The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2012
Filed:
Dec. 28, 2004
Anthony Bonnet, Beaumont le Roger, FR;
Fabrice Chopinez, Evreux, FR;
Pascal Sebire, Saint-Aubin le Vertueux, FR;
Karine Triballier, Saint Eloi de Fourques, FR;
Michael Werth, Bernay, FR;
Michaela Steng, Bernay, FR;
Anthony Bonnet, Beaumont le Roger, FR;
Fabrice Chopinez, Evreux, FR;
Pascal Sebire, Saint-Aubin le Vertueux, FR;
Karine Triballier, Saint Eloi de Fourques, FR;
Michael Werth, Bernay, FR;
Michaela Steng, Bernay, FR;
Arkema France, Colombes, FR;
Abstract
The present invention relates to a method for radiation grafting a compound by irradiation, that can be grafted onto a fluoropolymer, so as to prevent destabilization of the fluorinated polymer. Said method comprises the following steps: a) the fluoropolymer is mixed in the melted state thereof with a graftable compound; b) the mixture obtained in a) is converted into films, plates, granulates or powder; c) the products from step b) are subjected to photonic (γ) or electronic (β) irradiation in a dose of between 0.5 and 15 Mrad; and d) optionally, the products from step c) are washed and/or a degassed. According to said method, a stabilizing agent is added to the fluorinated polymer. Said stabilizing agent can be an antioxidant, a graftable metal salt, or a combination of the two. The invention also relates to structures comprising at least one layer of said mixtures and at least one layer of another material, and to the use of said structures to obtain a barrier effect. Said structures act as a barrier to a plurality of fluids, especially to petrol and to air-conditioning fluids, and can take the form of bottles, tanks, containers, pipes, and all kinds of recipients. They can also be transformed into films used to produce packaging.