Abstract: Compositions based on ?-caprolactone polymer, comprising at least one ?-caprolactone polymer and calcium carbonate. Process for preparing these compositions, which are used for manufacturing articles, in particular films, preferably obtained by extrusion blow-moulding or by flat-die extrusion.

Abstract: The invention concerns thermoplastic aliphatic polyester compositions characterized by a melt flow index (RMFI) ranging between 1.1 and 2.5. The invention also concerns a method for preparing said compositions which are used for making films, foams, flasks or thermoformed products. The resulting films obtained from said compositions are used for making litter bags, films for agricultural use, packaging films, shrouds, diaper drawers and adhesive films.

Abstract: Compositions based on &egr;-caprolactone polymer, comprising at least one &egr;-caprolactone polymer and calcium carbonate. Process for preparing these compositions, which are used for manufacturing articles, in particular films, preferably obtained by extrusion blow-moulding or by flat-die extrusion.

Abstract: Process for manufacturing a blown film essentially consisting of an aliphatic polyester, according to which: (1) the polyester is synthesized from at least one cycloaliphatic ester, with the intervention of an initiator comprising at least one metal trialkoxide and/or metal tetraalkoxide, in an extrusion device; (2) the polyester is extrusion blow-moulded, immediately after it has been synthesized in the said extrusion device, fitted for this purpose with an extrusion blow-moulding die, with a swelling ratio of at least 2.5. The invention also relates to a film essentially consisting of an aliphatic polyester, which can be obtained according to the process of one of the preceding claims, in which the modulus of longitudinal elasticity (LE) and the modulus of transverse elasticity (TE) and the longitudinal shrinkage (LS) and transverse shrinkage (TS), these shrinkages being measured at a temperature about 5° C.

Abstract: A poly-.epsilon.-caprolactone film whose weight-average molecular mass is equal to at least 75,000 g/mol having a modulus in tension of at least 600 MPa in the transverse and longitudinal direction and a shrinkage not exceeding 1% in both directions below the poly-.epsilon.-caprolactone melting zone. The process for producing the poly-.epsilon.-caprolactone film comprises online extrusion of the poly-.epsilon.-caprolactone through a die having a temperature not exceeding 160.degree. C. immediately following its polymerization using aluminum trialkoxide as initiator. The films according to the invention are suitable for producing films for packaging, for the protection of produce or for diapers.

Abstract: The invention relates to polymeric compositions comprising at least one polyolefin, at least one thermoplastic starch and at least one ionic compound, the latter being present in a content such that the concentration of anions and of cations in the composition is from 0.002 to 5 mol/kg. It also relates to the master mixture used for the manufacture of these compositions and containing the thermoplastic starch and the ionic compound. The compositions are suitable, in particular, for the production of mono- or multilayer films which can be used, especially, in the paper-making industry.