November New Technology established for formaldehyde free EVA emulsion Sumitomo by ghostface


									                                                            November 19, 2002

    New Technology established for formaldehyde-free EVA emulsion

Sumitomo Chemical Co., Ltd. (“Sumitomo”) has developed a new polymerization
technology to produce “Sumikaflex”, a 100% formaldehyde-free ethylene-vinyl
acetate (EVA) emulsion, using a catalyst derived from a food additive.

EVA emulsion is used in wood adhesives, building and interior coating materials,
wallpaper, and other applications where there is a need for environmentally
friendly materials containing neither solvents nor plasticizers. Demand for
formaldehyde-free emulsion for residential-use adhesives and coatings has
increased in recent years, as formaldehyde has been identified as a common
cause of sick-house syndrome.

Sumitomo has already introduced this new feature in some products and,
applying the new polymerization technology, plans to offer all products as
formaldehyde-free by the end of this fiscal year.

In related news, Sumitomo has begun marketing Sumikaflex 7400, an EVA
emulsion of super high solid content offering high initial adhesive strength and
quick drying times enabled by a concentration exceeding 74% (the highest level
in the world). Sumitomo is also working to develop an ultra-high-ethylene EVA
emulsion (containing more than 50% ethylene by weight) for use as a polymeric
plasticizer, which could be applied for environmentally friendly adhesives
requiring high adhesive strength with plastic.

Sumitomo has also developed a new surfactant for use in all EVA emulsion
production as an alternative to the standard nonylphenol ethoxylates, which are
subject to the Pollutant Release and Transfer Register (PRTR) Law.

Sumika Chemtex Co., Ltd., a company in charge of EVA emulsion domestic
sales, has begun internet sales with a new concept (its business model patent
already applied for) at internationally competitive prices. Product information
such as MSDS and physical or other properties can be viewed (Japanese only)
on the following URL:
Sumitomo will continue to meet customer demands for environmentally friendly
EVA emulsions that are internationally competitive in performance and price.

For further inquiries, please contact:
General Affairs Dept., Sumitomo Chemical Co., Ltd.
TEL: +81-3-5543-5102

To top