Fluorescent brightener 220 Liquid is especially suitable for whitening and brightening knitted cotton fabrics. FBA220 introduces multiple water-soluble groups in its structure, which not only has good water solubility, but also has good perspiration fastness and acid resistance. Even when the PH is 3-4, it still has a good whitening effect on cellulose fibers.
Since the whitening agent is liquid, it is not as difficult to solvent as the powdery whitening agent, and there is no dust pollution. It only needs to weigh a certain amount according to the whiteness requirement and dilute it with water in any proportion
Other Name:
Fluorescent Brightener NT-3,Fluorescent Brightening Agent NT-3, Optical Brightening Agent NT-3,Fluorescent Whitening Agent NT-3,OBA NT-3
Applications:
- This product is especially suitable for whitening and brightening paper pulp,knitted goods and cotton fabrics.
- The whitening effect of VBL will decrease remarkably when the PH value is lower than 6,while NT-3,since more water-soluble groups have been introduced into its structure,does not only have a very good water solubility,but also has a much higher resistance to acid,and thus has a very good whitening effect on cellulose fiber even if the PH value is only 3-4.
Technical Specifications
- C.I. No.: Fluorescent brightener 220
- Physical Form: amber clear viscous liquid
- Structure:a compound of diphenylethylene triazine type
- Ionicity:anionic
- Resistance to acid and alkali:suitable for PH2-12
- Solubility:soluble in water in any ratio.
Directions for use and dosage:
- Since NT-3 is a liquid,not so hard to dissolve as VBL and will not cause dust pollution,it is only necessary to weigh out it according to the whitenes required and dilute it in water in any ratio.The dosage recommended is as follow:1)For whitening paper pulp:3-10‰ on weight of dry paper pulp.2)For whitening knitted goods:
- 4-8g/l when using paddyeing process,and if 2-4g anhydrous sodium sulfate is added in the padding bath,the whiteness of fabric will be greatly increased.0.4-1.2% O.W.F..when using dipdyeing process.
