Sasol Chemicals SASOLWAX C80-G is a highly crystalline, micronized Fischer-Tropsch wax for the inks, paints, coatings and adhesives market. It supports formulations where defined melting behavior, surface protection and matting are required.

SASOLWAX C80-G is used in powder coating formulations providing matting, slip, degassing, and improved transfer efficiency. With the melting point of 86 °C, low viscosity, and excellent hardness even at elevated temperatures SASOLWAX C80-G provides superior performance especially when post-dosed.

SASOLWAX C80-G is also used in paints, wood coatings and corrosion protection formulations to modify surface and application properties.

Functions: Flattener, Leveling Agent, Slip Agent

Chemical Family: Fischer Tropsch Waxes, Waxes

Features: Abrasion Resistance, Chipping Resistance, Corrosion Resistance, Improved Degassing, Improved Hardness, Low Viscosity, Matting, Reduced Wear

End Uses: Powder Coating

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
Technologies

Features & Benefits

Product Background

Powder coatings provide many improvements over traditionally painted surfaces. Better scratch performance, chip resistance and wear resistance are several of the benefits of using powder-coated systems due to their improved hardness over conventional paints.
The majority of substrates coated with powder are metallic; however, new improvements are expanding the array of powder-coatable materials. Regardless of the substrate being coated, additives, such as wax, are used in formulations to boost performance.

Sasol’s Fischer-Tropsch hard waxes are attractive alternatives to polyethylene, polypropylene and amide waxes traditionally used in powder coatings to improve slip and smoothness, induce matting, increase transfer efficiency and aid in degassing. The following unique characteristics of Sasol’s Fischer-Tropsch waxes ensure ideal performance in powder coating formulations.

  • Synthetic production, resulting in consistent high quality
  • Low viscosity with excellent thermal stability
  • High degree of linearity
  • Available in a wide range of melting points, from 80°C to 105°C
  • High degree of crystallinity
  • Very low surface tension
  • High level of hardness

 

Applications & Uses

Compatible Substrates & Surfaces
Coating Type

Properties

Typical Properties
ValueUnitsTest Method / Conditions
Congealing point80 - 85°C
Drop melt point86 - 90°C
Needle penetration (at 25 °C)4.0 - 9.01/10 mm
Needle penetration (at 65 °C)60 - 701/10 mm
Particle sizes (d50,3)6.0 - 8.0μm
Particle sizes (d90,3)14.0 - 18.0μm
Density (at 25°C)0.92g/mL

Technical Details & Test Data

Mechanisms of wax function in coatings

Bloom effect

SASOLWAX C80-G - Mechanisms of Wax Function in Coatings

  • Wax melts and blooms (floats) to the surface
  • Bloom is aided by incompatibility with the coating system
  • A layer of wax is formed

 

Ball bearing effect

SASOLWAX C80-G - Mechanisms of Wax Function in Coatings - 1

  • Thin films (< 10 μm)
  • Wax particles are the same size or bigger than film thickness
  • Optimum performance – narrow particle size distribution (PSD)
  • Fast-drying films – no time for migration
Fischer-Tropsch waxes for Epoxy-Polyester hybrid powder coatings

Epoxy-Polyester powder coatings are often applied to office furniture, home appliances and automotive systems where both decorative and durable performance is needed. Sasol’s Fischer-Tropsch waxes provide smoother surfaces, higher transfer efficiencies and improved slip properties in standard epoxy-polyester powder coatings, giving you the esthetic and functional properties you need.

 

Slip resistance

While the majority of the waxes increase the slip performance over the control, SASOLWAX 0907 microcrystalline wax provides the most slip followed by SASOLWAX C80-G when extruded into the coating (Figure 1). When added to this epoxy-polyester hybrid powder coating post extrusion, SASOLWAX Spray 30-G and SASOLWAX Spray 105-G outperform the competitor waxes by offering the best slip performance.

