Optical Brightener ER-1
Structural formula
C.I:199
CAS NO. :13001-39-3
Appearance: light yellow powder
Purity: ≥99%
Melting point: 230-232℃
Feature
It is of the stilbene benzene type and is easily soluble in many organic solvents. Stable to cationic softener. The light fastness is S grade and the washing fastness is excellent. It can be used in the same bath with sodium hypochlorite, hydrogen peroxide and reducing bleach. The product is a light yellow-green dispersion which is non-ionic. It is obtained from the condensation of terephthalaldehyde and o-cyanobenzyl phosphonic acid one (), (7' one' ethyl ester [} R 2-(diethoxy phthalomethyl) benzonitrile].
Application: It is mainly used for whitening polyester, acetate, nylon, etc. Good whiteness for both dip dyeing and pad dyeing. The effect of whitening polyester by low-temperature adsorption and fixing method is also very good.
Instructions
Add the optical brightener ER-1 fine powder together with polyester chips and other additives into the blender. The recommended dosage is 0.02-0.08% (to the polyester weight ratio). The specific dosage can be determined according to the whiteness requirements of the finished product. , Mix well at 50-150℃.
Package
25kg fiber drum，with PE bag inside or as customer’s request.
Shelf life
2 years.
