dachcom - CHT Gruppe - Spezialchemikalienfile/... · tivity and reactivity, no shifts in shade occur due to tailing with the BEZAKTIV HP dye range. There is also no difference in

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UnIqUE IdEAs. UnIqUE soLUTIons.

12/1

4_en

BEZAKTIV HPTop-class dye range

WORLD-CLASS TOP VALUES PERFECT TERNARY PROPERTIES

Extreme routes can only be successfully mastered with the best equipment. Abso-lute material reliability is only a basic re-quirement. Maximum commitment and boundless passion combined with the highest material demands regarding func-tionality and versatility mean that even the most ambitious aims can be reached.

> Reach youR cellulose dye-ing aims wiTh BeZaKTiV hP!

The BEZAKTIV HP range means the highest performance on a world-class level. It fea-tures dyes with a wide variation in brilliance to enable selection of the ideal dye for all ap-plications. All dyes are perfectly combinable and therefore ensure optimum production reliability in both exhaust and continuous dyeing processes. With the combination of elements it is possible to eliminate any

potentially occurring metamerism with exist-ing recipes, and there are therefore no ob-stacles for switching to high performance.

The dye range has the following outstand-ing features:• Perfect combinability due to even bath

exhaustion and fixation • High shade consistency in the event of

fluctuating production parameters• Excellent suitability for all processes• Tailing-free dyeing in the continuous

process

• Balanced dye migration ensures the best levelling and minimum double-sidedness, especially on emerised fabric

• No photochromism• High light fastness and perspiration light

fastness, especially in the shade-sensitive grey, brown and olive ranges

• Wide colour space coverage• High washing fastness

BRILLIANT COLOURS FOR UNIVERSAL APPLICATIONS

HIgH, COORDINATED LIgHT AND PERSPIRATION LIgHT FASTNESS

When exclusively using non-contrasting, generally dull dyes, limits are already reached with the illustrated shades, and the exact shade setting is sometimes no longer possible. With the BEZAKTIV HP dye range these shades can easily be achieved and can be dyed reliably with effective reproduc-tion. The wide colour range coverage means that even more brilliant colour shades are not a challenge. With the new supplemen-tary elements BEZAKTIV Brown HP-5R, BEZAKTIV grey HP-N and BEZAKTIV Olive HP-B, reproducibility and process reliability when dyeing particularly tricky shades can be increased even further.

blu

e –

yello

w

green – red

Colour space coverage

khaki grey olive

BeZaKTiV hP

Traditional 1

Traditional 2

Traditional 3

high performance ranges khaki grey olive

Alkaline perspiration light fastness

> lighT and PeRsPiRaTion lighT fasTness

The BEZAKTIV HP dye range is particularly able to demonstrate its strengths regarding light and perspiration light fastness with dull

––– BeZaKTiV hP ––– Traditional 3 ◆ khaki ◆ grey ◆ olive

and often dyed shades. The fastness level of the individual elements is coordinated so that the shade does not change.

> shade-in-shade colouR Build uP

The excellent reproducibility and transfera-bility from laboratory to production result from coordinated substantivity and reactivity of all elements of the BEZAKTIV HP dye

NO PHOTOCHROMISM:ADDITIONAL CUSTOMER BENEFITS

dyeing process with dosing of salt and alkali

Time in minutes

10 % salt 30 % salt 60 % salt 100 % na2co3 50 % naoh 50 % naoh

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8

0 15 30 45 60 75 90 105 120

0 10 20 30 40 50

80

60

40

20

0

1.2

1

0.8

0.6

0.4

0.2

0

Tem

per

atur

e in

°c

BEZA

KTIV

HP

rinse

d an

d so

aped

not r

inse

d an

d no

t soa

ped

Corresponding shade

range. This can be illus trated with a shade-in-shade colour build up during dosing of salt and alkali.

TERNARY: ROBUST AND RELIABLE

Photochromism

number of flashes

de

n BeZaKTiV yellow hP-nP n Reactive yellow/Traditional 1 n Reactive amber/Traditional 2 n Reactive yellow/Traditional 3 n c.i. Reactive orange 107

> no PhoTochRomism

Although photochromism is a reversible change in colour due to exposure to light, it is an unwanted factor and is normally not accepted. A number of golden-yellow dyes often have, however, a pronounced tendency to photochromism. For this reason golden-yellow elements are contained in

many ternaries which match red and blue due to their dyeing behaviour, but are pho-tochromic. BEZAKTIV Yellow HP-NP is photochromism-free. The diagram shows the change in shade during exposure of the dyed product to a number of light flashes.

