CAMEX 'wonder' Reactive dyes are modified hetero bi-functional reactive dyes. These dyes are characterized with high tinctorial value, good all round fastness and better exhaustion and fixation values. The main features of Camex wonder series are Excellent self life Excellent levelling and reproducibility in dyeing. Good brilliancy of shades. Difference between percentage exhaustion and fixation is very less and hence less effluent problems and hence eco-friendly. Exhibits excellent alkali and acid stability. During dyeing processes these dyes are less sensitive to varying M: L: R, dyeing temperature, salt and alkali concentration and hence are robust. These dyes can be used for dyeing as well as for printing. Different Dyeing Methods:   (1) Isothermal Dyeing Method   Diagram not to scale Back to Top   Minutes   Raise temperature At 40°c   Load machine, run liquor and / or fabric. Ensure that pH is below 7. Adjust with acetic acid if necessary   05 Add Salt Raise temperature To 60°c @ 3 °c per minute 05 continue dyeing at 60°c   10-15 controlled dye addition   30 continue dyeing at 60°c   15-20 Controlled alkali addition   45-75 Dye at 60°c     Check Shade   (2) Exhaust Dyeing Method   Diagram not to scale     Minutes   Raise temperature to 40°c   Load machine, run liquor and / or fabric. Ensure that pH is below 7. Adjust with acetic acid if necessary   05 add predissolved Dye   10 continue dyeing   02 add 5 g/l Salt Raise temperature to 60°c@ 1 °c / min. while 10 continue dyeing   03 add 20 g/l Salt The salt is being added   10 Continue dyeing   05 add remaining Salt   15 continue dyeing at 60° c to allow a uniform temperature to be achived Throughout the machine. Allow 15 minute after the last salt addition if salt is still being added when the temperature reaches 60°c   15 Add Soda Ash Slowly   45-75 dye at 60° c     Check Shade   Depth of shade 0% on weight of goods Salt GPL Soda Ash GPL up to 0.5 30 10 0.51-1.0 45 15 1.01-2.0 60 15 2.01-4.0 70 20 Above 4.0 90 20   Notes : Soda ash alone is always the preferred alkali, But in order to reduce the amount of handling needed, a mixture of Soda and Caustic Soda, or a Formulated liquid alkali may be used for fixation of the dyes. Winch Dyeing : Winches are mainly used for dyeing knitted and delicate woven fabrics. In this method dyestuff solution is added over a period of 15 minutes and goods are run at 40° C. salt addition in then followed at same temperature and goods are run for 10-15 minutes. After running the goods properly in dyes and salt, alkali is added within 10-15 minutes and required temperature is attained and goods are run for 60-90 minutes. Depending depth of shade. It is very important to add chemicals and dyestuff slowly as there are chances to get unevenness during dyeing since the fabric is in rope form. Finally fabric is washed soaped, washed and dried. Back to Top Winch Dyeing Machine     Jigger Dyeing Load the goods on jigger   1 end Set dyebath at room temp, with required water + 0.5-1 g/l Camasequest N - 1 end Add half the dye solution & run the fabric - 1 end Add remaining half dye solution & run the fabric - 1 end Start raising the temp. & add 10% amount of the total salt in 2 ends - 2 ends Add 30% of total salt in 2 ends - 2 ends Add remaining salt in 2 ends - 2 ends At 60° C run the fabric - 2 ends Add soda at 60° C 1/2 the amount - 1 end Add remaining half amount of soda & run the fabric - 1 end At 60° C run the fabric - 4 end Cold ash - 2 ends Hot wash - 2 ends Soaping at boil - 2 ends Hot wash - 2 ends Cold water - 2 ends Total - 28 ends In case of dark shades salt can be added portion wise. Back to Top Jigger Dyeing Machine   Padding with CAMEX Wonder Reactive Dyes   Pad - Dry - Steam Method   Padding Recipe:   Camex Wonder dyes - 10-70 g/l Urea - 50-100 g/l Resist Salt - 10 g/l Soda ash (Alkali) - As per table Wetting agent - 1 - 3 g/l Alkali requirement Dyestuff g/l - Soda ash g/l 0-15 - 6 15-30 - 9 Above 30 - 12   Process : The fabric is first padded at room temperature with 70 - 80 % expression and dried. The dried material is then steamed in a continuous steamer for 7 - 10 minutes at 100 - 105°C and then washed and dried. Before steaming the fabric must be completely dry otherwise patched or unevenness may be observed.   Pad - Dry - Steam Method   Printing with CAMEX Wonder Reactive Dyes   Steaming Method : Printing Paste Recipe   CAMEX Wonder dyestuff is mixed with - X Part Urea - 20-50 Parts Water - 200 Parts Thickening (Sodium Alginate 4%) - 500 Parts Sodium Bi-carbonate - 20 Parts Resist Salt - 10 Parts Water or Thickening (As per required Viscosity) And bulk to - Y Parts Total - 1000 Parts   Print - Dry - Steam at 105° C for 12 -15 minutes - Hot and Cold Wash - Soap at boil for 15 -20 minutes followed by rinse hot & cold wash.   Washing of process   In order to achieve maximum fastness properties a proper wash off is essential for the dyed and printed goods.     Minutes   15 Rinse at 50° C 15-20 Rinse at 60-70 10 Neutralization with acetic acid PH-6.5-7.5 15-20 Soap at the boil. For Very heavy depth shades soaping required twice. 10 Rinse at 80° C 10 Rinse at 70° C   Rinse Cold until clear solution is obtained.   For medium to heavy shades an after treatment with 1 - 2 g/l dye fixing agent is given at room temperature (40° C at acidic pH of 5 - 5.5 to improve fastness properties.)       YELLOW WGL     G. YELLOW WRL     G. YELLOW W2RN     ORANGE W2RL     RED WBX     RED WCR     RED WRR     BLUE WCA     BLUE WGL     NAVY BLUE WBF Back to Top