Patent ID: 8501859
Filing Date: 2013-08-06
Classification: B60C,C08K,C08L

Abstract:
1. A tire sidewall component comprised of an uncured rubber composition having a building tack property, where said uncured rubber composition has a water treated surface containing a combination of sorbitan monostearate, wherein said sorbitan monostearate contains a portion of said water, together with a specialized tackifying agent which comprises, based on 100 parts by weight rubber (phr); (A) a combination of natural cis 1,4-polyisoprene rubber and cis 1,4-polybutadiene rubber, (B) from about 45 to about 90 phr of particulate rubber reinforcing carbon black; wherein said uncured rubber composition contains a dispersion comprised of: (C) about 1 to about 10 phr of water containing sorbitan monostearate, and (D) about 3 to about 5 phr of a specialized tackifying resin; wherein said specialized tackifying resin is a vinyl monomer modified alkylphenol/formaldehyde resin comprised of a reaction product of an alkylphenol/formaldehyde resin and a vinyl monomer; wherein said alkylphenol for said specialized tackifying resin is at least one of tertiary octylphenol and tertiary butyl phenol, and wherein said vinyl monomer for said specialized tackifying resin is selected from styrene and alpha-methylstyrene and their mixtures.