Patent ID: 7423089
Filing Date: 2008-09-09
Classification: B60C,C08J,C08L

Abstract:
1. A tire having an outer visible sidewall layer of a sulfur cured rubber composition comprised of a parallel phase mixed rubber composition; wherein said parallel phased mixed rubber composition is prepared by a process which comprises: (A) forming a first rubber composition by blending EPDM rubber, particulate rubber reinforcing filler and sulfur curative comprised of elemental sulfur; (B) forming a second rubber composition comprised of at least one conjugated diene-based elastomer which a cis 1,4-polyisoprene rubber, followed by (C) blending said first rubber composition with said second rubber composition; wherein said EPDM rubber is provided as a combination of: wherein said particulate reinforcing filler is comprised of at least one of rubber reinforcing carbon black, precipitated silica and exfoliated clay platelets; wherein the weight ratio of said first EPDM to said second EPDM is in a range of from about 10/90 to about 90/10, and, wherein said non-conjugated diene for said EPDM is selected from ethylidene norbornene, dicyclopentadiene and trans 1,4-hexadiene.