PRODUCT PROPERTIES
All time calculations are based on temperatures of 77 F, 25 C
Lab tested with Norox 925
Viscosity
Brookfield RVF, Spindle #2 at 20 rpm 540-680 cps
Thixotropic Index Minimum 3.0
Gel Time
Based on 100g mass catalyzed at 2% MEKP
15 – 18 minutes
Weight per gallon 8.85 lbs
Coverage per gallon, 20 mil thickness 80 sq ft
Maximum VOC
VOC in use
362 g/l
< 232 g/l *
KEY USES
Exterior carbon fiber
parts
Exterior fiberglass parts
Multiple marine
applications (above
waterline)
Outdoor wood furniture
Duratec SunShield Clear Polyester Topcoat represents a breakthrough in
polyester clear coat technology. The topcoat resists yellowing in sunlight;
no sun blocking urethane is required for exterior use. The topcoat
provides a high quality finish with good chemical resistance. This product
has been specially formulated to be easy to sand and polish.
FEATURES
UV RESISTANCE
Resists yellowing when exposed
to sunlight.
EASY APPLICATION
This product is easy to apply and
sand.
PRE-PROMOTED
For safety, consistency and easy
use. Air-cure with no wax
required.
HIGH GLOSS
Polishes to a high gloss wet
look surface.
CHEMICAL RESISTANCE
Highly cross-linked coating
provides excellent chemical
resistance.
STRENGTH & FLEXIBILITY
Excellent flexibility and impact
resistance.
CLEAR SUNSHIELD
POLYESTER TOPCOAT
PRODUCT #904-061
S
AFETY & HANDLING
Sunshield Poly
ester Topcoat is extremely flammable. Do not apply near sparks,
open flames or heat. Keep area ventilated. Do not smoke. Av
oid continuous
breathing of vapor. Sunshield contains ingredients which could be harmful if
mishandled. Contact with skin and eyes should be avoided and necessary
protective equipment and clothi ng should be worn. Individual s
should wash with
soap and water befor e eating or drinking. A ll containers
should be properly labeled
to prevent accidental ingestion or improper disposal. Individuals should resea l any
partly
used material back in the container. Store under cool, dry conditions and
away from open flames
and high temperatures.
For more detailed instructions on storage, please see the MSDS sheet.
DESCRIPTION
909-546-1160
hawkeyesales@hawkeyeind.com
PO BOX 415,
BLOOMINGTON, CA 92316
WWW.DURATEC1.COM
*Note: based on calculations using the UEF table to determine styrene emissions. Local
regulations vary. Consult your local AQMD to confirm actual VOC in use.
CLEAR SUNSHIELD
POLYESTER TOPCOAT
APPLICATION GUIDE | PRODUCT #904-061
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE www.duratec1.com
Prepare & Catalyze
Temperature should be at least 64 F for both the product and the part. Mix Duratec with either a paint
shaker or a drill-mounted mixer. A paint stir stick will not be enough.
Catalyze the Duratec at 2.0 % by weight with a low hydrogen peroxide MEKP, like Norox 925. Only
catalyze what can be used in 12 minutes.
Sunshield is best applied by spraying. We
recommend HVLP air-assisted spray guns. A 1.6 - 1.8mm tip
is recommended. Use 34-40 psi air pressure. Adjust the needle and fan to provide the proper spray.
Additional solvent is not needed for most spray guns. If thinning is required, we suggest the use of
Duratec 39UCE Reducer.
Apply
Option #1: In-Mold Prior to Laminating
Ensure mold is clean and free of silicone. When sprayed in-mold Sunshield we suggest use of a wax mold
release agent like TR108 or honey wax rather than or in conjunction with semi-perm release agents. This
will allow the proper surface tension essential for Sunshield to level and ow across the in-mold surface.
Adjust uid pressure and atomizing air to achieve an even pattern with fne droplets prior to spraying the mold.
The frst pass should be a dust coat that sets up for two minutes before further application. The dust coat
should be a light fog, not a continuous flm.
Additional coats of 4-5 mils can be applied, again allowing a minimum of two minutes to out-gas. Twelve mils
will provide a nice fnish with UV protection. Up to 22 mils can be applied if the part requires aggressive post
sanding.
The coating needs to be tacky free for each build coat to bond. Laminate polyesters and vinyl esters when the
Duratec has set up and does not transfer, but retains some tack. Cure time varies with temperature and air ow.
