Tamarox

Tamarox is a product developed by International Speciality Chemicals to fill the gap created by certain paint or plastic applications that do not need the titanium dioxide pigment to be white, but instead, need the opacifying and UV protection properties for which titanium dioxide is so widely used.

As part of the purification process to create the white titanium dioxide pigment, acid is used to remove impurities of iron oxides, which impart a yellow or beige colour to the pigment.

 

In many colour paint applications iron oxide is in fact then added as a colour pigment and so the extra production processes used to remove the iron oxides have been wasted.

In an effort to produce a low-cost economic product we have developed this pre-whitened version of the titanium dioxide pigment which can be used to replace the white pigment in many applications and as an extender / co-product in many other formulations.

 

In certain undercoat and coil-coating applications, that do not need the high weathering resistance provided by post-production coatings, Tamarox excels as the pigment of choice offering low cost and high performance.

A side-by-side comparison shows the similarities of the traditional white titanium dioxide with Tamarox.

 

 

White TiO2

Tamarox

     

Crystal Structure

Rutile

Rutile

TiO2 Content

95%

95%

Fe2O3 Content

0%

1.5 – 2.5%

Al2O3 Content

2.0-4.5%

0.5-0.75%

SiO2 Content

0-3.0%

1.25 – 1.5%

Mean Particle Size (Microns)

0.3

0.75

Specific Gravity

4.1

4.1

Oil Absorption (ASTM D-281)

~15-20

~25

Moisture

0.5-1.0%

0.5%

Retention on 325 Mesh

<0.01%

<0.01%

Hegman Grind

7.0

7.0

pH

6.5 – 8.5

6.5 – 7.5

 

 

 

Tamarox offers therefore, an economical option for undercoats and primers as well as coil coatings and non-white interior paints.

 

Its' uses expand to plastics and especially coloured PVC piping, where the low cost of Tamarox mates perfectly with the operational requirements of a low-cost tubing or conduit.

 

Tamarox can also be used with great success in fillers and mastics, where the properties of titanium dioxide impart useful benefit for the formulator.