Rongalit D p, Reducing Agent For Printing, Discharge Agent, Textile Printing Discharge Agent, White, Color Discharge Printing Agent, (Archroma)

Rongalit D p, Reducing Agent For Printing, Discharge Agent, Textile Printing Discharge Agent, White, Color Discharge Printing Agent, (Archroma)

Rongalit® D p is a reducing and discharge agent developed by Archroma for textile printing. It is primarily used for white discharge printing on synthetic fibers, wool, and silk, as well as for discharge-resist printing on synthetic fibers. It is also suitable for colored discharge printing with acid dyes on polyamide, wool, and silk. The product is a white crystalline powder with good water solubility and is stable under proper storage conditions.

Key Features:

• Appearance: White crystalline powder.

• Chemical Composition: Zinc salt of a sulfinic acid derivative.

• pH: Approximately 4.4 (10% solution).

• Solubility: Good solubility in water at 20°C.

• Storage Stability: Can be stored in sealed containers at 0°C to 40°C for at least 12 months. Partially used containers should be kept closed and used promptly.

• Safety: Avoid contact with acids or oxidizing agents.

Applications:

1. White Discharge Printing:

   • Suitable for synthetic fibers (polyester, polyamide, polyacrylonitrile), wool, and silk.

   • Used for dischargeable dyeings on acetate, triacetate, and their blends with polyamide.

2. Discharge-Resist Printing:

   • Suitable for dischargeable padded or fully printed grounds on polyester, triacetate, and triacetate/polyamide blends.

3. Colored Discharge Printing:

   • Used with acid dyes on dischargeable dyeings on polyamide, wool, and silk.

General Application Conditions:

• Thickeners: Rongalit® D p can only be used with thickeners that are stable to heavy metal salts. Residues from thickeners may harden the fabric handle, so Lufibrol® TA liq (1-2 g/l) should be added to the wash or reductive bath to improve wash-off properties.

• Viscosity: The addition of Rongalit® D p generally increases the viscosity of print pastes, reducing the need for additional thickeners.

• Dye Selection: Careful selection of dyes and dyeing conditions is crucial for producing dischargeable grounds with disperse dyes.

Application Recommendations:

1. White Discharge and Discharge-Resist Printing:

   • Guideline Recipe:

     • 450 g thickener resistant to metal salts (10-14% solution).

     • 50-80 g Pluriol® E 300 (improves discharge effect and color yield).

     • 10 g Ultraphor® RN Plus liq (improves white effect).

     • 20-250 g Rongalit® D p.

     • 20 g Ammonium chloride.

     • X g suitable antifoam.

     • Water or thickener to make 1000 g print paste.

2. Discharge Printing on Polyacrylonitrile Fabrics:

   • Recommended addition: 150-250 g Rongalit® D p.

Steaming Conditions:

• Polyester:

  • Discharge: 15 minutes at 175°C (superheated steam).

  • Discharge-resist: 6-8 minutes at 175°C (superheated steam).

• Acetate/Polyamide:

  • Discharge: 8-12 minutes at 102°C (saturated steam).

• Triacetate:

  • Discharge: 20 minutes at 2.2 bar (pressure steam) or 8 minutes at 175°C (superheated steam).

• Polyacrylonitrile:

  • Discharge: 8-12 minutes at 102°C (saturated steam) or 20 minutes at 1.2 bar (pressure steam).

• Wool and Silk:

  • Discharge: 10-20 minutes at 102°C (saturated steam).

Process Flow:

1. Print.

2. Dry.

3. Steam: 6-10 minutes at 102°C (saturated steam, air-free).

4. Cure: 5 minutes at 150°C (hot air).

5. Cold rinse.

6. Treat at 40°C-60°C with 2 ml/l hydrogen peroxide.

7. Soap: At 60°C-70°C with a Kieralon® washing agent.

8. Thorough washing.

9. Dry and make up.

Important Notes:

• Thorough Wash-Off: Essential to remove thickener residues and prevent fabric hardening.

• Storage: Store in a cool, dry place, away from acids and oxidizing agents.

• Safety Data: Refer to the Safety Data Sheet (SDS) for detailed toxicological and ecological information.

Documents

•  
• Betakim_Rongalit D p_SDS.pdf
• Betakim_Rongalit D p_TDS.pdf
•