Optical Brightener CLE for Nylon and Cotton

Chemical Name: Hydrazine sulfonate derivatives

Molecular Formula: C30H20N6Na2O6S2

Molecular Weight: 670.62594

CAS NO: 23743-28-4

Specification

Appearance:Brown liquid

Ion:Anionic

Dyeing shade:Netural

E1/1 Value: 93-97

UV Strength (%):95-105

PH: 4.5-5

Applications: 

It’s suitable for Optical Brightening Agent for nylon and cotton. Its high light fastness is over 5 grade. It’s for exhaustion and padding process. The quality is counter of Blankophor CLE (Bayer).

Usage

1. Exhaustion process for nylon:

A.Na2SO4 bath:

Dosage: CLE 0.5-1.5% o.w.f; Detergent: 0.5-1.0 g/l; Na2SO4:2-3g/l; Acetic acid adjusted PH=4-6; Temperature: 80-130℃; Time:20-30min;

Sodium Chorite bath:

Dosage: CLE 0.5-1.5% o.w.f; Detergent: 0.5-1.0 g/l; NaNO3:2-3 g/l; Sodium chlorite:3-8g/l;Complexing agent: 0.5-1.0g/l; Temperature: 90℃; Time:30-40min;

2. Padding process for nylon:

Dosage: CLE  8-30 g/leveling agent: 1-2 g/l; Fixing agent:

5-10 g/temperature: 20-60℃; Dip squeeze: pick up 80-100%, baking under 105℃.

3. Dyething method for cotton:

Dosage: H2O2 50% or 35% g/l, stabilizer 1g/l, NAOH 98% 0.6g/l, Bath rate: 20.

Detailed process is according to customer’s request.

Package and Storage

1. 25KG drum

2. Store the product in a cool, dry, well-ventilated area away from incompatible materials.