TPT November 2010

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November 2010 105 ›
THE problem of corrosion undoubtedly
causes the worst damage to plant
and equipment in the chemical and
pharmaceutical industries, involving the
responsibility of every manufacturer.
Arkema’s range of anti-corrosion products
makes for smoother plant operation.
Arkema’s Kynar® polyvinylidene
fluoride has emerged as one of the
market’s toughest thermoplastics in terms
of resistance to corrosion and to the
harshest of acids. The company is a
leading producer of polyvinylidene fluoride
resins. These resins are used in the lining
of tanks, in injection moulded parts for
fittings and valves, and in extruded parts
for pipes.
The company’s PVDF range has
outstanding properties for the chemical
and pharmaceutical industries. Kynar®
polyvinylidene fluoride (PVDF), the
homopolymer of 1,1-di-fluoro-ethene
(VF2), is a technical thermoplastic offering
excellent mechanical strength and chemical
stability, high abrasion resistance, and very
good thermal stability.
As a fluoropolymer, Kynar PVDF boasts
outstanding resistance to most chemicals
and solvents. It is also appreciated for its
low flame and smoke characteristics. This
unique balance of properties has marked it
out over the years in a number of sectors,
from prepainted metal structures for
architecture to high-purity equipment for
the micro-electronic and pharmaceutical
industries. Kynar resins are easy to
process using standard extrusion, injection
moulding or compression moulding
methods.
Kynar Flex® resins are a series of PVDF-
based fluoropolymers with higher flexibility
than conventional PVDF. Their properties
are similar to those of Kynar resins in terms
of purity and chemical resistance.
However, they feature unique qualities
of chemical compatibility with high pH
solutions, and superior impact strength at
ambient and colder temperatures.
Arkema has also recently developed a
new functionalised PVDF range, branded
Kynar ® ADX. These resins have high
reactivity and offer excellent adhesion
performance on a variety of substrates
(metal, plastic, glass, textile) without the
need for an adhesion primer. This makes
the product suitable for the manufacture
of composite structures that combine the
properties of Kynar with those of the
various substrate materials.
Kynar ADX thereby offers opportunities
for new applications in a number of markets.
Kynar ADX can be used in electrostatic or
in dip powder coating, when applied on
steel or aluminium without a primer.
The resin imparts excellent chemical
resistance to metal parts in highly corrosive
environments (eg paper, chemical
industries). This product can also be used
in coextrusion, for multilayer structures
obtained by combining Kynar® ADX with
most polymers. This process imparts
other properties (eg chemical stability, UV
resistance, barrier) to the polymers.
Arkema – France
Fax: +33 1 49 00 83 96
Email:
Website:
PVDF range of anti-corrosion solutions