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:
Jan. 30, 2024
Filed:
Oct. 01, 2021
Totalenergies Onetech, Courbevoie, FR;
Centre National DE LA Recherche Scientifique (Cnrs), Paris, FR;
Université Claude Bernard Lyon 1 (Ucbl), Villeurbanne, FR;
Olivier Lhost, Havre, BE;
Yves Trolez, Arquennes, BE;
Anatoli Serghei, Villeurbanne, ER;
Hubert Lecocq, Villeurbanne, FR;
Philippe Cassagnau, Villeurbanne, FR;
TOTALENERGIES ONETECH, Courbevoie, FR;
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), Paris, FR;
UNIVERSITÉ CLAUDE BERNARD LYON 1 (UCBL), Villeurbanne, FR;
Abstract
The disclosure provides for a composite material suitable for use as EMI shielding material, remarkable in that it comprises a component A being a polymer resin being at least one amorphous polymer resin and/or at least one semi-crystalline polymer resin selected from polyethylene resin and/or polypropylene resin; from 15.0 to 60.0 wt. % of component B being at least one metal-coated particle based on the total weight of the composite material; and from 0.5 to 5.0 wt. % of component C being one or more dispersants based on the total weight of the composite material; wherein one or more dispersants are selected from fatty acids, fatty acid derivatives, ethylene bis stearamide, functionalized waxes, maleic anhydride-grafted polymers and any mixture thereof; wherein the blend of components A, B and C shows a density ranging from 0.8 to 2.0 g/cc. A process to produce such composite material is also described as well as an EMI shield article made from such composite material and the use of such composite material in an EMO shield article.