The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 2014
Filed:
Dec. 20, 2006
James E. Hall, Mogadore, OH (US);
Sandra Warren, Saumur, FR;
Alberto Scurati, Milan, IT;
Xiaorong Wang, Hudson, OH (US);
James E. Hall, Mogadore, OH (US);
Sandra Warren, Saumur, FR;
Alberto Scurati, Milan, IT;
Xiaorong Wang, Hudson, OH (US);
Bridgestone Corporation, Tokyo, JP;
Abstract
Provided is a polymer nanoparticle comprising a core and a vulcanizable shell, wherein the core has a glass transition temperature (Tg) of at least about 150° C. Also provided is a method of preparing polymer nanoparticles with a core and a vulcanizable shell, comprising (a) in a liquid hydrocarbon medium, polymerizing conjugated diene monomers to produce a poly(conjugated diene) block and (b) copolymerizing the poly(conjugated diene) block with a mixture of mono-vinyl aromatic monomers and multiple-vinyl aromatic monomers to produce an aromatic block, wherein the core has a Tg of at least about 150° C. Also provided is a composition comprising (a) a rubber matrix; and (b) a polymer nanoparticle including a core and a vulcanizable shell; wherein the Tg of the core is at least about 150° C.