WIRE)--Feb. 1, 2005--Carbon Nanotechnologies Inc. (CNI)
CNI can provide gram to kilogram quantities of double-wall
Double-wall carbon nanotubes behave similarly to single-wall
carbon nanotubes but have unique property characteristics
for certain applications.
CNI has early intellectual property for growing small-diameter
carbon nanotubes on supported catalyst.
Carbon Nanotechnologies Inc. (CNI) announced today that
it has expanded its pilot plant capability to provide
double-wall carbon nanotubes to the market. Double-wall
carbon nanotubes behave similarly to single-wall carbon
nanotubes but have unique property characteristics for
some applications. The technology to produce double-wall
carbon nanotubes is part of the intellectual property
developed by Dr. Richard Smalley and licensed exclusively
to CNI by Rice University in 2001.
"Even though single-wall
carbon nanotubes have become somewhat of a gold standard
product, the properties of double-wall carbon nanotubes
can make them very interesting for certain applications,"
said Rick Smalley, chairman of CNI and University
Professor at Rice University.
CNI began supplying single-wall
carbon nanotubes on a developmental basis in 2000
when the company was formed and has expanded that
capability in subsequent years. As CNI worked with
its more than 500 customers, it became apparent that
other small-diameter carbon nanotubes have certain
advantages for specific end uses. As a result, CNI
has tailored its production capability and broadened
its product slate to include double-wall carbon nanotubes
and varying mixtures containing single-wall and double-wall
nanotubes. CNI produces a wide array of small-diameter
carbon nanotube products and can now provide double-wall
carbon nanotubes in gram to multiple kilogram quantities.
CNI's entire product catalog can be viewed at http://www.cnanotech.com/pages/store/6-0_online_store.html.
carbon nanotubes can be produced by a variety of process
routes, the preferred route is thought to be growth
on supported catalyst. Rick Smalley's research in
1998 demonstrated catalysts and conditions and has
become the basis of CNI's effort to scale-up the production
of double-wall carbon nanotube products," said
Bob Gower, president and CEO of CNI.
One unique property of single-wall
and double-wall carbon nanotubes is their ability
to self-assemble into ropes. Similar to other polymeric
materials, these ropes can have crystalline, semi-crystalline
and amorphous regions. The ability to control these
rope structures is an attribute that customers are
recognizing as important for their applications. The
ability to tailor diameters and create mixed morphologies
substantially broadens the property envelope of small-diameter
carbon nanotubes, which can be viewed as nested single-wall
nanotubes. For example, a single-wall carbon nanotube
having a diameter of 2 nanometers will be less stiff
than a double-wall nanotube of the same diameter.
Furthermore, the outer tube of a double-wall nanotube
can be functionalized, leaving the inner tube pristine.
Small-diameter carbon nanotubes
are an example of a nanotechnology that is now reaching
the commercial arena. These nanostructures comprise
large molecules of carbon, cylindrical in form, about
1-3 nanometers (billionths of a meter) in diameter,
and hundreds to thousands of nanometers long. As individual
molecules, single-wall carbon nanotubes have a tensile
strength that is 100 times that of high-strength steel
at about one-sixth the density of steel. They conduct
electricity and heat extremely well, and many believe
that they represent the next revolution in polymer
CNI has over 100 patents and
patent applications issued or in various stages of
prosecution. About 1200 patent claims have issued
thus far, and the pending patents include an additional
about 4000 claims. This patent portfolio includes
about 650 composition of matter claims, more than
40 of which have been issued or allowed to date.
The company has more than 500
customers worldwide and has an exclusive relationship
with Sumitomo Corporation for marketing and distribution
of CNI products in Japan.
Tom Pitstick, 281-492-5884
Nobuo Aoki, +81 (3) 51664535
Source: Carbon Nanotechnologies