公开(公告)号：US5843249A

公开(公告)日：1998-12-01

申请号：US612467

申请日：1996-03-07

Applicant: Jennifer Lyn Ryba ,  Michael Brendan Rodgers ,  Stanley Michael Mezynski

Inventor： Jennifer Lyn Ryba ,  Michael Brendan Rodgers ,  Stanley Michael Mezynski

IPC: B60C1/00 ,  C08L7/00 ,  C08L21/00 ,  B60C11/00

CPC classification number: B60C11/04 ,  B60C1/0016 ,  B60C11/005 ,  B60C11/0306

Abstract: The invention relates to a truck or bus tire with a rubber tread of cap/base construction where the tread cap is composed of an emulsion polymerization prepared styrene/butadiene copolymer elastomer with a relatively random styrene content (E-SBR-A). Such E-SBR-A, in its uncured state, also has a relatively low Tg. In one aspect, the tire tread's tread cap may also be a blend of elastomers such as cis 1,4-polybutadiene and/or natural rubber together with said E-SBR-A and wherein the tread base elastomer is composed primarily of natural cis 1,4-polyisoprene rubber. In another aspect of the invention, said tread cap has a tread design composed of at least three circumferential continuous ribs designed to be road contacting, said ribs independently separated by continuous, circumferential grooves.

Abstract translation: 本发明涉及具有帽/基础结构的橡胶胎面的卡车或母线轮胎，其中胎面帽由具有相对无规苯乙烯含量（E-SBR-A）的乳液聚合制备的苯乙烯/丁二烯共聚物弹性体组成。 在其未固化状态下的这种E-SBR-A也具有较低的Tg。 在一个方面，轮胎胎面的胎冠也可以是弹性体如顺式1,4-聚丁二烯和/或天然橡胶与所述E-SBR-A的共混物，其中胎面基弹性体主要由天然顺式1 ，4-聚异戊二烯橡胶。 在本发明的另一方面，所述胎冠具有由设计为道路接触的至少三个圆周连续肋构成的胎面设计，所述肋独立地由连续的圆周凹槽分开。