Textile Thickener – Leomine Thickener HSL

Textile Thickener – High Solids polymer, low viscosity pourable concentrated synthetic thickening agent for pigment printing.

Chemical Nature : Highly concentrated acrylate synthetic thickening agent.

Features

• Milky white liquid.
• Miscible in water in all proportions.
• Suitable for water based and low solvent Pigment printing process.
• Suitable for Pigment discharge and resist printing.
• Swells rapidly in water.
• Has powerful thickening action.
• Non-hazardous with low toxicity.
• Stable on storage. Should be stirred before usage if drums are stored for prolonged duration.

Benefits

• Exhibits good electrolyte stability.
• Results in sharp prints and excellent contour sharpness.
• No need to add acid donor for Solvent free Pigment printing since the product acts as an acid donor during hot-air fixation.
• Desired viscosity can be achieved by lower dosage since the product is concentrated.
• Back addition can be easily done if viscosity of the print paste needs to be increased.
• Exhibits excellent wash fastness of prints.
• Results in good color strength, color brilliancy and soft handle.
• Exhibits good running properties.
• Results in good levelness of prints.
• Stock pastes prepared with Leomine Thickener HSL does not require filtering

Ecology

According to our experience this textile thickener does not exert any harmful effects on health provided they are used as per our recommendation. Does not contain APEO / NPEO.

Storage

This textile thickener has a shelf life of at least one year if stored in its tightly sealed original packing at temperatures between 5ºC and 35ºC in a dry place. Drums should be tightly resealed each time the material is taken from them, and their contents should be used up as soon as possible after they have been opened. Becomes paste like if stored for prolonged periods below freezing point. However it can be re-liquefied on warming under stirring.

Properties

Appearance: Milky White liquid

Solubility: Miscible with cold water in all proportion

pH: 6 – 8

Density: 1.0 – 1.2 g/cm³

Stability

The pH of the stock paste should be maintained at 8.0 Adjustment of pH should be done with Liq. Ammonia.

Compatibility

This textile thickener is compatible with most printing chemicals & pigment dispersions. Desired viscosity should be adjusted by back addition of Leomine Thickener HSL.

Application

Sequence of Print paste preparation under high speed stirring

• Water —> Antifoam (Leomine Antifoam TCP) —> Leomine Binder BT —> Leomine Fixing agent LFF —> Leomine Soft LIG —> Leomine Thickener HSL —> Pigments (Leomine PD series)
• pH of the print paste to be maintained at 8.

Water used should be of average hardness and adjusted to following viscosity

• Aqueous Printing – Approx. 80 dPas*
• Low solvent Printing – 60 – 70 dPas*
• *Measured with Haake Viscotester VT 02

Fixation :

• Hot-air fixation produces the optimum standard of fastness. The following temperatures and dwell times are recommended :
• 4-5 min at 150°C or 2-3 min at 160-170°C.
• Superheated steam fixation should be carried out for 5 – 7 min at a minimum of 160ºC
• This method also produces a good standard of fastness but somewhat inferior to that of prints fixed with hot air.

Guideline recipes for cotton and cotton-rich blends

Stock paste for solvent-free printing

• … g water
  2-4 g liq ammonia 25%
  80 -180 g Leomine Binder BT
  25.0 g Leomine Multifunction SFL
  12.0 g Leomine Thickener HSL
  1.000 g

Stock paste for low-solvent printing

• … g water
  2-4 g liq ammonia 25%
  80 -180 g Leomine Binder BT
  25.0 g Leomine Multifunction SFL
  8.0 g Leomine Thickener HSL
  150.0 g white spirit
  1,000 g

Please ask for shade card for entire range of Leomine PD series Pigment Dispersions

Safety

When using this textile thickener, the information and advice given in our Material Safety Data Sheet should be observed. Due attention should also be given to the precautions necessary for handling chemicals.