dyeing of cellulosic fabrics with reactive dyes
TRANSCRIPT
1Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
OO
OOH
OHCH2OH
CH2OH
O
HOOH
OO
OOH
OH
CH2OH
2Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Market share of dyestuffs for cellulosic fibers worldwideMarket share of dyestuffs for cellulosic fibers worldwide
Reactive48%
Direct19%
Vat16%
Sulphur15%
Others2%
3Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Reactive dyes are the most important dyeclass for cellulosic fibers
Reactive dyes are the most important dyeclass for cellulosic fibers
Dyeing auxiliariesDyeing auxiliariesR eac ti ve
48%
Di r ec t
19%
V at
16%
Sul phur
15%
Other s
2%
To obtain a levelled dyeing the
Demands on dyeing auxiliaries for dyeing with Demands on dyeing auxiliaries for dyeing with reactive dyes by the exhaust methodreactive dyes by the exhaust methodare demonstrated and furthermoreare demonstrated and furthermore
the most important dyeing parameters are explained
To obtain a levelled dyeing the
Demands on dyeing auxiliaries for dyeing with Demands on dyeing auxiliaries for dyeing with reactive dyes by the exhaust methodreactive dyes by the exhaust methodare demonstrated and furthermoreare demonstrated and furthermore
the most important dyeing parameters are explained
4Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
The fabric should not contain any disturbingThe fabric should not contain any disturbing residual substancesresidual substances
The fabric should not contain any disturbingThe fabric should not contain any disturbing residual substancesresidual substances
Demands on pretreated cellulosic fabricDemands on pretreated cellulosic fabric
pH neutral - slightly acid no heavy metal and low alkaline earth metal content good absorbency
low content of residual surface active agents
no residual peroxide !no residual peroxide !
5Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Residual products from preparing processResidual products from preparing process
in the reactive dyebathin the reactive dyebath
Safety can be achieved by using an agent for peroxide destruction
before the dyeing process
Safety can be achieved by using an agent for peroxide destruction
before the dyeing process
0.1 g/l residual peroxide
0.1 g/l residual hydrosulfite
2.0 g/l MEROPAN BRE
0.5 g/l CHT - CATALASE BF
Originaldyeing
6Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Products for peroxide destruction
Inorganic salts
MEROPAN BRE
economic process: saving of water, energy and time
Enzymes / bio-catalysts
CHT-CATALASE BF
CHT-CATALASE FTS 40
dyeing in the same bathlow water consumptioneconomic processecological process no waste water pollution!
7Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Application requirements of MEROPAN BRE Application requirements of MEROPAN BRE
check
pH - and
H2O2
MEROPAN BRE
If necessary rinse, refill
reactivedyeingprocess
dye bathdestruction of residual peroxide
• bleach 95 °C / 203 °F, 30 min
• cool down to80 - 90 °C/176 - 194 °F
bleach bath
> pH 10
Advantage: - one bath-two step bleach possible, - residues of MEROPAN BRE do not disturb the reactive dyeing process
15 min
8Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Enzymatic destruction of peroxideEnzymatic destruction of peroxide Enzymes are bio-catalysts: • Catalysts are chemical substances which accelerate reactions
without being used up. • Enzymes are formed in the living organism. This natural production is
also used in a synthesis way, the enzymes are produced with fungi or bacteria cultures on large scale.
• Advantage: completely biodegradable!• Because of their cellular structure
the enzymes have a clear defined surface.• An enzyme has on the surface an
active centre with an equal complementary centre.• the enzymes work like a key-lock princip
+
+
enzyme substrate enzyme-substrate-complexe
enzyme splitting product splitting
9Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Efficiency of catalasesEfficiency of catalasesCatalases are enzymes which accelerate the decomposing reaction
from hydrogen peroxide to inactive oxygen and water.
The catalase accelerates the reaction but is not used up and will
be continuously efficient.
The catalase does not have any influence on the dyestuff, therefore it can
be dyed directly without intermediate rinsing process.
