Monthly Archives: November 2021

Critical Properties of Pthalocyanine Pigment Dispersion Needed for Coatings & Paints

pthalocyanine pigments

Color coatings with higherbrightness and color strength are results of flawless dispersion of pigments. It is because of the optimal size of the pigment particle, and the long-term stabilization of the particles dispersed in the formulation. It shows how important dispersion of pigments is and the role it plays in the visual outcome of a coat of paint on a surface.

Let us discuss a brief account of pigment dispersion. Technically speaking, pigment dispersion in inks, paints, and liquid coating that produce stable suspension come up with three distinct essential properties.

Stability

When it comes to pigment dispersions for printing on textiles, then pthalocyanine pigments will be the best option because of their stability. These pigments come with the highest degree of stability and are the finest in terms of dimension, and these two properties help these pigments to provide a spectacular color and visual appeal to the apparel. Pigment dispersion is taking the center stage, as they are gradually replacing dyes of late, thus providing more thermal and light stability to the apparel. These pigments come up with a great extent of opacity and they are water-based. This is the reason, leading manufacturers of Phthalocyanine pigments enjoy such a special status in the industry today.

Automatic Dispersion Property

These high-quality pigments are also auto soluble and are multi-compatible solvent dyes, with the capacity of easily dissolving in any solution. Using, for instance, Pigment Red 53.1 or any other kind of similar pigment means, the production speed will be faster with the drastic reduction of the overall turnaround time of producing the finished product, as these pigments dry out faster. This means increased production at the end of the day.

Lower Level of Viscosity

Another advantage of using their pigments is that they ensure the production of better quality paints and coating thereof, due to uniform dispersion of pigments because of a lower level of viscosity. This ensures better distribution of pigment dispersions. Thus, if you opt for, say, Phthalocyanine Blue 15.0 it will surely give you better effect than any inferior quality of paint.

Eco-friendly

Pigment dispersions do not generate any toxins and are hence never a threat to the health and environment. With the environmental laws becoming stricter, more are more manufacturers are opting for paints with these pigments, which are free of formaldehyde, AZO pigments, and APEO, all of which are infamous for causing health and eco hazards.

Customizable

Pigment dispersions are customizable to make them compatible with the product in question. For instance, though pigments are opaque, they can be turned into transparent so that they meet the needs of the manufactured products. The strength, as well as the shade of dispersion, can also be specified and delivered.

Optimal Size of the Pigment

Pigment size is another critical property that needs to be taken into account while choosing pigment dispersion. The larger is the particle size, get better the opacity. However, pigment dispersion for the smaller particles shows off better transparency like this, which in turn paves the way for improved dispersion.

So these are the critical properties of pigment dispersion that you need to keep in mind. 

 

All that You Need to Know About Fast Color Salts

fast red B salt

Fast Color Salts or stabilized azoics are used in the combination with Naphthols in the textile industry, for dyeing and printing purpose. These fast color salts are stabilized with metal and are also soluble in water. As a result of this, there is no need to use Hydrochloric acid or Sodium Nitrate. Compared to fast color bases, fast color salts are convenient to use with Naphthols. These salts are safe and eco-friendly and are indispensable when it comes to the dyeing and printing of textiles. Fast Bordeaux GP Salts, Fast Orange GC Salts, Fast Scarlet GG Salt, and Fast Red B Salt, Fast Garnet GBC Salt, Fast Red 3GL Salt, Fast Red TR Salt are the examples of the Fast Color Salts.

Advantages of Using Fast Color Salts

The leading fast salts like fast blue VB salt offers some distinct advantages, some of them are listed here…

  • Wide variety of fast salts readily available of a wide range of products
  • Compatible with a wide array of grounders
  • Available in different shades with different grounders
  • Free-flowing and hence can be customized according to the need and nature of the products
  • Come with high strength and are glossy, thus giving the products an eye-catching, glossy finish

Process of using fast color salts in dyeing

Using fast color salts for printing and dyeing, the process involves several stages.

Salt Development

Dissolve the required quantity of salt in cold water and make sure there is no insoluble part left, for this will give a specky or crystallized dyeing. Add some acetic acid to pH 6.5 to ensure that the shade attains the desired brilliant shade and a proper depth. Then leave the solution like that to give it sufficient time for the full shade to develop so that the maximum color value can be attained.

After Treatment 

Wash the developed goods using sufficient cold water and soap, with the use of 3 GPL soap along with 2 GPL soda ash. Then remove the excess diazodised product, to attain maximum rubbing and washing speed.

Process of using fast color salts in Printing

After Treatment

The printed products are washed with the use of sufficient cold water and soap and boiled using 3 GPL soap along with 2 GPL soda ash. Now remove whatever extra diazotized product is available, for getting the maximum rubbing and washing speed. For the fast red B salt and Blue BB Salt soda, bi-carb is a better option than the acetic acid.

General Mechanism of dissolving fast salt

The dyeing process consists of a couple of stages. In the first step, the material is soaked and saturated with Naphthol solution. The second step involves the development of the material with a diasodised fast salt solution. The fast saltgets chemically combined with Naphthol that is absorbed by the fiber, for lending that insoluble dye on the fiber.

This clears the role of the fast red and blue salts in dyeing products in a safe and eco-hazard-free way.