Tire with tread rubber composition which contains dual silica moieties
OwnerPaul Harry Sandstrom, Kuo-Chih Hua +2inventors
InventorsPaul Harry Sandstrom, Kuo-Chih Hua, Shingo Futamura, Kenneth Allen Bates
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Abstract
The invention relates to a tire having a tread of a cured rubber composition which contains dual silica moieties in a sense of containing both hydrophilic precipitated silica and in situ hydrophobated precipitated silica.
Claims19
A tire with a circumferential rubber tread including the running surface of the tire tread, of a rubber composition which contains dual silica moieties comprised of a combination of pre-hydrophobated precipitated silica and hydrophilic precipitated silica.
A method of preparation of a dual moiety precipitated silica reinforced rubber composition for a tire tread which comprises mixing a combination of pre-hydrophobated precipitated silica and hydrophilic precipitated silica with a rubber composition containing at least one conjugated diene-based elastomer without an addition of a silica coupling agent or alkoxysilane silica hydrophobtaining agent to the rubber composition;
- wherein said pre-hydrophobated precipitated silica is hydrophobated with a hydrophobtaining agent prior to its addition to said rubber composition.
Dependencies are inferred from the claim text.