H O
O2H2O
+CHT-
CATALASE BF
+H2O
HO
H OHO
10Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
CHT catalase product range
CHT-CATALASE BF CHT-CATALASE FTS 40
thermostable product low temperature/low-price
20 - 60 °C / 68-140°F 20 - 40 °C / 68-104 °F
pH range: 4 - 9 6 - 9
time: ~ 10 min ~ 10 min
0.3 - 0.6 g/l 0.3 - 0.6 g/l
at 20°C / 68°F
1 part CHT-CATALASE BF = 1 part CHT-CATALASE FTS 40
at 40°C / 104°F
1 part CHT-CATALASE BF = 1.5 parts CHT-CATALASE FTS 40
CHT-CATALASE BF CHT-CATALASE FTS 40
thermostable product low temperature/low-price
20 - 60 °C / 68-140°F 20 - 40 °C / 68-104 °F
pH range: 4 - 9 6 - 9
time: ~ 10 min ~ 10 min
0.3 - 0.6 g/l 0.3 - 0.6 g/l
at 20°C / 68°F
1 part CHT-CATALASE BF = 1 part CHT-CATALASE FTS 40
at 40°C / 104°F
1 part CHT-CATALASE BF = 1.5 parts CHT-CATALASE FTS 40
11Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
CHT-CATALASE BF and CHT-CATALASE FTS 40 CHT-CATALASE BF and CHT-CATALASE FTS 40 range of use in comparisonrange of use in comparison
° C °F
40 104
50 122
60 140
70 15880 176
90 194
pH-value1 2 8 9 10 11 123 4 5 6 7
FTS 40
BF
30 86
20 68
10 50
CHT-CATALASE FTS 40 is cheaper,but less thermostable
12Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
For optimum efficiency For optimum efficiency following conditions are required:following conditions are required:
Application requirements:
H2O2 bleach
Rinse
Fresh bath (check pH)
Add catalase
Treat 10 - 15 min at required temperature
Remaining peroxide control, e.g. with Merck® test stripes
Dyeing in the same bath
13Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Detection and semiquantitative determination of peroxides in aqueous solutions with test strips
Analytical test strips from Merck® contain peroxidase.Peroxidase transfers oxygen from the peroxide to an organic redox indicator, which is then converted to a blue-coloured oxidation product.
Instructions for use:
Immerse the reaction zone in the solution for 1 sec.Shake off excess liquid from the strip.Compare with the colour scale (0.5-25 mg/l H2O2)after 15 sec.
The appearance of any blue coloration within 3 mincan be interpreted as a positiv reaction.
14Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Determination of residual peroxide on bleached fabric
A drop of TiCl4 reagent is put on the bleached fabric.The colour is compared with a scale.
without H2O2 with H2O2
15Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Application amount of peroxide killersApplication amount of peroxide killers
MEROPAN BRE
1 part H2O2 35% = 2 parts MEROPAN BRE
1 kg H2O2 35% 2 kg MEROPAN BRE
CHT-CATALASE BF1 part H2O2 35% = 0.167 part CHT-CATALASE BF
1 kg H2O2 35% 0.167 kg CHT-CATALASE BF € 0.93
16Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Demands on lubricants for Demands on lubricants for cellulosic fiberscellulosic fibers
With lubricantWith lubricant reduces creases on piece
dyeing prevents cracks and
abrasion marks reduced textile-to-textile
friction CHT solution:
BIAVIN - lubricants
17Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Demands on lubricants for Demands on lubricants for cellulosic fiberscellulosic fibers
The BIAVIN lubricants allow smoothly running dyeing processes on the following conditions:
heavily loaded jet and overflow dyeing machines, for delicate, light, but bulky fabrics
for harsh fibers with the tendency to form cracks
for pile fabrics sensitive to abrasion
18Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
CHT - range cellulosic lubricantsCHT - range cellulosic lubricants
application amount0.1 - 0. 3 g/l
reduces friction of fabricexhaust onto the fabric w ith salt
w ashed off by rinsing
Cell, PES, PA, WO, silk
emulsified fat compoundconcentrated product
anionic
BIAVIN 109
application amount1.0 - 2.0 g/l
viscosity is slightly increasedexcellent gliding properties
cellulosics and blends
sulfated fats
anionic
BIAVIN GLM
application amount1.0 - 2.0 g/l
viscosity is increasedhigher liquor pick up
slipping effectfriction is reduced
all sorts of fibers
polymeric amidesuniversally applicable
no ionic character
BIAVIN BPA
application amount0.5 - 2.0 g/l
exhaust onto the fabricremains partially
softer handlebetter sew ability
cellulosics andsynthetic m icrofibers w ith EL
polyethylene emulsionnonionic
BIAVIN TCC
CHT anticrease agents and lubricantsfor cellulosics and blends
19Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Cellulosic articles with elastane add wetting agent add 2 - 3 g/l BIAVIN TCCBIAVIN TCC load fabric into the dyeing machine fabric must have good and same wetting
properties prescour or prebleach rinse add dyebath auxiliaries + 1.0-1.5 g/l BIAVIN TCCBIAVIN TCC raise dye temperature slowly and cool down slowly
20Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Demand on dyeing levelnessDemand on dyeing levelness
Levelling agent for reactive dyes ?Levelling agent for reactive dyes ? Levelling agents in the classical meaning are
not available for reactive dyeings. Reason for this is the reaction of the reactive
dye with the cellulosic fiber. Migration of already fixed dye molecules is not
possible ! This would be a chemical miracle.
