Societe Chimique Des Charbonnages S.a.

Elf Atochem S.a.

Norsolor

Claude Stein

Akio Ueda

Satoru Isomura

Daniel Duouenne

Daniel Duquenne

Andre Marbach

Hitoshi Nagai

Process for the removal of organic pollutants prevalent on a liquid or solid surface by sprinkling a polymer chosen from polybicyclo(2.2.1.) heptene-2 and polymethyl-5-bicyclo(2.2.1) heptene-2. The polymer is first agglomerated using a plasticizing agent. The process is used for the decontamination of water ways.

Process for absorbing organic polluting products

Decontaminating article comprising a preagglomerated, powdered polymer of bicyclo[2.2.1]-2-heptene or its methyl derivative in at least one fine-mesh textile bag. The bag is at least partially filled with the polymer. The decontaminating article can be used to absorb a liquid contaminating product, in particular petroleum hydrocarbon.

Article and process for absorbing contaminating products

Articles having shape recovering properties and methods of using them are disclosed. An article is formed from a composition containing a norbornene polymer by forming said polymer into an article having a first shape, then deforming the article in the solid state to a second shape and cooling the article to a first temperature at or below the glass transition temperature of the polymer to retain said second shape, and finally heating said article to a temperature above the first temperature to recover the first shape.

Articles having shape recovering properties and a method for using it

Polynorbornenes are cured with isocyanates optionally in the presence of polyols to yield elastomeric products having improved mechanical properties, particularly improved compression moduli and residual set while retaining the desired rebound elasticity values.

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Gouvieux, France

Claude Stein