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US 11,643,529 B2Granted
Graft polymers for dispersing graphene and graphite
AssigneeExxonMobil Chemical Patents Inc.
InventorsAndy H. Tsou, Hillary L. Passino
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Abstract
Disclosed herein are graft polymers having a copolymer backbone and polycyclic aromatic hydrocarbon branches for use as a nanofiller dispersant and methods for making the same. Also disclosed are elastomeric nanocomposite compositions comprising a halobutyl rubber matrix, nanoparticles of graphite or grapheme, and the graft polymer. Such elastomeric nanocomposite compositions are suitable as tire innerliners or innertubes.
Claims7
A polymer comprising:
- (a) a copolymer backbone comprising units derived from an isoolefin having from 4 to 7 carbons and an alkylstyrene;
- and
- (b) one or more branches comprising a polycyclic aromatic hydrocarbon,
- wherein the one or more branches are directly bonded to an aromatic moiety of the copolymer backbone.
1 more element
Dependencies are inferred from the claim text.