How does CHT solve this problem ?How does CHT solve this problem ?
21Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
CHT solutionCHT solution
22Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
SARABID LDR = dyebath conditionerSARABID LDR = dyebath conditionerSARABID LDR = dyebath conditionerSARABID LDR = dyebath conditioner
How does How does SARABID LDRSARABID LDR work ? work ? increases the dyestuff solubility and therefore
improves the dye diffusion into the fiber excellent dispersing effect inactivates Ca, Mg in water and on textile prevents dyestuff agglomerations avoids precipitations of all kinds of impurities
brought into the dyebath by fiber or water applicable in cellulosic dyeing with reactive dyes
and CEL/PES blends one-bath dyeing
23Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Dyebath conditionerDyebath conditioner
special polyacrylate and special polyacrylate and
dispersing agentdispersing agent
anionicanionic
active content: 26%active content: 26%
stable at HT dyeing conditionsstable at HT dyeing conditions
application amount: 1 - 2 g/lapplication amount: 1 - 2 g/l
24Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Visualization of a dyebath conditioner ?Visualization of a dyebath conditioner ?
The efficiency of a dyebath conditioner is difficult to demonstrate.
The following special filter tests show a combination of dye solubility and soilings...
25Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Filter test methodFilter test method
Treat 100 % greige cotton fabric
LR 1 : 10 soft water 10 °dH (180 ppm CaCO3)
20 °dH (360 ppm CaCO3)
30 minutes at 95°C/ 203°F cool down to the
recommended dyeing temperature of the dye
remove the cotton fabric
In these liquors put• y g/l SARABID LDR• 0.1 g/l dyestuff• 40 g/l Glauber‘s salt• 5 g/l soda ash • 2 ml/l NaOH 38°Bé• treat for 10 minutes at the
recommended dyeing temperature
• filtrate
judge the filters visually
26Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Filter test at 80 °C / 176 °F with 0.1 g/l C.I. Reactive Yellow 138
0 °dH0 ppm
10 °dH180 ppm
20 °dH360 ppm CaCO3
without auxiliary
2 g/l SARABID LDRBenefit prevents dyestuff agglomerations
27Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
0 °dH0 ppm
10 °dH180 ppm
20 °dH 360 ppm CaCO3
without auxiliary
2 g/l SARABID LDR
Filter test at 60 °C / 140 °F with 0.1 g/l C.I. Reactive Red 106
Benefit increase of dyestuff solubility
28Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Filter test at 80 °C / 176 °F with 0.1 g/l C.I. Reactive Blue 160
0 °dH0 ppm
10 °dH180 ppm
20 °dH 360 ppm CaCO 3
without auxiliary
2 g/l SARABID LDR
Benefit good dispersing properties
29Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Filter test at 80 °C / 176 °F with 0.1 g/l C.I. Reactive Blue 71
0 °dH0 ppm
10 °dH180 ppm
20 °dH360 ppm CaCO3
without auxiliary
2 g/l SARABID LDR Benefit increase of dye solubility
30Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Filter test at 60 °C / 140 °F 10 °dH with 1 g/l C.I. Reactive Blue 21
Dyestuff with
0.1 g/l FELOSAN RG-N
Dyestuff with
0.1 g/l FELOSAN RG-N
2 g/l SARABID LDR2 g/l SARABID LDR
Residues of nonionic detergents from pretreatment can cause problems with dye solubility.