Figure 1: Slip resistance in Epoxy-Polyester hybrid coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Epoxy-Polyester Hybrid Powder Coatings

* In this test, SASOLWAX 0907 was only added pre-extrusion; no data exists for post addition.
** Slip resistance was measured using a spring scale; a weighted sled of 28.63 grams was pulled across the surface of the coating and the corresponding resistance was measured.

 

Transfer efficiency

Improved transfer efficiency of your powder coating means more money in your pocket.
Incorporating micronized Sasol waxes like SASOLWAX C80-G, Spray 30-G and Spray 105-G post extrusion can improve the transfer efficiency of your powder system in addition to enhancing slip properties (Figure 2).

Figure 2: Transfer efficiency in Epoxy-Polyester hybrid coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Epoxy-Polyester Hybrid Powder Coatings - 1

* Waxes were added at 1% to the control powder post extrusion.
** Transfer efficiency was determined by dividing the quantity of powder deposited on the panel by the quantity of powder discharged from the spray gun cup feeder.

 

Mar resistance

Mar resistance is key to maintaining the esthetic and protective properties powder coatings provide. Choosing the appropriate wax can help you achieve these properties. When added pre-extrusion to this epoxy-polyester hybrid coating, SASOLWAX C80-G provides superior mar resistance over other traditionally used waxes. Similarly, incorporating SASOLWAX Spray 30-G or SASOLWAX Spray 105-G post-extrusion will also improve the mar resistance of your coating.

Figure 3: Mar resistance in Epoxy-Polyester hybrid coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Epoxy-Polyester Hybrid Powder Coatings - 2 

* Mar resistance was measured using a modified version of ASTM D2197. Panels were evaluated using a Hoffman type stylus at an angle of 45° under a progressive load from 0kg-force to 4kg-force at a loading rate of 6.35N/s over a distance of 80mm. Failure force was determined by noting the failure displacement from the start of the test and the associated load at that distance.
** In this test, the LDPE/PTFE was only added pre-extrusion; no data exists for post addition.

Fischer-Tropsch waxes for Hydroxy Alkyl Amide (HAA) crosslinked powder coatings

Defect-free coatings are not only esthetically pleasing but also necessary for maintaining good corrosion and water resistance. Crosslinking with HAA requires a formulation that can allow the water generated during curing to escape without leaving behind pinholes. Choosing the right additive for your formulation can help you attain higher, defect-free film thicknesses while allowing you to create smooth and mar-resistant surfaces.

 

Matting and smoothness

Matting effects are often obtained through the use of polypropylene waxes. Figure 1
illustrates how replacing polypropylene wax with SASOLWAX C80-G pre-extrusion results in equivalent gloss reduction of this HAA crosslinked powder coating. Additionally, SASOLWAX C80-G improves the smoothness of the coating (Figure 1).

Figure 1: Gloss of HAA crosslinked powder coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Hydroxy Alkyl Amide (Haa) Crosslinked Powder Coatings

* Waxes were added at 1% to the formula pre-extrusion.
** Gloss was measured using a Byk-Gardner Gloss Meter.

Figure 2: Smoothness of HAA crosslinked powder coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Hydroxy Alkyl Amide (Haa) Crosslinked Powder Coatings - 1

* Waxes were added at 1% to the formula pre-extrusion.
** Smoothness was measured using PCI Visual Smoothness Standards; 1 = Least Smooth, 10 = Smoothest.

 

Degassing

Pinholes in your powder coating can create a myriad of problems. Corrosion, chemical and water resistance properties are all negatively affected by voids created by trapped liquids and gasses in the film. Sasol’s Fischer-Tropsch waxes can increase the film thickness achievable in HAA crosslinked coatings before pinholes start appearing (Figure 3).

Figure 3: Degassing of HAA crosslinked powder coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Hydroxy Alkyl Amide (Haa) Crosslinked Powder Coatings - 2

* Waxes were added at 1% to the formula pre-extrusion.
** Degassing was measured by evaluating the film thickness at which pinholes were present.

