Optical Brightener for Polyester
Americos White R LiquidIntroduction
Americos White R Liquid is optical brightening agent for polyester fabrics. It gives brilliant whitening effect, which has good fastness to sublimation, light and wet processing. It can be applied by high temperature exhaust or thermosol method.
The advantages of Americos White R Liquid are :
- It gives brilliant whitening effect
- The whitening effect shows good fastness to sublimation, light and wet processing
- It can be applied by high temperature exhaust or thermosol method
- It is suitable for whitening effect on textured polyester and polyester/cotton
|Appearance||greenish yellow liquid|
|Solubility||Diluted to any desired concentration|
|Application pH||4.5 - 5.5|
Americos White R can by applied on fabric by exhaust as well as thermosol method.
(1) Exhaust Method (Jet Dyeing Machine)
|Americos White R||: 0.1-0.3 % (on weight of fabric)|
|Dispersing agent||: 1 gm/ltr.|
|Material to ratio||: 1:10|
The material is entered at about 50º C and the temperature is slowly raised to 130º C within 45-60 minutes. The treatment is continued at this temperature for about 30-45 minutes. The material is then washed in cold water and soaped at 60º-70º C for 10-15 minutes in 2 gm/ltr. neutral detergent.
(2) Pad-Thermosol Method
The fabric is padded through a pad-liquor containing 1-5 gm/ltr. Americos White R Liquid keeping 60-80% pick up. The padded fabric is dried at approximately 120º-140º C. Heavy or densely woven fabric requires higher fixation temperature or longer fixation time than lighter fabric with open weave.
Storage & handling precautions
- For normal Polyester and Polyester/Cotton: 180ºC - 185ºC. for 10-15 seconds.
- For textured Polyester: 170ºC - 180ºC
- The thermo-fixed material may be given rinsing and light soaping treatment with 2 gm/ltr. neutral detergent at 60ºC - 70ºC. for 10 -15 minutes.
- Store in cool place.
- Avoid storing in direct sunlight Americos White R should be stored at ambient temperatures.
- Do not allow freezing. If this product is stored for longer period, it is advisable to mix product well before its uses.
- The self-life of Americos White R is one year if stored temperature below 40ºC.
- The usual precaution in keeping chemicals away from eyes and skin should be observed.
(The information and data contained herein are based on controlled lab work. The recommendations are given on experience basis, but cannot be extended to assure every possible case. It should be verified and evaluated by the user through proper testing for the intended conditions of application. Americos does not express or imply any warranty, or guarantee the suitability of the product for the application intended by buyer of the product).