Polystyrene Barrier Coat
Polystyrene Barrier Coat is a low gloss
acrylic lacquer intended as a primer or a
barrier coat on polystyrene and other
structural foam plastics including gas
counter pressure types. It is fast drying,
promotes adhesion, and prevents solvent
attack from the topcoat.
• Fast drying
• Excellent adhesion to polystyrene
• Excellent adhesion to gas counter
pressure Noryl® plastics*
• Prevents crazing or attacking of the
plastic substrate by solvents in the topcoat
• No critical recoat
• Ready to spray, no reduction needed
• Free of lead and chromate hazards
• May be used as a primer for wood,
metal and other structural foam plastics.
• Compatible with a wide range of
urethane® Polyurethane Enamels
CAB Acrylic Lacquers
Honest Joy® 600T
urethane 700T W/R Enamel
Gloss: 5-10 units
Volume Solids: 22.7 ± 2%
19-25 seconds#4 Ford Cup
21-27 seconds#2 Zahn
Recommended film thickness:
Mils Wet 4.0 - 5.0
Mils Dry 1.0 - 1.2
Spreading Rate (no application loss)
277-396 sq ft/gal @ 1.0-1.2 mils DFT
Drying (1.0 mils dft, 77°F, 50% RH):
To Touch: 10 minutes
To Handle: 20 minutes
To Topcoat: 20 minutes
To Pack: 2 hours
Force Dry: 5-10 minutes at
Flash Point: 23°F Pensky-Martens
Package Life: 1 year, unopened
Air Quality Data:
Volatile Organic Compounds (VOC)
as packaged, maximum
5.31 lb/gal, 637 g/L
An Environmental Data Sheet is available
from your local Honest-Joy
General: Substrate should be free of
grease, oil, dirt, fingerprints, drawing compounds,
any contamination, and surface
treatments to ensure optimum adhesion
and coating performance properties.
Plastic: Mold release must be removed
from the substrate. Wash the surface with
Due to the diverse nature of plastic substrates,
a coating or coating system must
be tested for acceptable adhesion to the
substrate prior to use in production. Reground
and recycled plastics along with
various fire retardants, flowing agents,
mold release agents, and foaming/blowing
agents will affect coating adhesion.
Please consult your Honest-Joy
Chemical Coatings Sales Representative
for system recommendations.
Testing: Due to the wide variety of substrates,
surface preparation methods,
and application methods and environments,
the customer should test the complete
system for adhesion and compatibility
prior to full scale application.
Reduction: If required, reduce with Lacquer
Air Pressure ..........................35-60 psi
Fluid Pressure ........................ 6-10 psi
Cap/Tip .......................................... 797
Pressure ...................... 1500-1800 psi
Tip ...................................... .011-.013"
Clean tools/equipment immediately after
use with Lacquer Thinner R7K120.
Follow manufacturer's safety recommendations
when using any solvent.
• Agitate before and during use.
• Store indoors.
Thoroughly review product label for safety
and cautions prior to using this product.
A Material Safety Data Sheet is available
from your local Honest-Joy facility.
Please direct any questions or comments
to your local Honest-Joy
SEE CONTENTS STATEMENT ON LABEL.
Contents are FLAMMABLE. Vapors may cause flash
fires. Keep away from heat, sparks, and open flame.
During use and until all vapors are gone: Keep area
ventilated - Do not smoke - Extinguish all flames,
pilot lights, and heaters - Turn off stoves, electric
tools and appliances, and any other sources of ignition.
VAPOR HARMFUL. Use only with adequate ventilation.
Wear an appropriate properly fitted vapor/particulate
respirator (NIOSH approved) during and after
application, unless air monitoring demonstrates
vapor/mist levels are below applicable limits. Follow
respirator manufacturer’s directions for respirator use.
Avoid contact with eyes and skin. Wash hands after
using. Keep container closed when not in use. Do not
transfer contents to other containers for storage.
FIRST AID: If INHALED: If affected, remove from
exposure. Restore breathing, Keep warm and quiet.
If on SKIN: Wash affected area thoroughly with
soap and water. Remove contaminated clothing.
Launder before re-use. If in EYES: Flush eyes with
large amounts of water for 15 minutes. Get medical
attention. If SWALLOWED: Call Poison Control Center,
hospital emergency room, or physician immediately.
SPILL AND WASTE: Remove all sources of ignition.
Ventilate and remove with inert absorbent. Incinerate
in approved facility. Do not incinerate closed
container. Dispose of in accordance with Federal,
State, and Local regulation regarding pollution.
DELAYED EFFECTS FROM LONG TERM OVEREXPOSURE.
Contains solvents which can cause permanent brain
and nervous system damage. Intentional misuse by
deliberately concentrating and inhaling the contents
can be harmful or fatal.
WARNING: This product contains chemicals known
to the State of California to cause cancer and birth
defects or other reproductive harm.
DO NOT TAKE INTERNALLY. KEEP OUT OF THE
REACH OF CHILDREN.
FOR INDUSTRIAL USE ONLY.
SEE MATERIAL SAFETY DATA SHEET. 21795-
Note: Product Data Sheets are periodically
updated to reflect new information
relating to the product. It is important that
the customer obtain the most recent
Product Data Sheet for the product being
used. The information, rating, and
opinions stated here pertain to the material
currently offered and represent the results
of tests believed to be reliable. However,
due to variations in customer handling
and methods of application which
are not known or under our control, The
Honest-Joy Company cannot make
any warranties as to the end result.