Abstract: Thermoplastic compositions based on, in particular, polyamide resin(s) or alkenylaromatic resin(s), having improved fire resistance are disclosed. The compositions contain Sb2O3, melamine cyanurate and one or more polyols, the combination of which exhibits a synergistic effect on increasing the fire retardancy. These compositions can be used for the preparation of molded, extruded or injected articles, in the form of sheets or films, of composite materials and of powders for coating substrates. Further, the process for preparing the compositions is also disclosed.

Abstract: The present invention relates to flexible thermoplastic compositions having a polyamide matrix, a dispersed polyethylene phase, and flame-retardant agents distributed between the two phases. These compositions have good mechanical properties, improved fire resistance and resistance to solvents and optionally excellent dimensional stability when hot. They can be used as coverings for electrical cables, as pipes, or in the creation of objects obtained by molding, forming, or film-forming.

Abstract: A material is provided comprising a film carrying a layer of a silicon oxide, a film comprising a binder and a film comprising polyolefin, wherein said film comprising the binder further comprises a catalyst. The invention also relates to a package comprising this material and the use of a catalyst in a film comprising a binder arranged between a film carrying a silicon oxide layer and a polyolefin film, for improving adhesion.

Abstract: The present invention relates to thermoplastic polyamides and to thermoplastic elastomers based on polyamide with improved thermomechanical performance. They are obtained by grafting along the polymer chain with alkoxysilanes having at least one unsaturation, and especially vinyltrialkoxysilanes of formula CH.sub.2 .dbd.CH--Si--(OR).sub.3 where R represents an alkyl or an alkoxy-substituted alkyl group. The weight ratio of the silane to polyamide in the grafted polymer is generally between 0.1 and 5%. These grafted polyamides may be crosslinked by hydrolysis in steam at 100.degree. C. or by contact with water. The grafted and optionally crosslinked polyamides may be used for producing molded or extruded articles, such as tubes, jackets, single-layer and multilayer films and complex parts, and powder for coating substrates.

Abstract: The invention relates to mixtures of polymers including at least one halogen-containing polymer and compatibilized with a grafted aliphatic polyester. The compatibilizing agent may be, for example, a polycaprolactone grafted with maleic anhydride or glycidyl methacrylate.

Abstract: A material useful for manufacturing food packagings is formed from a film covered with silicon oxide and a polyolefin film, such that the binder arranged between the film covered with silicon oxide and the polyolefin film is selected from the group consisting of polyolefins grafted with unsaturated alkoxysilanes, polyolefins grafted with unsaturated epoxides, and copolymers of ethylene with at least one unsaturated epoxide.

Abstract: The invention relates to a material comprising a film covered with silicon oxide and a polyolefin film such that the binder arranged between the silicon oxide and the polyolefin film is a thermoplastic resin containing at least one hydroxyl functional group.This material is useful for manufacturing food packagings in the form of cartons.

Abstract: Polyolefin rubber which is an ethylene/propylene and/or 1-butene copolymer, which has a melt index of 0.3 to 15 dg/min and a relative density of 0.860 to 0.885, comprising 74-91 mol % of units derived from ethylene and 9-26 mol % of units derived from propylene and/or from 1-butene, characterised by a crystalline melting point J of 100.degree. to 125.degree. C. The process for obtaining this rubber consists in copolymerising, at a temperature of 150.degree.-300.degree. C. and at a pressure of 400-2000 bars, a gas stream containing 15-42% by vol. of ethylene and 58-85% by vol. of propylene and/or 1-butene, in the presence of a Ziegler-type catalyst system comprising at least one compound of a transition metal of groups IVB, VB, VIB and VIII of the Periodic Classification, and at least one organoaluminium compound and, if appropriate, in the presence of at least one chain transfer agent.

Abstract: Flame-retardant polymer compositions, well adopted, e.g., for the protective sheathing of electrical cables, comprise (a) at least one ethylene/carboxylic acid unsaturated ester copolymer (A), (b) advantageously, at least one ethylene/alkyl (meth)acrylate/unsaturated dicarboxylic acid anhydride terpolymer (B), (c) at least one copolymer of ethylene and at least one .alpha.-olefin (C), (d) advantageously, at least one low-density polyethylene (D), (e) at least one plasticized polynorbornene polymer (E) having a rubbery glass transition temperature, and (f) a major amount of a hydrated inorganic filler material.

Abstract: Flame-retarded polymer compositions comprising a hydrated inorganic filler, at least one ethylene-vinyl acetate copolymer and at least one copolymer of ethylene and at least one .alpha.-olefin, characterized in that they consist essentially of 120 to 240 parts by weight of hydrated inorganic filler per 100 parts by weight of a polymeric phase constituted:a) of 15 to 55 parts by weight of at least one ethylene-vinyl acetate copolymer (A) having a vinyl acetate content of between 20 and 50% by weight,b) of 25 to 62 parts by weight of at least one ethylene-alkyl (meth)acrylate-unsaturated dicarboxylic acid anhydride terpolymer (b),c) of 8 to 45 parts by weight of at least one copolymer of ethylene and at least one .alpha.-olefin (C) having a density of between 0.990 and 0.915 and a crystallinity level at least equal to 5%, andd) of 0 to 5 parts by weight of at least one low density polyethylene (D).

Abstract: Flame-retarded polymer compositions comprising a hydrated inorganic filler, at least one ethylene/alkyl (meth)acrylate copolymer and at least one copolymer of ethylene and of at least one .alpha.-olefin, which compositions consist essentially of 120 to 240 parts by weight of hydrated inorganic filler per 100 parts by weight of a polymer phase consisting of:(a) 30 to 75 parts by weight of at least one ethylene/alkyl (meth)acrylate copolymer (A) having a content of alkyl (meth)acrylate of between 1 and 50 mol %,(b) 10 to 30 parts by weight of at least one ethylene/alkyl (meth)acrylate/unsaturated dicarboxylic acid anhydride terpolymer (B),(c) 5 to 55 parts by weight of at least one copolymer of ethylene and of at least one .alpha.-olefin (C) having a density of between 0.865 and 0.915 and a degree of crystallinity equal to at least 5%, and(d) 0 to 5 parts by weight of at least one low-density polyethylene (D).Industrial articles comprising such a flame-retarded polymer composition.