Unlock instant, AI-driven research and patent intelligence for your innovation.

Rubber composition and tire

A rubber composition, rubber technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problem of rapid disappearance of the effect, and achieve the effect of improving the overall performance

Pending Publication Date: 2021-08-31
SUMITOMO RUBBER IND LTD
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these chemicals also have the disadvantage that their effects quickly disappear over time with degradation or removal

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 and tire
  • Rubber composition and tire
  • Rubber composition and tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0185] The present invention is specifically described with reference to examples, but the present invention is not limited to the examples.

[0186] The microstructure and weight average molecular weight (Mw) of the rubber components used were evaluated as described below.

[0187]

[0188] The amount of structural units of the (co)polymer was measured using an AV400 NMR analyzer and data analysis software TOP SPIN 2.1 (both purchased from Bruker).

[0189]

[0190] The weight average molecular weight (Mw) is measured by gel permeation chromatography (GPC) under the following conditions (1) to (8).

[0191] (1) Device: HLC-8220 purchased from Tosoh Corporation;

[0192] (2) Separation chromatographic column: HM-H (2 in series) purchased from Tosoh Corporation;

[0193] (3) Measuring temperature: 40°C;

[0194] (4) Carrier: tetrahydrofuran;

[0195] (5) Flow rate: 0.6mL / min;

[0196] (6) Injection volume: 5 μL;

[0197] (7) Detector: differential refractometer;

[0...

Synthetic example 1

[0204] : hydrogenated styrene-butadiene rubber (hydrogenated SBR, styrene content: 34 mass%, vinyl-butadiene content: 0 mass%, cis or trans butadiene content: 5 mass%, ethylene content: 61% by mass, Mw: 250,000, hydrogenation degree of butadiene unit: 93% by mass), synthesized in Synthesis Example 1 below;

[0205] : Modified styrene-hydrogenated butadiene-styrene block copolymer terminated with alkoxysilyl group (modified SEBS, styrene content: 25% by mass, butadiene unit Degree of hydrogenation: 90% by mass, vinyl-butadiene unit content (based on hydrogenated butadiene units as 100% by mass): 0% by mass, cis-butadiene unit content (based on hydrogenated butadiene units Alkene unit (100% by mass): 5% by mass, Mw: 150,000, iodine value: 10), the modified copolymer ( The chain-end modified SBS block copolymer) is obtained by catalytic hydrogenation of Ti, and the difference is to change the amount of styrene introduced and other conditions;

[0206] : Block copolymer (tetrame...

Embodiment 4

[0262] Comparison between Example 4 and Comparative Examples 2 to 4 shows that processability, ozone resistance, The overall performance of , handling stability, abrasion resistance and fracture resistance is synergistically improved.

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
Softening pointaaaaaaaaaa
Login to View More

Abstract

The purpose of the present invention is to provide a rubber composition and a tire in which total performance, including workability, ozone resistance, steering stability, wear resistance, and fracture resistance, is improved. The present invention pertains to a rubber composition that includes: an aromatic vinyl-diene-olefin copolymer A in which the amount of aromatic vinyl is 1-45 mass%, the amount of diene is 0.1-50 mass%, and the amount of olefin is 30-90 mass%; and an aromatic vinyl-diene block copolymer B.

Description

technical field [0001] The present invention relates to rubber compositions and tires. Background technique [0002] Various properties are required for tire rubber compositions. Recently, especially in terms of environmental compatibility, durability-related properties such as abrasion resistance, ozone resistance, and fracture resistance have been emphasized to ensure safe and long-term use. At the same time, properties such as processability (for efficient tire production) and handling stability (for safe handling) are also required. [0003] For example, fracture resistance and handling stability can be improved by adding large amounts of reinforcing materials such as carbon black and silica, but this technology has the disadvantage of significantly reducing processability. To enhance ozone resistance, waxes or antioxidants are often added. However, these chemicals also have the disadvantage that their effects quickly disappear over time as they degrade or are removed...

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
IPC IPC(8): B60C1/00C08K5/098C08K5/14C08K5/372C08L9/06C08L53/02C08K3/04
CPCB60C1/00C08K5/098C08K5/14B60C1/0016C08L23/0838C08L53/025C08K5/372
Inventor 北王彩加横山结香佐藤大辅
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