RUBFAST-425 | Wet Rubbing Fastness Improver

Rubfast-425 is a speciality finishing agent to improve dry and wet rub fastness for all types of dyed and printed cotton and their blends. Rubfast-425 is effective for dyed and printed emerised dark shades. Rubfast-425 is compatible with certain cationic and nonionic silicone finishing agents. Rubfast-425 can be applied by both dry-on-wet and wet-on-wet application.

Padding process

• Dosage : 20- 30 g/l
• Pick- up : 65- 70%
• Bath pH : 5.0- 5.5
• Drying : 130- 160 deg.C

Exhaust process

• Dosage : 2- 3%
• Bath pH : 5.0- 5.5
• Bath Temp. : 40 deg.C, 30 mins
• Drying : 110- 150 deg.C

*Exhaust process is suitable only for Package dyeing and Garment drum m/c.

*70-100 g/l Rubfast-425 is recommended for wet-on-wet application.

Note:

Drying at 145-150 deg.C 90 sec. gives better results than 130-140 deg.C

For garments, it is essential to cure at 150 deg.C after exhaustion.

Rubfast-425 has limited durability to washing.

Special Instructions:

• Fabric to be treated should be free from anionic components.
• Performance of Rubfast-425 is achieved when it is used alone without any finishing agent as with some finishing agents, the performance of Rubfast-425 slightly impairs.
• Do not use Rubfast-425 in print paste.
• Pre-lab trials are recommended with other finishing agents.
• Absorbency of fabric should be instant. To improve absorbency of all over printed fabric (reactive/pigment), 0.2-0.5 g/l Celldet-R (wetting agent) is to be added in the finishing bath.
• pH of the fabric should be neutral.
• First, pH of water to be adjusted to 5.0-6.0 and then final pH with Rubfast-425 should be 5.0-6.0. This solution is stable upto 2 hours. If any precipitation is observed, stir using
  mechanical stirrer with low speed.
• To avoid precipitation formation, Rubfast-425 (in neat form) to be mixed with 10 g/l Isopropanol and then diluted with pre-adjusted pH water.
• If finishing is to be done alongwith softener, then first prepare Rubfast-425 solution and then add the softener into it.
• If fabric is biopoished than the Rubfast-425 gives lower rating than nonbiopolished fabric.
• Use of softener is likely to reduce the performance of Rubfast-425.
• Finished fabric to be dried only at 150 deg.C in stenter with minimum time.
• Rubfast-425 is unstable to sodium citrate and exhibit limited stability to electrolytes.
• Addition of 2-3g/l Saraline-FI makes the Rubfast-425 solution robust (stable).
• Rubfast-425 on standing during storage may become dark (reddish orange in colour)

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.