The solution is the addition of The solution is the addition of SARABID LDRSARABID LDR into the dyebath. into the dyebath.
++
31Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
SARABID LDR = dyebath conditionerSARABID LDR = dyebath conditionerExcellent levelling behaviour
for reactive dyes
Increaseof dyesolubility
Good dispersing and sequestering capacity
32Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Demand on end-useDemand on end-use
excellent rinseexcellent rinse to remove electrolyte, alkali, residual dyesto remove electrolyte, alkali, residual dyes
wash offwash offto release and outward diffusion of dye to release and outward diffusion of dye
hydrolysateshydrolysates
cationic fixationcationic fixationto reach the fastness level to reach the fastness level
Excellent durability of reactive dyed goods can Excellent durability of reactive dyed goods can only be obtained if the fabrics are treated after the only be obtained if the fabrics are treated after the dyeing process in the following way:dyeing process in the following way:
33Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Demand on a washing agent for reactive dyesDemand on a washing agent for reactive dyes
good washing off behaviour of reactive dyes speed in washing off blocks renewed uptake of the dye hydrolysate
from the washing liquor good calcium binding and dispersing behaviour no effect on shade no impairment of light fastness good ecological features maximum end use fastness properties
34Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Influence on washing performanceInfluence on washing performance
Dyestuff character and fixation grade of the dye electrolyte content in the soaping bath water quality pH - value temperature and time liquor ratio mechanical effect of the machinery equipment number of soaping baths
chemical character of the washing agentchemical character of the washing agent
35Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Technical performance of our CHT range of soaping agents Technical performance of our CHT range of soaping agents for reactive dyeingsfor reactive dyeings
COTOBLANC NSRmixture of organ. & inorganic compounds, free of tenside22 %100 %, powderanionicadd into hot water and stir0.2 - 0.5 g/l state-of-the-art product best wash off efficiency of
reactive dyeings in soft water < 10°dH, high dyestuff affinity
safes wash baths poor solubility: 70 g/l at 25°C/77°F not recommended for
continuous washing machines with hard water risk of filtrations on
X-bobbins (precipitations with insoluble Ca-salts)
only for reactive dyeings
Chem. character
P - contentActive contentIonic characterDissolvingApplication amountProduct features
MEROPAN DPEmodified polyacrylate & phosphonates1,5 %32 %, liquidanionicin each ratio with water soluble1.0 - 2.0 g/l
excellent soaping behaviour in hard water because of good sequestering properties
good dispersing properties universal product for cellulosics:
suitable as sequestering and soaping agent for reactive, vat, sulphur dyes...
36Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Technical performance of our CHT range of soaping agents Technical performance of our CHT range of soaping agents for reactive dyeingsfor reactive dyeings
COTOBLANC CSLsodium salt of a modified polycarbonic acid
-20 %, liquid, non foaminganionicin each ratio with water soluble 1 - 3 g/l washing agent for reactive
dyeings good soaping efficiency in hard
water with 3 g/l suitable for application in
batchwise and continuous ranges
COTOBLANC CSLsodium salt of a modified polycarbonic acid
-20 %, liquid, non foaminganionicin each ratio with water soluble 1 - 3 g/l washing agent for reactive
dyeings good soaping efficiency in hard
water with 3 g/l suitable for application in
batchwise and continuous ranges
Chem. character
P - contentActive contentIonic characterDissolvingApplication amountProduct features
COTOBLANC KRSmix of polyacrylate + modified phosphonates0.62 %24 %, liquidanionicin each ratio with water soluble1- 3 g/l soaping agent for reactive and
vat dyeings good washing behaviour designed for continuous
wash off processes
