| Textile Pretreatments Chemicals |
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» POLYCOL – OS (Organic Stabilizer for Peroxide) |
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POLYCOL-OS is a very effective organic stabiliser for Peroxide bleaching process. It is preferable to conventional silicate based stabiliser, due to its obvious advantages. |
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GENERAL CHARACTERISTICS : |
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» APPEARANCE: Pale Brown Liquid.
» IONIC NATURE: Anionic.
» SOLUBILITY: Soluble in water in all proportions.
» COMPATIBILITY: Compatible with Nonionic / Anionic Auxiliaries. |
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SALIENT FEATURES : |
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» By proper stabilization of hydrogen peroxide, it produces high degree of white-ness with minimum fiber damage.
» Lime Soap deposits are separated & dissolved.
» Heavy metal & metal ions are complexed.
» Lower & higher molecular weight degraded products of the cellulose are made removable. |
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APPLICATION : |
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Recommended scour bleach recipe for cotton yarn & hosiery is as under :
Polycol-HPLF(Spl.): 0.5 – 1.0g/l
Polycol-HTS: 0.25 – 0.5g/l
Polycol-OS: 0.25 – 0.5g/l
Caustic Soda: 1 – 3g/l
Hydrogen Peroxide(50%): 3 – 6g/l
Temperature: 90° – 95°C
Time: 60 – 75minutes. |
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STORAGE: Stable under normal conditions. |
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» POLYCOL – PKL (Peroxide Killer) |
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POLYCOL-PKL is a ‘Special Agent’ or a Peroxide Killer that liquidates any peroxide present while exerting absolutely no effect on Reactive Dyestuffs. As a result, the use of POLYCOL-PKL ensures complete elimination of peroxide or peroxy compounds & ensures subsequent Reactive dyeing against risk of colour loss or unevenness even if added in excess.
When cottons are bleached with Hydrogen Peroxide, it becomes necessary to wash out all residual peroxide & peroxy compounds which are left in the cotton, if the material is to be subsequently dyed with Reactive dyes. In case of any peroxide getting carried into the dye bath, it affects the dyeing and causes in poor colour yield & uneven shade.
Several rinses may be required to ensure complete removal of peroxide. However, most processors give a short treatment with a reducing agent like Hydrosulphite or Bisulphite which destroys peroxides. Such treatment involves a major risk because if these reducing agents are used in excess, it may cause uneven dyeing. |
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PHYSICAL PROPERTIES : |
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» APPEARANCE: Colourless to pale clear liquid.
» SOLUBILITY: Readily soluble in water giving clear solution.
» pH: 6 – 8. |
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SALIENT FEATURES : |
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» Nullifies totally residual peroxide used during pretreatment & helps for uniform dyeing.
» Does not interfere with subsequent reactive dyeing even if used in excess. |
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APPLICATION : |
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It is important to note that POLYCOL-PKL is best utilised in alkaline conditions & at a temperatures above 70°C. It is therefore recommended that after the peroxide bath has been drained at the end of the bleaching process, POLYCOL-PKL is added in the rinse bath maintained at 70 – 75°C (the pH would be alkaline due to residual alkali from the bleach-bath) & run for 10-15min. to quench all peroxide. In fresh bath, any alkali present may be neutralised by addition of suitable acid to maintain the pH at 5 – 6 for the start of the Reacyive dyeing process at the required temperature. |
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PACKING: 50Kgs. net in Plastic Container. |
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| (Note: The above information is offered as true and accurate to the best of our knowledge but without obligation and liability.) |
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