Calcium stearate

Calcium stearate is obtained from the reaction of stearic acid and lime.

2 C17H35COOH + CaO → (C17H35COO)2Ca + H2O

It is a fine powder, white and silky to the touch, with the following properties:

  • It is very stable under high temperature conditions
  • It is non-toxic and is even used as a food additive, E470
  • It is highly resistant to water and has water-repellent properties
  • It serves as a lubricant, stabilizer and thickener in various processes.

You can buy 50% liquid calcium stearate emulsion, which makes even distribution, dosage and handling easier.

We also have a dust-free/granulated product which is very suitable for pneumatic conveyance; it has a more precise dose and is cleaner.

DUST-FREE STEARATE

In Mateos, S.L. we are able to produce calcium stearate free of fine particles – dust-free – with the following advantages for the customer:

  • Cleaner handling of the product
  • Easier transportation
  • Better dosage, does not form mounds, does not cake, etc.
  • Constant apparent density
  • Customized particle size

This stearate is perfect for applications where it is dosed by pneumatic transport systems. With the dust-free product, the stearate is prevented from ending up in the system’s filters and remains in the chippings, pellets and ingredients, etc.

Another advantage is that more accurate dosages can be obtained and more efficient use of the product.

In addition to the material obtained by tumbling Big Bags by hand, or in open spaces, this is much cleaner as it contains no dust.

Imagen Dust-free/perlado estearato de calcio

DUST-FREE STEARATE

In Mateos, S.L. we are able to produce calcium stearate free of fine particles – dust-free – with the following advantages for the customer:

  • Cleaner handling of the product
  • Easier transportation
  • Better dosage, does not form mounds, does not cake, etc.
  • Constant apparent density
  • Customized particle size

This stearate is perfect for applications where it is dosed by pneumatic transport systems. With the dust-free product, the stearate is prevented from ending up in the system’s filters and remains in the chippings, pellets and ingredients, etc.

Another advantage is that more accurate dosages can be obtained and more efficient use of the product.

In addition to the material obtained by tumbling Big Bags by hand, or in open spaces, this is much cleaner as it contains no dust.

Supply formats for calcium stearate
  • Big Bags – 400Kg – 1,100Kg
  • 20kg sacks
  • 20′ or 40′ containers for export
  • Calcium stearate emulsion

We also supply it custom-made, by bulk density, granulometry, etc.

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Some applications of calcium stearate

Imagen estearato de calcio plásticos

MANUFACTURING OF PLASTICS

It is an excellent solid lubricant used in injection and extrusion processes.

It is also used as a stabilizer with which it is possible to obtain properties of better transparency, good colour maintenance, good long-term stability, low odour, low migration and volatility, and resistance to weather conditions.

In the manufacture of PVC, calcium stearate neutralizes hydrochloric acid, HCl, which can be released from PVC, prolonging its life.

It can be used in the following plastics:

  • Acrylonitrile Butadiene… (ABS)
  • Polypropylene (PP)
  • Vinyl polychloride (PVC)
  • Polyethylene (PE)
  • Polyamide (PA)
  • Polystyrene (PS)
  • Sheet and bulk moulding (SMC/BMC)

SEPARATING AGENT: RUBBER, PLASTIC AND CERAMICS

Unlike other separating agents, stearates are characterized by their high melting point, so they can be used just like graphite as a dry lubricant added as a fine powder.

Among the industries that work with calcium stearate as a separating agent are:

  • Metal
  • Rubber
  • Plastic
  • Ceramic

The separating agent is usually used in different forms, in diffusers as the final product, emulsion stearate, or by the dosing in the form of chippings or raw material.

Imagen estearato de calcio desmoldeante

SEPARATING AGENT: RUBBER, PLASTIC AND CERAMICS

Unlike other separating agents, stearates are characterized by their high melting point, so they can be used just like graphite as a dry lubricant added as a fine powder.

Among the industries that work with calcium stearate as a separating agent are:

  • Metal
  • Rubber
  • Plastic
  • Ceramic

The separating agent is usually used in different forms, in diffusers as the final product, emulsion stearate, or by the dosing in the form of chippings or raw material.

