Fluorescent Whitening Agent VBU,also called acid-resistant Whitening Agent VBU,is a derivative of the diphenylethylene bistriazine.
It has an appearance of light yellow powder,a nature of anion and an acid-and alkali-resistance of PH 2-10.
This shitening agent can be used in a bath together with anionic or non-ionic surfacant,anionic dyes and synthetic resin.
Other Name:
Fluorescent Brightener VBU,Fluorescent Brightening Agent VBU, Optical Brightening Agent VBU,Fluorescent Whitening Agent VBU,OBA VBU
Applications:
- Having a rather strong acid-and chlorine-resistance,VBU is mainly used for whiteing while cotton or viscose products and suitable for one-bath whitening of cotton fabric in resin finishing liquor.
- It can be used for whitening knitted undershirts to prevent them from being yellowed by sweat stain.
Technical Specifications
- C.I. No.: Fluorescent brightener VBU
- Physical Form: light yellow even-sized powder
- Whitening intensity:equivalent to the 100 points of the standard agent
- Hue:slightly different from the standard agent
- WCIE(whiteness different between VBU and the standard agent):≥-3.0
- Moisture content:≤5%
- Content of insoluble impurities:≤0.5%
- Fineness (quantity of residue on sieve having 180um meshes):≤10%
