Nestoquest - SD | Sequestrant and dispersing agent

• Product Information

  Nestoquest - SD is a most effective sequestering and dispersing agent for heavy metals like calcium, magnesium and iron.

• Key Features & Benefits

  1. Prevention of Scale Deposition:

     • Nestoquest - SD is highly effective in preventing scale deposition or adsorption onto fibers and equipment surfaces from calcium and magnesium salts.

  2. Oligomer-Dispersing Agent:

     • As an effective oligomer-dispersing agent, Nestoquest - SD plays a crucial role in maintaining a uniform dispersion of oligomers in various processes.

  3. Dispersion of CMC and Acrylic Sizing Agents:

     • Nestoquest - SD demonstrates effectiveness in dispersing Carboxymethyl Cellulose (CMC) and acrylic sizing agents, contributing to process efficiency.

  4. Enhanced Performance in Hydrogen Peroxide Bleaching:

     • In Hydrogen Peroxide bleaching systems with silicate stabilizers, Nestoquest - SD minimizes issues such as poorer touch, chafe marks, and uneven dyeing.

  5. Control of Inside-Out Shade Variation:

     • Minimizing inside-out shade variation in the package dyeing of Direct, Reactive, Vat-dispersing dyes, and metal-complex dyes, Nestoquest - SD addresses challenges arising from water hardness.

  6. Superior Dispersing Effect with Pigment and Fluorescent Dyes:

     • Nestoquest - SD's superior dispersing effect with pigments and fluorescent dyes enhances pigment dispersions and facilitates the soaping of insoluble indigo dye.

  7. Prevention of Scale Formation:

     • Nestoquest - SD prevents scale formation in post-soaping and mercerization processes, ensuring the longevity and efficiency of equipment.

• Application

   

  Due to non-availability of high-quality water, the textile industry is compelled to relocate operations to areas where only hard water is accessible. This poses significant challenges as high levels of metal salts in both the processing water and natural fibers result in insoluble scum during the scouring, bleaching, and dyeing stages. The repercussions include contamination in the equipment, compromised whiteness, and noticeable color variance between the inner and outer fibers, particularly in processes such as cheese dyeing and color stripe formation.

  Nestoquest - SD is the most effective aid in preventing such problems and thus contributes to process improvement.

   

  1. CONTINUOUS PROCESS

   

  1.1 Pad-steam (Roller-bed steamer, J-Box and U-Box)

  Desize    Scouring          Bleaching

  Nestoscour - LV4                       2 g/l            2-4 g/l               3-4 g/l

  Hydrogen Peroxide (50%)          3-4 ml/l       -                  20-40 ml/l

  Caustic soda flake                     50 g/l          50 g/l                4-8 g/l

  Nestoquest - SD                       5 g/l            5 g/l                  1-2 g/l

  Nestostab – O2                         -                 -                       6-8 g/l

  Pad at 30^oC and steam at 100^oC for 20-30 mins. followed by washing (hot-warm-cold)

   

  1. 2. Combined Scour-Bleach

  Nestogen - RE                                2-4 g/l

  Nestostab – O2                               6-8 g/l

  Nestoquest - SD                             1-2 g/l

  Caustic Soda flakes                        10-20 g/l

  Hydrogen Peroxide (50%)                40-60 ml/l

  Pick up : 120-140%

  Steam at 100^oC for 10-20 mins followed by wash-off (95^oC/95^oC/80^oC/50-70^oC)

   

   

  2. DISCONTINUOUS PROCESS (BATCH OPERATION)

   

  1. 1. Enzymatic Desize (Pad-batch)

  Enzyme                               --- g/l

  Nestoquest - SD                 2-4 g/l

  Pick up : 100%

  Impregnation temperature : 60^oC

  Batch at Room temperature for 8 hours

   

  1. 2. Pad-Batch

  Oxidative Desize      Scouring

  Nestogen - RE                    3-5 g/kg                        3-5 g/l

  Nestoquest - SD                 1-2 g/kg                        3-5 g/l

  Hydrogen Peroxide              12-17 ml/kg                  -

  Caustic Soda                      8-10 g/kg                      40-60 g/l

  Pick up : 100%

  Desize: Pad-batch at 90^oC for 1 hour

  Scouring : Pad at 50-90^oC and batch at 90^oC for 2-3 hours.

   

  1. 3. Boil Off (JET)

  Nestogen - RE                    0.3-0.5%

  Nestoscour - LV4                 0.5-0.7%

  Nestoquest - SD                 1-2%

  NaOH (100%)                      1-2%

  M:L = 1:10; 90^oC/30 mins

   

   

   

  1. 4. Scour Bleach - Knits and coloured goods (JET)

  Nestogen - RE                                0.3-0.5%

  Nestoquest - SD                             0.5-1%

  Nestostab – O2                               0.4-0.7%

  NaOH (100%)                                  1-2%

  Hydrogen Peroxide (35%)                3-5%

  M:L = 1:10:

  95^oC/40 mins; drain at 70^oC - hot wash - cold wash

  Product PK-1                                  1%      

  70^oC/20mins followed by cold wash

  1. 5. Reactive Soaping (Washing off) for woven

  Nestoquest - SD                             0.4-0.5% owf

  Treat @85-90 ^OC for 30 – 40 mins

• Storage & Packing

   

  Storage: Stable under normal conditions.

• other Information

  • Type: Weakly Anionic
  • Appearance: Transparent Liquid
  • Solubility: Easily soluble in cold water.
  • Compatibility: Stable to alkalies, acids, electrolytes, hard water, and compatible with auxiliaries used in bleach bath.