US 11,655,355 B2
Graphene as additive for rubber compounds and products
Douglas Paschall, Rancho Santa Margarita, CA (US); and Adel F. Halasa, Akron, OH (US)
Assigned to AKRON POLYMER SOLUTIONS, INC., Rancho Santa Margarita, CA (US)
Filed by Akron Polymer Solutions, Inc., Rancho Santa Margarita, CA (US)
Filed on May 11, 2022, as Appl. No. 17/662,865.
Claims priority of provisional application 63/187,073, filed on May 11, 2021.
Prior Publication US 2022/0363874 A1, Nov. 17, 2022
Int. Cl. C08L 9/00 (2006.01); C08K 3/04 (2006.01); C08L 23/22 (2006.01)
CPC C08L 9/00 (2013.01) [C08K 3/042 (2017.05); C08L 23/22 (2013.01); C08K 2201/005 (2013.01); C08L 2205/035 (2013.01)] 19 Claims
 
1. A composition comprising:
butyl rubber;
carbon black;
naphthenic oil;
aromatic hydrocarbon resin;
aliphatic hydrocarbon resin;
phenolic tackifier;
accelerator;
stearic acid;
zinc oxide;
sulfur; and
graphene, wherein the graphene has a thickness of less than about 3.2 nm, a particle size of between about 50 nm and about 10 μm, and contains greater than about 95% carbon.