Pneumatic tire

A technology for pneumatic tires and treads, used in special tires, tire parts, tire treads/tread patterns, etc.

Inactive Publication Date: 2014-01-01
THE GOODYEAR TIRE & RUBBER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has traditionally been difficult to improve the wear characteristics of tires without sacrificing their wet skid resistance and traction characteristics

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0220] In this example, five rubber compounds were compared. Samples 1 and 2 represent control samples. Sample 3 represents the invention.

[0221] The elastomers were compounded in multiple mixing steps with standard amounts of conventional curatives and processing aids as indicated in Table 1 (all amounts in phr) and vulcanized using a standard vulcanization cycle (170°C for 10 minutes). Various physical properties of the vulcanized samples were evaluated according to standard testing procedures as indicated in Table 2. Tires with treads made from the compounds of Samples 1 to 3 were tested for various performance criteria as shown in Table 3 (values ​​normalized to Control = 100).

[0222] Table 1

[0223]

[0224] 1 Sprintan® SLR6430 SSBR, 40% styrene, 14% vinyl, Tg (OE) = -29°C, available from Styron Schkopau

[0225] 2 Tufdene® E680 SSBR, 34% styrene, 38% vinyl, Tg(OE) = -25°C, purchased from Asahi Chemical

[0226] 3 Polybutadiene made with neodymium...

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Abstract

A pneumatic tire having a tread comprising a rubber composition comprising, expressed as parts by weight per 100 parts by weight of elastomer (phr), 100 phr of a solution-polymerized styrene-butadiene rubber with a bound styrene content of from 20 to 50 percent by weight, a vinyl 1,2 content of from 10 to 40 percent by weight based on the rubber weight, and a Tg of from -40ºC to -10ºC; 5 to 60 phr of a low PCA process oil having a polycyclic aromatic content of less than 3 percent by weight as determined by the IP346 method; 90 to 150 phr of silica having a CTAB specific surface area (S CTAB ) of between 40 and 525 m 2 / g, and a BET specific surface area (S BET ) of between 45 and 550 m 2 / g; 10 to 20 phr of sulfur containing organosilicon compound; and 5 to 30 phr of a polyterpene resin is disclosed. Preferably, the rubber composition further comprises less than 10 phr of carbon black.

Description

[0001] Background of the invention [0002] It is highly desirable for tires to have good wet skid resistance, low rolling resistance and good wear characteristics. It has traditionally been difficult to improve the wear characteristics of tires without sacrificing their wet skid resistance and traction characteristics. These properties depend largely on the dynamic viscoelasticity of the rubber used in the manufacture of tires. [0003] In order to reduce rolling resistance and improve tread wear characteristics of tires, rubbers with high resilience have traditionally been used in the manufacture of tire tread rubber compounds. On the other hand, in order to improve the wet skid resistance of tires, rubbers that suffer from large energy losses have generally been used in tire treads. To balance these two viscoelastically inconsistent properties, a mixture of various types of synthetic and natural rubbers is commonly used in tire treads. For example, various mixtures of sty...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08K13/02C08K3/36C08K5/548C08K3/04B60C1/00
CPCB60C1/00C08L9/06B60C1/0016B60C11/04C08J2325/04C08K3/00C08L23/18C08J3/24C08L7/00
Inventor P.P.斯泰纳R.姆鲁克K.舒尔梅斯特C.康斯J.J.D.德尔维尔
Owner THE GOODYEAR TIRE & RUBBER CO
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