Optical Brightening Agents 4BK
1>Shade:red,blue,violet
2>Hight whiteness&brightness
3>Textile:cotton/polyester fabrics
Product name: Optical Brightening Agents 4BK
Main ingredient:
Stilbene derivative
Specification
| Appearance | Light yellow powder |
| Ionicity | Anionic |
| Water insoluble | ≤0.5% |
| Water | ≤5% |
| Fineness(180mesh) | ≤10% |
Characteristics:
High whiteness and brightness. Shade can be shift to red, blue, violet according to clients' request. stable chemical properties.
Excellent fastness to acid perborate and peroxide.
Application:
For whitening of cotton and cotton/polyester fabrics.
Usage:
Exhaust dyeing method
Rate of use: 0.1-0.8%(o.w.f), bath ratio: 1:10-30
Process: 90-100°C×30-40min→wash→bake.
One-bath method
Rate of use: 0.2-0.8%(o.w.f), hydrogen peroxide: 5-15g/L
Bleaching assistant: 0.5-2g/L, NaOH: 1-5g/L
Scouring agent:0.5-1g/L, bath ratio: 1:10-30
Process: 90-100°C×30-40min→wash→bake.
Packaging & Storage:
25kg or 50kg iron drum or paper drum lined in plastic bag, transport as non-hazardous
We are one of the main supplier of Optical Brightening Agents 4BK in China.
