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07-10-2008

Metallocene polypropylene resin

Stability with Geotextiles

Metallocene polypropylene resin

With a length of 33.7km, the Tamarins Road construction project on La Réunion in the Indian Ocean is intended to relieve congestion on the heavily frequented coast road. Construction engineers have used a nonwoven geogrid to stabilize two embankments up to 350 m in length and 4 to 5 m wide. A metallocene polypropylene resin manufactured by Total Petrochemicals in Brussels, Belgium, is used to produce the Bindim geotextile made by TenCate Geosynthetics France. These landscaped embankments provide the platform for the actual roadway.

Metallocenes represent the latest generation of catalysts, which are used in the production of polypropylene. This type of catalyst is also called single site as opposed to older multiple sites catalysts. Under controlled process conditions, it exhibits a very narrow molecular weight distribution, resulting in polymer chains with highly uniform lengths and properties. Various Metallocene products were specially formulated for the production of nonwovens by means of the spunbond process. Due to its low elongational viscosity, the material is ideal for the fast drawing of continuous filaments. Its low gel content and high product consistency prevent fiber breaks, which tend to disrupt production. Moreover, thanks to the high filament tenacity, Metallocene catalyzed resins are the first choice for applications requiring hard-wearing nonwovens.

Company profile

Total Petrochemicals A Division of S.A. PetroFina N.V.

Rue de l' Industrie 52
BE 1040 BRUXELLES
Tel.: +32 2 2889111
Fax: +32 2 2883369

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