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 Enhancing
Coil Coatings
Processing
speed, manufacturing efficiency and uniform product quality
have long been the hallmarks of the burgeoning coil coating
industry. At Shamrock, we specialize in providing micronized
waxes and fluoropolymers that enable coil coatings to maintain
their integrity through the rigors of high speed processing,
the pressures of transportation and the demands of fabrication.
 Our
slip aids and abrasion resistance additives protect
your coatings out in the real world too. They provide improved
weatherability, durability and enhanced appearance in coatings
for applications as diverse as roof decking, auto exhaust systems,
beverage can ends, appliances, Venetian blinds, lighting fixtures
and toys to name a few. We offer a full range of waxes and wax
blends for water and solvent-based systems in particle sizes
from submicron to 300 microns. Suitable for organic or inorganic
systems, our additives can be used over aluminum and steel substrates
and incorporated into the backer coat, primer or topcoat. At
Shamrock, our products are designed to give your coil coatings
a competitive edge in performance and aesthetics.
 Discover
the many benefits of Shamrock waxes and fluoropolymers:
- Maximize
gloss retention
- Lower
gloss with burnish resistance
- Improve
mar resistance
- Enhance
abrasion resistance
- Increase
or decrease coefficient of friction
- Eliminate
blocking
- Improve
flow and leveling
- Maximize
metal marking resistance
- Improve
water repellency
Specialty
Products for Coil Coatings
VersaFlow
EV™
(Ideal for Solvent-Based Polyesters)
This unique 100% liquid polyethylene is used as a surface active
agent to reduce COF and improve leveling. It is an outstanding
alternative to silicones without the recoatability or contamination
problems. VersaFlow EV acts as a foam suppressant for high-speed
coaters, reduces edge blistering and improves reflow. Applications:
High speed coil applications.
Texture
Series
The Texture Series has become the industry standard for high
bake coil coatings. These polyolefins provide texture with a
“suede-like” feel. Because of their intrinsic high
melt viscosity, they will not lose their particle definition
at metal temperatures as high as 500°F. They are highly
resistant to all solvents. Applications: Single coat reproducible
texturing.
 Waxes
for Solvent- or Water-Based Systems
SST™
Series
Shamrock’s leading family of micronized PTFEs are insoluble
in all solvents, even at peak melt temperatures up to 600°F.
They are used for maximum abrasion resistance and slip requirements
in demanding applications. More than 100 grades available, ranging
from submicron to 30 microns average particle size. Applications:
Interior or exterior coil coated topcoats.
S-Series™
Polyethylene Waxes
These polyethylene waxes promote slip and increase mar resistance.
They exhibit limited solubility in solvents, thus avoiding recrystallization
that may cause grind or recoatability problems. Choose from
S-379H, S-394 and S-395. Applications: Backer or topcoats.
FluoroSLIP™
Series
FluoroSLIP products are combinations of PEs and PTFEs in varying
molecular weights that provide a range of properties to improve
slip and mar resistance. Choose FluoroSLIP 225 for outstanding
slip; FluoroSLIP 425 for both slip and mar resistance; FluoroSLIP
511 for excellent abrasion resistance or new FluoroSLIP 778
for slip, mar/abrasion resistance and anti-blocking. They are
used as economical alternatives to PTFEs. Applications: Single
and topcoat coil applied finishes.
S-Series™
Wax Alloys
These alloys are comprised of waxes of selected chemical families
developed in optimum ratios to achieve a maximum balance of
slip, abrasion resistance, antiblock and gloss control. Choose
new S-320 for antiblocking, reduced metal marking, gloss retention
and improved abrasion resistance; S-232 or S-236 for slip, abrasion
resistance, clarity and gloss retention especially in water-based
coatings; S-363 to reduce metal marking and lower gloss with
reduced burnishing; S-381to produce satin or flat finishes;
S-400 for anti-block resistance; or S-Nauba Series for hardness
and gloss retention. Applications: Single or topcoat applications.
Taber
Polyolefin Waxes
A family of polyolefins, PTFE and wax blends, Taber Waxes are
specifically developed for taber abrasion and falling sand resistance.
Choose from Super Taber 5509 or Taber Plus 75 for outstanding
taber abrasion and surface slip; or S-483 or Taber Tiger 5512
for outstanding taber abrasion when reduced COF is not desired.
Applications: High wear resistance coatings.
 Non-Skid™
Additives
Non-Skid additives are modified polypropylene waxes designed
to impart non-skid properties in coil coatings. They are not
abrasive, and they improve wear resistance and increase surface
COF. Choose from a range of particle sizes. Applications:
Shelving and roof deck applications.
Physical
Characteristics of Shamrock Waxes
|
PRODUCT
|
FINAL
MELT PT
|
COMPOSITION
|
PARTICLE
SIZE
AVERAGE (MICRONS)
|
| VersaFlow
EV |
liquid
at room
temperature |
PE
|
liquid |
| Texture
Series |
500°F
|
PO |
18,
25, 40, 55, 75,
90, 130, 240 |
| SST
Series |
600°F
|
PTFE
|
5,
12, 18, 30 |
| S-Series
PE Waxes |
207°-258°F
|
PE
|
5,
12, 18 |
| FluoroSLIP
Series |
207°
-258°F |
PE/PTFE
|
5,
12 |
| S-Series
Wax Alloys |
183°
-295°F |
compounds
|
3,
12, 18 |
| Taber
Waxes |
234°
-262°F
|
PO,
PTFE
compounds |
5,
18 |
| Non-Skid
Additives |
293°F
|
PP
|
6,
25 |
Key Performance
Attributes of Shamrock Waxes
Waxes
for Water-Based Systems
Neptune™
Series
These hydrophilic, micronized waxes have been specially processed
to be water-loving and easily dispersible in waterborne vehicles.
