Torlon® PAI Powders for Coatings and Adhesives - Solvay Plastics

Torlon ®
PAI Powders for Coatings
and Adhesives
Torlon ® AI-10, AI-10 LM, AI-30, AI-50, 4000T and 4000TF
Torlon ® polyamide-imides (PAI) provide excellent adhesion,
flexibility, thermal stability, and chemical resistance to
high- performance coatings and adhesives.
Torlon AI-10
Torlon AI-10 powder has an impressive record of proven
performance in high-temperature coatings and adhesives.
These include electrical wire coatings, corrosion-resistant
coatings, non-stick cookware coatings, and industrial
low-friction coatings.
Torlon AI-10 is soluble in dipolar aprotic solvents such as
N-methyl pyrrolidone (NMP), dimethyl acetamide (DMAC),
dimethyl formamide (DMF) and dimethyl sulfoxide (DMSO)
to at least 35 % solids. Mixtures of these solvents with
other diluents are possible. Cast solutions are thermally
cured up to 250 °C to 300 °C (480 °F to 570 °F) to achieve
maximum performance properties. For more information,
please see our Technical Bulletin entitled, “Torlon AI-10
Coatings”.
Torlon AI-10 LM
Torlon AI-10 LM is similar to Torlon AI-10 in that it is
produced using the same monomers and polymerization
system. However, the manufacturing process has been
optimized to reduce the amount of residual methylene
dianiline (MDA) monomer to below the 1,000 ppm
action level specified in various hazard communication
regulations.
Torlon AI-10 LM can be substituted for Torlon AI-10
without any changes in formulation or process. Coatings
based on the Torlon AI-10 or AI-10 LM polymer yield
durable, abrasion-resistant, thermally-stable films.
Torlon AI-30
Torlon AI-30 is the water-soluble analog of Torlon AI-10
and consists of 35 % solids, 63 % water and 2 % NMP.
It is made water soluble by forming an ammonium salt
with the amic acid groups on the polymer backbone.
Aqueous-based solutions made with Torlon AI-30
have inherently low VOCs, which helps end users meet
stringent environmental regulations. Cast solutions are
thermally cured at temperatures up to 250 °C to 300 °C
(480 °F to 570 °F) for maximum performance properties.
Torlon 4000T, 4000TF
Torlon 4000T differs from AI-10 in that it is made from
different diamines and has a greater degree of imidization.
Methylene dianiline (MDA) is not used in the manufacture
of Torlon 4000T resins. Similar to Torlon AI-10, this
material is soluble in dipolar aprotic solvents such as
NMP, DMAC, DMF, and DMSO to at least 35 % solids.
Cast solutions are thermally cured up to 250 °C to 300 °C
(480 °F to 570 °F) to achieve maximum performance
properties.
It is available in four powder grades, 4000T-LV, 4000T-MV,
4000T-HV, and a finer particle size version, 4000TF. Torlon
4000TF is a fine powder with 95% of the particles less
than 75 microns. Torlon 4000TF should be used when
a defined particle size is important.
Torlon AI-50
Torlon AI-50 is the water soluble analog of 4000TF.
It is similar to Torlon AI-30 in solids composition, yet
offers a lower viscosity and the associated processing
advantages. Cast solutions are thermally cured up to
250 °C to 300 °C (480 °F to 570 °F) for maximum
performance properties.
Technical Bulletin
Specialty Polymers

Table 1: Typical Properties (1)
Appearance
AI-10 AI-10 LM AI-30 AI-50 4000T-LV 4000T-MV 4000T-HV 4000TF
yellow
powder
yellow
powder
wet yellow
powder
wet yellow
powder
yellow
powder
yellow
powder
yellow
powder
fine yellow
powder
Solids content, % 90 92 35 35 99 99 99 99
Solution viscosity, 800 (2) 850 (2) 7000 (3) 42,000 (3) 85,000 (3) 7,000 (3)
25 % in NMP, cP
Solution viscosity,
650 (2) 20 (2)
7 % in water, cP
Acid number,
mg KOH/g of polymer
80 82 125 125 20 15 10 20
(1) Property values for individual batches will vary within specification limits. Values shown are typical for uncolored resin; colorants
may alter values.
(2) Measured at 25 °C
(3) Measured at 40 °C
Pigments and Additives
Pigments and additives can be used in conjunction with
Torlon coating resins to produce special purpose coating
and adhesive formulations. Suitable additives of this type
include heat-stable organic and inorganic pigments, fillers,
and certain epoxy and fluoropolymer copolymers. Due to
the inherent color of Torlon coating resins, care must be
taken if white or very pale shades are to be successfully
formulated.
To prevent the absorption of unwanted moisture, all
pigments should be ground in closed milling equipment.
Likewise, hydroscopic additives, such as fibers,
copolymers,etc, should be dried to appropriate moisture
levels prior to being incorporated into the formulation.
Application
Torlon ® PAI-based coatings can be effectively applied by
spray, roll, spin, or curtain techniques. Usually, dry film
thicknesses from 10 µm to 20 µm are readily achieved
in a single coating pass. Greater film thicknesses can be
acheived by applying multiple coats. Regardless of the
method employed, it is essential to assure appropriate
preparation of the substrate prior to application of coating.
Once complete, application equipment should be purged
of coating and cleaned with a true solvent.
Standard Packaging and Labeling
Torlon powdered resins are packaged in lined fiber drums
containing 70 kg (154.35 pounds). Individual packages
will be plainly marked with the product number, color,
lot number, and net weight.
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Material Safety Data Sheets (MSDS) are available by emailing us or contacting your sales representative. Always consult the appropriate MSDS
before using any of our products. Neither Solvay Specialty Polymers nor any of its affiliates makes any warranty, express or implied, including
merchantability or fitness for use, or accepts any liability in connection with this product, related information or its use. Some applications
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