Titre : |
Etudes des propriétés dispersantes des produits de condensation des acides naphtalène sulfoniques |
Type de document : |
texte imprimé |
Auteurs : |
Hamid Aleboyeh, Auteur ; Serge Walter, Auteur ; Néji Ladhari, Auteur ; Azam Aleboyeh, Auteur |
Année de publication : |
1999 |
Article en page(s) : |
p. 10-15 |
Note générale : |
Bibliogr. |
Langues : |
Français (fre) |
Catégories : |
Adsorption Agents dispersants (chimie) Colorants Produits de condensation (chimie) Sulfoniques, Acides
|
Index. décimale : |
547 Chimie organique : classer la biochimie à 574.192 |
Résumé : |
This work deals with the use of the dinaphtylmethanedisulfonic acid sodium salt as a dispersing agent for dyestuffs. Is it produced naphtalène sulfonation in oleum, followed by condensation with formaldehyde and subsequent neutralization by caustic soda. The properties of the obtained products are discussed as dependent on processing conditions. The origins of the main parameters ruling the dispersant effect, dispersion stability and dying power on polyester material are examined.
The results show that the presence of remaining naphtalene does no modify significantly the adsorption speed on dyestuff particles. The samples made of naphtalene-2 sulfonic acid show excellent dispersant properties. Naphatalene-1 sulfonic acid derivatives show higher adsorption rates. The simultaneous presence of both acids thus leads to good properties of the final product. With high molecular weight, high condensation degrees result in very good absorbtion behaviour of the dyestuff in textile fibers. |
En ligne : |
https://new.societechimiquedefrance.fr/numero/etudes-des-proprietes-dispersantes [...] |
Format de la ressource électronique : |
Pdf |
Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7562 |
in L'ACTUALITE CHIMIQUE > N° 6 (06/1999) . - p. 10-15