US 12,234,341 B2
Conductive rubber compositions and articles composed of the same
Robert Vincent Dennis-Pelcher, Uniontown, OH (US); Junling Zhao, Hudson, OH (US); and Aaron Patrick Murray, Chardon, OH (US)
Assigned to The Goodyear Tire & Rubber Company, Akron, OH (US)
Filed by The Goodyear Tire & Rubber Company, Akron, OH (US)
Filed on Oct. 5, 2022, as Appl. No. 17/938,113.
Claims priority of provisional application 63/289,669, filed on Dec. 15, 2021.
Prior Publication US 2023/0183447 A1, Jun. 15, 2023
Int. Cl. C08K 3/04 (2006.01); C08K 7/06 (2006.01); C08L 7/00 (2006.01); C08L 9/08 (2006.01); C08L 47/00 (2006.01); H01B 1/18 (2006.01)
CPC C08K 3/04 (2013.01) [C08K 7/06 (2013.01); C08L 7/00 (2013.01); C08L 9/08 (2013.01); C08L 47/00 (2013.01); H01B 1/18 (2013.01); C08K 2201/005 (2013.01); C08K 2201/006 (2013.01); C08K 2201/011 (2013.01); C08L 2203/20 (2013.01)] 14 Claims
 
1. A conductive rubber composition comprising a rubber component and one or more electrically conductive carbon components, wherein:
the conductive rubber composition includes an uncured or cured electrical resistance at 23° C. less than about 10 MQ when formed into a wire about 10 inches (254 mm) long and 2 mm in diameter, and the conductive rubber composition comprises a blend of two or more rubber components;
the one or more electrically conductive carbon components comprise a blend of carbon black and a short carbon fiber, wherein the short carbon fiber is free of carbon nanotubes; and
the short carbon fiber is from about 5 phr to about 80 phr and the carbon black is from about 15 phr to about 70 phr.