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Optical Whitening Agents for Textiles
We are manufacturer of OBA for Textiles
Optical Whitening Agents for Textiles
We are manufacturer of OBA for Textiles
Optical Whitening Agents for Textiles
We are manufacturer of OBA for Textiles
Optical Whitening Agents for Papers
We are manufacturer of OBA for Paper
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VIOPHOR BSB LIQ

liquid

VIOPHOR BSB LIQUID (IN TEXTILE)

BSB LIQUID is a high substantive Optical Whitening Agent for natural and regenerated fibers, particularly suitable for the exhaustion method.

 

Properties:

Chemistry : Derivative of Stilbene Disulphonic Acid

 

Appearance : Reddish Brown Liquid

 

Ionic Nature : Anionic

 

Shade : Blueish to Neutral White

 

Solubility : Soluble in all proportions

 

Substantively : High

 

pH (I & aq soln) : 8.5 – 9.0

It is insensitive to medium hard water (approx. 15 Degree German)

 

Stability:

IN SOLUTION ON THE FIBRE

Peroxide Very Good Very Good

Hydrosulphite Very Good Very Good

Chlorine Not Stable Good

Acids Not stable under pH 5 Not stable under pH 5

Alkalis Very Good Very Good

Fastness: Light 3 – 4

Washing 5

 

Applications:

Application on Cellulose

(a) Winch or Jet Bleaching Hydrogen Peroxide 50% 8mls/liter

Caustic Soda 0.5 gpl

Organis Stabilizer 1 – 2 gpl

Wetting Agent As required

BSB POWDER 0.22 – 0.4% on wt. of

fabric

 

(b) Jig Bleaching Hydrogen Peroxide 50% 3 – 5 %

Caustic Soda 1 – 1.5 %

Organis Stabilizer 1 – 1.5 %

Wetting Agent As required

BSB POWDER 0.22 – 0.4%

 

(c) Package Bleaching Hydrogen Peroxide 50% 13 mls/liter

Caustic Soda 0.5 gpl

Organis Stabilizer 1 – 2 gpl

Wetting Agent As required

BSB POWDER 0.22-0.4% on wt. of fabric

 

In each case the bleach is normally carried out @ 100 Degree C for approximately one hour.

 

2. Application on Polyester/Cotton with Blends The bleaching of Polyester/Cotton Blend is generally carried out bleach liquors similar to those used for 100% cotton fabrics as detailed in section 1.
3. Application on Polyester/Cotton with Blends BSB Liquid can be used to obtain solid whites on bleached cotton/Polyamide blends by application from stabilized hydros at 100°C at 6-7 pH for half an hour.
4. Application on Polyester/Cotton Blends Application Polyamide Although BSB Liquid is application to nylon from a slightly acidic bath at pH 5.5 at a temperature of 100° C, preferred method of application is as follows.
               BSB POWDER             0.5-1.2% on wt. of goods               Stabilized hydros          1 – 3 gpl               Temp                             90-100° C               Time                             30 minutes

 

Note:

(i) Dilute solutions must not be exposed to natural light

 

(ii) Do not use cationic auxiliaries

 

(iii) Heavy metal ions may interface with the effect of anionic Optical Brighteners. This can be avoided by adding suitable chelating agents




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