Fluorescent whitening agent EBF
C.I.185 CAS:2866 - 43 - 5
Structure:
Chemical name: 2,5 - Bis(benzoxazol - 2 - yl)thiophene
Chemical formula: C18H10N2O2S
Molecular weight: 318 (As International relative Atom Mass 1997)
Implementation standard: Q/LQH009 - 2003
Performance indicators:
Item | Indicator |
Appearance | Ivory - white dispersion |
Shade | Blue light |
Ionicity | Anionic |
Performance characteristics:
Suitable for whitening and brightening treatment of polyester and its blended fabrics. It is suitable for both exhaustion dyeing and pad dyeing processes. It has excellent light fastness properties, up to7 - 8 grades. It has good stability against acids/alkalis, hard water, peroxides and hypochlorite compounds. It is very suitable for alkaline discharge printing processing technology.
Usage method:
1. High - temperature exhaustion dyeing process
Formula: Fluorescent whitening agentEBF - L 0.1 - 1.0% o.w.f Dispersant 0.5 - 1g/l Acetic acid to adjust PH = 4.5 - 5.5
Process:120 - 130℃ 20 - 40 minutes
2. Continuous pad dyeing process
Formula: Fluorescent whitening agentEBF - L 2 - 10g/l Other auxiliaries
Process:180 - 185℃ 30 seconds Padding rate: 60 - 100%
3. One - step resin finishing process
Formula: Fluorescent whitening agentEBF - L 1 - 10g/l Silicone softener 10 - 40g/l Resin, resin catalyst
Process: Drying 130℃ 1 minute Padding rate: 40 - 60% Fixation: 160 - 185℃ 2 - 3 minutes
Packaging:
Packed in 25kg plastic drums. Can be customized according to customer requirements.
Storage:
Store in a cool, dry place away from light.
Precautions:
1. This product must be fully stirred evenly before use to ensure the consistency of whiteness and shade of the processed fabric.
2. Fabrics bleached by oxygen must be thoroughly washed to remove the residual alkali on the fabric before whitening to ensure that the whitening agent can color fully and the shade is bright.
3. This product is a high - temperature type polyester fluorescent whitening agent. The dyeing temperature and setting temperature must meet the above process requirements to ensure the normal color development of the fluorescent whitening agent. If normal - temperature boiling is required, the carrier dyeing method can be used.
