Elf Antar France

Societe Nationale Elf Aquitaine

Elf France

Elf Exploration Production

Elf Antar France Tour Elf-2 Place De La Coupole

Elf Exploaration Production

Patrick Turello

Laurent Germanaud

Jean-Pascal Planche

Gilbert Marie

Claude Lacour

Pascal Nicol

Pierre Chaverot

Patrick Azorin

Nguyen Truong Dinh

Patrice Vegny

Jean Pascal Planche

Nguyen Truong-Dinh

Herve Nabet

Compositions produced by forming a homogenous mass consisting of a bitumen matrix wherein a cross-linked and/or functionalized elastomer produced in situ from a precursor elastomer is dispersed in a uniform manner and makes up 0.5-30% of the weight of the bitumen matrix. The bitumen matrix is created by associating 95%-20 wt. % non oxidized bitumen having a penetrability of 20-900 and 5-80 wt. % oxidized bitumen having a penetrability of 10-90. The compositions can be used as bitumen binders in the production of coverings.

Method for the production of cross-linked and/or functionalized bitumen/polymer compositions and use of said compositions in coverings

Bitumen/polymer compositions with improved stability and their

Method for preparing bitumen/polymer compositions and use thereof

Method for preparing reinforced multigrade bitumen/polymer and use of

Elastomer functionalized by grafted carboxyl or ester groups and its

Preparation of bitumen/polymer compositions and use thereof

The present invention relates to the preparation of antioxidant additives to lubricants and to their use in lubricating compositions. The additives according to the invention have the formula:

Nitrogenous additives with an antioxidant action and lubricating

The invention relates to additives to lubricants resulting from the condensation of a primary or secondary amine and/or of an alkylene polyamine with a copolymer containing vicinal carboxylic groups. Derivatives of phenothiazine, or naphthylamine and of diphenylamine are employed in most cases as alkylene polyamine. These compounds can be employed as multifunctional additives to lubricants.

Additives to lubricants resulting from the condensation of an alkylene

The invention provides polymeric compounds resulting from the condensation of a primary amine having one phenolic group in its molecule with a copolymer of carboxylic acid functions. The copolymer is formed by copolymerization of an unsaturated monocarboxylic acid with at least one derivative of such a acid or by grafting of an unsaturated acid on a hydrocarbon polymer. These compounds can be especially used as multifunctional additives to lubricants.

Polymeric compounds especially useful as additives to lubricants and

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Francheville, France

Patrick Turello