Coatings World - July 2014

Air Products has introduced two new superwetting surfactants – Dynol 977E and 979E for siding board coatings, adding to its portfolio for waterborne formulations. Specially designed to address the challenges facing formulators on airless-spray of siding board coatings, the new superwetting surfactants provide better coverage and leveling performance on rugged surfaces with equal or less dosage used in the formulations. Dynol 977E and 979E superwetting surfactants are optimized siloxane-based surfactants that can provide a superior balance of properties including high atomization, very low equilibrium and dynamic surface tension reduction, and good system compatibility. These low-odor products contain no added alkylphenol ethoxyl-ates (APEs) and are easy to handle. They complement Air Product’s existing non-sil-icone superwetting products, enabling the company to offer a complete portfolio of superwetting surfactants to help customers quickly solve the problems associated with coating difficult-to-wet substrates.

Alex Color Offers New
Line of APE Free, Zero
VOC Aqueous Pigment
Dispersions

The Alex Color Company announces the introduction of its new WZ series aqueous pigment dispersions. Available in a wide pallette of organic and inorganic piments, these dispersions are the latest additions to Alex Color’s surfactant and resin based dispersions for the water based coatings and ink industries. They continue Alex Color’s 33 year committ-ment to proiding our customers with high quality, enironmentally friendly products at competitive prices, with service that is second to none.

WACKER Develops
Dispersible Polymer
Powder for Tile Adhesives

WACKER has developed a novel dis-
persible polymer powder for modifying
cementitious and gypsum-based dry-mix
mortars. VINNAPAS 8620 E is based
on a terpolymer of vinyl chloride, vinyl
acetate and ethylene, and is ideal for the
formulation of high-quality, low-emission
tile adhesives. In the end product, the new
dispersible polymer powder ensures a
long open time and enhanced flexibility
combined with excellent tensile adhesion
strength, even after water or freeze/thaw
conditions. VINNAPAS 8620 E ensures
that tile adhesives adhere excellently to a
broad range of different surfaces, includ-
ing difficult ones such as fired tiles with
high densities and natural-stone products
– even after heat, water or freeze/thaw
conditions. The dispersible polymer pow-
der was developed for the formulation of
tile adhesives of categories C2E or C2ES1
and C2ES2 as per EN 12004 that feature
an extended open time and high flexibility.

Vacuum-rated High Speed
Dispersers From Ross

Ross Vacuum-rated High Speed Dispersers
are a family of tank-mounted and rais-
able mixers featuring a laser-cut saw-tooth
blade that runs to approximately 5,000 ft/
min. Also sometimes called a High Speed
Dissolver, this classic workhorse is primarily
used to incorporate dry powders into liquid
and disperse loosely bound agglomerates. It
imparts high levels of shear while produc-
ing vigorous flow and rapid turnover of low
to medium viscosity dispersions as high as
50,000 centipoise. In most applications, the
extent of deagglomeration is further opti-
mized under vacuum conditions which re-
veal tighter and more uniform particle size
distributions in shorter cycle times. Pictured
is a 600-gallon mix vessel designed for full
vacuum and equipped with a 20” diameter
disperser blade that is raised/lowered by
means of an air/oil hydraulic lift. The agi-
tator shaft is coupled to the dished-shaped
vessel cover via a single mechanical seal and
Viton O-rings. All wetted surfaces are stain-
less steel 316 polished to 150-grit finish.
Sight/charge ports, a vacuum port, and Type
J thermoprobe are installed on the cover. The
mix vessel is built with a 50-psig stainless
steel jacket for heating/cooling, a dished bot-
tom, flush discharge ball valve, large handles
and heavy-duty casters. Ross offers many
High Speed Disperser models from stock for
immediate delivery as well as custom-built
units. Available in various standard sizes
from ¾ to 500 HP, these economical mix-
ers can accommodate virtually any small or
large scale processing requirement.

Troy Introduces Polyphase S99 Low-Leaching, Diuron-Free Fungicide + Algaecide Troy Corporation provides manufacturers of paint and coatings with advanced broad-spectrum dry-film preservatives such as Polyphase 663, which delivers superior performance and cost-in-use when compared with other fungicide + algaecide products commercially available. Now, for manufacturers wishing to formulate with an alternative to the Diuron algaecide active used in Polyphase 663, Troy is introducing Polyphase S99, an advanced low-leaching, Diuron-free broad-spectrum fungicide + algaecide. S99 offers excellent performance, environmental responsibility, and low cost-in-use.

Polyphase S99 offers long-lasting coatings protection, as shown in exposure testing in climates prone to severe fungal and algal growth. “Troy developed Polyphase S99 to provide coatings manufacturers with an innovative alternative to Diuron that still offers performance and use benefits comparable to Polyphase 663,” said Troy’s Izzy Colon, vice president, Science & Technology. “Based on proven, world-leading performance preservative technologies IPBC, BCM, and Terbutryn, S99 is a low-leaching product formulated for water-based exterior paints, coatings, and stucco systems,” continued Colon.