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PolyOne and Nanocor form Strategic Alliance to Produce, Market Nanocomposite Plastics

January 9, 2003

CLEVELAND, and ARLINGTON HEIGHTS, Ill., Jan. 9 /PRNewswire-FirstCall/ --
PolyOne Corporation (NYSE: POL), a global leader in polymer services, and
Nanocor Inc., the largest supplier of nanoclays for plastics and a wholly
owned subsidiary of AMCOL International Corp. (NYSE: ACO), announced today
that they have formed a strategic alliance to manufacture and market
nanocomposites made from polyolefin, polyvinyl chloride and related polymers.

PolyOne will manufacture and market nanoclay concentrates and composites,
using Nanocor's products and technology. This technology promotes the
inclusion of nanometer-sized clays in plastics, yielding a number of
synergistic properties and attributes that were previously difficult to
achieve.

Nanocomposites are a new class of plastic compounds created by the
combination of nanoclays with neat, compounded or blended polymers. They can
be made by a multitude of processing technologies including injection molding,
extrusion molding, blow molding, extrusion and film casting. Nanoclays are
nanometer-sized clay particles. A nanometer is one-billionth of a meter in
length, or roughly one-ten thousandth the diameter of a human hair.

Nanocomposite technology principally improves stiffness, fire resistance
and gas barrier at lower weight than traditional additives. Nanocomposites
also promote greater heat stability and electrical dissipation. The
PolyOne/Nanocor alliance initially will focus on the strength and fire-
resistant properties of polyolefin plastics and related polymers such as EVA,
TPE, EPDM and nitriles.

Nanocor's superior technology, coupled with PolyOne's compounding
expertise, will yield cost-effective and repeatable solutions. Customers will
benefit from composites and concentrates that are easy to process and produce
lighter-weight products. Lighter plastics are attractive in many consumer
areas, especially automotive parts, electronic components, appliances and
office furniture.

PolyOne will manage all aspects of the sales, marketing and manufacturing
of nanoclay concentrates and composites, with assistance from Nanocor's sales
personnel. "Continuing investment in new products, services and technologies
to better serve the global marketplace is a strategic imperative at PolyOne,"
said Chief Technology Officer Roger W. Avakian. "In this spirit, we are very
pleased to join with Nanocor, the largest global supplier of nanoclays
specifically designed for plastic nanocomposites. This is a young, rapidly
developing field, and we are excited by the opportunity to work with a proven
innovator. We fully expect this collaboration to yield important advances in
nanocomposite technology."

In 2002, Nanocor received patents for polyolefin nanocomposites, and the
company has additional patents pending. Coverage includes nanoclay
formulations, methods for producing concentrates using these formulations and
procedures for dispersing concentrates in polyolefin matrices to create the
final compounds.

"Both PolyOne and Nanocor took an active interest in nanotechnology during
the early market stages," said Peter Maul, Nanocor president. "But what's most
exciting for us is that PolyOne's level of applications expertise is second to
none and complements Nanocor's strengths so well. Together, our companies can
accomplish more much faster than either of us working independently. PolyOne
brings great process expertise and a dimension of scale that is critical to
establish nanocomposites in this large-volume market."

In addition to manufacturing and sales activities, the alliance will
combine the research and development resources of the respective parties to
create new product variations with improved performance. Development work
will take place at PolyOne's Solution Center in Avon Lake, Ohio, and Nanocor's
Development Laboratories in Arlington Heights, Ill.

About PolyOne

PolyOne Corporation, with revenues approximating $2.6 billion, is an
international polymer services company with operations in thermoplastic
compounds, specialty resins, specialty polymer formulations, engineered films,
color and additive systems, elastomer compounding and thermoplastic resin
distribution. Headquartered in Cleveland, Ohio, PolyOne has employees at
manufacturing sites in North America, Europe, Asia and Australia, and joint
ventures in North America, South America, Europe, Asia and Australia.
Information on the Company's products and services can be found
at www.polyone.com .

