LOW STYRENE ACRYLIC BONDING
POLYESTER RESIN
Typical Cast Mechanical Properties*
1 SEE BACK PAGE
Test Unit of Measure Nominal ISO Methods
Tensile Strength psi/MPa 11,600/80 ASTM D 638
Tensile Modulus psi/GPa 580,000/4.0 ASTM D 638
Tensile Elongation % 2.5 ASTM D 638
Flexural Strength psi/MPa 16,500/114 ASTM D 790
Flexural Modulus psi/GPa 620,000/4.3 ASTM D 790
Heat Distortion Temp. F/ C @ 264 psi 151/66 ASTM D 648
Typical Neat (Non-Filled) Liquid Properties*
2 SEE BACK PAGE
Version Gel Time Temp
Viscometer
Spindle
Speed
Viscosity
Thix
Index
Initiator
Level/Type
C431-PPC-18 18 mins 25. C
LV 3 @
6/60/6
400/2.3
1.25% MEKP-
925
*Typical properties are not to be construed as specifications.
DESCRIPTION
Altek C431-PPC-18 is AOC s new gen-
eration acrylic bonding resin. It is a
pre-promoted, thixotropic polyester
resin.
APPLICATION
Altek C431-PPC-18 is designed to be
used with filler and has been carefully
engineered to maximize filler loading
without compromising quality of fin-
ished parts. It is used for backing vacu-
umed formed acrylic.
BENEFITS
Unique design for quicker hard-
ness development, which speeds
up mold turnover and increases
rate of production
Excellent adhesive to formed acryl-
ic resulting in greater integrity of
the laminate and finished parts
Capable of higher filler loading
without loss of physical properties
insuring that as filler is increased,
the rate of cracking at demold
does not increase which maximiz-
es the end product
Designed for improved wet out and
roll out of the laminate
ALTEK C431-PPC-18
POLYESTER RESIN
AOC World Headquarters
955 Highway 57 East, Collierville, TN 38017
+01 901.854.2800
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SALES CONTACTS
NORTH AMERICA
Toll free: +1 866 319 8827
northamerica@aoc-resins.com
EUROPE
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europe@aoc-resins.com
INDIA
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india@aoc-resins.com
LATIN AMERICA
+01 863 815 5016
latinamerica@aoc-resins.com
AOC UK LTD.
+44 01206 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 commit-
ting 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.
ALTEK
C431-PPC-18 POLYESTER RESIN
PERFORMANCE GUIDELINES
A. Keep full strength catalyst levels
between 1.0% – 2.0% (1.25% mini-
mum with mechanical application)
of the total resin weight.
B. Maintaining shop temperatures be-
tween 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 condi-
tions contribute to consistent gel times
viscosity.
STORAGE STABILITY
Resins are stable for three months
from the date of manufacture when
stored in the original containers, away
from sunlight at no more than
70 F/21 C. After extended storage,
some drift may occur in 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), in particular trans-
lucent PE/PP, will accelerate gel for-
mation and result in a significantly
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.
APPLICATION GUIDELINES
Due to the excellent curing character-
istics of the Altek C431-PPC-18 resin,
complete all secondary bonding as
soon as possible. Exposing the lami-
nate to sunlight will result in severe
secondary bonding problems. After 24
hours of cure, it may be necessary to
abrade the laminate to insure good
secondary bonding, especially if the
surface of the laminate is resin rich.
Avoid low fiberglass content and resin
puddling with this product.
Caution:
The ability of an unsaturated polyester
resin to bond to acrylic is influenced by
many factors. Resin is only one of
these factors. The type and amount of
filler used, type and color of acrylic
used, and the conditions during the
thermoforming process are but a few
of the factors that effect the ability of
the resin to bond to the acrylic. There-
fore, it is vitally important that the fab-
ricators evaluate for themselves the
fitness of this product for their pro-
cess.
To insure high quality fabricated parts,
AOC strongly encourages fabricators to
utilize “Best Practices Guidelines” for
polyester resin, ABS and acrylic sheet.
SAFETY
See the appropriate Safety Data Sheet
for guidelines.
ISO 9001:2015 CERTIFIED
The Quality Management Systems at
every AOC manufacturing facility have
been certified as meeting ISO
9001:2015 standards. This certifica-
tion recognizes that each AOC facility
has an internationally accepted model
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 of at 77 F/25 C and 50%
relative humidity. All tests performed on unrein-
forced cured resin castings. Castings were post
cured.
(2.) The gel times shown are typical but may be
affected by catalyst, promoter, inhibitor concentra-
tion, resin, mold, and shop temperature. Variations
in gelling characteristics can be expected between
different lots of catalysts and at extremely high
humidities. Pigment and/or filler can retard or
accelerate gelation. It is recommended that the
fabricator check the gelling characteristics of a
small quantity of resin under actual operating
conditions prior to use.
Pub. C431-C SERIES NA
Effective Date: October 2019
Copyright 2019