For epoxy laminating systems, a tack free surface is required. Increased heat up to 120 F will speed this process.
Remember the adhesion comes from the epoxy. Test the bond between the Duratec and your epoxy blend to
assure good adhesion.
W
WW.DURATEC1.COM 909-546-1160 HAWKEYESALES@HAWK EYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316
Limited/ warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our
products before use and satisfy themselves as to contents and suitability. Nothing herein shall constitute a warranty, expressed or implied, including any
warranty of merchantability or fitness, nor is protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all
proven claims is replacement of our materials and in no event shall we be liable for special, incidental or consequential damages.
CLEAR SUNSHIELD
POLYESTER TOPCOAT
APPLICATION GUIDE | PRODUCT #904-061
The following use instructions are broad to address multiple applications. We recommend testing for product
compatability with your process. Please contact our Tech Team at (909) 546-1160 with any questions.
PLEASE NOTE
Apply www.duratec1.com
Option #2: Finishing Parts
NOTE: For epoxy laminate, water washing with clean water and a heavy duty scrub sponge pad is
necessary before and after sanding. It is not necessary to water wash polyester or vinyl ester laminates.
Abrade the entire surface with 180 grit, providing mechanical tooth. Remove dust and acetone-wipe the surface.
Set up gun, mix, and catalyze as previously mentioned.
Pro Tip: Sunshield can by applied by brush or roller when topcoating wood.
The Duratec may need to be mechanically forced into severe porosity. The frst 2-3 mil passes can be worked with
a squeegee to fll the holes.
Additional coats can be applied after two minutes and while the surface is still tacky.
If re-coating the full cured Duratec is necessary, frst sand with 180 grit.
The fnal spray should be sanded with 400 grit and allowed to cure for 8 hours prior to fnal polishing.
WWW.DURATEC1.COM 909-546-1160 HAWKEYESALES@HA
WKEYEIND.COM PO BOX 415, BLOOMINGTON, CA 92316
Limited/ warranty statement: Our products are intended for sale to industrial and commercial customers. We request that customers inspect and test our
products before use and satisfy themselves as to contents and suitability. Nothing herein shall constitute a warranty, expressed or implied, including any
warranty of merchantability or fitness, nor is protection from any law or patent to be inferred. All patent rights are reserved. The exclusive remedy for all
proven claims is replacement of our materials and in no event shall we be liable for special, incidental or consequential damages.
CLEAR SUNSHIELD
POLYESTER TOPCOAT
TROUBLESHOOTING | PRODUCT #904-061
Problem Cause Solution
Alligatoring
Not enough catalyst used.
Substrate/primer incompatibility or
chemical reaction.
Check for proper catalyst levels.
Expose surface to higher temperature
before spraying when ambient temp
of below 64 F
, 18 C.
Product sprayed on cold surface.
Check compatibility of surface of product.
Cracking Product sprayed too thickly, too fast.
Increase the number of passes,
adding dwell time between coats.
Dimples (Craters)
Film build up too rapid, solvent
trapped in product.
Increase the number of passes to achieve
desired thickness. Allow for ash o
between passes.
Fisheyes
Substrate contaminated.
Do not use a tack rag . Ensure rag does
not leave contaminant on surface.
Spray in a clean area to minimize airborne
dust, water, waxes, and/or silicones.
Spray with dry fltered air.
Contamination in the air.
Contamination in the line.
Orange Peel
Spray equipment set up incorrectly.
Spray pressure incorrect.
Pot pressure incorrect.
Follow the instructions for equipment
set up.
Set pressure at 34-40 psi.
Set pressure at 10-12 psi.
Pattern surface
sticks to mold
upon release
Pinholes
Porosity
Improper release preparation.
Follow manufacturer s instructions
when applying release materials.
Primer not fully cured before
compounding and polishing.
Excess gel time for tooling gel coat.
Substrate porosity.
Fill porous areas with product using
squeegee, brush or roller before spraying.
Follow instructions in the application
guide for pattern surfacing.
Follow manufacturer s recs for gel time
Acetone used as thinner.
Spray pressure too high.
Spray orifce too small.
Reduce pressure to 34-40 psi.
Use larger orifce.
Use slower solvent such as Duratec
Reducer or MEK
Not using silicone free paste waxUse a silicone free paste wax, like TR 108
(800) 281-4975
sales@revchem.com
