Optical brightener ERII-L

C.I. No.: 199:1

CAS No.: 13001-38-2

Main ingredient: stilbene derivative

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Description

Description

Optical brightener ERII-L for polyester whitening

 

C.I. No.: 199:1

CAS No.: 13001-38-2

Main ingredient: stilbene derivative

 

Specification

Appearance Light yellow dispersion
Ionicity Non-ionic
Shade Blue
Solubility Dispersible in water
PH (1% aq.sol.) 5.0-7.0
Alternative Ultraphor SFN/SFG (BASF); Hostalux ETBN; Uvitex EMT (Hunstman)

 

Characteristics

High whiteness and fluorescence, excellent fastness to light, wash and sublimation.

 

Application

For whitening and brightening of polyester and polyester-blended fabrics.

For operation under high, medium or low temperature.

 

Usage

Pad-dyeing hot-melt method

Rate of use: 1-3g/L

Process: two-bath two-pad ( pick-up rate 70%) → pre-baking (100℃)→baking (180-200℃, 20-30s)

Note: scouring is needed, in case remain alkali on fabric

 

High-temperature exhaust dyeing

ERII-L rate of use: 0.2-0.3% ( o.w.f); bath ratio: 1:10-30;

Process: 120-130℃, 30-60min → wash → parch →finalize

 

Package & storage

Plastic barrel, n.w. 25kg or 50kg.

Shelf life: 6months at room temperature in closed containers.