New Surface Treatments and
Coating Options Offered On Ross Mixers
Charles Ross and Son Company now offers a variety of surface treatments, coatings and alternative materials on its full
range of mixing, blending, drying and dispersion equipment for the processing of
high-purity, sensitive, corrosive or abrasive products.
Pictured is a custom Dual-Shaft
Mixer equipped with a PEEK (
poly-etheretherketone) high speed disperser
and a two-wing Anchor agitator completely coated with black Teflon PFA, a
perfluoroalkoxy copolymer resin with a
high level of inertness. The wetted surfaces of the stainless steel vessel, cover
and charge ports are all PFA-coated as
well to prevent metal ion contamination. Designed for a high-purity electronic application, this vacuum-capable
inert mixer includes a recirculation filter system. Operators control and monitor the agitators, recirculation pump,
recipe menu, temperature, vacuum level
and data acquisition from a 10” color
touch screen.
Omnova Unveils Pliotec
HDT 12 Binder
Omnova Solutions unveiled its new
Pliotec HDT 12 binder designed for
the formulation of anticorrosion paint.
Omnova Solutions’ Hydrophobic
Dispersion Technology (HDT),
provides adhesion and water resistance properties, making Pliotec HDT
12 one of the preferred resins for the
formulation of glossy, anticorrosion,
also known as DTM (direct-to-metal)
paints.
The manufacturing process selected
by Omnova results in a hydrophobic
functional polymer with minimal amount
of free surfactants.
Anticorrosion paints based on
Pliotec HDT 12 display very low water
permeability and excellent corrosion resistance, without the need for inhibitive
pigments, according to the company.
Such water-based DTM paints are recommended for the finishing or renovation of portals, wrought iron or metal
sidings. They are characterized by a
high gloss level, with greater ageing resistance and color retention. They also
offer both mechanical and aesthetic
qualities (film without residual tack, increased impact resistance and a smooth
finish).
Pliotec HDT 12 provides excellent adhesion properties on all metals, ferrous or
non-ferrous, offering a real alternative to
solventborne anticorrosion coatings.
Paints based on Pliotec HDT 12 have
been shown to be environmentally preferred with low emissions of VOC and
compliant with the most up to date standards on Indoor Air Quality.
Cray Valley Hydrocarbon
Specialty Chemicals Offers
Water-based Surface
Treatments for Improved
Dispersion
Cray Valley Hydrocarbon Specialty
Chemicals (HSC) developed a cost-effective water-based application process
for minerals in filled polymer systems.
Pre-loading select non-halogenated
minerals with a functionalized liquid
polybutadiene (LPBD) improves dispersion and enhances a composite’s
mechanical properties, according to
the company. With a broad application
base, this process results in better adhesion to and coverage of mineral surfaces in non-halogenated composites.
When Ricon, a functionalized liquid
polybutadiene oligomer, or SM (styrene
maleic anhydride) is applied to minerals using an aqueous solution, interfacial surface tension decreases. Ductility
and flame resistance improve, along
with heat release rate (HRR) and rate of
smoke release (RSR). Compounds also
demonstrate a lesser tendency to burn
in line with a V-0 UL rating. All of the
above are characteristics of improved
dispersion of the filler.
Water-based surface applications
provide excellent film formers and allow formulators to use large quantities
of filler versus additive, which reduces
production costs. Leveraging non-halogenated materials at the industry level does not require significant changes
to a compound’s chemical structure
and offers an environmentally friendly
process for filled polymers.
Cytec Launches Additol
VXW 6503 N Universal
Wetting and Leveling Agent
New Additol VXW 6503 N universal
wetting and leveling agent from Cytec
Industries Inc. is a polyether modified siloxane that improves substrate wetting in
a wide variety of aqueous, solventborne
and solvent-free formulations, including
UV/EB curable formulations.
The specific siloxane tensile structure
used in Additol VXW 6503 N leads to
superior dynamic surface tension reduction and improved static surface tension
reduction, according to the company. As
a result, Additol VXW 6503 N provides
optimal substrate wetting and anti-cra-tering performance without contributing to foam stabilization or impacting
intercoat adhesion.
In addition, this performance can
be achieved at addition levels as low as
0.1 - 1.0 percent on total formulation,
and Additol VXW 6503 N can be incorporated at any stage of the production process. CW
