Fluorescent Brightener 134

Fluorescent Whitening Agent 134 is a derivative of the diphenylethylene bistriazine type,chemically called 4,4'-bis[(6-anilino-4-methoxy-1,3,5-triazin-2-yl)amino]diphenylethylene-2,2'-sodium disulfonate and similar to Uvitex PRS,Whitex BF and Blankophor BBH made in foreign countries.It is a light yellow powder,soluble in water,resistant to acid,resistant to hydrogen peroxide bleaching,and has a high direct effect on bleaching paper pulp.

Other Name:

Fluorescent Brightener 134,Fluorescent Brightening Agent 134, Optical Brightening Agent 134,Fluorescent Whitening Agent 134,OBA 134

Applications:

• ‍Fluorescent Brightener 134 is more adaptable than VBL due to its higher resistance to acid.
• It can be used in slightly acidic medium for whitening silk fabric,animal fiber,nylon fabric and polyamide fiber,and can be used in peroxide or reduction bleaching bath.
• It also has an excellent whitening effect on cotton fabric,viscose fiber,Jinglun,paper and washing powder.‍

Technical Specifications

• ‍C.I. No.: Fluorescent brightener 134
• Physical Form: light yellow even-sized powder
• Whitening intensity:100%
• Hue:slightly different from the standard agent
• WCIE (whiteness difference between PRS 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%‍

Treatmenting Process:

exhausting whitening process: CF-90: 0.05-0.3% (o.w.f.), bath ratio: 1:5-30, dyeing temperature: 40°C -100°C; Na2SO4:0-10g/l.,start temperature :30°C , heating rate:1-2°C /min, keep the temperature at 50-100℃ for 20-40min, then lower to 50-30°C --> wash--> dry( 100°C ) --> setting (120°C -150°C )×1-2 min( add proper amount leveling agent according to the leveling effect).

Directions for use and dosage:

It should be added in process of paper-making or dyeing & printing with a dosage of 0.2-0.5% on weight of the material to be whitened.