Abstract: There is described a belt comprising a body made of a first elastomeric material, in which a plurality of longitudinal filiform resistant inserts is embedded, and a working surface coated by a coating fabric, advantageously the working surface consists of a toothing. The first elastomeric material comprises fibers which extend in a direction substantially perpendicular to the resistant inserts and substantially parallel to a surface defined by the axes of the resistant inserts.

Abstract: The invention relates to an elastomeric composition comprising a branched polymer obtained from a polymer selected from the group consisting of NBR, HNBR, XHNBR, EP(D)M, and maleized EPDM and from a compound adapted to form a bond at a bond of the polymer to form a side chain. This compound comprises a group Y comprising a perfluoroalkyl functional group and a functional group adapted to react with the double bond. Preferably, Y=F(CF2CF2)m/wherein m is in the range between 2 and 20; R is selected from the group consisting of a double bond C?C, a triple bond C?C, a functional alcoholic, carboxylic, esteric, acrylic, methacrylic group. The invention also relates to the use of a composition as a body compound for a drive belt and to the use thereof in an oil bath.

Abstract: There is described a belt comprising a body made of a first elastomeric material, in which a plurality of longitudinal filiform resistant inserts is embedded, and a working surface coated by a coating fabric, advantageously the working surface consists of a toothing. The first elastomeric material comprises fibres which extend in a direction substantially perpendicular to the resistant inserts and substantially parallel to a surface defined by the axes of the resistant inserts.

Abstract: The invention relates to an elastomeric composition comprising a branched polymer obtained from a polymer selected from the group consisting of NBR, HNBR, XHNBR, EP(D)M, and maleized EPDM and from a compound adapted to form a bond at a bond of the polymer to form a side chain. This compound comprises a group Y comprising a perfluoroalkyl functional group and a functional group adapted to react with the double bond. Preferably, Y=F(CF2CF2)m/wherein m is in the range between 2 and 20; R is selected from the group consisting of a double bond C?C, a triple bond C?C, a functional alcoholic, carboxylic, esteric, acrylic, methacrylic group. The invention also relates to the use of a composition as a body compound for a drive belt and to the use thereof in an oil bath.