Coatings World - April 2015

Grieve has introduced No. 915, a gas-fired, 650° F cabinet oven currently used for testing paint coupons. Its dimensions measure 26”W x 26”D x 38”H and 100,000 BTU/hr. are installed in a modulating natural gas burner, while a 1,000 CFM, 1-HP recirculating blower provides vertical upward airflow to the workload. This cabinet oven features an aluminized steel exterior, 6” thick insulated walls and Type 430 finish stainless steel interior. A 12”W x 8”H access hatch is installed in the main door of this oven. Also onboard No. 915 are a digital indicating temperature controller, a top-mounted control panel and all safety devices required by IRI, FM and NFPA Standard 86 for gas-heated equipment, including a 325 CFM,

1/3-HP powered forced exhauster.

Cardolite Introduces
Cashew Nutshell Liquid-
based Polyols for Coatings

Cardolite has introduced a comprehensive line of cashew nutshell liquid (CNSL) based polyols for adhesives, coatings, foam and elastomer applications. Polyols derived from CNSL have unique qualities compared to widely known polyester and polyether polyols, and other natural based polyols, the company stated.

Hydrophobicity is one key advantage provided by the long aliphatic side chain present in CNSL. This hydrophobicity reduces moisture sensitivity during cure with isocyanate and results in outstanding water resistance for increased durability of the final polyurethane product. Different from other renewable polyols obtained from soy and castor oil, CNSL based polyols have an aromatic structure that translates into excellent chemical and thermal resistance. Moreover, the combination of aromaticity and long aliphatic chain delivers hydrolytic stability and high tensile, compression, and flexural strength to CNSL-based polyols.

This new product line is comprised of
diols, and medium and high functionality
polyols. CNSL diols can be formulated
into flexible foams, elastomers and adhe-
sives and sealants or used as a building
block to produce polyurethane pre-poly-
mers. Medium and high functionality
Novolac and Mannich CNSL polyols are
recommended in rigid foam formulations
to enhance flame resistance, compression
strength and reduce cost of the overall for-
mulation by minimizing the use of expen-
sive catalysts and surfactants. Specially
modified high strength CNSL polyols can
be formulated in structural construction
and automotive adhesives to achieve op-
timum performance. Furthermore, light
color CNSL polyols have been developed
based on Cardolite’s new Ultra LITE pro-
cess technology. They have demonstrated
improved color stability suitable for in-
dustrial coatings and excellent chemical
resistance and mechanical properties to
meet strict requirements of high standard
polyurethane adhesives.

Charles Ross & Son Co.
Introduces Bow Tie
Dispersers for Mixing
Heavy Pastes

Charles Ross & Son Co. has introduced Ross Bow Tie Dispersers, also called High Viscosity Dispersers, which are designed for mixing heavy pastes and viscous liquids. Compared to other single-shaft agitators, the company said this economical Bow Tie Disperser is more robust and heavy-duty, capable of handling viscosities up to several hundred thousand centipoise.

Driven by an explosion-proof in-verter-duty motor, the bow tie agitator quickly wets out solids and incorporates them into a liquid vehicle, creating a very uniform consistency without running at high speeds. This type of mixer is also best suited for resuspending dense materials that have packed into layers during storage or transit.

An air/oil hydraulic lift raises and
lowers the agitator into the vessel. Safety
limit switches prevent operation of the
mixer while in the raised position or
without a vessel in place. All wetted parts
are stainless steel 304. As an option, the
Bow Tie Disperser may be supplied with
a vacuum-rated mix vessel complete with
heating/cooling jacket, thermocouple,
sight/charge ports on the vessel cover and
caster wheels for easy movement.

PANalytical Introduces New
Spectrometer

PANalytical has revealed a new type of analytical X-ray fluorescence (XRF) spectrometer. With up to four complementary technologies on one multi-functional XRF platform, the new Zetium is designed to “change the way scientists think about XRF analysis.” The measurement platform of Zetium holds both wavelength dispersive (WD) and energy dispersive (ED) cores for the first time in one instrument. Zetium can also include a small spot analysis tool for fast element distribution mapping, and the innovative THETA free lime channel for dedicated cement applications.

This unique combination of technologies not only matches the traditional needs of XRF users, but offers a range of new possibilities. For example, measuring ED- and WDXRF simultaneously collects all the data on a sample in one run, cutting experimental time in up to half compared to running two sequential analyses. For industry-specific challenges such as those found in cement production, the ability to make traditional XRF measurements and assess free lime in the same system delivers clear advantages. Importantly, whatever the application, Zetium is designed to set new standards in terms of analytical power, usability and sustainability, to users in process optimization, quality control and research. Zetium is the successor to PANalytical’s highly successful Axios range of spectrometers and this heritage of proven technology underpins the new analytical platform.