Naslov
DP Finishing with Polycarboxylic Acids and Phosphono-Based Catalysts

Autori
Bischof-Vukušić, Sandra ; Katović, Drago ; Soljačić, Ivo

Izvornik
AATCC Review (1532-8813) 2 (2002), 10; 14-16

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
DP finishing; PCA; phosphono-based catalysts

Sažetak
Polycarboxylic acid are gaining recognition as a new class of ecologicaly accepted formaldehyde free Durable Press (DP) agents. Since most of these reagents are much more expensive than N-methylol agents, which are still mostly used nowadays, they should impart extra end-use properties to justify high cost. Required quantities which are necessary for good easy care performance of cotton fabric are depending greatly on applied polycarboxylic acid (PCA). Finding an optimum catalyst system for PCA curing is still an open problem which must be solved. Best effects of esterification reaction followed by good strength retention and whiteness properties, have been obtained with sodium hypophosphyte (SHP), which is rather expensive as well. For the replacement of SHP, much cheaper catalysts based on the phosphonic acid, were tried to apply, alone or in different ratios with SHP. These catalysts were sodium salts of phosphonic acid in two different forms: tetrasodium salt of the hydroxyethylidene 1, 1-diphosphonic acid (HEDPA) and octasodium salt of the diethylenetriaminepentamethylenphosphonic acid (DETMPA). Addition of phosphono based catalysts as accelerators in a system with BTCA, CA and their mixture has enhanced their effectiveness as DP finishing agents in few cases. More significant is possible reduction of 50% SHP in CA treatment, and 30% in a case of BTCA treatment, while keeping good resiliency results.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija

POVEZANOST RADA