COLOUR CONSISTENCY DURINg ALL PROCESSES

> colouR consisTencyVariations in the process parameters are the main cause for problems with reproducibility. Conventional dyes in a ternary respond individually to these process parameters.The BEZAKTIV HP dyes possess highest robustness towards these variations of parameters. Thus differences in hue and strength can be avoided. The following graphics illustrate the robustness of BEZAKTIV HP.

Total difference of shade (delta E)

1:8 l.r.

1:12 l.r.

– 10 % salt– 10 % alkali

+ 10 % alkali

– 15 min.

+ 15 min.

– 5 °c

+ 5 °c

+ 10 % salt

10 % overfill

20 % overfill

10 % underfill

20 % underfill

n BeZaKTiV hP n Traditional 1 n Traditional 3

> exhausTIn exhaust dyeing various process parame-ters can affect strength and/or shade of a dyeing, particularly filling level, liquor ratio, amount of salt and alkali as well as dyeing time and temperature.

> Pad dRy Pad sTeamAlso in the pad dry pad steam process a colour consistency is guaranteed which meets the highest requirements, even in the event of fluctuation of the steaming time, salt and lye concentration.

COLOUR CONSISTENCY DURINg ALL PROCESSES

> cold Pad BaTchDue to the optimally coordinated substan-tivity and reactivity, no shifts in shade occur due to tailing with the BEZAKTIV HP dye range. There is also no difference in shade between both sides of emerised fabric.

Tailing

colour at the beginning

shade variation

colour after consumption of 70 % of the padding liquor

dh: 0.31

dh: 0.33

Emerised fabric

smooth fabric side Rough fabric side

Total difference of shade (delta E)

+ 50 g/l salt

– 50 g/l salt– 1.5 ml/l naoh

+ 1.5 ml/l naoh + 15 s steaming

– 15 s steaming

n BeZaKTiV hP n Traditional 1 n Traditional 3

DYEINg METHODS

BEZAKTIV HP dyes are universal-application reactive dyes and can be used in exhaust, semi-continuous and continuous dye processes. BEZAKTIV HP dyes can be com-bined with BEZAKTIV V and BEZAKTIV S dyes.

> exhausT PRocess foR BeZaKTiV hP

The optimal dyeing temperature is 60 °C. BEZAKTIV HP dyes can be used both on exhaust machines (jet, overflow) and also on exhaust apparatus (cross-package or warp beam dyeing apparatus, beam dyeing appara-tus). The recommended auxiliaries and the correct application amounts are listed in the process descriptions. The application amounts of salt and alkali depend on the fabric, the amount of dyes and the liquor ratio.

A1.0 – 2.0 g/l saRaBid ldR / miP

1.0 – 2.0 g/l BiaVin BPa

10.0 – 90.0 g/l common salt or glauber’s salt

B x % BeZaKTiV dye

C5.0 – 10.0 g/l sodium carbonate

0 – 3.5 ml/l caustic soda solution 38 °Bé (add progressively within 45 min)

D 0.5 ml/l acetic acid 80 %, ph 7 – 8 during soaping

E 1.0 g/l coToBlanc sel

Temperature step process Process which is mainly used for dyeing on machines without a suitable dosing device. To prevent unlevelness the alkali should be added in portions. Furthermore this process can be used to improve the tone-in-tone dyeing of cotton/viscose blends.

A

1.0 – 2.0 g/l saRaBid ldR / miP



5.0 – 10.0 g/l sodium carbonate

x ml/l caustic soda solution 38 °Bé (add 20 % of the total quantity)

B y % BeZaKTiV dye

C z ml/l caustic soda solution 38 °Bé (add 80 % of the total quantity)



A B

0

0

10

20

30

40

50

60

70

80

90

100

20 40 60 80 100 120 140 160 180 200 220

Time in minutes

Tem

per

atur

e in

°c

C 45 – 60 minutes

E

D

Isothermal processUniversal procedure to obtain excellent reproducibility and levelness. If the dosage is monitored, sodium carbonate and caustic soda can be added simultaneously. With progressive alkali dosing a steady increasing fixing curve and therefore the best possible levelness is reached. In addition, premature hydrolysis of the dye is prevented. This means the highest possible colour yield.

