Check patentability & draft patents in minutes with Patsnap Eureka AI!

Rubber composition for tire and pneumatic tire

A rubber composition and a technology for pneumatic tires, which are applied in the field of rubber compositions for tires and pneumatic tires, can solve the problem of reduced reinforcement of the rubber composition, deterioration of block-cutting resistance and block-drop resistance, difficulty in taking into account performance, etc. problems, to achieve the effects of low fuel consumption, improved cutting resistance, and improved overall performance

Pending Publication Date: 2020-08-14
SUMITOMO RUBBER IND LTD
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As a method of improving low fuel consumption, for example, a method of reducing the amount of filler for reinforcement is known, but in this method, due to the decrease in the reinforcement of the rubber composition, etc., there is a loss of block cutting resistance (chip and cutresistance) (block drop resistance) and other deterioration tendency
In this way, general performance such as low fuel consumption and chipping resistance are in a contradictory relationship, and it is difficult to balance the respective performances.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rubber composition for tire and pneumatic tire
  • Rubber composition for tire and pneumatic tire
  • Rubber composition for tire and pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0126] The present invention is specifically described based on examples, but the present invention is not limited to these examples.

[0127] Next, various chemical reagents used in Examples will be described.

[0128] NR: TSR 20

[0129] SBR1-1: Manufacturing Example 1-1

manufacture example 1-2

[0131] SBR2: Modified SBR (10 mass% styrene content, 40 mass% vinyl content, Mw: 60×10 4 )

[0132] BR: BR 150B manufactured by Ube Industries, Ltd. (cis content: 98% by mass)

[0133] Carbon black 1-1: IA 135mg / g

[0134] Carbon black 1-2: IA 160mg / g

[0135] Carbon black 2: SHOBLACK N220 (IA: 118 mg / g) manufactured by Cabot Japan Co., Ltd.

[0136] Silica: Ultrasil VN3 (N) produced by Degussa 2 SA: 175m 2 / g)

[0137] Wax: OZOACE0355 manufactured by Nippon Seika Co., Ltd.

[0138] Antiaging agent: NOCRAC 6C (N-phenyl-N'-(1,3-dimethylbutyl)-p-phenylenediamine) (6PPD) manufactured by Ouchi Shinko Chemical Industry Co., Ltd.

[0139] Stearic acid: Beaded stearic acid "Tsubaki" manufactured by NOF Corporation

[0140] Zinc oxide: Zinc oxide #2 manufactured by Mitsui Metal Mining Co., Ltd.

[0141] Silane coupling agent: Si69 (bis(3-triethoxysilylpropyl)tetrasulfide) manufactured by Degussa

[0142] Oil: TDAE oil produced by Japan Energy Co., Ltd.

[0143] Sulfur: powd...

manufacture example 1-1

[0147] Under a nitrogen atmosphere, add 3-dimethylaminopropyltrimethoxysilane to a 100ml volumetric flask, and then add anhydrous hexane to make a terminal modifier.

[0148] Add n-hexane, styrene, butadiene, and tetramethylethylenediamine to a pressure-resistant container fully substituted with nitrogen, and raise the temperature to 40°C. Next, after adding butyllithium, the temperature was raised to 50° C., followed by stirring. Next, a silicon tetrachloride / hexane solution was added and stirred. Next, the above-mentioned terminal modifier was added and stirred. After adding methanol in which 2,6-tert-butyl-p-cresol was dissolved to the reaction solution, the reaction solution was placed in a stainless steel container containing methanol, and aggregates were collected. The obtained aggregate was dried under reduced pressure for 24 hours to obtain SBR1-1. In the obtained SBR1-1, the styrene content was 27% by mass, the vinyl content was 57% by mass, and the Mw was 40×10 4...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
iodine adsorptionaaaaaaaaaa
iodine adsorptionaaaaaaaaaa
iodine adsorptionaaaaaaaaaa
Login to View More

Abstract

Provided are a rubber composition, for a tire, having significantly improved combined performance of low fuel consumption performance and chip-cut resistance, and a pneumatic tire produced using the rubber composition. The rubber composition for a tire contains an isoprene-based rubber, a butadiene rubber, a styrene-butadiene rubber having a styrene content of 18 to 40% by mass, a carbon black having an iodine adsorption amount not less than 130 mg / g, and silica. In 100% by mass of a rubber component, an amount of the isoprene-based rubber is not less than 40% by mass, an amount of the butadiene rubber is not less than 20% by mass, and an amount of the styrene-butadiene rubber is 1 to 30% by mass. An amount of the silica per 100 parts by mass of the rubber component is 5 to 60 parts by mass.

Description

technical field [0001] The present invention relates to a rubber composition for tires and a pneumatic tire. Background technique [0002] In recent years, along with increased interest in environmental issues, there has been an increasing demand for lower fuel consumption in motor vehicles, and rubber compositions used in tires for motor vehicles are also required to be excellent in fuel consumption. [0003] As a method of improving low fuel consumption, for example, a method of reducing the amount of filler for reinforcement is known, but in this method, due to the decrease in the reinforcement of the rubber composition, etc., there is a loss of block cutting resistance (chip and cutresistance) (block drop resistance) tends to deteriorate. In this way, generally, performances such as low fuel consumption and chipping resistance are in a contradictory relationship, and it is difficult to balance the respective performances. Contents of the invention [0004] [Problem t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/06C08L9/00C08K13/02C08K3/04C08K3/36C08K5/09C08K3/22B60C1/00
CPCC08L7/00B60C1/0016C08L2205/035C08K2003/2296C08L9/06C08L9/00C08K13/02C08K3/04C08K3/36C08K5/09C08K3/22B60C1/00B60C2200/06B60C1/0025Y02T10/86C08L91/00C08L91/06C08K5/18C08K5/548C08K3/06C08K5/31C08K5/47
Inventor 姬田真吾
Owner SUMITOMO RUBBER IND LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com