formulations. Thus, CMGR is a promising reactive crosslinker for powder coatings. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of anhydride functional chlorinated rubber (CMGR) - Characterization of CMGR - Formulation and processing of CMGR modified powder coatings - Characterization of powder coatings
- RESULTS AND DISCUSSION : Physical properties of CMGR - CMGR powder coatings - CMGR modified PHAA powder coatings - CMGR modified EPE hybrids - Thermal stability and corrosion resistancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18337
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 857 (06/1996) . - p. 67-73[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003516 - Périodique Bibliothèque principale Documentaires Disponible 003527 - Périodique Bibliothèque principale Documentaires Exclu du prêt Factors influencing the suspending characteristics of wax coated silicas in paint and lacquer formulations / Derek Aldcroft in PAINTINDIA, Vol. XLV, N° 1 (05/1995)
[article]
Titre : Factors influencing the suspending characteristics of wax coated silicas in paint and lacquer formulations Type de document : texte imprimé Auteurs : Derek Aldcroft, Auteur ; Graham J. Earl, Auteur Année de publication : 1995 Article en page(s) : p. 19-28 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Peinture Vernis Adjuvant Silice 'Matériau revêtu' Cire Dispersion Sédimentation 'Agent matité' Index. décimale : 667.9 Revêtements et enduits Résumé : Wax coated silica matting agents are widely used in the coatings industry to reduce gloss and to enhance such film properties as scratch resistance, feel and flexibility. Further benefits arise when wax coated silicas are produced by co-milling the wax with the silica at temperature in a fluid energy mill. Incorporation of the wax in this manner improves the compatibility of the wax coated silica with other components of the lacquer formulation and influences the initial settling characteristics on the lacquer as well as preventing hard settlements on storage.
The paper reviews recent work within the Crossfield Group Research Laboratory in which the effect of co-milling various waxes with silica on such lacquer properties as initial dispersion, settling rates and redispersion characteristics, has been investigated and compared with the properties of the uncoated product.Note de contenu : - EXPERIMENTAL - Production of wax coated silicas - Analysis of wax coated silicas - Performance testing
- RESULTS AND DISCUSSION - Microniser operating temperature - Viscosity - Settlement - Redispersion - Matting performance of wax coated silicas - Dispersion characteristics - Mar resistancePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13588
in PAINTINDIA > Vol. XLV, N° 1 (05/1995) . - p. 19-28[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006451 - Périodique Bibliothèque principale Documentaires Disponible Photodegradation of water-based acrylic coatings containing silica / Alison M. Morrow in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 70, N° 880 (05/1998)
[article]
Titre : Photodegradation of water-based acrylic coatings containing silica Type de document : texte imprimé Auteurs : Alison M. Morrow, Auteur ; Norman S. Allen, Auteur ; Michele Edge, Auteur Année de publication : 1998 Article en page(s) : p. 65-72 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Peinture eau' 'Dégradation photochimique' Feuil 'Méthacrylate de méthyle copolymère' 'Acrylate butyle Adjuvant Silice 'Mécanisme réaction' Durabilité 'Etude expérimentale' 'Agent matité' Index. décimale : 667.9 Revêtements et enduits Résumé : The durability of acrylic copolymer systems containing silica as a matting agent are investigated, with particular emphasis on the photodegradation process. The effects of the photodegradation process on the films are monitored chemically via reflectance FTIR spectroscopy and UV spectrophotometry and monitored physically via gloss levels, optical properties, film thickness, and film smoothness measurements of the cured film. The findings of this study show that as a result of photo-oxidation high levels of hydroperoxides are observed. In addition the FTIR results, which are discussed from a mechanistic point of view, indicate that functional group formations and crosslinking reactions which occur as a consequence of photodegradation, play a primary role. Therefore, this study suggests that silica can reduce the durability of acrylic based formulations and that the extent of this photodegradation appears to be dependent on silica type. Note de contenu : - EXPERIMENTAL : Materials - UV irradiation - Hydroperoxide analysis - FTIR analysis - Cured film properties
- RESULTS AND DISCUSSION : Hydroperoxide analysis - FTIR analysis - Anhydride formation - Lactone formation - Acetophenone formation - Vinyl ketone formation - Vinyl formation - Crosslinking reactions - Cured film propertiesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17996
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 70, N° 880 (05/1998) . - p. 65-72[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003549 - Périodique Bibliothèque principale Documentaires Disponible