0

0

10

20

30

40

50

60

70

80

90

100

20 40 60 80 100 120 140 160 180 200 220

Time in minutes

Tem

per

atur

e in

°c

A B C 45 – 60 minutes

E

D

A1.0 – 2.0 g/l saRaBid ldR



B x % BeZaKTiV dye

C5.0 – 10.0 g/l sodium carbonate

0 – 3.5 ml/l caustic soda solution 38 °Bé (add progressively within 45 min) or 0 – 7.0 ml/l egasol as new



salt- and alkali requirement for BEZAKTIV HP dyes

For unmercerised cotton in liquor ratio 1:8 – 1:12

alkali mixture only soda ash

% dyestuff salt g/l soda ash g/lcaustic soda

solution 38 °Bé ml/lsoda ash g/l

< 0.1 % 10 5 – 5

0.1 – 0.5 % 20 10 – 10

0.5 – 1.0 % 30 5 1.0 15

1.0 – 2.0 % 40 5 1.5 15

2.0 – 4.0 % 60 5 2.0 20

4.0 – 6.0 % 80 5 3.0 25

> 6.0 % 90 5 3.5 25

For mercerised cotton and viscose in liquor ratio 1:8 – 1:12

alkali mixture only soda ash

% dyestuff salt g/l soda ash g/lcaustic soda

solution 38 °Bé ml/lsoda ash g/l

< 0.1 % 10 5 – 5

0.1 – 0.5 % 15 7.5 – 7.5

0.5 – 1.0 % 20 5 0.8 10

1.0 – 2.0 % 30 5 1.1 15

2.0 – 4.0 % 40 5 1.5 15

4.0 – 6.0 % 60 5 2.0 20

> 6.0 % 70 5 2.0 25

liquor ratio Factor

Conversion factors to determine the alkali requirements depending on the liquor ratio

1:51:101:151:20

1.301.000.800.65

liquor ratio Factor

Conversion factors to determine the salt requirements depending on the liquor ratio

1:51:101:151:20

– 10 g/l salt– standard

+ 10 g/l salt+ 20 g/l salt

Migration step process 80/60 °CProcess for articles with which level dyeing is very difficult and for critical shades such as grey, khaki or beige. Excellent dye penetration and levelness, especially on dense yarn packages or cross-bobbins. With difficult light or medium colours, salt dosing is also possible after the dye has been added. glauber’s salt is preferable to common salt for this process.

B

C

0

0

10

20

30

40

50

60

70

80

90

100

20 40 60 80 100 120 140 160 180 200 220 240 260 280

Time in minutes

Tem

per

atur

e in

°c

A

E

D

45 – 60 minutes

g/l BeZaKTiV dye

ml/

l cau

stic

so

da

solu

tio

n 32

.5 %

(38

°B

é)

40

35

30

25

20

15

10

0 20 30 40 50 60 70 80 90 100

Alkali concentration for the reduced sodium silicate process:

Technical application notes for dyeing according to the CPB process

dye designationfibre

affinityliquor

stabilityfixation speed

minimum fixing time

BeZaKTiV yellow hP-nP medium medium medium 12 hours

BeZaKTiV Red hP-Bl medium medium medium 8 hours

BeZaKTiV Red hP-3B medium medium medium 8 hours

BeZaKTiV Blue hP-R medium medium medium 8 hours

BeZaKTiV olive hP-B medium medium medium 12 hours

BeZaKTiV Brown hP-5R medium high medium 16 hours

BeZaKTiV grey hP-n medium medium medium 12 hours

Table information: The given dye specifications were deter-mined with use of the reduced sodium silicate method (50 ml/l) and caustic soda solution 38 °Bé with a dye application amount of 30 g/l at a padding temperature of 25 °C and a dwelling temperature of 25 °C.

