Colour Chronicle - April 2012 - Clariant

The combination of Imerol ® Blue liq
and optical brighteners makes you able
to achieve highest degree of whiteness.
Either in one step for high whiteness or in
two steps for the brightest optical white,
the Blue Magic process will always dazzle
you.
Full white in one step
Recipe
Imerol ® Blue liq 1.0 %
NaOH 48° Bé 1.8 %
H 2 O 2 50 % 6.0 %
Leucophor ® BSB liq 0.7 %
Process
Treatment: 20 min. at 110°C
Rinsing: 10 min cold
Neutralizing with Sirrix ® NE liq
Liquor ratio: 1 : 10
Full white in two steps
Peroxide bleaching at 110°C – for highest
white ever
Recipe
Imerol ® Blue liq 1.0 %
NaOH 48° Bé 1.8 %
H 2 O 2 50 % 6.0 %
Process
Treatment: 15 min at 110°C
Rinsing: hot
Liquor ratio: 1 : 10
Reductive bleaching at 70°C
Recipe
Arostit ® BLN Gran 4.0 %
Leucophor ® BSB liq 0.8 %
Process
Treatment: 20 min at 70° C
Rinsing: warm and cold
Liquor ratio: 1 : 10
Blue Magic high temperature
120°C
100°C
80°C
60°C
40°C
20°C
Imerol ® Blue liq – High temperature
max up to
5° C/min
Blue Magic atmospheric
120°C
100°C
80°C
60°C
40°C
20°C
110°C 15 min
Drain
max
5 ’ 10’ Dyeing
0.35 % Bactosol ® 2.5 % H2O2 50 %
1.2 % Imerol
SAP liq c
® Blue liq
1.2 % NaOH 48° Bé Sirrix ® NE liq to pH 7.0
textile
All you need to be ready for dyeing
With the following parameters the Blue Magic process creates high absorbency as well as
a good base whiteness while reducing costs and treatment time.
0 10 20 30 40 50 60 70 80 90 Time (min)
Results
Good degree of whiteness
Excellent absorbency
Fabric ready for dyeing
Imerol ® Blue liq – Atmospheric
max up to
5° C/min
Recipe
Imerol ® Blue liq 1.2%
NaOH 48°Bé 1.2%
H2O2 50%
Liquor Ratio
2.5%
1:8
95°C 30 min
Drain
5’ 10’ Dyeing
0.35 % Bactosol ® 2.5 % H2O2 50 %
1.0% Imerol
SAP liq c
® Blue liq
2.2 % NaOH 48° Bé Sirrix ® NE liq to pH 7.0
0 10 20 30 40 50 60 70 80 90 Time (min)
Results
Good degree of whiteness
Very good absorbency
Fabric ready for dyeing
max
Recipe
Imerol ® Blue liq 1.0%
NaOH 48°Bé 2.2%
H 2O 2 50% 2.5%
Liquor Ratio 1:8
Important parameters
Initial pH 10.5
pH after refi lling* 7.5
* with optimal conditions
Important parameters
Initial pH 11.0
pH after refi lling* 8.5
* with optimal conditions
Clariant’s wide range of optical brighteners for cellulosic fi bers and their blends is
perfectly adapted to the one step Blue Magic bleaching and brightening (Brighten Blue).
A separate brightening combined with a reductive bleaching is also possible with selected
optical brighteners.
Product Shade Affinity Reductive pH stability Reductive Light Fastness to
bath 2) bleaching fastness wash 60 / 95°C
Leucophor ® BSB neutral bluish xxx � > 5.5 xxx 3– 4 4/4
Leucophor ® BSBB 1) bluish xxx > 5.5 – 3– 4 3– 4 / 3– 4
Leucophor ® PC neutral reddish xxx � > 3.5 xxx 3– 4 4/4
Hostalux ® CPA01 1) neutral xxx � > 3.5 xxx 4 4/4
Leucophor ® BMB 1) neutral bluish xx � > 5.5 xxx 3– 4 4– 5 / 3– 4
Leucophor ® BMBB bluish violet xx > 5.5 – 3– 4 3– 4 / 3– 4
Leucophor ® BMF.ID 1) neutral reddish xx � > 3.5 xxx 3– 4 4– 5 / 3– 4
Leucophor ® BMFV bluish xx > 3.5 – 3– 4 4– 5 / 3– 4
1) The use of salt (3 g/l Sodium Sulfate) increases the degree of whiteness
2) Suitable for 2-step bleaching (oxidative bleaching + reductive bleaching/brightening)
colour chronicle 2 | 2012 5