COTOBLANC KRSmix of polyacrylate + modified phosphonates0.62 %24 %, liquidanionicin each ratio with water soluble1- 3 g/l soaping agent for reactive and
vat dyeings good washing behaviour designed for continuous
wash off processes
37Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Classification of CHT - soaping agentsClassification of CHT - soaping agents
1. COTOBLANC NSR1. COTOBLANC NSR
2. MEROPAN DPE2. MEROPAN DPE
3. COTOBLANC CSL3. COTOBLANC CSL
4. COTOBLANC KRS4. COTOBLANC KRS
Best soaping performance
Universal dyeing auxiliary
Cheap product,P-free
Continuous wash off processes
38Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Washing off procedure with COTOBLANC NSRWashing off procedure with COTOBLANC NSR
CO Single Jersey, prebleachedThies-Roto Stream® LR 1 : 10Dyeing recipe: 3.0 % Drimaren Turquoise X-B0.5 % Drimaren Brill.Green X-3G
95°C 70°C 50°C 20°C203°F 158°F 122°F 68°F
57
25
14
3,50 2 0,10
10
20
30
40
50
60
% w
ash
off
dye
co
nte
nt
70°C 70°C 95°C 70°C 50°C 20°C
10 min each
wash off performance of COTOBLANC NSR
95°C 70°C 70°C 70°C 50°C 20°C 203°F 158°F 158°F 158°F 122°F 68°F
COTOBLANC NSRCOTOBLANC NSR
Conventional anionic surfactantConventional anionic surfactant
BenefitBenefit reduced rinsing bath after soapingreduced rinsing bath after soaping
39Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Determination of the washing off behaviourDetermination of the washing off behaviour
Special washing test method to evaluate the removal of reactive dye hydrolysate from the fiber
Step 1. Hydrolyse reactive dyestuff with alkali
Step 2. Pad the hydrolysed dye solution with hardness on 100 % cotton fabric under defined conditions = basic fabric
Step 3. Wash test
Treat the basic fabric with white cotton adjacent fabric in ratio 1 : 1
Soap with x g/l washing agent
LR 1 : 20, 98°C / 212°F, 2 x 15 min
judge the basic fabric and the soiling onto the adjacent fabrics
40Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Determination of the washing off behaviourDetermination of the washing off behaviourSpecial test method of washing agents for the removal of
reactive dyestuff hydrolysate
Basic fabric2 x
soaped fabricadjacentfabric 1
adjacentfabric 2 10 °dH
withoutauxiliary
0.25 g/lCOTOBLANC NSR
0.5 g/l COTOBLANC NSR
41Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Determination of the washing off behaviourDetermination of the washing off behaviour
Without soaping agent
0.25 g/l COTOBLANC NSR
1.0 g/l MEROPAN DPE
1.0 g/l COTOBLANC KRS
1 2 3 4 10°dH
1 = padded fabric
2 = padded fabric soaped 2 x
3 = staining on adjacent CO soaped 1x
4 = staining on adjacent CO soaped 2x
42Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Demand on the end use of a reactive dyeingDemand on the end use of a reactive dyeing
Where wet fastness is
of critical importance
is recommended
as an extra insurance and
an essential operation
cationic aftertreatmentcationic aftertreatment
43Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Demand on an ideal cationic fixing agentDemand on an ideal cationic fixing agent
improvement of the wash and contact fastnesses prevents migration during drying protects dye / fiber bound of reactive dyes against hydrolysis
and thermocracking broad application range for different dye classes and fibers no influence on shade and on light fastness no adverse effect on handle no impairment of the sewability no deterioration of rewettability formaldehyde and heavy metal free for application on all kind of machines low price
44Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
REWIN MRTREWIN MRT
Polyammonium compound
excellent improvement of contact fastnessesno shade changeno deterioration of light fastnessprevention of hydrolysisno influence on the handle and the re-wettability free of formaldehyde
no or only minimum improvement of the wash fastness
application : 2 - 3 %
45Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Fastness improvement with REWIN MRTFastness improvement with REWIN MRT
CO CV
without fixative
2 % REWIN MRT
3 % REWIN MRT
CO WO
Wash fastness 60°C EN ISO 105 - C06 - C2S Water fastness EN ISO 105 - E01
4 % Levafix Scarlet E-2GA
without fixative
