Abstract: A polymer film for packaging at least one microorganism culture medium includes at least one layer of polyethylene terephthalate and at least one heat-sealing layer, such as polyethylene. The polymer film has an average water vapour permeability of between 10.0 g/m2×24 hours and 80.0 g/m2×24 hours.

Abstract: A polymer film for packaging at least one microorganism culture medium includes at least one layer of polystyrene and at least one heat-sealing layer. The polymer film has an average water vapor permeability of between 30.0 g/m2×24 hours and 140.0 g/m2×24 hours, preferentially between 70.0 g/m2×24 hours and 120.0 g/m2×24 hours.

Abstract: The invention relates to a functionalized diene elastomer composed: a) of a diene elastomer functionalized, at the chain end or in the middle of the chain, by a tin functional group, exhibiting a monomodal distribution of molecular weights before functionalization and a polydispersity index before functionalization of less than or equal to 1.3, b) of a diene elastomer star-branched with a tin compound, exhibiting a monomodal distribution of molecular weights before star-branching and a polydispersity index before star-branching of less than or equal to 1.3, and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a non-tin-functional diene elastomer, the said diene elastomers a), b) and c) being, before optional functionalization or optional star-branching, the same in nature.

Abstract: A polymer film for packaging at least one microorganism culture medium includes at least one layer of polystyrene and at least one heat-sealing layer. The polymer film has an average water vapour permeability of between 30.0 g/m2×24 hours and 140.0 g/m2×24 hours, preferentially between 70.0 g/m2×24 hours and 120.0 g/m2×24 hours.

Abstract: A polymer film for packaging at least one microorganism culture medium includes at least one layer of polyethylene terephthalate and at least one heat-sealing layer, such as polyethylene. The polymer film has an average water vapour permeability of between 10.0 g/m2×24 hours and 80.0 g/m2×24 hours.

Abstract: The present invention relates to a diene rubber composition reinforced with an inorganic filler comprising a thermoplastic polymer bearing, at at least one end, a silanol or silyl ether functional group. The presence of the functional thermoplastic polymer makes it possible to improve the compromise of performances, which are the handling and the grip, of a tire having a tread that is based on such a composition.

Abstract: The invention relates to a functionalized diene elastomer composed a) of a specific block copolymer functionalized, at the chain end or in the middle of the chain, by a tin functional group, b) of a specific block copolymer star-branched by tin and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a specific non-tin-functional block copolymer.

Abstract: Reinforced rubber composition, exhibiting improved hysteresis, based on at least (a) an elastomeric matrix predominantly based on natural rubber, (b) a reinforcing filler and (c) a specific polyimine compound in a small proportion, preferably ranging from 1 to 5 mmol per 100 g of elastomer. This rubber composition is intended, for example, for the manufacture of a semi-finished rubber product intended for the tires of motor vehicles.

Abstract: The invention relates to a block diene elastomer corresponding to the following formula: where: n and m are each an integer of greater than or equal to 0, such that n+m?1 and n+m?20, each A block is composed of a polybutadiene, each B block is composed of a diene elastomer, the molar content of units resulting from conjugated dienes of which is greater than 15%, the B blocks being identical to one another, X is an organic or inorganic group which can comprise a functional group which interacts with a reinforcing filler, the number-average molecular weight Mn1 of each A block varies from 2 500 to 20 000 g/mol, the number-average molecular weight Mn2 of each B block varies from 80 000 to 350 000 g/mol, and the content of 1,2- linkages in each A block is between 1 and 20%.

Abstract: The invention relates to a block diene elastomer corresponding to the following formula: where: n and m are each an integer of greater than or equal to 0, such that n+m?1 and n+m?20, each A block is composed of a polybutadiene, each B block is composed of a diene elastomer, the molar content of units resulting from conjugated dienes of which is greater than 15%, the B blocks being identical to one another, X is an organic or inorganic group which can comprise a functional group which interacts with a reinforcing filler, the number-average molecular weight Mn1 of each A block varies from 2 500 to 20 000 g/mol, the number-average molecular weight Mn2 of each B block varies from 80 000 to 350 000 g/mol, and the content of 1,2-linkages in each A block is between 1 and 20%.

Abstract: The present invention relates to a diene rubber composition reinforced with an inorganic filler comprising a thermoplastic polymer bearing, at at least one end, a silanol or silyl ether functional group. The presence of the functional thermoplastic polymer makes it possible to improve the compromise of performances, which are the handling and the grip, of a tyre having a tread that is based on such a composition.

Abstract: The invention relates to a functionalized diene elastomer composed a) of a specific block copolymer functionalized, at the chain end or in the middle of the chain, by a tin functional group, b) of a specific block copolymer star-branched by tin and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a specific non-tin-functional block copolymer.

Abstract: The invention relates to a functionalized diene elastomer composed: a) of a diene elastomer functionalized, at the chain end or in the middle of the chain, by a tin functional group, exhibiting a monomodal distribution of molecular weights before functionalization and a polydispersity index before functionalization of less than or equal to 1.3, b) of a diene elastomer star-branched with a tin compound, exhibiting a monomodal distribution of molecular weights before star-branching and a polydispersity index before star-branching of less than or equal to 1.3, and c) of a content of less than 15% by weight, with respect to the total weight of the functionalized diene elastomer, of a non-tin-functional diene elastomer, the said diene elastomers a), b) and c) being, before optional functionalization or optional star-branching, the same in nature.

Abstract: The present invention relates to a Petri dish, intended for receiving an agar culture medium for microorganisms, including a base receiving said culture medium and a lid capable of being positioned on the base, said base and said lid being substantially circular, said Petri dish being characterised in that the base includes at least one means intended to avoid the retraction of the culture medium, said means projecting and being positioned on the periphery of the base.

Abstract: The present invention relates to a single-layer polymer film, intended to be used for packaging articles having an extended shelf life, said film being composed of a cast polyamide sheet, covered, on one of its faces, with a heat-sealable coating, comprising polyvinyl chloride (PVC) and/or polyvinylidene chloride (PVDC), so that said film has an average permeability between 35 g/m2/24 hours and 110 g/m2/24 hours. It also relates to a process for producing said film. It additionally relates to a pouch obtained from said film, said pouch being particularly suitable for packaging articles having an extended shelf life, especially microorganism culture media in dishes.

Abstract: Reinforced rubber composition, exhibiting improved hysteresis, based on at least (a) an elastomeric matrix predominantly based on natural rubber, (b) a reinforcing filler and (c) a specific polyamine compound present in a proportion of between 0 and 7 mmol per 100 g of elastomer. This rubber composition is intended, for example, for the manufacture of a semi-finished rubber product intended for the tires of motor vehicles.

Abstract: The present invention relates to a single-layer polymer film, intended to be used for packaging articles having an extended shelf life, said film being composed of a cast polyamide sheet, covered, on one of its faces, with a heat-sealable coating, comprising polyvinyl chloride (PVC) and/or polyvinylidene chloride (PVDC), so that said film has an average permeability between 35 g/m2/24 hours and 110 g/m2/24 hours. It also relates to a process for producing said film. It additionally relates to a pouch obtained from said film, said pouch being particularly suitable for packaging articles having an extended shelf life, especially microorganism culture media in dishes.