Imagen estearato de calcio hidrofugante

WATER REPELLENT IN CONSTRUCTION

A small addition of calcium stearate in solid or emulsion in small proportions, between 1% and 6% with respect to cement, significantly improves the water-repellent properties of the mixture.

In this way, in addition to providing impermeability to the mixture, the appearance of efflorescence is avoided. Within the construction sector, Mateos, S.L. provides calcium stearate to the following industries:

  • Prefabricated concrete
  • Mortar
  • Floors
  • Terrazo
  • Ceramic tiling and concrete

In the prefabs industry, emulsion stearate is widely used, while the powder form is used in the manufacture of mortars and putties.

ANTI-CAKING

It is used in cosmetic, pharmaceutical, food and chemical formulations as an anti-caking agent due to its lubricating and water-repelling properties. Prevents products from absorbing moisture and sticking and increases plasticity.

The addition of calcium stearate provides a more homogeneous image to the product it is added to and makes its dosing and transportation easier.

Some examples of our customers:

  • Chemistry, powder products
  • Fertilizers
  • Detergents
Imagen estearato de calcio antiapelmazante móvil
Imagen estearato de calcio antiapelmazante

ANTI-CAKING

It is used in cosmetic, pharmaceutical, food and chemical formulations as an anti-caking agent due to its lubricating and water-repelling properties. Prevents products from absorbing moisture and sticking and increases plasticity.

The addition of calcium stearate provides a more homogeneous image to the product it is added to and makes its dosing and transportation easier.

Some examples of our customers:

  • Chemistry, powder products
  • Fertilizers
  • Detergents
Imagen papel estearato de calcio

PAPER INDUSTRY

The paper industry uses calcium stearate as this is a low cost additive which lengthens the life of the paper and gives it a semi-matte appearance.

For this application high quality stearate and very special fine grinding is required, or what is even better, the use of our stearate emulsion which guarantees a homogeneous spread of the product and also facilitates its application.

ANTI-FOAMING AGENT

It is commonly used in the formulations of different anti-foaming agents.

Generally, anti-foaming agents consist of insoluble agents in foam medium. It is important that these anti-foamers have low viscosity and are easily dispersed quickly in the medium.

The dose of stearate is usually 0.5% to 1% on top of the solid matter in the dispersal.

ANTI-FOAMING AGENT

It is commonly used in the formulations of different anti-foaming agents.

Generally, anti-foaming agents consist of insoluble agents in foam medium. It is important that these anti-foamers have low viscosity and are easily dispersed quickly in the medium.

The dose of stearate is usually 0.5% to 1% on top of the solid matter in the dispersal.

Imagen textil y calzado - estearato de calcio

TEXTILES AND FOOTWEAR

Calcium stearate is added to provide impermeability to different fabrics, footwear and even rock wool that is used as an insulator.

Another advantage of this additive is its effectiveness as a waterproofing and its low cost.

LUBRICANT IN EXTRUDERS

To improve productivity in production by extrusion and laminating plastics and metals, calcium stearate is added. This acts as an additive and a solid lubricant, adding between 0.3 – 1.0% of calcium stearate to the mixture in the feed hopper. It remains stable at high temperatures and improves the following aspects in manufacturing;

· Product homogeneity
· Hot spots
· Energy consumption
· Savings on raw materials

.

Imagen Dust-free/perlado estearato de calcio

LUBRICANT IN EXTRUDERS

To improve productivity in production by extrusion and laminating plastics and metals, calcium stearate is added. This acts as an additive and a solid lubricant, adding between 0.3 – 1.0% of calcium stearate to the mixture in the feed hopper. It remains stable at high temperatures and improves the following aspects in manufacturing;

· Product homogeneity
· Hot spots
· Energy consumption
· Savings on raw materials

g.

Imagen extrusoras - lubricante

FLAME RETARDANT

At a concentration of around 2%, both calcium stearate and zinc stearate are used in the production of flame retardant materials.

This is also the case in the market of sound-proofers and other composite products for construction; false ceilings and panels. Stearates act as stabilizers of the formula and as a lubricant at the time of production / forming.