Properties of Cotton Fabrics Treated with Hydroxymethylated 2-Substituted Melamines -Comparison of Zinc Nitrate with Magnesium Chloride as Catalyst-

Abstract

Cotton fabrics were treated with hydroxymethylated 2-diethanolamino-(MDEL), 2-monoethanolamino- (MMEL) and 2-monoethylamino-4, 6-diamino-s-triazines(MMET) in the presence of Zn (NO₃)₂, and MgCl₂ as catalysts. The effects of the catalyst on the fabric properties were examined in comparison with those by the conventional pad-dry-cure technique.
The order of the crease recovery angle of the fabrics treated in the presence of either catalyst was MDEL > MMEL > MMET, and the orders of the tearing strengths, tensile strengths and elongations at breaks were MMET > MMEL > MDEL. In general, the Zn (NO₃)₂, catalyst gave slightly better effects than MgCl₂ on the properties of the fabrics.
Judging from the relationship between the crease recovery angles and the tearing strengths, the order of the resultant effect on the improvement of the properties of the treated fabrics was considered to be MDEL > MMEL > MMET in the presence of Zn (NO₃)₂ as catalyst, but MMEL > MDEL > MMET in MgCl₂. The effect of Zn (NO₃)₂, as catalyst on the balance between the improvement of the crease recovery and the retention of the strengths was slightly better than MgCl₂ in the fabrics treated with MDEL and MMEL, but the order was reversed with MMET.