Pacast AG was founded in 1987 by Rudolf
Cvacho and Roger Bruhin and took over all the
monomer casting activities of EMS Chemie AG
and the production of their own Co-Catalysts
and Masterbatches.
Our technical manager R. Cvacho studied
chemistry in Bratislava and learned all about
monomer casting from the inventors of
monomer casting. He worked with EMS
Chemie AG in Domat/Ems during about 20
years where he was responsible for the
monomer casting and the training of the
monomer-customers.
Our sister-company PACAST Handels-AG deals
with chemical products.
About
What we offer…
Your experienced specialist for cast nylon
We are your consultant for all questions and
products for the process of cast nylon
(monomer casting) for the production of PA6,
PA12 und Co-Polymers PA6/12.
Leading producers of cast nylon in the whole
world are working with our products for many
years and are confident in our products and
expertise. They trust in our consulting and our
considerable know-how.
We have a wide range of co-catalysts, colorant
masterbatches and additives for all needs of
monomer casting. We hold customer-specific
trainings where the necessary basic and
enhanced knowledge can be learned for
getting better products.
We have the full assortment of products for
monomer casting.
Welcome to PACAST AG
Colouring - Masterbatches
Our masterbatches are reactive
colorants which will be fully
integrated in the cast nylon
macromolecules by
polymerisation. For the
production of these
masterbatches we use
absolutely homogenizeable
colorants and additives free of
cadmium and heavy metals.
This allows for an optimal
distribution in the final product,
even colouring and no
“bleeding-out” of the colour
pigments from the final product.
After addition of the
masterbatch into the melted
caprolactam there is no risk of
sedimentation even after hours
of storage.
All colorants will be delivered in
solid state with a melting point
of ~70°C. Because of this low
melting point, it gets easy
dissolved in the caprolactam.
Additives
PC-Co-Catalyst A
Our co-catalyst A is
recommended for casting parts
from 20 kg up to 1'000 kg.
Through a delay of the
polymerization time (60 – 70
Min) the pot life is ~10-15 min.
This allows the air trapped in
the melt during the pouring
process to escape and
guarantees a homogenous and
bubble free final product. With
this system some of our
customers pour parts of several
100 kg and up to two tons final
weight.
The co-catalyst A (activator) can
be combined with most of the
usual catalysts.
We will supply you with a
catalyst to suit your needs.
PC-Co-Catalyst S
The co-Catalyst S acts as a
cross-linking agent of the cast
nylon matrix. The result is
increased impact strength,
dimensional stability and an
increased crystallinity and
therefore also higher pressure
stability of the final product. The
cast nylon material polymerized
with co-Catalyst S needs no or
only short annealing.
The best temperature for the
solubility of the co-catalyst S in
caprolactam is between 135 und
138°C and after dissolving of
the co-catalyst S the
temperature can be reduced to
125°C.
The polymerization time is
between 20 and 30 minutes
depending on the concentration
of the co-catalyst S.
PC-Co-Catalyst B
Our co-catalyst B is a liquid
form of activator. This allows to
use a one-pot production
method, meaning both catalyst
and co-catalyst are added to
only one monomer melting
vessel. This co-catalyst is used
for casting quantities between
one and ten kilogram parts.
Co-catalyst B can be combined
with all usual catalysts. You will
need to anneal the final product
for several hours.
Consulting / Training
Monomercast-Training :
(5 days)
If you would like to get all the
necessary knowledge about the
process of monomer casting and
to ask all about your problems
then come to us. Here you will
get your answers and help. Our
training enables you to get a
trouble free production with as
little scrap as possible.
Our trainings are individual and
according to the knowledge and
requirements of the
participants. Developers,
process engineers, shop-floor
workers and production
managers have all received
invaluable pointers on how to
improve their approach and best
serve their customers.
We have educated most of the
leading cast nylon-producers.
Please ask for our training-
program.
Laurinlactam / Monomers
To increase the flexibility of cast
nylon we have developed a
system for the production of
cast-co-polyamide nylon 6/12.
The necessary raw material
monomer Laurinlactam 12 will
be distributed by our company.
The same monomer is also be
used for the production of cast
nylon 12.
Monomercastoil
We have developed a special
cast nylon-oil which can be
mixed with caprolactam. The
addition is very simple. The oil
can be added in both parts of
the melt without preheating.
The result for the final product
is that the lubrication effect will
be greatly increased and the
abrasion will be reduced. This
compares in performance to the
so-called Oilon products.
However, the PC-Monomercast-
Oil is clear and the colour of the
final product can be adjusted
with our masterbatch colorants
as desired in the one-step
production from monomer
directly to the final product.
PACAST AG
+41 81 533 15 15
Ragazerstrasse 25
CH-7320 Sargans
Switerzland