Mach Direct’s coated calcium carbonate is a premium stearic acid-treated mineral filler, produced from high-purity Egyptian limestone. The surface treatment creates a hydrophobic layer that dramatically improves compatibility with non-polar polymers, reduces processing viscosity, and enables higher filler loading ratios without compromising product quality.
Why Choose Coated Over Uncoated?
|
Benefit |
Typical Result |
|
Better polymer dispersion |
Higher filler loading — up to 70% in PVC |
|
Reduced melt viscosity |
Easier, faster processing |
|
Improved impact resistance |
Stronger final product |
|
Hydrophobic surface |
Moisture resistance in outdoor applications |
|
Enhanced gloss & printability |
Superior surface finish |
Grade Specifications
All data sheets available for download. Grades available in both coated (stearic acid treated) and uncoated versions.|
Grade |
D50 Median (μm) |
D98 Top Cut (μm) |
Particles < 2μm |
Data Sheet |
|
Mach 70 |
1.40 |
5.0 |
70% |
PDF available |
|
Mach 60 |
1.60 |
6.0 |
60% |
PDF available |
|
Mach 50 |
2.00 |
8.0 |
50% |
PDF available |
|
Mach 40 |
2.70 |
10.0 |
40% |
PDF available |
|
Mach 1 |
4.00 |
15.0 |
25% |
PDF available |
|
Mach 2 |
4.50 |
20.0 |
20% |
PDF available |
|
Mach 3 |
5.80 |
30.0 |
15% |
PDF available |
|
Mach 4 |
7.00 |
40.0 |
— |
PDF available |
Key Industrial Applications
•PVC cables, pipes and profiles (up to 70% filler loading)
•
Automotive and industrial powder coatings
•
High-solid architectural paints
•
Rubber products: tyres, seals, gaskets, footwear
•
Masterbatch and polymer compounding
•
Adhesives, sealants and printing inks