 

Slip and mar resistance

Powder coatings must provide slip and mar resistance properties in order to impart esthetic, durability and hardness properties. Choosing the proper wax to impart the best slip and mar resistance will elevate your coating formula to the next level. In addition to smooth finishes and high film builds, Sasol’s Fischer-Tropsch waxes impart excellent slip and mar resistance. As shown in Figure 4, SASOLWAX C80-G offers the best slip performance when added pre-extrusion, and SASOLWAX Spray 30-G improves slip when post-added to the control formulation. SASOLWAX C80-G increases the mar resistance of the control when incorporated at 1%.

Figure 4: Slip resistance in HAA crosslinked powder coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Hydroxy Alkyl Amide (Haa) Crosslinked Powder Coatings - 3* Slip resistance was measured using a spring scale; a weighted sled of 28.63 grams was pulled across the surface of the coating and the corresponding resistance was measured.

 

Figure 5: Mar resistance in HAA crosslinked powder coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Hydroxy Alkyl Amide (Haa) Crosslinked Powder Coatings - 4

* Mar resistance was measured using a modified version of ASTM D2197. Panels were evaluated using a Hoffman type stylus at an angle of 45° under a progressive load from 0kg-force to 4kg-force at a loading rate of 6.35N/s over a distance of 80mm. Failure force was determined by noting the failure displacement from the start of the test and the associated load at that distance.

 

Fischer-Tropsch waxes for TGIC crosslinked powder coatings

When looking to improve the chemical resistance of your powder coating, TGIC crosslinking is the answer. Formulators know that smoother films with fewer defects will result in much more resistant coatings. One way to improve the flow of a coating is to incorporate Sasol’s Fischer-Tropsch and microcrystalline waxes. Sasol’s waxes provide lower melt viscosities to your powder formulation, resulting in enhanced flow and improved properties.

 

Slip resistance

In addition to improving melt viscosity, Sasol’s Fischer-Tropsch waxes improve the slip
properties of TGIC crosslinked coatings. As shown in Figure 1, micronized SASOLWAX Spray 30G-EF provides the most slip to this formulation when added to the control post-extrusion. Additionally, SASOLWAX C80, when added pre-extrusion, provides the best slip performance among the waxes tested.

Figure 1: Slip resistance in TGIC crosslinked powder coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Tgic Crosslinked Powder Coatings

 

* In this test, the amide wax was only added pre-extrusion; no data exists for post addition.
** Slip resistance was measured using a spring scale; a weighted sled of 28.63 grams was pulled across the surface of the coating and the corresponding resistance was measured.

 

Matting effects

Figure 2 highlights the matting benefits you can achieve in your powder coating by using
Sasol’s Fischer-Tropsch waxes. When added pre-extrusion, SASOLWAX C80 provides a
matting effect comparable to a conventional polypropylene wax. SASOLWAX Spray 30G-EF,a micronized Fischer-Tropsch wax, offers improved matting properties over the other waxes tested when added to the control post extrusion.

Figure 2: Matting effects in TGIC crosslinked powder coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Tgic Crosslinked Powder Coatings - 1

* In this test, PP wax was only added pre-extrusion; no data exists for post addition.
** Gloss was measured using a Byk-Gardner Gloss Meter.

 

Mar resistance

When it comes to improving the mar and scratch resistance of your TGIC crosslinked
powder coatings, SASOLWAX C80-G and SASOLWAX Spray 30G-EF fit the bill. Incorporating these micronized Fischer-Tropsch waxes post-extrusion will provide optimum performance over polyethylene waxes.

Figure 3: Mar resistance in TGIC crosslinked powder coating

SASOLWAX C80-G - Fischer-Tropsch Waxes For Tgic Crosslinked Powder Coatings - 2

* Mar resistance was measured using a modified version of ASTM D2197. Panels were evaluated using a Hoffman type stylus at an angle
of 45° under a progressive load from 0kg-force to 4kg-force at a loading rate of 6.35N/s over a distance of 80mm. Failure force was
determined by noting the failure displacement from the start of the test and the associated load at that distance.

Packaging & Availability

Regional Availability
  • Global

Storage & Handling

Shelf Life
5 years
Shelf Life

5 years from manufacture date in original closed and sealed packaging.