US 7,538,159 B2
Nanoparticles with controlled architecture and method thereof
Xiaorong Wang, Hudson, Ohio (US); Victor J. Foltz, Akron, Ohio (US); and Pat Sadhukhan, Akron, Ohio (US)
Assigned to Bridgestone Corporation, Chuo-ku, Tokyo (Japan)
Filed on Dec. 16, 2005, as Appl. No. 11/305,281.
Prior Publication US 2007/0142559 A1, Jun. 21, 2007
Int. Cl. C08F 279/00 (2006.01)
U.S. Cl. 525—313  [525/332.2] 11 Claims
 
1. Polymer nanoparticles, which have a controlled architecture selected from the group consisting of nano-necklace and nano-cylinder; and which comprise a core polymerized from multiple-vinyl-substituted aromatic hydrocarbons, a shell polymerized from alkyl-substituted styrene monomer, and a styrene monomer layer between the core and the shell;
wherein the styrene monomer and alkyl-substituted styrene monomer form diblock copolymers.