Pigment Calcium Carbonate

Calcium Carbonate is a non- toxic odorless, non- irritating white powder and  one of the most versatile inorganic fillers. Calcium carbonate is neutral , substantially insoluble in water  and soluble in acid. According to different calcium carbonate production methods, calcium carbonate can be  divided into heavy calcium carbonate and  light carbon.

 Calcium Acid , colloidal calcium carbonate and crystalline calcium carbonate  is a common  substance  on the earth. It  found in rocks such as vermiculite, calcite chalk, limestone, marble, travertine, etc.

It is also the main component of animal bones or shells. Calcium Carbonate is an important building material and is widely used in industry.

Application  of Calcium Carbonate  in latex paint :

The role of heavy calcium :

• As a body pigment. It has a filling effect to make it fine , uniform , and white.
• It has a certain dry hiding power, and generally uses  ultra- fine products. When the particle size is close to the particle size of titanium dioxide, the covering effect of  titanium dioxide can be  improved.
• It can improve the strength, water resistance, dryness and  scrub resistance  of the  painting film.
• Improve color retention.
• Reduce the cost, the usage os 10%-50%. Disadvantages : high density , easy  to precipitate, the  amount of  use  should not be too large.