NF 424 is an aqueous dispersion of a modified carboxylated styrene butadiene copolymer. It has been developed for use in precoat of tufted carpet and for needlefelt coating and impregnation and will impart a stiff hand to the final carpet.
|Solids||49.5 – 50.0||%|
|pH||7.7 – 8.3|
|100 Mesh residues||0.1||gram/litre maximum|
|325 Mesh residues||0.2||grams/litre maximum|
|Brookfield viscosity||50 – 200||mPa.s (spindle 2 @ 50 rpm)|
|Film character||clear, continuous|
|Glass transition temperature||13||°C|
|Styrene in polymer||63.0||%|
|Needlefelt impregnation||– one side||++|
|– full bath||++|
|Woven carpet backsizing||+|
|Rubber crumb binder|
|(++ highly recommended)|
These data are typical values and cannot be construed as a specification. For product handling and safety aspects, please refer to the Material Safety Data Sheet.