2 % REWIN MRT
3 % REWIN MRT
46Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
REWIN MRTREWIN MRT
012345
Wash fastness 40 °C/104 °F
Wash fastness 60 °C/140 °F
Contact/wet fastness
Reactive dyes
Direct dyes
Stripping behaviour andredyeability
Shade change
Product costs at saturation
47Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
REWIN ACPREWIN ACPPolyammonium compound, copolymer good allround product, mainly on reactive dyeings excellent wash fastness levels copolymer = good improvement of washing fastnesses of reactive dyeings good contact fastnesses
no deterioration of the light fastness
no or only small shade changes
no influence on the handle and the re-wettability
free of formaldehyde
recommended for discontinuous application
in pad application dye hydrolysate spots can occur if the reactive dyeings are not rinsed and washed off satisfactioned
application: 2 - 3 %
48Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Fastness improvement with REWIN ACPFastness improvement with REWIN ACP
Wash fastness 60°C EN ISO 105 - C06 - C2S
without fixative
2 % REWIN ACP
CO WO
Water fastness EN ISO 105 - E01
without fixative
2 % REWIN ACP
4 % Bezaktiv Red HE-3B
CA CO PA PES PAN WO
49Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
REWIN ACP
012345
Wash fastness 40 °C/104 °F
Wash fastness 60 °C/ 140°F
Contact/wet fastness
Reactive dyes
Direct dyes
Stripping behaviour andredyeability
Shade change
Product costs at saturation
50Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
REWIN TNREWIN TNPolyalkylene polyamine
best improvement of washing fastnesses of direct and reactive dyeings
excellent improvement of wet/contact fastnesses
protection of hydrolysis and migration
suitable for exhaust and pad applicationno influence on the handle and the re-wettability free of formaldehyde and heavy metal
no or only small influence on the light fastness possible
sometimes shade change depending on dyestuff
application: 2 - 3 %
51Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Fastness improvement with REWIN TN
Wash fastness 40°C EN ISO 105 - C06 - A1S Water fastness EN ISO 105 - E01
2 % Solophenyl Blue BFF
without fixative
2 % REWIN TN
2 % REWIN ST
without fixative
2 % REWIN TN
2% REWIN ST
CO CV CO WO
52Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
REWIN TNREWIN TN
012345
Wash fastness 40 °C/ 104 °F
Wash fastness 60 °C/140 °F
Contact/wet fastness
Reactive dyes
Direct dyes
Stripping behaviour andredyeability
Shade change
Product costs at saturation
53Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
REWIN DWRREWIN DWR
Reactive polyammonium compoundwash fastness improvement of critical reactive turquoise
and green dyeingsgood wet fastness propertiesexcellent protection of hydrolysis and thermocrackingno or only minimum shade change
high application amount of 4 - 6 %difficult application: pH 7.5 - 8 %, 40 - 50°C/ 104-122°Fdifficult stripping behaviour and redyeability
54Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
REWIN DWRREWIN DWR
012345
Wash fastness 40 °C/ 104 °F
Wash fastness 60°C/140°F
Contact/wet fastness
Reactive dyes
Direct dyes
Stripping behaviour andredyeability
Shade change
Product costs at saturation
55Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
REWIN OSREWIN OS
Special polyammonium compound with reactive groups to improve wash and wet fastness level of selected direct dyeings
application by exhaust method:
3.0 - 3.5 % REWIN OS 2 ml/l NaOH 38 ° Bé
treat 20 - 30 mins at 40°C / 104°Frinse well and neutralise
56Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Wash fastness improvement with REWIN OSWash fastness improvement with REWIN OS Dyeing ( 1 %), 40 °C / 104 °F wash test, grade 4 can be reached:
Tubantin yellow GR Tubantin orange GGLN 200 % Tubantin pink 2 B Tubantin red F 3 B conc. Tubantin bordeaux 2 BL conc. Tubantin rubine 5 B Tubantin violet BL 200 % Tubantin blue BRR h.c. Tubantin blue GLL 300 % Tubantin green 5 GL conc. Tubantin brown GGL Tubantin brown BLTubantin grey CGLL
57Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Fastness improvement with REWIN OSFastness improvement with REWIN OS
CO WO
