Abstract: The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

Abstract: The present invention concerns a process for the manufacture of marked cellulose acetate fibres, an apparatus for marking cellulose acetate fibres, a process for the detection of at least one information item on marked cellulose acetate fibres or on products comprising marked cellulose acetate fibres, a process for the manufacture of a tow bale comprising marked cellulose acetate fibres, a tow bale, a tow, a filter and a cigarette comprising marked cellulose acetate fibres.

Abstract: The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

Abstract: The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

Abstract: The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

Abstract: The present invention concerns a process for the manufacture of marked cellulose acetate fibres, an apparatus for marking cellulose acetate fibres, a process for the detection of at least one information item on marked cellulose acetate fibres or on products comprising marked cellulose acetate fibres, a process for the manufacture of a tow bale comprising marked cellulose acetate fibres, a tow bale, a tow, a filter and a cigarette comprising marked cellulose acetate fibres.

Abstract: Highly cohesive composite materials, formed of at least one polymer and at least one compound selected from among the mineral oxides, silicoaluminates and activated carbon, have: a number median particle size of at least 150 ?m; a pore volume (Vd1), constituted of pores of diameter ranging from 3.6 to 1000 nm, of at least 0.4 cm3/g; and a cohesion index CIN, equal to the ratio (number median particle size after an air pressure stress of 4 bar)/(number median particle size without air pressure stress (0 bar)), greater than 0.40. Such composite materials are useful, e.g., as liquid supports, catalyst supports, additives or for liquid or gas filtration, in particular in cigarette filters.

Abstract: The present invention relates to polymer compositions comprising at least one basic additive, and processes comprising at least one process step to obtain the polymer composition or articles comprising the polymer composition. The polymer composition generally displays an enhanced biodegradability.

Abstract: Highly cohesive composite materials, formed of at least one polymer and at least one compound selected from among the mineral oxides, silicoaluminates and activated carbon, have: a number median particle size of at least 150 ?m; a pore volume (Vd1), constituted of pores of diameter ranging from 3.6 to 1000 nm, of at least 0.4 cm3/g; and a cohesion index CIN, equal to the ratio (number median particle size after an air pressure stress of 4 bar)/(number median particle size without air pressure stress (0 bar)), greater than 0.40. Such composite materials are useful, e.g., as liquid supports, catalyst supports, additives or for liquid or gas filtration, in particular in cigarette filters.

Abstract: The invention concerns polyester filaments and method for manufacturing same. More particularly it concerns a filament made of glycol ethylene polyterephtalate or polynaphtalate having high mechanical properties, and a method for stretching polyester filaments. It is obtained by a stretching process comprising two steps including a first step in which a low stretching ratio is applied, to cause minimal crystallization of the polymer and, a second step with a high stretching ratio. The global stretching ratio can reach values higher than 12. The filament has in particular an expanded elastic range that enables the improvement of its useful properties, for instance for manufacturing screen printing grids.