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US 2005/0239972 A1Published application
Polymer nano-strings
AssigneeBridgestone Corporation
InventorXiaorong Wang
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Abstract
A polymer nano-string composition is provided. The polymer nano-strings can include a poly(alkenylbenzene) core, and a surface layer comprising poly(conjugated diene). The nano-strings have a mean average diameter of less than about 100 nm and a length of greater than about 1 μm.
Claims20
A process for forming polymer nano-strings comprising:
- a. polymerizing alkenylbenzene and conjugated diene monomer in a hydrocarbon solvent to form a diblock polymer;
- b. forming a mixture including micelles of said diblock polymer;
- c. adjusting a concentration of the polymerization mixture until the solid content is between about 0.01 to 10% or between about 18 to 60%;
- and
- d. adding at least one cross-linking agent to the polymerization mixture to form said nano-strings having a poly(alkenylbenzene) core and a poly(conjugated diene) surface.
2 more elements
Dependencies are inferred from the claim text.