MOLDTRU LPT-68000
TOOLING RESIN
MODIFIED VINYL ESTER LOW PROFILE
TOOLING RESIN
Typical Cast Mechanical Properties
Test Unit of Measure Nominal Test Method
Tensile Strength psi/Mpa 8,720/60 D-638
Tensile Modulus Mpsi/Gpa 430/3.0 D-638
Elongation (%) 3 D-638
Flexural Strength psi/Mpa 15,460/107 D-790
Flexural Modulus psi/GPa 480/3.3 D-790
Heat Distortion
o F/
oC 241/116 D-648
Barcol Hardness 934-1 42 D-2583
Izod Impact (Ft.lbs/in) 3.49 D-4812
Typical Liquid Properties
Test Unit of Measure Nominal
Viscosity Brookfield, LV
LV#3 60 rpm 25 C cps 400-600
Thix Index (static) 2.0-3.5
Styrene Volatiles % 36-38
Density, Wt/Gal cup @ 25 C lb./gal 8.7-8.9
*Typical properties are not to be construed as specifications.
DESCRIPTION
MoldTru LPT-68000 is a pre-promoted thixotropic
vinyl ester low profile tooling resin. The high perfor-
mance mechanical properties of the vinyl ester res-
in provides a laminate of quality and integrity with
superior surface quality.
APPLICATION
The MoldTru LPT-68000 was developed primarily to
build molds using the conventional open mold pro-
cess (spray up or hand lay up) at a room tempera-
ture. In some cases a vacuum molding process can
be used to obtain high glass content using tech-
nical fabrics. The low viscosity of this product pro-
vides good wet out of the laminate and air removal.
BENEFITS
MoldTru LPT-68000 has several advantages when
considering the performance of the polymer and
the reaction of the low profile during the mold con-
struction. Some of the advantages are:
Dramatic build time reduction
Up to five layers can be laminated at once.
Lower labor cost
Reduce the timing between layers
No surface distortion
The low shrinkage of the product increases
the dimensional stability of the laminate.
Master molds replication
The low exotherm together with a high HDT
provide a correct cure and stability of the
laminate. The low shrinkage improves the
surface quality.
Viscosity
The low viscosity helps the infusion flow
faster and wets the high glass content
laminate complete.
No print through
Low shrinkage and unique low profile
system helps to prevent glass print.
Typical Gel Time Properties
Test Unit of Measure Nominal
Gel Time, 1.25% MEKP-9 minutes 30.0-34.0
Gel to Peak minutes 12.0-16.0
Peak Exotherm F/ C 330/165
AOC World Headquarters
955 Highway 57 East, Collierville, TN 38017
+01 901.854.2800
AOC-Resins.com
SALES CONTACTS
NORTH AMERICA
Toll free: +1 866 319 8827
northamerica@aoc-resins.com
EUROPE
+44 1206 390415
europe@aoc-resins.com
INDIA
+44 1206 390415
india@aoc-resins.com
LATIN AMERICA
+01 863 815 5016
latinamerica@aoc-resins.com
AOC UK LTD.
+44 1206 390400
salesUK@aoc-resins.com
ASIA/AUSTRALIA
+44 1206 390415
asia@aoc-resins.com
MIDDLE EAST
+44 1206 390415
middleeast@aoc-resins.com
AOC is a registered trademark of AOC, LLC.
The information contained in this data sheet is based on laboratory data and field experience. We believe this information to be reliable, but do not guarantee its applicability to the user s process or
assume any liability for occurrences arising out of its use. The user, by accepting the products described herein, agrees to be responsible for thoroughly testing each such product before committing
to production. Our recommendations should not be taken as inducements to infringe any patent or violate any law, safety code or insurance regulation. This data sheet and its contents are the
confidential and proprietary information of AOC and it may not be modified altered deconstructed or presented in any other manner without the explicit authorization of AOC and/or its legal counsel.
PERFORMANCE GUID ELINES
A. Keep full strength catalyst levels
between 1.0% – 2.0% of the total res-
in weight.
B. Maintaining shop temperatures
between 65 F/18 C and 90 F/32
C and humidity between 40% and
90% will help the fabricator make a
high quality part. Consistent shop
conditions contribute to consistent
gel times.
SAFETY
See the appropriate Safety Data Sheet
for guidelines.
ISO 9001:2008 CERTIFIED
The Quality Management Systems at
every AOC manufacturing facility have
been certified as meeting ISO
9001:2008 standards. This certifica-
tion recognizes that each AOC facility
has an internationally accepted mod-
el in place for managing and assuring
quality. We follow the practices set
forth in this model to add value to the
resins we make for our customers.
FOOTNOTES
(1.) Based on tests at 23 C and 50% relative
humidity. All tests performed on unreinforced
cured resin castings. 1/4″ castings were pre-
pared using 2.8% MEKP-9, post cured for 5 hours
at 212 F/100 C using AOC test method X-12Ab.
(2.) The gel times shown are typical but may be
affected by catalyst, promoter and inhibitor con-
centrations and resin, mold and shop tempera-
ture. Variations in gelling characteristics can be
expected between different lots of catalysts and
at extremely high humidities. Pigment and fillers
can retard or accelerate gelation. It is recom-
mended that the fabricator check the gelling
characteristics of a small quantity of resin under
actual operating conditions prior to use.
Pub. LPT-68000
Effective Date: May 2017
Copyright 2017
MOLDTRU
LPT-68000 TOOLING RESIN
STORAGE STABILITY
This product is stable for three
months from the date of manufac-
ture when stored in the original con-
tainers, away from direct sunlight or
other UV light sources and at or be-
low 20 C (70 F). After extended
storage, some drift may occur in the
product viscosity and gel time.
During the hot summer months, no
more than two months stability at
86 F/30 C should be anticipated.
Storage in plastic totes made out of
materials such as polyethylene (PE)
or polypropylene (PP), will accelerate
gel formation and result in a signifi-
cantly reduced storage stability.
Storage of this resin outdoors in
translucent plastic totes may reduce
the storage stability to only a few
weeks. AOC cannot assume responsi-
bility for gel formation under these
storage conditions.