> semi-conTinuous PRocess

Woven and knitted fabric made of cellulose or regenerated cellulose can be dyed very economically with the cold pad batch (CPB) process with BEZAKTIV HP dyes. When BEZAKTIV HP dyes are combined with BEZAKTIV V or S it should be ensured that dyes with the same dyeing properties such as fibre affinity, liquor stability and fixing speed should be used. This information is given in the respective tables. To prevent tailing during padding, a high liquor exchange should be ensured. With lightweight fabrics dyeing should be performed with a low trough level and a high running speed. A low liquor stability can result in tailing. To ensure a high liquor stability it is highly recommended that the temperature of the padding liquor is not higher than 25 °C. Dye and alkali solution with a 4:1 ratio are combined just before the padder with a mixing pump or doser and added to the dye trough. The application amounts of dye, auxiliaries and fixing alkalis are based on the overall volume of the padding liquor. It is important that the fabrics have been cooled properly before padding to ensure reproducibility. If the fabric tempera-ture is too high, the liquor stability is lowered which results in a change of colour or its depth. A constant production speed should generally be ensured. Different speeds influence the liquor pick-up and result in tailing. During dyeing the fabric is rolled with a straight line fabric. In order to ensure optimum fixation of the dye, the dyed goods must be packed with an air-tight plastic film and left for a certain time at room tempera-ture. Packing the goods with an airtight package prevents carbon dioxide from the air partially neutralizing the fixing alkali. When dyeing with several dyes the dwelling time of the dye with the longest dwelling time should be taken.

Cold pad batch process with reduced sodium silicate quantityThe reduced silicate version is the standard version and has a high pad liquor stability in the temperature range of 20 – 30 °C. The application amount of sodium silicate 38 °Bé is generally 50 ml/l. Addition of the dye with the fixing alkali is performed with a mixing pump with a ratio of 4:1. Silicate de-posits can occur on the rollers if silicate is used. Furthermore the use of sodium silicate during the soaping process requires an in-tensive washing process before neutraliza-tion to prevent silicate precipitation.

Dye solution: x g/l BEZAKTIV HP dye 0 – 100 g/l Urea 1 – 3 g/l COLORCONTIN SAN

Alkali solution: 50 ml/l Sodium silicate 38 °Bé y ml/l Caustic soda solution

32.5 % (38 °Bé)

Mixing ratio: The stated quantities g/l of dye, ml/l of sodi-um silicate and ml/l of caustic soda solution 32.5 % (38 °Bé) are based on the total vol-ume of the padding liquor. Dye and alkali solution are combined with a mixing pump with a normal mixing ratio of 4:1 and form the total padding liquor volume.

Padding liquor temperature:20 – 25 °C

Dwelling time:12 – 24 hours, up to 40 hours no colour losses or shifts in shade occur.

Fibre affinity:The fibre affinity was determined by adding alkali and characterises the specific exhaus-tion properties of a dye. To counter tailing problems, the use of dyes with the same fibre affinity is advantageous.

Padding liquor stability:The padding liquor stability is given in minutes. A period of time for hydrolysis of 10 % of the employed dye is determined. This theoretical value cannot be implemented directly in practice, as the dye and alkali solution are constantly added to the trough. For this reason the actual value of the liquor replacement in the trough should not exceed three minutes. The values of the BEZAKTIV HP dyes were determined at a temperature of 25 °C and with the use of the reduced sodium silicate variant. A higher temperature and different alkali systems influence the liquor stability.

The BEZAKTIV dyes are categorised as follows:Low < 10 minutesMedium 10 – 20 minutesHigh > 20 minutes

Fixation speed:The speed of fixation depends greatly on the dwelling temperature. A regular temperature of the dyed fabric, liquor and environment is a requirement for regular fixation. The stated values of the BEZAKTIV HP dyes are based on an ambient temperature of 25 °C during dwelling. If the ambient temperature is lower, the dye is fixed more slowly. For this reason it is necessary to adapt the dwelling time accordingly.

Slow > 16 hoursMedium 8 – 16 hoursFast < 8 hours

> conTinuous dyeing PRocess

Pad dry pad steam processThe pad dry pad steam process is the classic continuous process for dyeing woven fabrics. It is primarily used for cellulose articles with a high yardage. This process is characterised by a high productivity, a good fabric appearance as well as a good colour yield. The use of a dosing pump is not necessary with this process.

Dye pad: x g/l BEZAKTIV HP dye 1.0 – 3.0 g/l COLORCONTIN SAN 1.0 – 5.0 g/l MEROPAN XRN PEARLS 5.0 – 10.0 g/l MIgRASOL SAP

Pick up: 60 – 80 %

Padding temperature: 20 – 30 °C

Pre-drying to a residual moisture content of 30 – 35 % in the IR zone

Drying: 110 – 120 °C

Padding of chemicals: 250 g/l Common salt 20 g/l Sodium carbonate7.5 – 15 g/l Caustic soda solution 38 °Bé

Pick up: 80 – 100 %


Fixation: Steaming with 102 °C saturated steam for 60 – 90 seconds.

