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Benefits of Calcium Carbonate in the Paint industry

calcium carbonate (CaCO3) , commonly known as limestone or chalk, is a basic material in the paint industry. It plays an important role in various paint properties and provides many benefits.

Functions of calcium carbonate in paint:

  • Filler: Calcium carbonate is used as a filler to reduce the cost of paint without compromising its quality.
  • Property enhancer: Calcium carbonate improves coating properties such as viscosity, covering ability, and corrosion resistance.
  • Bleach: Calcium carbonate is used as a bleach to increase the whiteness of paint.

Types of calcium carbonate used in paint:

  • Ground Calcium Carbonate (GCC): This is the most common type and provides good value for money.
  • Precipitated Calcium Carbonate (PCC): It has a smaller particle size and higher purity, which improves the coating properties.
  • Granulated Calcium Carbonate: This has an even smaller particle size than PCC, giving better performance in some types of coatings.
Also Read Derivatives Of Calcium Carbonate

Effects of calcium carbonate on paint properties:

  • Viscosity: Calcium carbonate increases the viscosity of the paint, which may affect the ease of application.
  • Gloss: Calcium carbonate reduces the gloss of paint.
  • Covering ability: Calcium carbonate increases the coating’s covering ability.
  • Corrosion resistance: Calcium carbonate increases the paint’s resistance to corrosion.

Criteria for selecting calcium carbonate for paint:

  • Particle size: The particle size of calcium carbonate should be compatible with the type of coating.
  • Color: The color of calcium carbonate should be bright white.
  • Purity: Calcium carbonate must be free of impurities.

Other uses of calcium carbonate in the paint industry

  • Making putty: Calcium carbonate is used as a filler in making putty.
  • Varnish making: Calcium carbonate is used as a filler in making varnish.
  • Making Basics: Calcium carbonate is used as a filler in making basics.

 

Also Read Fertilizer Industry And Its Relationship To Calcium Carbonate

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