ESTO-PVP

ESTO-PVP | Concentrated product, prevents cross-staining of dyes

Product Information

Esto-PVP is a concentrated product to avoid cross-staining of dyes in washing-off of dyed and printed substrates. Esto-PVP can be used in batch as well as in continous operation. During washing-off, Esto-PVP forms weak complex with anionic dyes which is kept in dispersion throughout washing process and prevents re-deposition thereby cross-staining is avoided. Due to its good rinseability, Esto-PVP is easily washed-off and does not interfere in subsequent dyefixing or softening. Esto-PVP can be used against conventional washing off agents. It is also recommended for stripping of vat and sulphur dyes.

Key Features & Benefits
Key Features
Benefits
Concentrated powder product
Reduced freight cost
Good dispersing action

Prevents re-deposition and cross staining during washing process

Verstile application

Used as washing off agents for Reactive dyed/printed substrates.


Used as a levelling agent for vat dyes.

Used as a stripping agent for Reactive dyes at higher dosage.






General Characteristics
Physical appearance
White to yellowish powder
Ionic nature Nonionic
pH of 1% solution
5 +/-1
Miscibility Miscible with water
Compatibility
Compatible with cationic, anionic and nonionic products
Stability
Stable to dilute acids and dilute alkalies
Application

1. Washing-off of dyeings by batch operation :

  • 0.2-0.5 g/l Esto-PVP
  • pH adjusted to 5-6. Residual salt concentration should be less than 2 g/l before soaping. Treat at 85-98 deg.C for 10-30 mins.

2. Washing-off of dyeings and prints on continous range :

  • 0.5-1 g/l Esto-PVP
  • pH 5-6, temp. 95-98 deg.C

3. Preventing re-deposition in stripping of vat, sulphur and reactive dyes :

  • 4-6 g/l Caustic soda flakes
  • 4-6 g/l Sodium hydrosulphite
  • 0.5 g/l Esto-PVP
  • 1-2 g/l celldet-R

Treat at 70-80 deg.C for 45-60 mins. Wash and neutralise before overdyeing.

Precautions

Storage : Store in cool, ventilated shed away from heat and direct sunlight. Storage temperature should not exceed 35 deg C. Close lids firmly to avoid contact with air and moisture.

Shelf Life : 9 months from the date of manufacturing, if stored under controlled conditions.

The above information is given in good faith and is without warranty

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