The invention relates to a multilayer structure comprising at least two layers:
 a layer, referred to as the inner layer, intended to be in contact with a fluid, comprising a composition comprising at least one polymer and not comprising any copper, and a layer, referred to as the outer layer, intended to be in contact with the air, comprising a composition containing at least one polymer and at least one copper-based stabilizer. The invention also relates to a pipe comprising such a multilayer structure, and also to its use for transporting or storing fluids.

Multilayer structure comprising at least one stabilized layer

Use of a composition comprising a base formulation of one or more alkyl esters of a C6- C16 carboxylic acid or mixtures thereof as a fuel composition is provided. The use of the fuel composition is specifically provided for use as a lamp fuel, a lighter fuel, and/or a fuel for cooking, heating or cooling. Specifically, use of a composition as a lamp fuel is provided, wherein the composition comprises by weight 35-45% C8 methyl esters, 25- 35% C10 methyl esters, 15-25% C12 methyl esters, and/or 5-15% C14 methyl esters. Also provided is a method for producing a fuel composition comprising the steps of a) providing a vegetable oil, b) preparing alkyl esters of carboxylic acids comprised in said vegetable oil by esterification and/or transesterification, c) optionally isolating one or more of said alkyl esters of said carboxylic acids, wherein said alkyl esters of carboxylic acids comprised in said vegetable oil and/or said one or more isolated alkyl esters constitute said fuel composition.

Fuel composition comprising alkyl ester

The invention relates to a multilayer structure comprising at least two layers:
a so-called internal layer intended to be in contact with a fluid, comprising a composition comprising at least one polymer and not comprising copper, and
a so-called external layer intended to be in contact with air, comprising a composition containing at least one polymer and at least one copper-based stabilizer. The invention also relates to a tube comprising such a multilayer structure as well as to its use for transporting or storing fluids.

Multilayer polyamide structure comprising one layer stabilised with an organic stabiliser and one layer stabilised with a copper-based stabiliser.

A diesel fuel based on ethanol is described, which comprises about 60 to about 90% (v/v) ethanol, up to about 20% (v/v) of a linear dialkyl ether with a chain length of about 10 to about 40 as well as mixtures thereof, and 0 to about 30% (v/v) combustion accelerator.

Diesel fuel based on ethanol

L'invention porte sur une structure multicouche comprenant au moins deux couches :- une couche, dite interne, destinee a etre en contact avec un fluide, comprenant une composition comprenant au moins un polymere et ne comprenant pas de cuivre, et- une couche, dite externe, destinee a etre en contact avec l'air, comprenant une composition contenant au moins un polymere et au moins un stabilisant a base de cuivre.L'invention porte egalement sur un tube comprenant une telle structure multicouche ainsi que sur son utilisation pour le transport de fluides.

Structure multicouche comprenant au moins une couche stabilisee

Vegetable oil diesel fuel consisting of: a) 60% to 90% by weight of soya oil, rapeseed oil, jatropha oil or sunflower oil or mixtures thereof, b) 10% to 40% by weight of a fatty acid alkyl ester mixture based on coconut oil and/or palm kernel oil, and optionally c) 0.01% to 1% by weight of antioxidants from the class of the sterically hindered phenols.

Thomas Wilharm

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Vegetable oil diesel fuel