They impart lubricity, abrasion resistance and anti-block properties.
Choose PE-based Neptune 1 for scuff resistance; Neptune 968
for slip; or PTFE-based Neptune 5031 to maximize slip and abrasion
resistance. Applications: Interior applications.
Fluoro
AQ-50™ Dispersion
This non-settling PTFE dispersed in water has a Hegman reading
of 7.0. It is used as a post-add additive in water-based coil
coatings for maximum slip and abrasion resistance. Applications:
Topcoats.
Hydrocer™
Dispersions
The Hydrocer family of waxes and fluoropolymers is dispersed
in water with minimum non-ionic wetting agents. Choose Hydrocer
145 for maximum release and anti-block properties; Hydrocer
178G, a fluoroethylene wax, for slip and abrasion resistance;
or Hydrocer 9174, a PTFE-based wax, for maximum slip and abrasion
resistance all with virtually 0% VOC. Applications: Interior
or exterior applications.
Hydrocer™
Emulsions
The Hydrocer line also includes submicron waxes emulsified with
ionic surfactants in water. Choose EE95, a high density polyethylene,
when rapid development of water resistance is required; EC35,
a carnauba wax, for slip and mar resistance; or EP91, a paraffin
wax for lubricity and water beading. Applications: Interior
or exterior applications.
Physical
Characteristics of Shamrock Waxes
|
PRODUCT
|
FINAL
MELT PT
|
COMPOSITION
|
PARTICLE
SIZE
AVERAGE (MICRONS)
|
| Neptune
Series |
175°-600°F
|
PTFE,
PE |
5,
9, 10, 12, 18 |
| Fluoro
AQ-50 |
550°F
|
PTFE |
2 |
| Hydrocer
Dispersions |
205°-610°F |
PTFE,
compounds,
synthetics |
5,
10, 12 |
| Hydrocer
Emulsions |
135°
-250°F |
PE,
Carnauba
Paraffin |
submicron |
Key
Performance Attributes of Shamrock Waxes
Selecting
the Right Wax
Here are
some quick guidelines to assist you in selecting the proper
wax for your system. After reviewing the information in this
selection guide, please call our coatings application specialists
at 1-800-349-1822 (U.S. toll-free) or 973-242-2999, ext.149.
- What
do you want to achieve?
Each Shamrock product is formulated to provide varying levels
of slip and/or abrasion resistance. A good match is essential
for good performance.
- Is
your coating system solvent-based or water-based?
Shamrock products are developed to perform in specific systems.
We have grouped our products accordingly.
- Is
your system pigmented or clear?
Particle size affects clarity. A clear system may require
a smaller particle size.
- What
is your dry film thickness?
This helps determine the appropriate particle size of the
wax or fluoropolymer.
- What
are your gloss requirements?
Particle size may impact gloss and, therefore, needs to be
taken into consideration. A high gloss system generally performs
better with a smaller particle size wax.
- What
is your temperature and time cycle?
Choosing
a wax with an appropriate melt point is key to good performance.
- Will
there be a need to recoat?
While most Shamrock waxes offer recoatability, it may be advantageous
to choose one with lower slip levels.
- How
will you evaluate the performance of the wax additive?
A fingernail test requires much less abrasion resistance than
a wear-through test. Our performance illustrations provide
guidelines for general (non- empirical) comparison.
Incorporation
Tips
Following
are several key factors to consider when working with dry micronized
waxes. Proper dispersion of the wax is key to reproducibility
of performance.
- Stir-in
Waxes
Waxes referred to as “stir-in” waxes have been ground with
jet mills or similar processes. When using them, the formulator
needs only to deagglomerate the product. In order to deagglomerate
a wax or PTFE, the same approach should be taken as with any
stir-in inert (i.e., talc). A moderate amount of shear is
required; at minimum, a vortex developed with a propeller
mixer may be sufficient. Check the dispersion on a grind gauge
to ensure that it has been properly deagglomerated. The focus
here should be on the fineness and absence of oversize particles.
- Solvency
and Temperature
When working with stir-in polyethylene waxes in a solvent
system, care should be taken not to dissolve them. Straight-chained
linear polyethylenes are intended to remain as inert, discrete
particles in the coating. As a rule, polyethylenes are more
soluble in aromatics, aliphatics and chlorinated solvents.
They are less soluble in glycol ethers and ester and considerably
less soluble in alcohol and ketones. The key here is to avoid
the softening point of the wax in active solvents. Shamrock
technical service chemists can assist in this situation. Please
note that, unlike polyethylenes, PTFE is insoluble in all
solvents.
Many factors
other than those discussed above may influence proper deagglomeration.
To discuss specific concerns, please call our coatings application
specialists at 1-800-349-1822 (U.S. toll-free) or 973-242-2999,
ext. 149.
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