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US 11,441,006 B2Granted
Rubber composition for tires including carbon nanotubes, and method for producing same
AssigneeKorea Kumho Petrochemical Co., Ltd.
InventorsNam Sun Choi, Dong Hoon Oh, Sang Hyo Ryu, Chung Heon Jeong
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Abstract
An embodiment of the present invention provides a rubber composition for tires and a method for producing same, wherein the rubber composition for tires includes: carbon nanotubes including structural defects on at least a portion of the surface and having a thermal decomposition temperature equal to or less than 600° C.; and a rubber matrix.
Claims13
A rubber composition for a tire, comprising:
- carbon nanotubes having structural defects on at least a part of their surfaces and a pyrolysis temperature of 600° C. or less.
A method of preparing a rubber composition for a tire, comprising:
- (a) preparing carbon nanotubes, which have structural defects on at least a part of their surfaces and a pyrolysis temperature of 600° C. or less, using a catalyst containing a metal component according to the following formula and having a hollow structure with an outer wall thickness of 0.5 to 10 μm;
- and (b) mixing the carbon nanotubes and a rubber:
- Ma:Mb=x:y <Formula>
- wherein Ma includes two or more metals selected from Ni, Co, Mn, Cr, Mo, V, W, Sn and Cu, Mb includes one or more metals selected from Mg, Al, Si and Zr, and x and y represent the mole fractions of Ma and Mb, respectively, in which x+y=10, 2.0≤x≤5.5, and 4.55≤y≤8.0.
1 more element
Dependencies are inferred from the claim text.