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Butyl rubber additives for improved tire tread properties

一种轮胎胎面、橡胶的技术，应用在特殊轮胎、轮胎零部件、运输和包装等方向

Active Publication Date: 2022-05-03
EXXONMOBIL CHEM PAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Nanoprene achieves only limited improvements in wet traction

Method used

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  • Butyl rubber additives for improved tire tread properties
  • Butyl rubber additives for improved tire tread properties
  • Butyl rubber additives for improved tire tread properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0042] According to another embodiment of the invention, the rubber composition comprises, for example, 40-70 phr (parts by weight per percent of total elastomer) of a high Tg elastomer as a blend with 30 to 50 phr of a low Tg elastomer; according to another In one example, it contains all 100 phr of one or more SBRs prepared in solution.

[0043] According to another embodiment of the invention, the diene elastomer of the composition according to the invention comprises BR (as a low Tg elastomer) exhibiting a cis-1,4-structure level (mol %) greater than 90% Blends with one or more S-SBR or E-SBR as high Tg elastomer(s).

[0044] The compositions described herein may comprise a single diene elastomer or a mixture of several diene elastomers, one or more diene elastomers may be used in combination with any type of synthetic elastomer other than diene elastomers , and indeed even in combination with polymers other than elastomers, such as thermoplastic polymers.

[0045] Usefu...

Embodiment

[0093] Sample Preparation of Compounds

[0094] Additive Blending: BUTYL 365 was blended with other components according to Table 1 to produce a butyl compound. All components are listed in phr or parts per hundred polymer units. These compounds are mixed in a suitable mixer using at least two consecutive runs known to those skilled in the art. The mixing temperature range is between 110°C and 210°C. The duration of mixing for each individual mixing step is between 1 and 30 minutes, depending on the desired properties.

[0095] Table 2: Butyl Compound Formulations

[0096]

[0097] * 2020 (high molecular weight, hindered amine light stabilizers, available from BASF); BAR 25 (French zinc oxide in naphthenic oil, available from Akrochem Corporation); Pre 3 carbon black available from Cabot

[0098] ** parts by weight / percent of total BUTYL 365

[0099] Silica Tread Compounding

[0100] In Table 3 the tread compound formulations for the Control and the Examples are l...

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Abstract

Elastomeric compositions are disclosed. The elastomer composition comprises, per 100 parts by weight of rubber (phr): from about 30 to about 50 phr of polybutadiene having a cis-1,4 linker content of at least 95%; from about 40 to about 70 phr of benzene Ethylene / butadiene copolymer; natural rubber or polyisoprene from about 0 to about 20 phr; processing oil from about 0 to about 30 phr; hydrocarbon resin from about 10 to about 30 phr; filler from about 50 to about 75 phr; curing antioxidant; silane coupling agent; and about 5 to about 30 phr of C containing about 85 to about 99.5 mol%. 4 -C 7 Isoolefin(s) and about 0.5-about 15 mol% C 4 -C 14 Butyl copolymer rubber of conjugated diene.

Description

[0001] Inventors: Edward J. Blok, Anthony J. Dias, Paul T.Q. Nguyen, Erick E. Wurzinger [0002] Cross References to Related Applications [0003] This application claims priority and benefit to USSN 62 / 655,980, filed April 11, 2018, which is hereby incorporated by reference in its entirety. [0004] field of invention [0005] This invention relates to butyl rubbers useful as tire tread modifiers. [0006] Background of the invention [0007] Tire tread compounds are important compounds in tires that determine wear, traction and rolling resistance. The technical challenge was to achieve excellent traction, low rolling resistance while providing good tread wear. The challenge is the tradeoff between wet traction and rolling resistance / tread wear. Increasing the glass transition temperature (Tg) of the compound will provide better wet traction but at the same time increase rolling resistance and tread wear. There is a need to develop tread compound additives that provide go...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C1/00C08L9/06C08L9/00C08L57/02C08L23/22C08L7/00C08K3/36C08L45/00
CPCB60C1/0016C08L9/06Y02T10/86C08L9/00C08L57/02C08L23/22C08L7/00C08K3/36C08K3/06C08K5/09C08K5/548C08K5/18C08K3/04C08K3/22C08K5/47C08K5/31C08L45/00C08F236/06C08F236/08C08F236/10C08K5/0025C08K5/01C08K5/5419C08L25/08C08L91/00C08L2205/03C08L2207/04
Inventor E·J·布罗克A·J·狄亚斯P·T·Q·阮E·E·武尔青格
Owner EXXONMOBIL CHEM PAT INC