Alkali requirements

dye g/l < 20 20 – 40 > 40

caustic soda solution 38 °Bé ml/l 7.5 10 15

Remarks:Regular pre-drying is necessary to ensure optimum reproducibility and a level fabric appearance.

Pad dry thermofix processThe pad dry thermofix process is a single-bath and salt-free continuous process. Particularly suitable for light to medium shades. A lower light fastness level is achieved than with the pad dry pad steam process. No dosing pump is required for this process. Fixation is performed with hot air. Sodium bicarbonate is recommended as a fixing alkali, because of higher liquor stability than sodium carbonate.

Dye pad: x g/l BEZAKTIV HP dyes 1.0 – 3.0 g/l COLORCONTIN SAN 1.0 – 5.0 g/l MEROPAN XRN PEARLS 5.0 – 10.0 g/l MIgRASOL SAP 0 – 150 g/l Urea x g/l Sodium bicarbonate

Pick up: 60 – 80 %


Pre-drying to a residual moisture content of 30 – 35 % in the IR zone

Drying: 110 – 120 °C

Thermofixation: 60 – 180 seconds at 150 °C

Alkali requirements (sodium bicarbonate)

dye g/l 5 10 20 30 > 30

sodium bicarbonate g/l 10 15 20 25 30

Remarks:Regular pre-drying is necessary to ensure optimum reproducibility and a level fabric appearance. The dyes should be preselected due to the specific conditions during thermofixation.

LightSolubility

25 °C

in g/l

Washing

°C

Perspiration

CCCOCV

4-54-54-5

555

4-555

4-55

4-5

4-54-54-5

4-54-54-5

4-54-54-5

4-544

4-54-54-5

4-54-54-5

4-54

4-5

4-544

43-44-5

4-54

4-5

CCCOPA

555

555

4-555

4-555

555

55

4-5

555

CCCOPA

555

4-555

555

4-555

55

4-5

54-54-5

555

CCCOPA

4-555

4-555

4-555

4-555

55

4-5

54-54-5

4-55

4-5

CC

3-4

1

3-4

2-3

1-2

4

2

CC

4-5

3

4-5

3

2-3

4-5

3-4

1/11/25

–

+

–

(+)

+

+

–

+

–

+

–

+

–

+

CPB

°C

+

60

+

60

+

60

+

60

+

60

+

60

+

60

–

–

–

+

+

–

+

Chlo

rine

was

hing

Chlo

rina

ted

wat

er

Disc

harg

eabi

lity

Suita

bilit

y fo

r CP

BEx

haus

tion

tem

p.

Met

al c

ompl

ex

Water

alkal.

neutral

100

100

100

100

100

80

100

CPB

100

100

100

100

100

50

100

100

1/11/25

6-76

65-6

5-64-5

6-76

65-6

5-65

65-6

BEzaktiv Yellow HP-NP

BEzaktiv Red HP-BL

BEzaktiv Red HP-3B

BEzaktiv Blue HP-R

BEzaktiv Olive HP-B

BEzaktiv Brown HP-5R

BEzaktiv Grey HP-N

0.55 % 3.3 %

0.42 % 2.5 %

0.55 % 3.3 %

0.50 % 3.0 %

0.55 % 3.3 %

BEzAktiv HPDyes

HiGH PERFORMaNCERanges of top products and specialities offering stateof the art technology and meeting the highest demands.

GOTS 3.0 suitability

HPacid

60

20 ppm

95

data about fastness properties:The fastness properties indicated in this shade card were determined on 1/1 standard depth dyeings on bleached mercerised cotton.Fastness to light DIN EN ISO 105-B02Fastness to washing at 60 °C DIN EN ISO 105-C06/C2SFastness to washing at 95 °C DIN EN ISO 105-C06/E2S

Fastness to water DIN EN ISO 105-E01Fastness to perspiration DIN EN ISO 105-E04Fastness to washing with hypochlorite DIN EN ISO 105-C06/D3SFastness to chlorinated water (swimming pool water) DIN EN ISO 105-E03

Dischargeability + suitable for white discharge (+) suitable for coloured discharge – not dischargeable

0.33 % 2.0 %

0.60 % 3.6 %

Documents

dachcom - CHT Gruppe - Spezialchemikalienfile/... · tivity and reactivity, no shifts in shade occur due to tailing with the BEZAKTIV HP dye range. There is also no difference in