About Nanocor

Nanocor, Inc. is a producer of nanoclays suitable for dispersion in
plastics. The company has developed patented technology for the production of
concentrates and creation of polyolefin nanocomposites. It has been actively
promoting its concentrates over a two year period and will continue to supply
a limited number of customers on a direct basis. All new business involving
polyolefins, polyvinyl chlorides and related polymers will be supplied through
the alliance. For more information about Nanocor visit www.nanocor.com .

Forward-looking Statement

In this release, statements that are not reported financial results or
other historical information are "forward-looking statements" within the
meaning of the Private Securities Litigation Reform Act of 1995. Forward-
looking statements give current expectations or forecasts of future events and
are not guarantees of future performance. They are based on management's
expectations that involve a number of business risks and uncertainties, any of
which could cause actual results to differ materially from those expressed in
or implied by the forward-looking statements. You can identify these
statements by the fact that they do not relate strictly to historic or current
facts. They use words such as "anticipate," "estimate," "expect," "project,"
"intend," "plan," "believe" and other words and terms of similar meaning in
connection with any discussion of future operating or financial performance.
In particular, these include statements relating to future actions,
prospective changes in raw material costs or product pricing or product
demand, future performance or results of current and anticipated market
conditions and market strategies, sales efforts, expenses, the outcome of
contingencies, such as legal proceedings, and financial results. Factors that
could cause actual results to differ materially include, but are not limited
to: (1) an inability to achieve or delays in achieving savings related to
restructuring programs; (2) delays in achieving or inability to achieve the
Company's strategic value capture initiatives, including cost reduction and
employee productivity goals, or achievement of less than the anticipated
financial benefit from the initiatives; (3) the effect on foreign operations
of currency fluctuations, tariffs, nationalization, exchange controls,
limitations on foreign investment in local businesses and other political,
economic and regulatory risks; (4) changes in U.S., regional or world polymer
and/or rubber consumption growth rates affecting the Company's markets; (5)
changes in global industry capacity or in the rate at which anticipated
changes in industry capacity come online in the polyvinyl chloride (PVC),
chlor-alkali, vinyl chloride monomer (VCM) or other industries in which the
Company participates; (6) fluctuations in raw material prices, quality and
supply and in energy prices and supply, in particular fluctuations outside the
normal range of industry cycles; (7) production outages or material costs
associated with scheduled or unscheduled maintenance programs; (8) costs or
difficulties and delays related to the operation of joint venture entities;
(9) lack of day-to-day operating control, including procurement of raw
materials, of equity or joint venture affiliates; (10) partial control over
investment decisions and dividend distribution policy of the OxyVinyls
partnership and other minority equity holdings of the Company; (11) an
inability to launch new products and/or services that strategically fit the
Company's businesses; (12) the possibility of goodwill impairment; (13) an
inability to maintain any required licenses or permits; and (14) an inability
to comply with any environmental laws and regulations: (15) a delay or
inability to achieve divestitures necessary to achieve targeted debt levels.

We cannot guarantee that any forward-looking statement will be realized,
although we believe we have been prudent in our plans and assumptions.
Achievement of future results is subject to risks, uncertainties and
inaccurate assumptions. Should known or unknown risks or uncertainties
materialize, or should underlying assumptions prove inaccurate, actual results
could vary materially from those anticipated, estimated or projected.
Investors should bear this in mind as they consider forward-looking
statements.

We undertake no obligation to publicly update forward-looking statements,
whether as a result of new information, future events or otherwise. You are
advised, however, to consult any further disclosures we make on related
subjects in our Forms 10-Q, 8-K and 10-K reports to the Securities and
Exchange Commission. You should understand that it is not possible to predict
or identify all such factors. Consequently, you should not consider any such
list to be a complete set of all potential risks or uncertainties.
SOURCE PolyOne Corporation


CONTACT: Dennis Cocco, Chief Investor & Communications Officer of
PolyOne Corporation, +1-216-589-4018; or Peter Maul, President of Nanocor,
+1-847-394-8844/

Web site: http://www.polyone.com

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