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The f Value of YU RIM CATIONIC DYES in the shade card is calculated by the following.
f = Sf / Ds
Sf : Saturation value of the acrylic fider to be used.
Ds : Saturation value of the dye to be used.
 Saturation value of acrylic fibers are shown in the following table.
| Fiber |
Saturation value |
Manufacturer |
| Cashimilon F |
2.0 |
HAN-IL in Korea |
| Exlan DK |
1.8 |
TEA-KWANG in Korea |
(The above values are the results from our lab)
In order to dye acrylic fiders economically with best levelness and reproducibility, the total amount of dye
and cationic retarder must be 70~80% against the dye site of acrylic fiber.
This ratio is called Saturation rate or D.C
Calculation of Dyeing Coefficient(D.C)
D : % of the dye to be used
Df : f value of the dye to be used
R : % of the retarder to be used
Rf : f value of the retarder to be used
Sf : Saturation value of the acrylic fiber to be dyed
D.C of Acrylic fibers
| Acrylic fiber |
Limited D.C |
Optimum D.C |
| Cashimilon F |
70 |
80 |
| Exlan DK |
80 |
90 |
(PAN is used as retarder)
lmix of
dye the optimum D.C. value
| |
PAN type |
| lmix |
AA-A |
A-B~C-D |
D-EE |
| D.C. |
80 |
70 |
60 |
| D.C.(When 10% Na©üSo©þis added |
70 |
60 |
50 |
(Cashimilon F was used)
There are 3 kinds of cationic retarder as PAN type, AN type and L type.
The affinity of PAN type is C level in l mix classification.
And it is used widely and ideally in compound dyeing.
The values of retarders are shown in following table.
| Name |
Manufacturer |
Type |
f value |
| Levelnon PAN |
Dong-Nam |
PAN |
0.58 |
| Sun retarder PN |
Korea Fine Chemical |
PAN |
0.60 |
| Fanalon KAN |
Wha-Young |
PAN |
0.60 |
| Astragal PAN |
Bayer |
PAN |
0.55 |
The required quantity of retarder can be calculated by following.
Solubility
It was tested at 80¡É in water.
pH stability
We found out reasonable pH range that did not give different shade.
Fastness
Light : AATCC Test Method 16A
Steaming : ISO 105-E11, 100¡É ¥ª 30min, 120¡É ¥ª 10min
Iron Test : ISO / R 105 / 1-1959pt, 17, 160¡É ¥ª 15seconds
Potting : ISO / R 105/1-1959pt, 16
Rubbing : ISO / R 105/1-1959pt,18
Abbreviation for staining
-- : Almost no stain
- : A little stain
+ : Markable stain
++ : Badly stain
Al : Alteration
St©û: Acrylicfiber staining
St©ü: Cotton staining
Staining properties are the ones when 50:50 blends of acrylic fiber and others were dyed in medium shade in the same bath.
Abbreviation for shade
D : Darker, Y : Yellower, B : Bluer, L : Light, R : Redder
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