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US 10,479,853 B2Granted
Surface-treated carbon nanotube and resin composition
AssigneeAsahi Kasei Chemicals Corporation
InventorsAya Takagiwa, Teruaki Sakuma, Yasukazu Shikano, Kazuya Noda
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Abstract
Provided is a surface-treated carbon nanotube having few surface fractures, not reducing the molecular weight of the resin to be mixed and having excellent extrudability. In the surface-treated carbon nanotube, the thermal reduction amount at 600° C. in a nitrogen atmosphere is 0.2 to 40%, the surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) is 1.5 to 40 atm % and the surface sulfur concentration is less than 0.1 atm %.
Claims21
A surface-treated carbon nanotube containing a compound represented by any one of formula (1) to formula (4):
- further containing a compound represented by formula (5) or formula (6):
- where n1 is an integer of 2 to 400,
- where n2 is an integer of 2 to 650, and
- wherein a total content of a compound represented by formula (5) or formula (6) in the surface-treated carbon nanotube is 2.0 to 40 mass %;
- wherein
- a thermal reduction amount at 600° C. in a nitrogen atmosphere is 0.2 to 40%;
- a surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) is 10 to 40 atm %;
- and
- a surface sulfur concentration is less than 0.1 atm %.
6 more elements
Dependencies are inferred from the claim text.