Invention Application
- Patent Title: PNEUMATIC TIRE
- Patent Title (中): 气动轮胎
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Application No.: US12622800Application Date: 2009-11-20
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Publication No.: US20110124771A1Publication Date: 2011-05-26
- Inventor: Paul Harry Sandstrom , Brad Stephen Gulas , David Mark Frantz , Steven Wayne Cronin , Tang Hong Wong , Michael Joseph Rachita
- Applicant: Paul Harry Sandstrom , Brad Stephen Gulas , David Mark Frantz , Steven Wayne Cronin , Tang Hong Wong , Michael Joseph Rachita
- Main IPC: C08J5/14
- IPC: C08J5/14

Abstract:
The present invention is directed to a pneumatic tire having a component comprising a vulcanizable rubber composition comprising, based on 100 parts by weight of elastomer (phr),(A) from about 60 to about 90 phr of a polymer comprising (1) a terminating group provided from a terminating compound XnSi(OR)mR′4-m-n wherein X is a chlorine atom, a bromine atom or an iodine atom, R is an alkyl group with from about 1 carbon to about 7 carbons, R′ is a alkyl group with from about 1 carbon to about 20 carbons, an aryl group, a vinyl group or a halogenated alkyl group, m is an integer from about 1 to about 4, n is an integer from about 0 to about 2, and a sum of n and m is from 1 to 4; (2) repeat units comprising: (a) a repeat unit provided from a conjugated diolefin monomer, and (b) a repeat unit provided from an amine monomer; (B) from about 40 to about 10 phr of polybutadiene having a microstructure comprised of about 96 to about 99 percent cis 1,4-isomeric units, about 0.1 to about 1 percent trans 1,4-isomeric units and from about 1 to about 3 percent vinyl 1,2-isomeric units; a number average molecular weight (Mn) in a range of from about 75,000 to about 150,000 and a heterogeneity index (Mw/Mn) in a range of from about 3/1 to about 5/1; and(C) from about 50 to about 150 phr of silica.
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