New DuPont "Somos" 7100 Stereolithography Resin

From: MICHELLE L PAETZ 328-5428 (
Date: Wed Jul 02 1997 - 01:22:10 EEST

Wilmington, DE (USA), July 1, 1997 -- The DuPont Company today announced the new
Somos(R) 7100 series of epoxy resins for stereolithography that is water
resistant and has a high heat-deflection temperature. The first member of the
series, "Somos" 7100 is for use in Argon-ion UV laser stereolithography systems
such as 3D Systems SLA-500, EOS STEREOS MAX 600, EOS STEREOS MAX 400, Aaroflex
Solid Imager and Teijin Seiki SOLIFORM. A third generation epoxy, the "Somos"
7100 series was created to tolerate a wide range of humidity conditions during
and after build and to eliminate bubble formation.

The strong, rigid, highly accurate and water resistant "Somos" 7100 parts,
post-cured by heat, achieve high heat deflection temperatures greater than 100
degrees Celcius, elongation as low as 5% and impact strength of 0.55 Ft-lb/in.
"Somos" 7100 Series of epoxy resins will be compatible with all known secondary
processes, including silicone rubber moldings, vacuum casting and short run
injection molding.

Users of the new resin will notice a substantial improvement in down-facing
surfaces and overall improved part quality. Many of these features are
attributed to the research and development efforts made to optimize the
viscosity. Fewer structural supports are required, bubbles have been eliminated
and undistorted walls are thinner. Not only has product quality increased, but
productivity has further improved with faster photospeeds and shorter delays
compared to current epoxies.

DuPont provides the world's widest selection of solid imaging materials. DuPont
"Somos" resins for stereolithography have been optimized for Argon-ion,
Helium-Cadmium, and solid state UV laser systems, and range from the only
available flexible resins ("Somos" 2100 Series), to general purpose highly
transparent acrylate resins ("Somos" 3100 Series), second generation epoxy
resins ("Somos" 6100 Series) and now a third generation of epoxy resins ("Somos"
7100 Series). DuPont also provides powders for selective laser sintering, such
as the flexible elastomer powder "Somos" 201, now available from DTM
Somos(R) is a registered trademark of E. I. du Pont de Nemours and Company
STEREOS is a trademark of EOS GmbH, Germany.
SLA-500 is a trademark of 3D Systems, Inc.
SOLIFORM is a trademark of Teijin Seiki
FOR: DuPont Somos(R) Solid Imaging Materials
        Two Penn's Way, Suite 401
        New Castle, DE 19720 (USA)
        Patricia Ritchie, Accounts Manager
        Michelle Paetz, Technical Marketing Engineer
        TEL: (302) 328-5435
        FAX: (302) 328-5693

For sales outside North America, contact the following distributors for
DuPont Somos(R) Solid Imaging Materials:

        Pasinger Strasse 2
        82152 Planegg bei Munchen
        Contact: Johann Oberhofer
        Tel: (+49) 89 8 99 13 10
        Fax: (+49) 89 8 59 84 02

        SYMORE NV
        Kapeldreef 60
        3001 Heverlee
        Contact: Johan Pauwels
        Tel: (+32) 16 29 83 68
        Fax: (+32) 16 29 83 19

        DUPONT K.K.
        Arco Tower
        8-1 Shimomeguro 1-chrome
        Meguro-ku, Tokyo
        Contact: Takami Yoneda
        Tel: (+81) 3 5434-6148
        Fax: (+81) 3 3660-4174

        BEHAR & Cia. S.A.
        Esmeralda 740 Of. 1201
        1007 -- Buenos Aires
        Contact: Patricia Gazzia
        Tel: (+541) 322-2832
        Fax: (+541) 393-1086

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