Wash fastness 40°C EN ISO 105-C06 - A1S
without fixative
3.5 % REWIN OS
Water fastness EN ISO 105 - E01
without fixative
3.5 % REWIN OS
CO WO
1.0 Tubantin orange GGLN 200%
58Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Overview of various/important REWIN fixativesOverview of various/important REWIN fixatives
REWIN application field improvement of
saturationlimit in %
reactive direct package continuous contactfastness
washfastness
ACP(DD)
2.0 – 3.0(1.0 –1.5)
+ (+) + (+) + +
DWR 4.0 – 6.0 + - + - + +
MRT 3.0 – 3.5 + + + + + -
TN 2.0 – 3.0 + + + + + +
+ well suitable(+) suitable to a certain extent - not suitable
59Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Dyeing process guideline Dyeing process guideline for reactive hot dyes on jetfor reactive hot dyes on jet
Dyeing recipeDyeing recipe0.1 - 0.3 g/l BIAVIN 109 or 1.0 - 2.0 g/l BIAVIN BPA / TCC1.0 - 2.0 g/l SARABID LDRx % reactive dyey g/l salt
z g/l alkali (NaCO3/NaOH)
Wash off0.2 - 0.5 g/l COTOBLANC NSRor1.0 - 2.0 g/l MEROPAN DPEor 1.0 - 3.0 g/l COTOBLANC CSLor1.0 - 3.0 g/l COTOBLANC KRS
Wash off0.2 - 0.5 g/l COTOBLANC NSRor1.0 - 2.0 g/l MEROPAN DPEor 1.0 - 3.0 g/l COTOBLANC CSLor1.0 - 3.0 g/l COTOBLANC KRS
Cationic fixing
2.0 - 3.0 % REWIN ACPor2.0 - 2.5 % REWIN TNor ...
Cationic fixing
2.0 - 3.0 % REWIN ACPor2.0 - 2.5 % REWIN TNor ...
0
20
40
60
80
100
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 320
add auxiliaries add dye
add salt
add alkali
add wash auxiliary addfixative
212
176
140
104
68
°C °F
60Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Dyeing auxiliaries for cellulosic fibersDyeing auxiliaries for cellulosic fibers
Further products ...
61Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Faulty dyeingsFaulty dyeings
1 If a cationic aftertreated cellulosic dyeing (e.g. direct dyeing, reactive dyeing, sulphur...) has to be redyed because of spots, unlevelness, shade...
the cationic fixing agent has to be removed / stripped in the first step
62Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Stripping/Masking of cationic fixativesStripping/Masking of cationic fixatives
5 g/l CHT-DISPERGATOR SMS
x ml/l acetic acid 60 % (pH 4.0 - 4.5)
30 mins at 98°C / 212 °F
rinse well
repeat the treatment
63Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
CHT-DISPERGATOR SMSCHT-DISPERGATOR SMS
amine salt of naphthalene sulphonic acid anionic liquid easy handling foamfree universally applicable dispersing agent levelling agent special stripping agent application: 1 - 5 g/l
(according to application procedure)
64Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
Faulty dyeingsFaulty dyeings
2 Dyed fabrics in rope form with fiber fluff, pillings, abrasion spots,fibrillation...
Bio - polish treatmentSurface treatment
65Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
BEIZYM UL - BEIZYM UL - Surface treatment agentSurface treatment agent
Cellulase with broad application spectrum
Chemical Character : Special cellulase blend, non ionic
Properties : - removal of fiber fluff, abrasion spots and pillings
- defibrillation of Lyocell fibers
- improvement of the handle
- useful for enzymatic stone wash of jeans
- small influence on tensile strength
66Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
BEIZYM UL - BEIZYM UL - Surface treatment agentSurface treatment agent
• Application recommendation• Machine equipment: jet, overflow, tumbler• Fibers: all cellulosic fibers Application amount: 0.5 - 1.5 % BEIZYM UL
(depending on effect)• Liquor ratio: 1 : 5 - 1 : 20• Temperature: 45 - 55°C / 113 - 131 °F• pH value: 4.5 - 5.5 (adjust before enzyme
addition, mainly with acetic acid and sodium acetate)
• Time: 20 - 60 min (depending on effect)
Enzyme stop: increase pH with soda ash up to 9 or temperature increase to 85 - 90°C / 185 - 194°F
67Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
BEIZYM UL - BEIZYM UL - Surface treatment agentSurface treatment agent
Bio - polish with BEIZYM UL
basic fabric with pills 1.0 % BEIZYM UL
68Dyeing Department Technical Weeks - 03.07. 02 Susanne Ehret
For further questionsFor further questions
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