Elf Atochem S.a.

Atofina

Arkema Inc.

Atofina S.a.

Enterprise Jean Lefebvre

Patrice Perret

Marius Hert

Thibaut Montanari

Alain Bouilloux

Jacques Thomasset

Chrystelle Guibouin

Yoshiyuki Miyaki

Didier Roumilhac

Jacques Komornicki

Regis Jacquemet

Jerome Maillet

Jean Lebez

Yves Le Du

R&eacute;gis Jacquemet

Kentaro Shiojiri

Christelle Guibouin

Bernard Brule

Sabine Gazeau

Satoshi Tada

Hiroshi Mohri

Guillaume Montignac

Lucien Murino

Beatrice Ladouce

A multilayer structure of, in succession, a metal layer or a metallized-substrate layer, a layer of a polypropylene-based binder extrusion-coated at a rate of more than 100 m/min. and optionally a polypropylene layer, the metal or metallized layer and the binder layer being made non-delaminable by heat treating the structure. The extrudable binder contains by weight: (A) 5 to 30% of a copolymer of ethylene and one or more comonomers chosen from the group of carboxylic acid esters, vinyl esters and dienes in particular the ethylene/alkyl (meth)acrylate/maleic anhydride terpolymer; (B) 40 to 93% of a stretchable polypropylene; and (C) 2 to 30% of a polypropylene functionalized by an unsaturated carboxylic acid anhydride, especially maleic anhydride; the MFI of the composition being between 10 and 50 g/10 min. (at 230&#xb0; C./2.16 kg). the multi-layer structure is useful for the production of packages.

Structure comprising a binder layer non-delaminable with respect to a metallized substrate and peelable with respect to a polypropylene substrate

Schockproof polyester-injected parts

The present invention relates to a multiphase thermoplastic composition consisting of a mixture (I) including at least one ethylene polymer (A) which has units derived from unsaturated epoxy and at least one thermoplastic resin (B) partly encapsulated by the said ethylene polymer (A), the said mixture (I) being dispersed in a matrix of thermoplastic resin (C).

Multiphase thermoplastic compositions

The invention relates to a thermoplastic composition comprising at least one polymer (M) forming a matrix in which are dispersed at least one polymer (S) and at least one polymer (K) and such that its tensile strength is greater than that of a composition comprising only (M) and (S), the proportion by weight of (M) being the same.

Flexible thermoplastic resins having improved tensile strength

The invention relates to a thermoplastic composition comprising at least one polymer (M) forming a matrix in which are dispersed nodules of (K), nodules of (K) entirely or partly encapsulated in at least one polymer (S) and nodules of (S) and such that the nodules of (K) entirely or partly encapsulated in (S) are smaller than the nodules of (S).

Thermoplastics with improved flexibility and transparency

The present invention relates to a metal surface coated with a thermoplastic polymer, the coating exhibiting a peel strength at 130&deg; C. (according to DIN 30 670) which is higher than 400 N/5 cm. This value can be obtained by placing between the metal and the thermoplastic a layer of epoxy resin of Tg higher than 120&deg; C. against the metal and then a layer of polypropylene-based binder. The invention is particularly useful for coating the external surface of pipes.

Polymer-coated metal surfaces

Multiphase thermoplastic resin compositions

Flexible thermoplastic resins with improved tensile strength

The invention relates to injected components based on polyamide resin (A) and on at least one copolymer (B) of ethylene and of an unsaturated epoxide, the copolymer (B) being obtained by copolymerization or by grafting the epoxide. The copolymer (B) is advantageously an ethylene/alkyl (meth)acrylate/glycidyl (meth)acrylate copolymer. The melt flow index of the compositions containing (A) and (B) is greater than the ratio of the melt flow index of (A) over 0.175 times the weight percentage of (B).

Impact-resistant injected polyamide components

The present invention relates to mixtures of bitmen, of powdered rubber waste and of at least one copolymer (A) of an alpha-olefin and of at least one unsaturated epoxide, such that:

Mixtures of bitumen, of powdered rubber waste and of polymer, employed

The invention relates to impact-resistant injection mouldings based on polyamide resin (A) and on a disperse phase whose particles have a number-average diameter greater than 0.4 .mu.m, a volume-average diameter greater than 1 .mu.m and such that more than 50% by volume of the particles are larger than 1 .mu.m The disperse phase may consist of a mixture including at least one copolymer (B) of ethylene and of an unsaturated epoxide and of at least one polyolefin (C).

Polyamide injection mouldings which include an impact strength modifier

The invention provides a coating for a metal surface comprising (i) a primer able to gel and set, (ii) an adhesive and (iii) a thermoplastic polymer, in which said adhesive contains a catalyst, as well as metal objects, particularly pipes, provided with this surface coating, and a method for applying the surface coating.

Coating for metal surfaces and method for implementing it

The invention relates to compositions including at least one polyamide (A) and at least one copolymer (B) of ethylene and of at least one unsaturated carboxylic anhydride or acid, such that the impact/fluidity (IF) value of the compositions including 90 parts of (A) per 10 parts of (B) is higher than 1.5 in the case of the compositions containing essentially no glass fibres and such that the IF value of the compositions including 60 parts of (A) per 10 parts of (B) and of glass fibres is higher than 0.9; the IF value is defined as the ratio of the product (i) of the Izod notched impact at 23.degree. C. multiplied by the MFI (Melt Flow Index) of the composition including (A) and (B) to the product (ii) of the impact multiplied by the MFI of the same composition but not including (B).

Compositions based on a high-impact polyamide

Bitumen compositions

Growing community of inventors

Serquigny, France

Patrice Perret