Polyphenylene ether resin compositions for emi...

Details Polyphenylene ether resin compositions for emi... Polyphenylene ether resin compositions for emi...

H - Electricity

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31/154, 400/6304

H01B 1/22 (2006.01) C08K 3/04 (2006.01) C08K 3/08 (2006.01) C08L 71/12 (2006.01) H01B 1/24 (2006.01) H05K 9/00 (2006.01)

Patent

CA 1180543

POLYPHENYLENE ETHER RESIN COMPOSITION FOR EMI ELECTROMAGNETIC INTERFERENCE SHIELDING ABSTRACT OF THE DISCLOSURE Compositions or composites comprising a polyphenylene ether-styrene resin blend or composition are disclosed which have electromagnetic shielding properties so that when the compositions are used for electronic equipment components or housings they provide shielding against electromagnetic interference referred to as EMI. The composites eliminate the secondary treatments which have been used heretofore to provide these shielding properties, such as the application of electrically conductive silver, nickel, copper and graphite coatings, or the use of metal screens. The novel compositions of a polyphenylene ether-styrene blend contain as a conductive material, which attenuates the EMI, aluminum flakes, or a combination of aluminum flakes with carbon fibers or with a highly conductive carbon black, or a combination of carbon fibers with conductive carbon black, or carbon fibers per se.

412186

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